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García-Caparrós, Pedro, Olga González-Salmerón, Mónica Pérez-Saiz, Raquel Calatrava, María Teresa Lao, Rosa María Chica i Gumersindo De la Cruz. "Types of Shelter and Covering Materials Influencing Growth, Pigment, and Nutrient Concentrations of Baby Rubber Plants (Peperomia obtusifolia)". HortScience 53, nr 10 (październik 2018): 1434–40. http://dx.doi.org/10.21273/hortsci13315-18.
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The cultivation of ornamental plants under different types of shelter and covering materials which reduce light intensity, resulting in morphological and physiological changes, needs to be evaluated before any large-scale use of such types of shelter covers. Baby rubber plants were grown in pots filled with peat under four different shelters and covering materials as follows: MG (multitunnel greenhouse with thermo-reflective aluminised screen), BG (buried solar greenhouse with thermo-reflective aluminised screen), NH (net house covered only with antipest mesh) and NH-AS (net house with antipest mesh and thermo-reflective aluminised screen). At the end of the experiment, the growth parameters and color of leaves, as well as photosynthetic and nutritional parameters, were assessed for each treatment. Baby rubber plants grown under NH-AS showed the highest values for growth parameters. The absence of shading in a net house may result in photoinhibition, reducing the growth and increasing the values of red (R) and blue (B) in leaves, which may be related to the increase of anthocyanin synthesis. The low level of radiation intercepted in the multitunnel and the buried greenhouse increased chlorophyll, N and P leaf concentration, while for K concentration, there was no clear trend and Na and Cl leaf concentration were similar under the different types of shelter. We concluded that the production of baby rubber plants under net house with antipest mesh and thermo-reflective aluminised screen is the best option to maximise the market value of baby rubber plants.
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Regan, Richard P., Robert L. Ticknor, Delbert D. Hemphill, Tony H. H. Chen, Paul Murakami i Leslie H. Fuchigami. "Influence of Winter Protection Covers on Survival and Hardiness of Container Grown Ilex crenata Thunb. ‘Green Island’ and Euonymus fortunei (Turcz.) ‘Emerald 'n Gold’". Journal of Environmental Horticulture 8, nr 3 (1.09.1990): 142–46. http://dx.doi.org/10.24266/0738-2898-8.3.142.
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Abstract Five systems for protection of container grown nursery stock were compared for freeze injury to shoots and roots of Ilex crenata Thunb. ‘Green Island’ and Euonymus fortunei (Turcz.) ‘Emerald 'n Gold’. In three treatments, plants were protected starting November 15, 1988 either in a white co-polymer house or with structureless non-woven polypropylene covers (N-Sulate™ or Typar™). In a fourth treatment, structureless clear polyethylene was applied when temperatures were cold enough (−7°C (25°F) to cause injury. The controls were not covered. The white co-polymer house and the temporary covering with clear polyethylene reduced the number of hours below −7°C (25°F) in the canopy or medium and resulted in fewer plant losses compared to the nonwoven covers or the controls. Development of shoot and root hardiness of both species was monitored prior to and after the low temperature period. Roots of plants under long-term protective covers were slightly less hardy than those not covered.
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Kaltsidi, Maria P., Ignacia Bayer, Christina Mitsi i Danilo Aros. "Potential Use of Chilean Native Species in Vertical Greening Systems". Sustainability 15, nr 6 (10.03.2023): 4944. http://dx.doi.org/10.3390/su15064944.
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Vertical greening systems (VGSs), i.e., living walls (LWs) and green façades (GFs), are considered a promising technology to diminish the negative effects of urbanisation. Plant selection for these systems is challenging due to the narrow spectrum of species available, and the required adaptation to specific climate conditions. Considering Chile’s rich plant biodiversity, this study aims to analyse the potential of Chilean native species to be introduced in VGSs. A total of 109 potentially usable species from the north (n = 25), centre (n = 32), south (n = 31) and the Andes Mountains (n = 21) were selected for VGSs, showing a high level of endemism (43.1%). According to the filters applied, 39 and 70 species were selected for GFs and LWs, respectively. To evaluate appreciation of Chilean native plants and their potential use in VGSs, an online questionnaire was responded by 428 individuals. Most participants agreed or strongly agreed with the use of LWs and/or GFs inside their house/apartment (75.5%) and in their garden/balcony (90.0%). Most of the participants agreed or strongly agreed with the use of Chilean native plants inside their house/apartment (75.0%) and in their garden/balcony (84.4%). Further empirical studies are still required to confirm the use of Chilean native species in LWs and GFs.
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Tarek, Muhammad, Md Imdadul Hoque i Rubaiyat Binte Billah. "Screening of Potential Bacterial Isolates as Specific Biofertilizer Agent for Mungbean Plants". Research in Agriculture Livestock and Fisheries 7, nr 2 (1.09.2020): 191–97. http://dx.doi.org/10.3329/ralf.v7i2.48859.
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The Experiment was performed under glass house condition (24°8´ N 90°0´ E) with eight rhizobial strains namely MBR-3, MBI-5, MBI-19, MBM-4, MBM-8, MBP-10, MBB-3 and MBJ-7 obtained from mungbean rhizosphere of different locations in Bangladesh and BINA MB-1 (a registered biofertilzer for mungbean) was used as standard check along with un-inoculated control to test their potentiality under glass house condition for mungbean. Result revealed that the higher plant growth, biochemical parameters, seed yield attributes and seed yield were recorded in three bacterial isolates viz., MBI-5, MBB-3 and biofertilizer, BINA MB-1 with being the highest in MBI-5. Therefore, the isolate MBI-5 may be used as commercial biofertilizer after few more trials in the different mungbean growing areas of Bangladesh
Res. Agric., Livest. Fish.7(2): 191-197, August 2020
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Shukla, Shastri P., i P. B. Khare. "In Vitro Conservation of Some Threatened and Economically Important Ferns Belonging to the Indian Subcontinent". Journal of Botany 2014 (10.07.2014): 1–8. http://dx.doi.org/10.1155/2014/949028.
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This study was undertaken to identify methods of mass multiplication for five ornamental, economically important ferns (Nephrolepis biserrata (Sw.) Schott., N. cordifolia cv. ‘‘duffii’’ (L.) Presl., N. exaltata cv. bostoniensis (L.) Schott., Pteris vittata L., and Cyclosorus dentatus Link.,) and three threatened ferns, namely, Cyathea spinulosa Wall. ex. Hook, Pityrogramma calomelanos (L.) Link., and Microsorum punctatum (L.) Schott., through in vitro techniques. Collections were made from different biodiversity zones of India including Northeast Himalayas, Kumaon Himalayas, and Western Ghat and successfully introduced and grown in a fern-house. Aseptic cultures were raised at the morphogenic level of callus, axillary shoot, multiple shoot, and rooted plants. An optimized medium is described for each fern species. Plantlets were also produced from spore culture of Cyathea spinulosa and successfully hardened under fern house conditions.
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Johnson, C. H., M. W. Page i L. Blaha. "Full scale moving bed biofilm reactor results from refinery and slaughter house treatment facilities". Water Science and Technology 41, nr 4-5 (1.02.2000): 401–7. http://dx.doi.org/10.2166/wst.2000.0472.
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Two Kaldnes moving bed biofilm reactor (MBBR™) full scale treatment plants were commissioned in 1999, following successful pilot tests which generated the design data. The MBBR plants are incorporated into each facility as roughing reactors ahead of existing activated sludge processes. Results from the first three months of operation at the Phillips refinery showed surfa ce area loading rates (SALR) averaging 27 g COD/m2/day or twice those seen in the pilot study while percent removals remained constant at 62%. Performance at the Valley Pride Pack facility showed >90% removal of soluble BOD at SALR of 20 g/m2/day in one reactor while nitrification removal rates up to 0.83 g NH3–N/m2/day have been seen in the second stage of the MBBR treatment system.
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Salam, Abdul Kadir. "The correlation study of several chemical extractants to assess plant copper uptake from tropical soils polluted with heavy metals". IOP Conference Series: Earth and Environmental Science 1314, nr 1 (1.03.2024): 012003. http://dx.doi.org/10.1088/1755-1315/1314/1/012003.
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Abstract Glass-house experiments were conducted to study the correlation between Cu uptake by several plants and soil Cu extracted by several chemical extractants. Heavy-metal contaminated soils from Lampung, the southern part of Sumatra, Indonesia, with different levels of Cu were used. Eight different plants including amaranth (Amaranthus tricolor), caisim (Brassica chinensis var. Parachinensis), corn (Zea mays L.), land spinach (Ipomoea reptans Poir), lettuce (Lactuca sativa), napier grass (Penissetum purpureum), thorny amaranth (Amaranthus spinosus L.) and water spinach (Ipomoea aquatica) were employed. The uptake of Cu for amaranth is well predicted by N HCl, Buffered DTPA pH 7.30, N NH4OAc pH 7.00, and M CaCl2; for corn by N HCl and N NH4OAc pH 7.00; for land spinach by N HNO3, N HCl, Buffered DTPA, N NH4OAc pH 7.00, and M CaCl2; for napier grass by N HCl and Unbuffered DTPA. N HNO3 is good in predicting the uptake of Cu by land spinach, N HCl by amaranth, corn, land spinach, and napier grass; Buffered DTPA by amaranth and land spinach; Unbuffered DTPA by napier grass; N NH4OAc pH 7.00 by amaranth, corn and land spinach, and M CaCl2 by amaranth and land spinach. None of the tested methods is good in predicting the uptake Cu by caisim, lettuce, thorny amaranth, and water spinach
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Halima Musa Rabiu. "Vegetative Growth Responses of Castor (Ricinus communis) and Senna (Senna occidentalis) to Low Dose Zinc (Zn) Spiking of Agricultural Soil in Kano, Northern Nigeria". UMYU Scientifica 1, nr 1 (30.09.2022): 268–73. http://dx.doi.org/10.56919/usci.1122.034.
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The aim of the research is to assess the viability of castor (Ricinus communis) and senna (Senna occidentalis) plants up to 90 days after planting (DAP) in agricultural soil spiked with different concentration of zinc in the screen house. Agricultural soil was collected from Bayero University Kano, at 11° 98ʹ 32.59″N; 8°42ʹ 43.97″E. Soil texture, pH, electrical conductivity (EC), organic carbon (OC), nitrogen (N), phosphorus (P) and exchangeable cations (K + , Ca + , Mg + and Na + ) were determined. Castor and senna were planted in soil spiked with 2 mg/kg, 4mg/kg and 8 mg/kg of zinc sulphate (ZnSO4) each. Control plants containing only agricultural soil without spiking with zinc were added and the set up replicated 4 times. Plant height, number of leaves and root length were assessed at 45 and 90 days after planting (DAP). The soil was sandy loam, slightly acidic, C, N, P and K+ had mean values of 0.41%, 0.33 mg/kg, 14.33 mg/kg and 0.39 cmol/kg respectively. There were significantly higher (p<0.05) mean values for height (16.85cm) and root length (17.35 cm) of control castor plants than those treated with zinc at 45 DAP. At the termination of the experiment (90 DAP), senna plants in control had significantly higher mean values for height (29.5 cm) than all other treatments. All concentrations of zinc used in this work did not seem to have much negative effects on the vegetative growth of both test plants.
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Rismayani, I. M. Trisawa, A. Jufri, M. Syakir i Wiratno. "Effect of botanical insecticide application on the population of brown planthopper and its natural enemies and the growth and production of rice plants". IOP Conference Series: Earth and Environmental Science 1208, nr 1 (1.07.2023): 012009. http://dx.doi.org/10.1088/1755-1315/1208/1/012009.
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Abstract Brown planthopper (Nilaparvata lugens Stall) is one of the most dangerous rice pests in Southeast Asia, therefor the population in the plantation must be controlled. This study aimed to determine the effectiveness of the botanical insecticide formulations in controlling brown planthopper attacks, the presence of natural enemies and their impact on the growth and production of rice plants. The study was conducted in the laboratory and the field. Screen house research was conducted in Indonesian Spices and Medicinal Crops Research Institute by testing the botanical insecticide formulation at five concentrations, namely; 0, 0.5, 2.5, 4.5, and 6.5 cc/l, and repeated five times. The results showed that at a concentration of 4.5cc/l, the insecticide was able to cause 97% mortality of the insects. This concentration was then used for spray application in the screen house which showed a more significant number of productive tillers, grain per bunch, and weight of 1000 grains than the control treatment, and about 25% higher in plant production. The Results of the field study conducted in Indramayu District showed that the botanical insecticide was able to suppress the population of N. lugens, but it was safe for natural enemies. The production of plants sprayed with botanical insecticides was 16.39% higher than the control treatment. This indicated that the botanical insecticide tested can be able to suppress the population of N. lugens, but was also safe against natural enemies and increase rice production.
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Prasetyo, Teguh Budi, Amsar Maulana, Moli Monikasari, Alfino Andestopano, Irwan Darfis, Ikram Pratama, Ridho Ryswaldi i Herviyanti Herviyanti. "Chemical Characteristics of Chicken Litter Waste in Closed-House System". International Journal on Advanced Science, Engineering and Information Technology 14, nr 3 (18.06.2024): 1026–34. http://dx.doi.org/10.18517/ijaseit.14.3.19700.
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Waste from the broiler and layer farming industry with a closed-house system continues to increase without optimizing waste utilization and harms the environment. Potential chicken litter waste from the chicken farming industry in West Sumatra is 5 tons per harvest (40 days) from a chicken livestock capacity of 100,000 chickens. This research aims to assess the potential and utilization and study the biochemistry of chicken manure waste in closed-house systems as biosorbents and fertilizers through amelioration technology. Closed-house chicken coop bedding waste (CHCCW) in the form of sawdust has functional groups such as carboxyl that can absorb cations because it can increase the negative charge in the soil so that it can be utilized by plants. In addition, the CHCCW can also absorb cations (pollutants). Chemical characteristics from the analysis results prove the ability of the CHCCW. Chicken litter waste has chemical characteristics that have the potential as a biosorbent and are valid as fertilizer, which has a proximate composition (moisture 4.26%; volatile matter 74.20%; ash 6.78% and fixed carbon 14.76%); pH (pH H2O 8.37 and pH PZC 7.37); electrical conductivity (EC) >2 dS m-1 and cation exchange capacity (CEC) 182.67 Cmol(+)kg-1. The nutrient composition of chicken manure waste in closed-house systems has macro nutrients (6.88% C; 0.06% N; 5.89% P; 34.89% K; 36.28% Ca; 5.76% S) and micronutrients (2.49% Fe; 1.39% Mn; 1.22% Zn; 1.01% Cu; and 5.15% Cl). Chicken manure waste in closed-house systems also has functional groups such as O-H, N-H, C-H, C-OH, C=C, C=O, C-O-C, Si-O, and O-CH3, which play an active role in the absorption of pollutants and nutrients in the soil.
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Al-Mana, Fahed A., i Tarik M. El-Kiey. "PRODUCTION OF SOME FLOWERS IN HYDROPONICS AND SOILLESS MEDIA". HortScience 25, nr 9 (wrzesień 1990): 1171c—1171. http://dx.doi.org/10.21273/hortsci.25.9.1171c.
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Production of five commercial cut flowers in different culture media, namelyI nutrient film technique (NFT), soilless media (perlite and an equal mix of perlite and peatmoss), and soil mix (2 sand: 1 loam by volume), was investigated in controlled fiberglass-house. Two rose varieties (Rosa hybrida var. Baccara and Madina); carnation (Dianthus caryophyllus var. William Sim); Chrysanthemum morifolium var. Delta, and Dahlia hybrida var. variabilis were used. Plants were watered as they needed by the same nutrient solution used for NFT.Generally, growth and yield of Baccara and Madina roses, Chrysanthemum and Dhalia plants were superior in NFT than in the other media. On the contrary, the growth and yield of carnation plants were significantly greater in conventional soil or perlite and peatmoss mix than in NFT or perlite.Flower crops grown in NFT generally reached harvest stage 5-10 days earlier than those grown in the other media except carnation plants. There were variations in the accumulation of N, P, K mg, ca, and Fe in plant leaves among the various culture media.
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Catanzaro, C., S. Bhatti, S. Muhammad i S. Abdullah. "(67) Survey at Poinsettia Open House Reveals Preferred Cultivars". HortScience 40, nr 4 (lipiec 2005): 1013B—1013. http://dx.doi.org/10.21273/hortsci.40.4.1013b.
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A high quality finished plant from each of 22 cultivars was displayed at a poinsettia [Euphorbia pulcherrima Willd. ex Klotzsch] open house at Tennessee State University in Dec. 2004. The cultivars represented the range of flower colors, flower traits, and plant vigor available through the major suppliers Dummen USA, Ecke, Fischer, and Oglevee. Attendees of the open house completed a written survey (n = 101) in which they were asked to rate their cultivar preferences. Cultivars (identified only by an alphabetic letter) were rated by respondents on a Likert-type scale (1 = strongly dislike to 5 = strongly like). Highly rated cultivars (mean ≥4) included `Freedom Red', `Premium Red', `Nutcracker White', `Early Orion', `Cortez Electric Fire', and the new cultivars `Visions of Grandeur' and `Kris Krinkle'. Cultivars were also rated on the price range potential consumers were willing to pay. Respondents were willing to pay the most to purchase `Visions of Grandeur', which is a vigorous cultivar with large, pillowy, peach-colored bracts. Overall, traditional red cultivars and large, non-red cultivars were preferred. Most of the respondents indicated that they purchased red plants, and color was the most important selection criterion. Results suggest that although most consumers prefer traditional red cultivars, women prefer some alternative inflorescence colors and unique bract shapes more than men.
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Salam, A. K., M. Milanti, G. Silva, F. Rachman, I. M. T. D. Santa, D. O. Rizki, H. Novpriansyah i S. Sarno. "The use of N HNO3 to determine copper and zinc levels in heavy-metal polluted tropical soils". IOP Conference Series: Earth and Environmental Science 905, nr 1 (1.11.2021): 012001. http://dx.doi.org/10.1088/1755-1315/905/1/012001.
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Abstract This study compared N HNO3 to other methods to determine plant available heavy metals in heavy-metal polluted soils. Soil samples were obtained from an experimental field treated with industrial waste after 22 years of the amendment and employed to conduct the comparative and correlation study. Soil samples were analyzed for Cu using various methods, planted in a glass house with several plants, and analyzed for soil and plant Cu and Zn. The relative strength of the chemical extractants followed the order of N HNO3 ≈ N HCl > Buffered DTPA ≈ Unbuffered DTPA > M CaCl2 ≈ N NH4OAc pH 7. A high correlation was observed for soil extracted Cu by M CaCl2 or N NH4OAc pH 7 or N HCl vs. Buffered DTPA and N HNO3 or N NH4OAc pH 7 vs. N HCl. High correlations of plant and soil Cu extracted by N HNO3 were shown by caisim, water spinach, land spinach, and corn, while plant and soil Zn were shown by caisim, water spinach, land spinach, and lettuce.
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Mora, Floribeth. "Selección de cepas nativas de Rhizobium leguminosarum bv phaseoli eficientes en fijación biológica de nitrógeno en suelos de Costa Rica." Agronomía Mesoamericana 6 (2.06.2016): 68. http://dx.doi.org/10.15517/am.v6i0.24808.
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One hundred and thirty one strains of R. leguminosarum bv phaseoli were isolated from different bean producing zones in Costa Rica. The response of its inoculation to the Huasteco Negro (Phaseolus vulgaris L.) bean variety was evaluated under green house conditions. Pots and heat treated soil were used. The seeds inoculation was conducted using a bacterial suspension of 10° ucf/ml, approximately. Besides, anabsolute control (without inoculation, without nitrogen) and a control with nitrogen (+ 140 kg N/ha) were included. The dry weight of the nodules, dry weight of the aerial part and the ureids concentration of the foliar area at the R6 stage ofdevelopment were the measured variables. The plants inoculated with the CR-455, CR-487 and CR-BSA strains showed the largest nodules’ dry weight values. The absolute control showed the lowest dry weight of nodules. Significant differences (P<0.05) were observed among so me treatments and the controls. The plants showing the highest foliar dry weight were those inoculated with the CR-482, CR-492, CR- 422 and CR-454 strains. Significant differences (P<0.05) were registered for the ureids concentrations among some treatments and the controls. The plants inoculated with the CR-475, CR- 492 and CR-422, CR-487 and CR-477 strains had the highest ureids concentrations and also showed the largest atmospheric nitrogen fixing capacity under green house conditions. A variation of the atmospheric nitrogen fixing capacity or effectiveness among some Rhizobium strains was observed, when comparing the results with the absolute and nitrogenous controls, which agrees with the bibliography.
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Chaudhary, U. C., Alka Singh, T. R. Ahlawat i Sumathi Tatte. "Effect of various levels of nitrogen on quantitative and qualitative parameters of Rose var. “Top Secret” under poly house condition". Journal of Applied and Natural Science 10, nr 1 (1.03.2018): 417–20. http://dx.doi.org/10.31018/jans.v10i1.1640.
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Study was conducted to find out the effect of various levels (100, 150, 200, 250,300 mg/plant/week) of nitrogen on growth parameters in terms of qualitative and quantitative traits of rose var. Top Secret. Plant growth in general increased with increase in nitrogen levels. Among various levels of nitrogen application, 300 mg nitrogen per plant per week significantly increased all vegetative growth parameters and showed maximum plant height (117.45 cm), leaf area (98.91 cm2 ) and a number of leaves (62.50). Further, flowering parameters like stalk length (83.53cm), bud diameter (2.45cm), bud length (2.55 cm), number of flowers per plant (7.30) as well as per square meter (53.05) were also significantly maximum in plants given nitrogen @ 300 mg per plant per week. Leaf N (2.94 %), P (0.19%), K (1.87%) and chlorophyll content in leaves (4.41mg/g) was also higher with 300 mg N per plant per week. Vase life (10 days) and anthocyanin content in petal tissue (2.09 mg/g) were found the maximum in plants given nitrogen @ 250 mg per plant per week, which was at par with the treatment of nitrogen @ 300 mg per plant per week. Nitrogen should be applied at the rate of 300 mg/plant/week under protected cultivation as the optimum dose for good plant growth and qualitative flower production in rose var. Top Secret under protected cultivation.
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Ohwo, Odafivwotu, i R. Alexander Bekeowei. "Phytoremediation of Physico-chemical Parameters in Wastewater Effluents from Car Wash Bays in Yenagoa Metropolis, Nigeria". European Journal of Environment and Earth Sciences 2, nr 6 (7.12.2021): 20–26. http://dx.doi.org/10.24018/ejgeo.2021.2.6.212.
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Surface water pollution through the discharge of untreated wastewater is on the increase globally. Efforts made using conventional techniques had not yielded the needed results. This study was conducted to determine the effectiveness of some native aquatic plants for the removal of some physico–chemical parameters from car wash wastewater effluents in Yenagoa metropolis. The plants used for this study were lemna minor, nymphaea nouchalli, pistia-stratiotes, eichhornia crassipes and ceratophyllum demersum; while the physico-chemical parameters investigated in this study include pH, DO, COD, BOD5, NO3, PO4 and turbidity. The wastewater samples collected from car wash bays were analysed to determine the level of the physico-chemical parameters concentrations using standard methods. The experiment was conducted in a green house for 42 days retention period. The results indicated that the cultured plants reduced the physico-chemical parameters to a minimum level, except DO, which increased in concentration. Therefore, they are considered good bioremediators of the parameters under review and the bioremediation potentials of the plants are in the order of P. stratiotes > L. minor > E. crassipes > N. nouchalli> C. demersum. It is therefore recommended that these plants should be used to treat wastewater effluents based on the investigated physico-chemical parameters.
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Lubis, Wira Okriadi. "THE EFFECT OF FERTILIZER UREA AND KCL ON ULTISOL AND INCEPTISOL TOWARD SOIL CHEMICAL PROPERTIES ON CORN ( ZEA MAYS L. ) GROWTH". Agrotech Journal 1, nr 1 (9.12.2016): 50–55. http://dx.doi.org/10.31327/atj.v1i1.209.
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The research was conducted at green house of Agriculture Faculty, North Sumatera University. The research was done to study on the Urea and KCl fertilizer of chemical effect characteristic and growth of corn plant at Ultisols and Inceptisols. The research designed by randomized block factorial with two factors and four dosage replications. The first factors were kind of soils (Ultisols and Inceptisols). The second factor was Urea and KCl fertilizer, each others at 0 ppm, 100 ppm, 200 ppm, 300 ppm N and 0 ppm, 100 ppm, 200 ppm, 300 ppm K2O. The result showed that application of Urea and KCl fertilizers increased height and dry weight of corn plants, soil acidity, nitrogen content and exchangeable Kalium at Inceptisols. Dosage excess of Urea was more at 100 ppm N responsible on height and weight of corn plant.
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Vina NUR HIDAYAH i Fella Sufah Baedowi. "PERAN PLH (PENDIDIKAN LINGKUNGAN HIDUP) SMA N 3 KLATEN ERA NEW NORMAL : BERTANAM DARI SEKOLAH MENUJU RUMAH". Jurnal Ilmiah Pendidikan Lingkungan dan Pembangunan 21, nr 02 (27.09.2020): 1–12. http://dx.doi.org/10.21009/plpb.212.01.
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Adiwiyata school SMAN 3 Klaten applies Environmental Education to its students which is for better habits towards the environment in a sustainable manner. This cannot be realized in schools because of the emergence COVID-19. This study aims to determine the effect of Environmental Education on SMAN 3 Klaten students in New Normal era. The method used in this study uses a qualitative method with sampling techniques of data collection that is a random sample via Google Form on the students SMAN 3 Klaten. The result of this research is that SMAN 3 Klaten has implemented Environmental Education in New Normal era by learning from home, for example cultivating ornamental fish, cultivating medicinal plants and others. Environmental Education Students SMAN 3 Klaten while learning from the new normal era get innovations in the implementation of PLH not only in schools, students can plant at their house in New Normal era.
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Chasanah, Roudhotul, Anis Sholihah i Agus Sugianto. "PENGARUH PEMBERIAN KOMPOS LIMBAH PERTANIAN TERHADAP PERTUMBUHAN DAN SERAPAN NITROGEN TANAMAN JAGUNG (Zea mays L.)". Folium : Jurnal Ilmu Pertanian 4, nr 1 (26.02.2020): 83. http://dx.doi.org/10.33474/folium.v4i1.6426.
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Corn is one of the most cultivated cereals that plays an important role in meeting food needs so that the production of corn plants is increasing every year. To increase the production of corn, farmers usually use inorganic fertilizer, but in the long run, the use of inorganic fertilizer is not effective, especially in soil fertility. This study aims to determine the effect of different compost and dosages on growth and N uptake of corn plants and to obtain the optimum dosage of each compost to increase N uptake of corn plants. This research was placed in a plastic house in Losari village, Singosari, Malang with a factorial RAK experimental design with Control, where there were two factors, each factor there were four levels, namely the first factor: P1 = straw compost, P2 = soybean compost, P3 = bean compost soil, and P4 = sugarcane compost, whereas the second factor is D1 = 5 tons / ha, D2 = 10 tons / ha, D3 = 15 tons/ha, and D1 = 20 tons / ha. There are 16 combinations plus control = 17 treatments, 17x 3 replications x 3 samples = 153 experimental units. Data analysis used 5% Anova if it was tested further using a 5% BNJ and to determine the optimum dose regression analysis was performed. The results showed that separately the P3 treatment gave the best results on parameters of plant height, stem diameter, number of leaves, and leaf area. P3 treatment gives the best optimum dosage results on N-total uptake with a determination value of 94.46%; the optimum dose obtained is 11.44 tons/ha. Keywords : Corn, compost, dosage, rice straw, soybean, bean, and sugarecane
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Hariono, Maywan, Rollando Rollando, Jasson Karamoy, Pandu Hariyono, M. Atmono, Maria Djohan, Wiwy Wiwy i in. "Bioguided Fractionation of Local Plants against Matrix Metalloproteinase9 and Its Cytotoxicity against Breast Cancer Cell Models: In Silico and In Vitro Study". Molecules 25, nr 20 (14.10.2020): 4691. http://dx.doi.org/10.3390/molecules25204691.
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Matrix metalloproteinase9 (MMP9) is known to be highly expressed during metastatic cancer where most known potential inhibitors failed in the clinical trials. This study aims to select local plants in our state, as anti-breast cancer agent with hemopexin-like domain of MMP9 (PEX9) as the selective protein target. In silico screening for PEX9 inhibitors was performed from our in house-natural compound database to identify the plants. The selected plants were extracted using methanol and then a step-by-step in vitro screening against MMP9 was performed from its crude extract, partitions until fractions using FRET-based assay. The partitions were obtained by performing liquid–liquid extraction on the methanol extract using n-hexane, ethylacetate, n-butanol, and water representing nonpolar to polar solvents. The fractions were made from the selected partition, which demonstrated the best inhibition percentage toward MMP9, using column chromatography. Of the 200 compounds screened, 20 compounds that scored the binding affinity −11.2 to −8.1 kcal/mol toward PEX9 were selected as top hits. The binding of these hits were thoroughly investigated and linked to the plants which they were reported to be isolated from. Six of the eight crude extracts demonstrated inhibition toward MMP9 with the IC50 24 to 823 µg/mL. The partitions (1 mg/mL) of Ageratum conyzoides aerial parts and Ixora coccinea leaves showed inhibition 94% and 96%, whereas their fractions showed IC50 43 and 116 µg/mL, respectively toward MMP9. Using MTT assay, the crude extract of Ageratum exhibited IC50 22 and 229 µg/mL against 4T1 and T47D cell proliferations, respectively with a high safety index concluding its potential anti-breast cancer from herbal.
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Moura, Luciano Fernandes, Pedro Felipe Sousa Teixeira, Franklin Aragão Gondim, Francisco Holanda Nunes Junior, Rifandreo Monteiro Barbosa, Julyanne Fonteles Arruda, Daniel Albiero i Auzuir Ripardo Alexandria. "Viability of Biofertilizer Produced by an Indian Biodigester Prototype Applied to Sunflower Plants". Journal of Agricultural Science 9, nr 10 (13.09.2017): 253. http://dx.doi.org/10.5539/jas.v9n10p253.
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Biodigesters have been used to convert biomass into biogas and biofertilizers. This energy use has been important for the reduction of solid waste pollution in the environment. This work aims to analyse the viability of the use of pig biofertilizer produced by an Indian biodigester prototype, monitored by a data acquisition system. The biodigester used was an Indian prototype built on a low cost material that is easy to acquire (polyvinyl chloride-PVC). After the biofertilizer production, we tested its efficiency and viability under conditions of vegetation house in the cultivation of sunflower plants. The experimental design was completely randomized in a factorial arrangement with 4 concentrations of biofertilizer (0, 40, 80 and 120 kg N ha-1) × 4 harvest periods (14, 21, 25 and 29 days after sowing). We evaluated biometric and vigor parameters by measurements of stem diameter, height of the aerial part, number of leaves and production of fresh and dry matter of roots, aerial and total parts, as well as the relative chlorophyll content. We performed the experiment with five repetitions using two plants each and we submitted the data to analysis of variance (ANOVA) and polynomial regression using the statistical software Sisvar 5.4. The functional Indian biodigester prototype produced a biofertilizer of excellent quality and viability as a biofertilizer for the initial growth of sunflower plants. The biofertilizer served as a nutritional source in the sunflower crop, since it provided increases in all the growth parameters analyzed in relation to the control group (plants in the absence of biofertilizer), especially in the concentration of 120 kg N ha-1.
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Vidyarthi, Shalini, Sher Samant i Pankaj Sharma. "Diversity, Distribution and Indigenous uses of Medicinal Plants of Nirmand Block in Seraj Valley, Kullu District of Himachal Pradesh". Journal of Non-Timber Forest Products 21, nr 3 (1.09.2014): 145–52. http://dx.doi.org/10.54207/bsmps2000-2014-k7x9h3.
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The Indian Himalayan Region is one of the richest reservoirs of biological diversity in the world and is considered as a store house of the valuable medicinal plants. In the remote areas of Indian Himalaya, the inhabitants are largely dependent on plants for curing various diseases/ailments. But, due to urbanization and modernization, the indigenous knowledge and traditional practices of medicinal plants are vanishing fast. The Kullu district of Himachal Pradesh is one of the twelve districts, and is a veritable emporium of herbal plants and consists of five blocks (Kullu, Anni, Banjar, Naggar and Nirmand). Nirmand Block (31o25’28"N and 77o34’36"E) covers an area of 77.45 km2. The medicinal plants wealth of Nirmand valley has not been explored so far. Therefore, an attempt has been made to; (i) assess the medicinal plants diversity; (ii) document indigenous uses and practices; (iii) analyze for nativity and endemism; and (iv) suggest strategy for the conservation and management of the species. The present study recorded first hand information on 41 species of medicinal plants belonging to 39 genera and 29 families from the Nirmand Block. The recorded species represent trees (06 spp.), shrubs (06 spp.) and herbs (29 spp.). Different parts of these species, such as whole plants, roots, leaves, flowers, fruits, seeds, stems, barks, etc. were used by the inhabitants for curing various diseases. Twenty seven (27) species were natives and 14 species non-natives to the Himalayan region. Due to changing environmental conditions and habitat degradation, the populations of many species are depleting fast. Therefore, studies on habitat ecology, development of conventional and in-vitro propagation protocols and introduction in cultivation and natural habitats are suggested.
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Maniruzzaman, Md, Md Akhter Hossain Chowdhury, KM Mohiuddin i Tanzin Chowdhury. "Nitrogen requirement and critical N content of stevia grown in two contrasting soils of Bangladesh". Research in Agriculture Livestock and Fisheries 3, nr 1 (26.05.2016): 87–97. http://dx.doi.org/10.3329/ralf.v3i1.27862.
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Nitrogen is recognized as one of the most limiting nutrient for crop growth in Bangladesh and can be supplemented with inorganic fertilizers like urea. The experiment was conducted in the net house of the Department of Agricultural Chemistry, Bangladesh Agricultural University during March to July 2012. The objective was to examine the effects of different levels of N on the growth, leaf biomass yield, N content and to estimate minimum N requirement and critical N content of stevia. The treatments included six N rates (0, 100, 150, 200, 250 and 300 kg ha-1). Plant sampling was done at 15, 30, 45 and 60 days after planting (DAP) to measure plant height, number of branches and leaves, fresh and dry weight of leaves, leaf area and N concentration. The results revealed that all the characters were significantly affected by different N rates. The highest values of all parameters except plant height and N concentration were obtained from 250 kg N ha-1 and the lowest values from N control. Nitrogen application at all levels increased leaf dry yield at harvest by 99 to 505% in acid soil and 69 to 438% in non-calcareous soil, respectively over control. The growth of most parameters was rapid at the later stages (30 to 60 DAP). Leaf N content proportionately increased with the increasing rates of N. The highest N concentration was obtained from its highest application (300 kg N ha-1). The minimum amount of N for maximum leaf biomass production in the plants grown in acid and non-calcareous soils was estimated to be ca 273 and 257 kg ha-1, respectively. The critical N concentration to achieve 80% of the maximum production of stevia leaf was also estimated to be ca 1.43 and 1.50% in the leaves of stevia plants grown in acid and non-calcareous soils, respectivelyRes. Agric., Livest. Fish.3(1): 87-97, April 2016
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Bayoumi, Yousry, Emad Abd-Alkarim, Hassan El-Ramady, Farouk El-Aidy, El-Samahy Hamed, Naglaa Taha, Jaime Prohens i Mohamed Rakha. "Grafting Improves Fruit Yield of Cucumber Plants Grown under Combined Heat and Soil Salinity Stresses". Horticulturae 7, nr 3 (23.03.2021): 61. http://dx.doi.org/10.3390/horticulturae7030061.
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Improving the productivity of cucumber (Cucumis sativus L.) plants subjected to combined salinity and heat stresses is a significant challenge, particularly in arid and semi-arid regions. Gianco F1 cucumbers were grafted onto five cucurbit rootstocks and, together with an ungrafted control, were grown in Egypt in a net house with saline soil during the summer season over two years. The vegetative growth, yield, quality, biochemical, and mineral composition traits were measured. Although many differences were observed among treatments, in general, the grafted plants had a performance better than or similar to that of the ungrafted plants, based on the different parameters measured. In particular, the cucumber plants grafted onto the Cucurbita maxima × C. moschata interspecific hybrid rootstocks VSS-61 F1 and Ferro had the highest early and total marketable yields. These two rootstocks consistently conferred higher vigor to the scion, which had lower flower abortion rates and higher chlorophyll contents. The fruit quality and N, P, and K composition in the leaves suffered few relevant changes as compared with the control. However, the leaves of the VSS-61 F1 had higher catalase activity, as well as proline and Se contents, while those of Ferro had higher Si content. This study reveals that the grafting of cucumber plants onto suitable rootstocks may mitigate the adverse effects caused by the combination of saline soil and heat stresses. This represents a significant improvement for cucumber cultivation in saline soil under high-temperature stress conditions in arid regions.
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Ihab I Sadek, Fatma S Moursy i Tarek M Younis. "Performance of lettuce plants under organic mulch and LEDs light colors". GSC Advanced Research and Reviews 7, nr 3 (30.07.2021): 126–41. http://dx.doi.org/10.30574/gscarr.2021.7.3.0137.
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This study was performed out at net house, privet farm, Cairo-Alexandria desert road, 80 Km, to present the positive role of using different types of organic mulch; different LEDS (light-emitting diodes) light colors and their combination on lettuce plants as growth and yield. Three types of organic mulch i.e., (mushroom wastes, compost and palm fibers) compared to bare soil and four LEDs light colors i.e., (white, yellow, green and "red + blue + green") plus natural light. Seedlings of lettuce cv. Iceberg were transplanting at 1st November through 2019 and 2020seasons. The study was conducted in a split plot design with three replications. Results obtained that using different types of organic mulch, different LEDs light colors and their combination had a significant overall tested parameters (plant length, number of leaves/head, fresh and dry weights of leaves, leaves contents from N, P and K and total heads yield/m2). In general, cultivated lettuce plants with using different types organic mulch and different LEDs light colors enhanced all tested parameters compared to bare soil or/and natural light. The most positive role of tested factors was noticed with using compost mulch, LEDs "R + B+ G" colors and their combination as compost mulch plus LEDs "R + B+ G colors", which, had greatest values of all tested parameters more than other treatments.
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Charchar, Nabil, Ali Elafri, Redwane Rais i Halassi Ismahen. "Land Application of Sewage Sludge: Physiological and Biochemical Response of the Rio Grande Tomato". Journal of Bioresource Management 7, nr 2 (1.06.2020): 01–09. http://dx.doi.org/10.35691/jbm.0202.0126.
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Treated wastewater produces sewage sludge as a by-product that may have beneficial implications on agricultural practices. The effects of sludge amendments on growth, morphological and biochemical characteristics of the agro-industrial Tomato cultivar Rio Grande were observed. A pot culture experiment was carried out during 4 months (16 February 2019 to 18 June 2019), at an experimental green house in the locality of Salah Soufi, Guelma, north-eastern Algeria. There were significant differences between soil and sewage sludge samples. Total nitrogen (20.58 mg/kg) was more available in sewage sludge than in soil (N = 2.09 ± 0.3 mg/kg). In contrast, sludge contained less phosphorus and organic matter than soil. The observation of the morphological characteristics of the plants showed significant variations between the treatments. The germination rates for treated soils decreased significantly to reach 50%, compared to the control. Growth patterns (dry and fresh weight of leaves and roots) changed significantly (P <0.05) between the treatments. Chlorophyll contents of plants in treated soils were more than twice as high as those of the control, but started decreasing at 75% amendment rates.
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Capodaglio, Andrea G., Silvia Bolognesi i Daniele Cecconet. "Sustainable, Decentralized Sanitation and Reuse with Hybrid Nature-Based Systems". Water 13, nr 11 (3.06.2021): 1583. http://dx.doi.org/10.3390/w13111583.
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Nature (ecosystem) based processes for wastewater treatment include constructed wetlands (CWs), waste stabilization ponds, vegetated drainage ditches, buffer zones, instream or bankside river techniques, and mixotrophic systems, where light and CO2 are utilized, in addition to organic carbon compounds, by algal cultures. Algae-based systems can simultaneously remove organic matter, N, and P and may offer substantial energetic advantages compared to traditional biological treatment systems, require small spatial footprint, and contribute to biofuels production and CO2 emissions mitigation. Bioelectrochemical systems (BES) such as microbial fuel cells (MFCs) present characteristics compatible with the use in isolated realities for water and wastewater treatment with contextual energy recovery and may be combined with other nature-based process technologies to achieve good treatment and energy efficiencies. Despite that their application in real-scale plants has not been assessed yet, the most probable outcome will be the in situ/on site treatment (or pretreatment) of wastes for small “in house” plants not connected to the sewerage network. This paper focuses on the current practices and perspectives of hybrid nature-based systems, such as constructed wetlands and microalgae integrated phytoremediation plants, and their possible integration with microbial electrochemical technologies to increase recovery possibilities from wastes and positively contribute to a green economy approach.
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Negi, Kuldeep, Vandana Tiwari, Puran Mehta, Rajni Rawat, Saraswati Ojha i Ishwari Bisht. "Botanical Identity of Seasonal Flowering Plants Available and Maintained in the Home Gardens of District Nainital, Uttarakhand". Journal of Non Timber Forest Products 23, nr 2 (1.06.2016): 89–102. http://dx.doi.org/10.54207/bsmps2000-2016-6ttves.
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Uttarakhand is a store house of plant genetic resources of several crop groups including ornamentals and seasonal flowering plant species. A wide range of seasonal flowering plants are being grown in the region because of its various and favourable agro-geo climatic zones. Ornamental plant enhances aesthetic value of our environment. There are 8 developmental blocks and 1082 villages in district Nainital of Uttarakhand. Nainital district, is a part of Kumaun region of Uttarakhand. It lies between 29?0.1' to 29?36' 21'' N latitude and 78?50' 53'' to 80?06' E longitude. More than 7.62 lakh population reside in 4064 km2 of geographical area of district Nainital. The district falls under sub-tropical to temperate zones. During the course of field survey (2013-2015), we came across wide range of seasonal flowering plants mostly belong to exotic origin being grown in the home gardens of natives of the region situated in different agro-ecological niches. The present study highlighted a total of 150 seasonal flowering plants with 120 genera belonging to 50 families. These were arranged alphabetically with botanical names followed by vernacular and trade name, family, origin or native place, nature, season with appropriate remarks of variation in shape, size and colour, method of propagation with economic status.
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Nambela, Junita Br, Krisna Margaretta Malau i Michel Koibur. "Effects of drip irrigation system with variation of water source and volume in pepper (Capsicum annuum L.)". Ilmu Pertanian (Agricultural Science) 6, nr 3 (29.11.2021): 184. http://dx.doi.org/10.22146/ipas.61761.
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Water plays the important roles for plants. Besides maintaining the cell turgidity, it also functions as a nutrients solvent for photosythesis process, which affects plant growth. This study aimed to determine the effects of the source and volume of irrigation water with drip irrigation system on the growth of pepper plants in polybags. This research was conducted at the green house of Polbangtan Manokwari, Anday, West Papua from June to October 2020. This research was arranged in a factorial Completely Randomized Design consisting of two treatment factors, namely irrigation water source (PDAM water and ground water) and volume (150 mL per plant, 200 mL per plant, and 250 mL per plant). The results showed that PDAM water showed a better effect than groundwater, while the volume of irrigation water applied to pepper plants had no significant effect on plant height, number of leaves, and stem diameter. This situation is thought to be due to genetic factors from the pepper cultivars grown. PDAM water has a better effect because of its high pH and higher content of Nitrite as N content. Also, it has lower temperature, lower TDS, and lower iron contents. Meanwhile, irrigation water volume of 250 mL per plant per day has a minimal risk of plant drought compared to other treatments.
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Karam, Nabila S., i Alexander X. Niemiera. "Cyclic Sprinkler Irrigation and Pre-irrigation Substrate Water Content Affect Water and N Leaching from Containers". Journal of Environmental Horticulture 12, nr 4 (1.12.1994): 198–202. http://dx.doi.org/10.24266/0738-2898-12.4.198.
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Abstract A series of sprinkler irrigation experiments were conducted to determine the influences of water application rate (WAR), pre-irrigation substrate water content (PSWC), and cyclic irrigation on water and N leaching from container-grown plants. Prior to experiments, Marigold (Tagetes erecta L. ‘Apollo’), were glass house-grown in pine bark-filled 3.8 liter (1 gal) containers. Prior to treatment, substrate was dried via evapotranspiration (ET) to targeted PSWCs. A simulated overhead irrigation system applied the daily water allotment in a single continuous application or cyclically (multiple applications); in most cases the respective ET volumes were applied to the substrate. Water application efficiency (WAE; water vol retained in substrate + water vol applied to substrate) was determined, and in some experiments, leachates were analyzed for EC, NO3-N and NH4-N. A negative linear relationship existed between WAR and WAE. Leachate NO3-N and NH4-N concentrations were unaffected by WAR, however, total N leached increased with increasing WAR. WAE of cyclic irrigation was 4% higher (absolute basis) than with continuous irrigation; WAE increased as the time interval between cyclic applications increased from 20 to 60 min. Regardless of how water was applied, WAE was inversely related to PSWC and application volume. These experiments showed that the most effective method to increase WAE is to irrigate at relatively low PSWCs; if irrigation occurs at relatively high PSWCs, then relatively low volumes should be applied.
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Sikirou, Rachidatou, Marie Epiphane Dossoumou, Judith Honfoga, Victor Afari-Sefa, Ramasamy Srinivasan, Mathews Paret i Wubetu Bihon. "Screening of Amaranthus sp. Varieties for Resistance to Bacterial Wilt Caused by Ralstonia solanacearum". Horticulturae 7, nr 11 (4.11.2021): 465. http://dx.doi.org/10.3390/horticulturae7110465.
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Bacterial wilt, caused by Ralstonia solanacearum, is an emerging constraint in amaranth production in Benin. Host resistance is the most sustainable disease control measure. Ten amaranth varieties including A2002, Bresil (B) -Sel, Madiira 2, AC-NL, GARE ES13-7, Madiira 1, UG-AMES13-2, AM-NKGN, IP-5-Sel and a local variety from Benin were screened for resistance to bacterial wilt. The study was conducted in a screen house and in the naturally contaminated open field during a consecutive rainy and dry season using a randomized complete block design with four and three replications, respectively. In the screen house, plants were inoculated by drenching a 40 mL of bacterial suspension containing 108 CFU/mL of R. solanacearum strain NCBI 5 GenBank N° MH397250 at the collar region. The bacterial wilt incidence (BWI) and the area under the disease progress curve (AUDPC) suggested differential reactions of amaranth varieties to the pathogen. BWI and AUDPC were low for UG-AMES13-2, moderate for Madiira 2, AM-NKGN and the local variety and very high for A2002, Bresil (B) -Sel, AC-NL, GARE ES13-7, Madiira 1 and IP-5-Sel. The World Vegetable Center’s UG-AMES13-2 can be considered as first choice, which is resistant to R. solanacearum, and should be scaled up for seed production towards supporting farmers.
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Sohrab, S. S., B. Mandal, R. P. Pant i A. Varma. "First Report of Association of Tomato leaf curl virus-New Delhi with Yellow Mosaic Disease of Luffa cylindrica in India". Plant Disease 87, nr 9 (wrzesień 2003): 1148. http://dx.doi.org/10.1094/pdis.2003.87.9.1148a.
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Sponge gourd (Luffa cylindrica), an important cucurbitaceous vegetable in India, is affected by a disease (2) causing yellow spots on newly emerged leaves, mosaic, mild leaf curling and distortion, small leaves, and misshapen fruits. Nearly 100% of sponge gourd plants were symptomatic in Delhi. Geminivirus-like particles were observed with electron microscopy of uranyl acetate-stained leaf-dip preparations of the diseased plants collected from experimental fields at the Indian Agricultural Research Institute in New Delhi during May and June of 2002. The virus was transmitted by the whitefly (Bemisia tabaci) to sponge and ridge gourd (L. acutangula) after an acquisition and inoculation access period of 24 h each. Whitefly-inoculated plants produced typical yellow mosaic symptoms and contained geminate particles. Nucleic acid extracted from the field-infected and experimentally infected plants hybridized with 32P-labeled probe to DNA-A of Indian cassava mosaic virus, suggesting association of a begomovirus. The viral DNA, isolated by the alkali denaturation method (1) from the experimentally infected sponge gourd plants, was cloned in pBS SK+ at the EcoRI site. A clone with an insert of 2,658 bp was sequenced (GenBank Accession Nos. AJ557219, AJ555488, and AY309957) which shared 89.6 to 95.1% identity with the DNA-A of different strains of Tomato leaf curl virus-New Delhi (ToLCV-NDe). The highest sequence identity (95.1%) was with the severe strain of ToLCV-NDe (GenBank Accession No. U15015). The data suggest that the begomovirus associated with the yellow mosaic disease of L. cylindrica in India is a putative strain of ToLCV-NDe. Reference: (1) K. M. Srivastava et al. J. Virol. Methods 51:297, 1995. (2) A. Varma and B. K. Giri. Virus diseases. Pages 225–245 in: Cucurbits. N. M. Nayar and T. A More, eds. Oxford and IBH Publishing House Private Ltd., New Delhi, India, 1998.
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Alfikri, M. Reza, Hardy Guchi i Asmarlaili Sahar Hanafiah. "Uji Infektifitas dan Efektifitas Rhizobia sp. terhadap Tanaman Kedelai di Rumah Kasa pada Tanah Ultisol dengan pH yang Berbeda". Jurnal Pertanian Tropik 5, nr 1 (1.04.2018): 75–87. http://dx.doi.org/10.32734/jpt.v5i1.3139.
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Rhizobia fixed nitrogen from the air and supplied legume and effected to soil fertility. The research was conducted in May 2017 until November at Soil Biology Laboratory and Screen House of Agriculture Faculty University of Sumatera Utara. This research was carried out with 2 stages: growth test at various pH with isolate tested (TJA 1, TJA 2, TJA 3, BGR 1, BGR 2, BGR 3, BGR 4, BALAI 1, BALAI 2, BALAI 3, LP 1, LP 2, LP 3, LP 4 and LAB) and the infectivity test and the effectivity of Rhizobia. The research used Randomized Block Design with 2 treatment: Lime (Without Lime and Lime 1 x Aldd) and Isolate Rhizobia (TJA 1, TJA 3, BGR 1, BGR 3, BGR 4, BALAI 2, BALAI 3, LP 1, LP 2, LP 4 and LAB). The application of Rhizobia’s isolate BGR 3 showed the infektively with root nodule amount criteria(124,00). The isolate Rhizobia’s BGR 3 effectively increased N plant level and N absorption (3,80 %; 31,08mg/plant). Application of isolate Rhizobia was not able to increase the level of P plants and P plant uptake. The best interaction was shown (Plant height 85.00 cm, stem diameter 3.93 mm, root nodule 127.50, N level of 3.80%, N absorption 30.16 mg / plant) by treatment of BGR 3 and Lime 1 x Aldd.
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Bar-Tal, A., B. Aloni, L. Karni, J. Oserovitz, A. Hazan, M. Itach, S. Gantz i in. "Nitrogen Nutrition of Greenhouse Pepper. I. Effects of Nitrogen Concentration and NO3: NH4 Ratio on Yield, Fruit Shape, and the Incidence of Blossom-end Rot in Relation to Plant Mineral Composition". HortScience 36, nr 7 (grudzień 2001): 1244–51. http://dx.doi.org/10.21273/hortsci.36.7.1244.
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Blossom-end rot (BER) is one of the major physiological disorders of green-house bell pepper (Capsicum annuum L.). The objective of the present work was to study the effects of the solution N concentration and N-NO3: N-NH4 ratio on fruit yield and the incidence of BER and other fruit-quality traits of greenhouse-grown bell pepper in a Mediterranean climate. Three experiments were conducted: Expt. 1 included five total N concentrations (0.25 to 14 mmol·L-1, with a constant N-NO3: N-NH4 ratio of 4); Expt. 2 included five treatments of different NO3: NH4 molar ratios (0.25 to 4, with a constant N concentration of 7 mmol·L-1); and Expt. 3 included three treatments of different NO3: NH4 molar ratios (1.0, 3.0 and 9.0, with a constant N concentration of 7 mmol·L-1). Plants were grown in an aero-hydroponics system in Expts. 1 and 2 and in tuff medium in Expt. 3, in greenhouses in Israel. The optimal values of N concentration for total fruit yield and for high fruit quality (marketable) were 9.3 and 8.3 mmol·L-1, respectively. The total and high-quality fruit yields both increased with increasing N-NO3: N-NH4 ratio in the range studied. The total and high-quality fruit yields both decreased sharply as the NH4 concentration in the solution increased above 2 mmol·L-1. The increase in the NH4 concentration in the solution is the main cause of the suppression of Ca concentration in the leaves and fruits and the increased incidence of BER. The occurrence of flat fruits also increased with increasing NH4 concentration in the solution.
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Kumar, Servesh, i Vishal Soni. "Nephroprotective Activity of Some Indigenous Medicinal Plants in Cisplatin Induced Nephrotoxicity". Asian Pacific Journal of Health Sciences 9, nr 2 (1.04.2022): 267–72. http://dx.doi.org/10.21276/apjhs.2022.9.2.53.
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Aim: The aim of the present investigation is to study the nephroprotective activity of two indigenous medicinal plants. Material and methods: Dried leaves of Alstonia scholaris and Centella asiatica were procured from the medicinal garden and campus of Pharmacy College in the month of September, Bhopal, Madhya Pradesh, India. Around 500 gm dried leaves of Alstonia scholaris and Centella asiatica were coarsely powdered weighed and filled in Soxhlet apparatus for extraction. Wistar albino rats of either sex between 2 and 3 months of age weighing 150-200 gm were used which were procured from the central animal house. The acute oral toxicity studies were carried out according to the guidelines set by the Organization for Economic Co-operation and Development (OECD), revised draft guideline 423. Cisplatin (5mg/kg, i.p) was administered to the rats. The study was conducted for 15 days and the rats were divided into 12 groups (n=6). Rsults: Among all the extracts of Centella asiatica, methanolic extract showed a significant effect (P>0.01) as compared to other extracts. This shows that at these doses of 200 and 400 mg/kg the extract have preventive and protective potential against Cisplatin renal toxicity, suggesting it renal preventive role. Among all the extracts of Alstonia scholaris, dichloromethane extract showed a most highly significant effect (P>0.001) as compared to other extracts. Methanolic extract also showed significant effect (P>0.01) as compared to other extract. Petroleum ether showed almost negligible effect. Conclusion: The results obtained in this study have shown that extracts displayed significant nephroprotective activity in both acute and chronic conditions. Besides from the obvious therapeutic importance, these components would be useful in understanding the mechanism of diseases with higher levels of cellular and molecular level.
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SADAWARTI, MURLIDHAR J., R. K. SAMADHIYA, R. K. SINGH*, S. P. SINGH, TANUJA BUCKSETH, SANJAY RAWAL, VINAY SINGH, SUBHAS KATARE, SATYAJIT ROY i S. K. CHAKRABARTI. "Standardization of agro-techniques for aeroponic potato (Solanum tuberosum) minitubers under generation-0". Indian Journal of Agricultural Sciences 90, nr 3 (22.06.2020): 616–20. http://dx.doi.org/10.56093/ijas.v90i3.101499.
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Since, very less information is available regarding the agro-techniques of hi-tech seed potato minitubers production, therefore an experiment was conducted to evaluate planting geometry and different doses of nitrogen for multiplication of aeroponic minitubers of potato (Solanum tuberosum L.) under net house conditions of north-central plains of India. 30 cm × 15 cm (97.44) plant geometry and 150 kg N/ha (95.81) and 180 kg N/ha (96.98) N dose recorded significantly higher emergence %. Linear increase in plant height was recorded with 120, 150 and 180 kg N/ha dose over 75 kg N/ ha (44.1 cm). Planting geometry 45 cm × 10 cm (34.71) and N dose 150 kg N (35.71) recorded significantly lowest per cent of <3 g minituber by number. Planting geometry 45 cm × 10 cm (1722 thousand/ha) followed by 30 cm × 10 cm (1587 thousand/ha) recorded significantly highest total tuber number over 30 cm × 15 cm (1209 thousand/ ha). Among N dose, 120 kg N (1560 thousand/ha) and 180 kg N/ha (1506 thousand/ha) dose recorded significantly higher total tuber number over 150 kg N/ha dose. Among interaction 45 cm × 10 cm with 120 kg N/ha dose recorded significantly highest total tuber number (1823 thousand/ha) over other combinations. For weight of tubers, 45 cm ×10 cm planting density with 150 kg N/ha reported highest tuber weight (27.62 t/ha). Hence, for the aeroponic seed multiplication of the variety Kufri Lauvkar, planting geometry of 45 cm × 10 cm with plant population of 222222 plants/ha and N, P2O5 and K2O ratio of 150:60:100 kg/ha should be adopted for getting higher tuber number and weight/ha.
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Hernández, German, Vidalina Toscano, Nancy Méndez, Luis Gómez i Miguel Mullings. "Efecto de la concentración de fósforo sobre su asimilación en tres genotipos de frijol común (Phaseolus vulgaris L.)". Agronomía Mesoamericana 7, nr 1 (2.06.2016): 80. http://dx.doi.org/10.15517/am.v7i1.24794.
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The experiment was carried out under green house conditions using 1000 cc pot hidroponic thechniques; it was oxigenated with 400 ml.l-1.minutes-1, where common bean plants arranged in randomized block design. The effect of 0; 0.25; 0.50; 0.75 and 1.00 mm of phosphorus concentration over the biomass developed by leafs, leafstalks, stalks, roots, pods; total biomass; the total plant phosphorus concentration and the phosphorus use efficiency shown the common bean variations (Phaseolus vulgaris L.) such as CC25-9(N), BAT 58 and BAT 304, were studied. There was found significative difference between the amount of biomass formed by leaf, stalk, pods and, the total plant biomass; the total plant phosphorus concentration changed in order of the phosphorus solution concentration used; while the phosphorus use efficien reached the uppermost value at 0.50 mm of phosphorus concentration. There is specific phosphorus incidence over the nutrition of bean genotype. The results showed that the different bean genotypes have different phosphorus requirements.
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Harimurti, Sri, i Rusnani Rusnani. "BAGASSE SEBAGAI SALAH SATU ALTERNATIF CAMPURAN MEDIA TANAM PADA LAHAN PEKARANGAN MENUJU KEMANDIRIAN PANGAN KELUARGA DI KABUPATEN BATANGHARI". Seminar Nasional ADPI Mengabdi Untuk Negeri 1, nr 1 (20.09.2020): 160–64. http://dx.doi.org/10.47841/adpi.v1i1.45.
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Teratai is one of the villages located in Muara Bulian District, Batang Hari Regency and is in themiddle of the city, with diverse residents' livelihoods. Almost all housewives and young womenhave a hobby of farming around the plot of the house. The resulting plants can be used as asupport in meeting the needs of daily life, so as to realize food independence in the family. Onealternative is a mixture of planting media is sugarcane bagasse. Sugarcane bagasse contains52.67% water, 55.89% C-organic, N-total 0.25%, 0.16% P2O5, and 0.38% K2O. The method ofactivity is in the form of counseling with the aim of introducing bagasse / bagasse which can beused as an alternative mixture of planting media in the plots and the contents contained therein.The results of the activity do not yet know that bagasse / bagasse can be an alternative mixtureof media and only know if bagasse contains sugar, and is very good as a compost mixture.
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Lanszki, József, Bertalan Sárdi i Gabriella L. Széles. "Diet composition of a hand-reared stone marten (Martes foina) after its release and independence in a Hungarian village". Natura Somogyiensis, nr 17 (2010): 309–14. http://dx.doi.org/10.24394/natsom.2010.17.309.
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Diet composition and feeding habits of a hand-reared stone marten after release in a village was examined and compared to other martens which had lived earlier in or around the same village (Fonó, Somogy county, Hungary). The food habits were investigated indirectly by analysis of stone marten scats (n = 34 individual samples) using standard wet procedure. Studies in the autumn-winter period showed that the trophic niche of the hand-reared stone marten was relatively narrow. Plants (mainly grapes, apple and blackthorn) formed the dominant component of the diet and small mammals (mainly brown rat, house mouse and wood mice species) were the primary prey type, as in the other local studies. Contrary to other stone martens from Somogy county, predation upon birds was low (%B: 2.4%), and no domestic animal remains were found in the scat samples. The hand-reared marten preyed on mainly small sized and terrestrial prey species, and used garbage as a food source.
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Catanzaro*, Christopher, Haval Kamake i Sarabjit Bhatti. "Poinsettia Consumer Survey Reveals Preferred Cultivars". HortScience 39, nr 4 (lipiec 2004): 765A—765. http://dx.doi.org/10.21273/hortsci.39.4.765a.
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A poinsettia (Euphorbia pulcherrima Willd. ex Klotzsch) open house was held at the TSU main campus farm in Dec. 2003, during which a high quality finished plant of each of 21 cultivars was on display (supplied by Dummen USA and Ecke in August as rooted cuttings). The cultivars varied in inflorescence color and pattern, plant size and plant growth habit. Members of the campus community, the Tennessee Flower Growers Association, extension personnel, and the general public attended. Most attendees completed a written survey (n = 173), in which they rated how strongly they liked or disliked each cultivar. Cultivars were rated on a Likert-type scale (1 = strongly dislike, 7 = strongly like). Highly rated cultivars (mean >6) included `Premium Red', `Infinity Red', `Spotlight Dark Red', `Coco 2000 Red', `Merlot', `Prestige', `Freedom', and `Premium Hot Pink'. Less preferred (mean <4.4) were `Premium Marble', `Mirage', and `Limelight'. Although no cultivars were strongly disliked, the large, traditional red cultivars were preferred. Attendees also provided information on demographics and plant purchases. The typical attendee was a 40- to 59-year-old female with a college education and 2 to 3 people in the household with a total income of $25,000-50,000. Eighty percent bought poinsettias in 2002, with an average of 3.7 plants purchased. Eighty percent of plants purchased were red, and color was the most important selection feature. Results suggest that although most consumers prefer traditional red cultivars, a niche market exists for plants with novel inflorescence colors and unique bract and leaf coloration patterns and shapes.
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Wahyuni, Sri, Paradifan Paradifan, Asep Kurnia i Indratin Indratin. "PENGARUH PEMBERIAN Bacillus aryabhattai TERHADAP PENINGKATAN POPULASI BAKTERI PENAMBAT N SIMBIOTIK DAN PENINGKATAN PRODUKSI TANAMAN BAWANG DAUN". Jurnal Litbang Provinsi Jawa Tengah 16, nr 2 (1.12.2018): 211–18. http://dx.doi.org/10.36762/litbangjateng.v16i2.767.
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Green onion is one of the vegetable commodities that have high economic value and high preferable by the community. Green onion has been exported to the other countries. To increase production it is necessary to use technology to fulfill market demand. The One of technology is adding bacteria in the cultivation of the plant. Bacillus aryabhattai is a bacterium that rapidly colonizes the roots of host plants, promotes plant growth, increases the availability of good nutrition, and has antagonistic effects on plant pathogens. The aim of this research is to know the effect of Bacillus aryabhattai in increasing the population of symbiotic N-stimulating bacteria and to increase crop production. The research was carried out at screen house and laboratory of Agricultural Environment Research Center. The soil was andosol soil from Kaliangkrik Subdistrict of Magelang district. The study was conducted from December 2016 to March 2017. The study design was a randomized block design with 4 treatments and 6 replications. The treatments include control (D1), Bacillus aryabhattai (D2), POC (D3), Trichoderma (D4). The results showed that D2 treatment had a high bacterial population and positively affected plant height, root length, root weight and leaf production. The conclusion of Bacillus aryabhattai giving great influence in multiplying the population of symbiotic N binding bacteria, thus increasing the production of green onion.
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Stansly, P. A., i J. M. Conner. "Control of Tomato Pinworm (Tpw) with Abamectin in Staked Tomato, 1996". Arthropod Management Tests 22, nr 1 (1.01.1997): 189. http://dx.doi.org/10.1093/amt/22.1.189.
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Abstract Tomato seedings “Agriset” from a commercial plant house were transplanted on 7 Mar 96, 18 in. between plants, into raised beds 32 in. wide on 6-ft centers covered with black polyethylene film mulch. A dry bottom mix of 50 lbs N, 160 lbs P and 80 lbs K per acre had been placed at the bottom of the beds and an additional 3.25 lbs per acre N and K were fertigated 3 times a week by drip irrigation. The plants were sprayed weekly with an alternating combination of Maneb 80 WP at 1.5 lb/acre plus Kocide 101 at 2 lb/acre and Bravo 720 at 2 pt/acre for disease control. Dipel was added to the disease control sprays when needed at a rate of 1 lb product/acre. Two wing-type traps from AgriSense containing TPW pheromones were set out on 23 Apr. 15 feet to the east and west of the trial area to monitor moth activity. Mean number of moths captured rose from 1.4 per night on 26 Apr to a peak of 33.6 on 10 May, later declining to 8.0 on 20 May. Plots, 30 ft long and 2 rows, wide were assigned one of 3 treatments in a CRB design with 4 replications. All treatments were sprayed weekly from 1 May to 15 May for three applications at 69 gpa using a high clearance sprayer with 2 booms of 3 Yellow Albuz hollow cone nozzles each for a total of 6 per row and operating pressure of 200 psi. Plants (10 per row or 20 total) were evaluated before treatment on 30 Apr and again on 6 and 13 May by counting live and dead miners. Damage for the entire plant was assessed on a rating scale of 1-6: “1” = no apparent damage; “2” = 0-1% of leaflets damaged; “3” = 2-5% damaged; “4” = 6-10% damaged; “5” = 11-30% damaged; and “6” = >30% damaged. Fruit was harvested 21 May from 20 plants per plot and the marketable fruit graded on a commercial table with weights and numbers recorded. Unmarketable fruit was separated into categories of TPW damage, other insect damage and damage due to disease.
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Farzana, Tania, Qi Guo, Md Sydur Rahman, Terry J. Rose i Bronwyn J. Barkla. "Salinity and nitrogen source affect productivity and nutritional value of edible halophytes". PLOS ONE 18, nr 8 (15.08.2023): e0288547. http://dx.doi.org/10.1371/journal.pone.0288547.
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Saline agriculture may contribute to food production in the face of the declining availability of fresh water and an expanding area of salinized soils worldwide. However, there is currently little known about the biomass and nutrient/antinutrient accumulation response of many edible halophytes to increasing levels of salinity and nitrogen source. To address this, two glass house experiments were carried out. The first to study the shoot biomass, and nutrient accumulation response, measured by ICP-MS analysis, of edible halophyte species, including Mesembryanthemum crystallinum (ice plant), Salsola komarovii (Land seaweed), Enchylaena tomentosa (Ruby Saltbush), Crithmum maritimum (Rock Samphire), Crambe maritima (Sea Kale) and Mertensia maritima (Oyster Plant), under increasing levels of salinity (0 to 800 mM). The second experiment studied the effects of nitrogen source combined with salinity, on levels of oxalate, measured by HPLC, in ice plant and ruby saltbush. Species differences for biomass and sodium (Na), potassium (K), chloride (Cl), nitrogen (N) and phosphorus (P) accumulation were observed across the range of salt treatments (0 to 800mM). Shoot concentrations of the anti-nutrient oxalate decreased significantly in ice plant and ruby saltbush with an increase in the proportion of N provided as NH4+ (up to 100%), while shoot oxalate concentrations in ice plant and ruby saltbush grown in the absence of NaCl were not significantly different to oxalate concentrations in plants treated with 200 mM or 400 mM NaCl. However, the lower shoot oxalate concentrations observed with the increase in NH4+ came with concurrent reductions in shoot biomass. Results suggest that there will need to be a calculated tradeoff between oxalate levels and biomass when growing these plants for commercial purposes.
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Sukmawati, Sukmawati, I. Made Adnyana, Dewa Ngurah Supraptha i Riski Busaifi. "Role of Carrier Media and Types of Indigenous MVA Isolates on Soil Quality in Corn Plants in the Dry Land of West Nusa Tenggara". Jurnal Penelitian Pendidikan IPA 9, nr 3 (31.03.2023): 1512–17. http://dx.doi.org/10.29303/jppipa.v9i3.3537.
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Corn plants have many benefits and are needed by the government as a national food reserve. West Nusa Tenggara (NTB) maize production fluctuated. If managed optimally, dry land agriculture in NTB can provide benefits for increasing agricultural production, especially corn production. The sustainability of dry land farming systems must be continuously improved even with various farming strategies with the main objective of improving soil fertility and overcoming drought stress constraints. One of the efforts to increase the productivity of NTB's dry land is the use of arbuscular vesicular mycorrhizal biofertilizers which are an alternative to improve the quality of soil and plants. Arbuscular vesicular mycorrhiza will colonize and infect roots maximally if using a carrier media that is compatible with MVA inoculant. Appropriate MVA carrier media will provide optimal environmental conditions for host plant growth. The aim of the research was to determine the role of Indigenous MVA and carrier media on soil quality in dryland maize. The research was carried out on corn plants using different carrier media and native MVA types. The study was designed as a factorial study using a completely randomized design (CRD) with 2 factors, namely the type of indigenous MVA isolates with 3 treatment levels and the Carrier Media Type factor with 4 treatment levels. There were 12 treatment combinations that were repeated 3 times so that 36 treatment combinations were obtained which were carried out at the Green House of the Faculty of Agriculture, Nahdhatul Wathan University, Mataram from December 2020 to February 2021. The results showed that the MVA type factor, the MVA isolate had a significantly different effect for all observation parameters, namely soil water content, soil pH, soil total N content and soil available P content, the best isolate was Glomus sp. The carrier media factor gives the result that the type of carrier media has a significant effect on the parameters of observing soil water content, soil total N content and soil pH with the best carrier media being rice husk charcoal biochart
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Aujoulat, Fabien, Rose Ragot, Mylène Toubiana, Chrystelle Bancon-Montigny, Patrick Monfort, Christian Salles, Agnès Masnou i in. "Environmental Antimicrobial Resistance in a Small Urban Mediterranean River: A Focus on Endemic Beta-Lactamases in Clinically Relevant Bacteria". Water 13, nr 15 (22.07.2021): 2010. http://dx.doi.org/10.3390/w13152010.
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Aquatic ecosystems subjected to anthropic pressures are likely hotspots for emergence or dissemination of antimicrobial resistant bacteria. The city of Montpellier is located on a Mediterranean climate watershed that undergoes strong demographic pressures. The aim of the study is to explore antimicrobial resistance, particularly those of clinical concern, in urban rivers flowing in this urban area. The method developed herein to explore antimicrobial resistance is based on cultural and molecular approaches completed by hydrological, hydrogeological, climatic, and physico-chemical data. Hospital vicinity and urbanization density significantly increase cultivable bacterial community, fecal bacteria from human origin, and prevalence of β-lactamases and extended-spectrum β-lactamases encoding-genes without an increase in 16S rDNA gene abundance. A total of 22 multidrug Enterobacterales have been isolated. All Escherichia coli (n = 10) and Klebsiella pneumoniae (n = 6) isolated on a made-house media carried β-lactamases genes, blaCTX-M being the most prevalent (87%), followed by blaTEM (56%) and blaSHV (37%), 56% of these strains carrying two or three of these genes. In urban settings, water quality and infectious risk are generally linked to wastewater treatment plants effluents. This study shows that running waters in urbanized area contribute to the dissemination of antimicrobial resistance, making these environments a reservoir for resistant bacteria with important consideration.
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Ardalan Jalal Majeed. "Cucumber(Cucumis SativusL.)Growth and Nutrient ContentResponse to Applications of Leonarditeand Phosphorus Fertilizer". Agricultural Science 5, nr 1 (3.10.2021): 1–12. http://dx.doi.org/10.55173/agriscience.v5i1.60.
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Leonardite is a common mineral that contains a lot of organic matter. It may have a beneficial influence on plant growth and nutritional content. The objective of the present study was to determine the effect of four different leonardite doses (0, 20, 35, and 50 g kg-1), three different phosphor rates (0, 50, 100, and 150 mg kg-1P), on plant growth, and nutrient uptake of Cucumber (Cucumis sativusL.). plants. The experiment was conducted in a plastic house. Increasing the leonardite dose statistically increased the concentrations of N, P, K, Mg, Cu, and Mn in the cucumber leaves, but Zn content (34.711 a) mg kg-1of the leaves was significantly higher only with the (20 gm) of leonardite. The highest phosphor application (150 mg kg-1) increased leaf N, P, K, Ca, Mg, and Mn concentrations compared with the other three doses and also the leaf Zn levels statistically did not increase as the P applications increased from (control to 150 mg kg-1). Based on the number of fruits per plant, the best interaction among leonardite doses and phosphor rate were a combination of the (35gm×100 mg kg-1) increasing the numbers of cucumber per plant (48.000a).
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Hidayatullah, Mulkan, Siti Hafsah i Gina Erida. "Uji Aktifitas Bioherbisida Ekstrak N-Heksana Alang–Alang (Imperata cylindrica L.) Terhadap Pertumbuhan Gulma Bayam Duri (Amaranthus spinonsus L.)". Jurnal Ilmiah Mahasiswa Pertanian 7, nr 3 (4.07.2022): 1–9. http://dx.doi.org/10.17969/jimfp.v7i3.20599.
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Abstrak. Gulma adalah tumbuhan yang keberadaannya tidak diinginkan, yang menimbulkan kerusakan luas pada tumbuhan dan mempengaruhi kepentingan manusia dalam membudidayakan hasil pertanian. Gulma alang alang (Imperata cylindrica L.) merupakan satu diantara jenis gulma yang termasuk dalam jenis tumbuhan semusim yang merambat pada akar biji dan rimpang. Alang-alang bersaing dengan tanaman lain dengan melepaskan senyawa beracun dari akar dari kelompok fenol yang disebut alelopati. Tujuan dari penelitian ini adalah untuk mengetahui peranan herbisida sintesis berbagai konsentrasi ekstrak n-heksana alang-alang terhadap pertumbuhan gulma bayam duri ( Amaranthus Spinonsus L.).Penelitian ini dilaksanakan di Laboratorium Ilmu Gulma, Program Studi Agroteknologi , Fakultas Pertanian, Laboratorium Pendidikan Kimia, Fakultas Keguruan dan Ilmu Pendidikan, Laboratorium Kimia Fakultas Matematika Ilmu Pengetahuan Alam serta rumah kasa fakultas Pertanian Universitas Kuala, Darussalam Banda Aceh. Pelaksanaan penelitian akan dimulai pada bulan Oktober hingga Desember 2021. Dalam penelitian ini, kami menggunakan Rancangan Acak Lengkap (RAL) pola non-faktorial beserta 6 tingkat percobaan : D0 = kontrol positif (2,4D pada 0,686 kg b.a ha-1),D1 = kontrol negatif (Aquades), D2 = n -Ekstrak n-heksana 5% alang alang, D3 = ekstrak n-heksana alang-alang pada konsentrasi 10%, D4 = ekstrak n-heksana alang-alang pada konsentrasi 15%, D5 = Ekstrak n-heksana alang-alang dari pada konsentrasi 20%. Setiap proses diulang 3 ulangan sehingga teridri 18 satuan percobaan terdiri dari 2 pot, sehingga menghasilkan 36 satuan percobaan. Hasil penelitian memberitahukan bahwa pemberian ekstrak heksana alang-alang berpengaruh sangat penting akan tinggi gulma, jumlah daun dan diameter batang. Ekstrak gulma n-heksana 20% merupakan konsentrasi tertinggi yang dapat menurunkan tinggi gulma, jumlah daun dan diameter batang. Hasil uji fitokimia ekstrak gulma n-Hexane yang mengandung senyawa steroid dan alkaloidBioherbicides activiti extract n-hexane cogon grass (Imperata cylindrica L.) Against The Growth of spiny amaranth (Amarathus spinosus L.)Abstract. Weeds are unwanted plants that cause great damage to plants and affect human interests in cultivating agricultural products. Cogon grass (Imperata cylindrica L.) is a type of weed that is included in the type of perennial plant that propagates on the roots, seeds and rhizomes. Cogon grass competes with other plants by releasing toxic compounds from the roots of the phenol group called allelopathy. The purpose of this study was to determine the effect of synthetic herbicides at various concentrations of n-hexane extract of alang-alang on the growth of spiny spinach (Amaranthus spinonsus L.). This research was carried out at the Weed Science Laboratory, Agrotechnology Study Program, Faculty of Agriculture, Chemical Education Laboratory, Faculty of Teacher and Education, Chemistry Laboratory, Faculty of Mathematics and Natural Sciences and screen house of the Faculty of Agriculture, Kuala University, Darussalam Bandaase. The implementation of the study will start from October to December 2021. In this study, we used a non-squared Completely Randomized Design (CRD) with 6 experimental levels: D0 = positive control (2.4D at 0.686 kg ba ha-1), D1 = negative control (Aquades), D2 = n-extract of n-hexane of reeds 5%, D3 = extract of n-hexane of alang-alang at a concentration of 10%, D4 = extract of n-hexane of alang-alang at a concentration of 15%, D5 = Extract of n-hexane reeds at a concentration of 20%. Each process was repeated 3 replications so that 18 experimental units consisted of 2 pots, resulting in 36 experimental units. The results showed that the administration of reed hexane extract had a very important effect on weed height, number of leaves and stem diameter. Weed extract N-hexane 20% is the highest concentration that can reduce weed height, number of leaves and stem diameter. Phytochemical test results of n-hexane weed extract containing steroid and alkaloid compounds
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van Schothorst, Benjamin, Nicolas Beriot, Esperanza Huerta Lwanga i Violette Geissen. "Sources of Light Density Microplastic Related to Two Agricultural Practices: The Use of Compost and Plastic Mulch". Environments 8, nr 4 (20.04.2021): 36. http://dx.doi.org/10.3390/environments8040036.
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Microplastics (MPs) constitute a known, undesirable contaminant of the ecosystems. Land-based pollution is considered to be an important contributor, but microplastics in the terrestrial environment remains largely unquantified. Some agriculture practices, such as plastic mulch and compost application, are suspected to be major sources of microplastics as plastics are exposed to weathering or are present in organic fertilizers. The overall aim of this research is to bridge the terrestrial plastic contamination information gap, focusing on light density microplastics in two vegetable production systems in Southeast Spain and in the Netherlands. The selected farmer in Spain used plastic mulch for more than 12 years whereas the two farmers in the Netherlands annually applied 10 t ha−1 compost for the past 7 and 20 years. Samples from two different depths were collected: 0–10 cm and 10–30 cm. High quality compost samples originating from municipal organic waste and from garden and greenhouse waste were obtained from two Dutch compost plants. All samples from both Spanish (n = 29) and Dutch (n = 40) soils were contaminated by microplastics, containing 2242 ± 984 MPs kg−1 and 888 ± 500 MPs kg−1, respectively. Compost samples from municipal organic waste (n = 9) were more contaminated than the ones from garden and green house wastes (n = 19), with, respectively, 2800 ± 616 MPs kg−1 and 1253 ± 561 MPs kg−1. These results highlight the need for studies focusing on the effects of microplastics in the environment and the need for monitoring campaigns and the implementation of thresholds to regulate the microplastic contamination.
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Prunić, Bojana, Dubravka Milanov, Maja Velhner, Marko Pajić, Ljiljana Pavlović i Dušan Mišić. "Clonal persistence of Salmonella enterica serovars Montevideo, Tennessee, and Infantis in feed factories". Journal of Infection in Developing Countries 10, nr 06 (30.06.2016): 662–66. http://dx.doi.org/10.3855/jidc.7313.
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Introduction: Novel molecular techniques applied in biotechnology research have provided sound evidence on clonal persistence of distinct serovars of Salmonella in feed factory environments, over long periods of time (months, even years), which can be responsible for repeated in-house contamination of final products. In this study, we examined the possibility of clonal persistence of isolates of three Salmonella serovars that have been repeatedly identified in animal feed samples from three feed factories throughout a two-year period. Methodology: The isolates Salmonella enterica serovars Tennessee (n = 7), Montevideo (n = 8), and Infantis (n = 4) were tested for genetic diversity using pulsed-field gel electrophoresis (PFGE) and multicellular behavior patterns by applying the Congo red agar test. Results: SpeI and XbaI macro-restriction profiles indicated that isolates S. Montevideo and S. Infantis were identical, whereas isolates of S. Tennessee demonstrated greater genetic diversity, although the genetic differences did not exceed 10%. All Salmonella serovars demonstrated the ability to produce predominant matrix compounds essential for biofilm formation, curli fimbriae and cellulose. Conclusions: The identification of identical clones of S. Montevideo and S. Infantis, as well as the minor genetic diversity of S. Tennessee, which have been repeatedly isolated from animal feed in three production plants throughout a two-year period, indirectly suggests the possibility of their persistence in feed factory environments. Their ability to express the key biofilm matrix components further supports this hypothesis.
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Hann, John H. "1630 Memorial of Fray Francisco Alonso de Jesus on Spanish Florida's Missions and Natives". Americas 50, nr 1 (styczeń 1993): 85–105. http://dx.doi.org/10.2307/1007265.
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For the study of Spanish Florida's missions and natives the 1630 memorial by Fray Francisco Alonso de Jesus is a most important document that, strangely, has been little used to date. It ranks in significance with the 1675 letter of Bishop Gabriel Díaz Vara Calderón covering his pastoral visitation of Florida, published in 1936 by the Smithsonian Institution Press in a translation by Lucy N. Wenhold. Fray Alonso's memorial covers some of the same ground as the bishop's letter, but contains additional information dating from almost a half century earlier just before the beginning of the formal evangelization of the province of Apalachee. Fray Alonso covers topics such as the characteristics of the land, its trees and plants and minerals, its Indians and their customs, appearance, clothing, houses, council house, languages, government, inheritance system, tribute payment to native leaders, games, music, and dance, burial practices in heathen times, heathens who were clamoring for baptism in 1630, the number of doctrinas and villages and places belonging to the doctrinas, the number of Christians and catechumens, and the manner of construction of the churches.