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Artículos de revistas sobre el tema "Plants, Effect of nitrogen on"

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Publicado: 4 de junio de 2021

Última modificación: 31 de enero de 2023

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1

Ciecko, Z., S. Kalesa, M. Wyszkowski, and E. Rolka. "The effect of elevated cadmium content in soil on the uptake of nitrogen by plants." Plant, Soil and Environment 50, No. 7 (December 10, 2011): 283–94. http://dx.doi.org/10.17221/4034-pse.

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The aim of this study was to determine the effect of cadmium (10, 20, 30 and 40 mg Cd/kg of soil) contamination in soil with the application of different substances (compost, brown coal, lime and bentonite) on the intake of nitrogen by some plants. The correlations between the nitrogen content in the plants and the cadmium concentration in the soil, as well as the plant yield and the content of micro- and macroelements in the plants were determined. Plant species and cadmium dose determined the effects of soil contamination with cadmium on the content of nitrogen. Large doses of cadmium caused

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2

Neuberg, M., D. Pavlíková, M. Pavlík, and J. Balík. "The effect of different nitrogen nutrition on proline and asparagine content in plant." Plant, Soil and Environment 56, No. 7 (July 14, 2010): 305–11. http://dx.doi.org/10.17221/47/2010-pse.

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Mixture of plants (Festulolium: Trifolium pretense L.) was grown in the pot experiment with different forms of nitrogen nutrition. The fertilizers (ammonium sulphate or calcium nitrate or ammonium nitrate) were applied conventionally or according to the CULTAN method (Controlled Uptake Long Term Ammonium Nutrition). The absolute growth rate (AGR) and contents of free asparagine and proline in the aboveground biomass were determined. Additional nitrogen increased the dry weight of biomass and AGR of the plants treated with sidedress application in comparison with plants treated with the CULTAN

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3

Šrámek, F., and M. Dubský. "Effect of slow release fertilizers on container-grown woody plants." Horticultural Science 34, No. 1 (January 7, 2008): 35–41. http://dx.doi.org/10.17221/1844-hortsci.

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Slow-Release Fertilizers (SRF) Silvamix Forte and Silvagen were tested in two-year experiments with container-grown woody plants (<i>Pyracantha coccinea</i>, <i>Thuja occidentalis</i>). Several fertilizing systems were compared: preplant application of SRF into substrate as the sole nutrient source for a two-year period, preplant application of SRF and soluble fertilizer (PG Mix), and preplant application of SRF and soluble fertilizer together with additional fertilizing by solution of nitrogen fertilizer during both growing periods. A system with controlled-release fer

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4

Galambosi, B., and Y. Holm. "The Effect of Nitrogen Fertilization on the Herb Yield of Dragonhead." Agricultural and Food Science 61, no. 5 (September 1, 1989): 387–94. http://dx.doi.org/10.23986/afsci.72369.

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The influence of a top-dressing of nitrogen fertilizer (calcium nitrate, CaNO3) on the individual plant height and weight, herb yield and nitrate content of dragonhead (Dracocephalum moldavica L.) was studied in 1987 in Puumala, Finland. The nitrogen doses applied ranged from 0 to 270 kg/ha. Nitrogen fertilization increased both the individual plant height and weight, the fresh and dry herb yield and the nitrate content of the plants. However, no optimum nitrogen dose could be found since the maximum was not reached in most of the cases. An exception was the herb yield (d.w.) of transplanted p

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5

Krček, M., P. Slamka, K. Olšovská, M. Brestič, and M. Benčíková. "Reduction of drought stress effect in spring barley (Hordeum vulgare L.) by nitrogen fertilization." Plant, Soil and Environment 54, No. 1 (January 14, 2008): 7–13. http://dx.doi.org/10.17221/2781-pse.

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An effect of nitrogen rates (0.0 g, 1.0 g, 2.0 g N per pot) on NRA (nitrate reductase activity) in leaves of spring barley (cultivar Kompakt) was investigated in a pot experiment. Plants were grown under optimum moisture regime and drought stress was induced during the growth stages of tillering, shooting and earing. Before and after respective stress period plants were grown under optimal water regime. In all the fertilized and unfertilized treatments, NRA was significantly higher under optimal water regime than in drought stress conditions. Nitrogen fertilization alleviated adverse effects o

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6

GIRARDIN, P., A. DELTOUR, and M. TOLLENAAR. "EFFECT OF TEMPORARY N STARVATION IN MAIZE ON LEAF SENESCENCE." Canadian Journal of Plant Science 65, no. 4 (October 1, 1985): 819–29. http://dx.doi.org/10.4141/cjps85-108.

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A prerequisite for an informed strategy regarding nitrogen application in maize (Zea mays L.) is a knowledge of the physiology of plant responses to nitrogen. This study consisted of two experiments on maize plants grown in pails. One experiment was conducted in controlled-environment growth rooms, the other was conducted in the field. N-deficient and control maize plants were evaluated for photosynthetic rate (P), chlorophyll content (CC), nitrogen content, and green leaf area; comparisons between these four parameters were made. During N starvation, rate of senescence (i.e. decrease in green

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7

Giambalvo, Dario, Gaetano Amato, Davide Borgia, Rosolino Ingraffia, Calogero Librici, Antonella Lo Porto, Guglielmo Puccio, Paolo Ruisi, and Alfonso S. Frenda. "Nitrogen Availability Drives Mycorrhizal Effects on Wheat Growth, Nitrogen Uptake and Recovery under Salt Stress." Agronomy 12, no. 11 (November 11, 2022): 2823. http://dx.doi.org/10.3390/agronomy12112823.

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The arbuscular mycorrhizal (AM) symbiosis is generally considered effective in improving salt tolerance in plants; however, the advantages it offers can vary greatly depending on the context in which it occurs; furthermore, the mechanisms underlying these responses are still unclear. A study was conducted to investigate the role of nitrogen (N) availability on the effectiveness of AM symbiosis in durum wheat (Triticum durum Desf.) plants grown under salt stress. Plants were grown in pots in the absence or in presence of salt stress (soil electrical conductivity of 1.50 and 13.00 dS m−1, respec

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8

Abou-Zeid, Hanan Mahmoud. "Nitrogen Biofertilizer Alleviates the Inhibitory Effect of Cadmium on Physiology and Nitrogen Assimilation in Maize Plants." International Journal of Agriculture and Biology 25, no. 01 (January 1, 2021): 98–108. http://dx.doi.org/10.17957/ijab/15.1643.

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The present study investigated the role of inoculation with Nitrobien biofertilizer (N-Bio, Azospirillum and azotobacter spp.) on the response of maize plants to cadmium-toxicity (applied as 2 and 10 mM CdSO4). Cd-stress caused a significant reduction in the fresh and dry biomass of leaves and roots as well as a marked disturbance in the anatomical features of roots and stomatal structure and behavior. Cd-stress significantly depressed the total photosynthetic pigments, photochemical efficiency of PS II, total carbohydrates, and proteins content. Furthermore, increasing Cd level prompted oxida

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9

GIRARDIN, P., M. TOLLENAAR, and J. F. MULDOON. "EFFECT OF TEMPORARY N STARVATION ON LEAF PHOTOSYNTHETIC RATE AND CHLOROPHYLL CONTENT OF MAIZE." Canadian Journal of Plant Science 65, no. 3 (July 1, 1985): 491–500. http://dx.doi.org/10.4141/cjps85-071.

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The photosynthetic rate (P) of maize (Zea mays L.) plants grown under growth room conditions was studied during and after a 10-day period of N starvation. The relationships between P and chlorophyll content, and P and nitrogen content were examined. Nitrogen deprivation, from the 18th to the 28th day, induced a decline of maximum photosynthetic rate, respiration and chlorophyll content; this effect was reversible. Recovery of photosynthetic capability occurred within 10 days of the resumption of nitrogen supply. Only partial recovery of chlorophyll content was recorded in the same time period.

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10

Archbold, Douglas D., and Charles T. MacKown. "Nitrogen Availability and Fruiting Influence Nitrogen Cycling in Strawberry." Journal of the American Society for Horticultural Science 122, no. 1 (January 1997): 134–39. http://dx.doi.org/10.21273/jashs.122.1.134.

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As the primary nutrient applied to and used by strawberry, N allocation and cycling within the plant may play an important role in determining plant vigor and productivity. Our objectives were to determine 1) how N availability and fruit production affect N and fertilizer N (FN) partitioning among and within the vegetative tissues of `Tribute' strawberry (Fragaria ×ananassa Duch.) and 2) if the root N pool is temporary storage N. Plants were fed 15N-depleted NH4NO3 (0.001 atom percent 15N) for the initial 8 weeks, then were grown for 12 weeks with or without NH4NO3 with a natural 15N abundance

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11

Šidlauskas, G., and P. Tarakanovas. "Factors affecting nitrogen concentration in spring oilseed rape (Brassica napus L.)." Plant, Soil and Environment 50, No. 5 (December 10, 2011): 227–34. http://dx.doi.org/10.17221/4026-pse.

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The effect of the duration of the growth season, meaning daily temperature, precipitation rate, growing degree in days, nitrogen rates and application time, stand population density, soil nitrogen content and the interaction among these factors on nitrogen concentration in spring oilseed rape plants of aboveground dry matter. During the vegetative growth season, mature seeds and straw were studied in field experiment with spring oilseed rape (Brassica napus&nbsp;L.) cv. Star over five years. It was found that nitrogen concentration was the highest in the youngest plants. The increase of du

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12

YADAVA, PRANJAL, CHETANA AGGARWAL, RACHANA VERMA, KRISHAN KUMAR, and ISHWAR SINGH. "Effect of nitrogen-starvation on growth pattern and expression of nitrogen assimilation genes." Indian Journal of Agricultural Sciences 90, no. 1 (March 2, 2020): 195–200. http://dx.doi.org/10.56093/ijas.v90i1.98679.

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Studying plant response and adaptation under low nitrogen stress condition is pre-requisite to enhance nitrogen use efficiency in crops. The present study investigated the physiological and molecular responses of maize (Zea mays L.) to nitrogen stress during early vegetative stage. Maize seedlings were grown hydroponically under controlled environmental conditions in phytotron. One set of plants were nutritionally stressed by eliminating nitrogen source in hydroponic culture while the other set was provided with nitrogen (2 mM KNO3). Under nitrogen-starvation condition, plant growth and physio

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13

Chen, Haoran, Sylvie Renault, and John Markham. "The Effect of Frankia and Hebeloma crustiliniforme on Alnus alnobetula subsp. Crispa Growing in Saline Soil." Plants 11, no. 14 (July 16, 2022): 1860. http://dx.doi.org/10.3390/plants11141860.

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The mining of the oil sands region of Canada’s boreal forest creates disturbed land with elevated levels of salts. Understanding how native plants respond to salt stress is critical in reclaiming these lands. The native species, Alnus alnobetula subsp. crispa forms nitrogen-fixing nodules with Frankia, and ectomycorrhizae with a number of fungal species. These relationships may make the plant particularly well suited for restoring disturbed land. We inoculated A. alnobetula subsp. crispa with Frankia and Hebeloma crustiliniforme and exposed the plants to 0, 50, or 100 mM NaCl for seven weeks.

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14

Ma, Changkun, Qian Li, Zhaoxin Song, Lijun Su, Wanghai Tao, Beibei Zhou, and Quanjiu Wang. "Irrigation with Magnetized Water Alleviates the Harmful Effect of Saline–Alkaline Stress on Rice Seedlings." International Journal of Molecular Sciences 23, no. 17 (September 2, 2022): 10048. http://dx.doi.org/10.3390/ijms231710048.

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Saline–alkaline stress suppresses rice growth and threatens crop production. Despite substantial research on rice’s tolerance to saline–alkaline stress, fewer studies have examined the impact of magnetic water treatments on saline–alkaline-stressed rice plants. We explored the physiological and molecular mechanisms involved in saline–alkaline stress tolerance enhancement via irrigation with magnetized water using Nipponbare. The growth of Nipponbare plants was inhibited by saline–alkaline stress, but this inhibition was alleviated by irrigating the plants with magnetized water, as evidenced by

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15

Blumenthal, MJ, VP Quach, and PGE Searle. "Effect of soybean population density on soybean yield, nitrogen accumulation and residual nitrogen." Australian Journal of Experimental Agriculture 28, no. 1 (1988): 99. http://dx.doi.org/10.1071/ea9880099.

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The effect of soybean population density on soybean yield, nitrogen accumulation and residual nitrogen was examined at Camden, N.S.W. (34�S.). In the first experiment, treatments were soybeans (cv. Ransom) at 50, 100, 200 and 400 x 103 plants ha-1; maize (cv. XL66); and a weed-free fallow. Total dry matter yields of tops and grain yields were highest at 200x 103 plants ha-1 (6214 and 3720 kg ha-1, respectively). The yield component most affected by population density was number of branches per plant, with values decreasing with increasing population density. The proportion of unfilled pods was

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16

Zhou, Yong, Xia Li, Hui Liu, Yubao Gao, Wade J. Mace, Stuart D. Card, and Anzhi Ren. "Effects of endophyte infection on the competitive ability of Achnatherum sibiricum depend on endophyte species and nitrogen availability." Journal of Plant Ecology 12, no. 5 (March 21, 2019): 815–24. http://dx.doi.org/10.1093/jpe/rtz017.

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Abstract Aims The leaves of almost all terrestrial plant species are colonized by endophytic fungi. Compared to agronomic grasses, which usually harbor few endophytes, native grasses generally possess greater endophyte species diversity. Existing studies examining endophyte effects on natural grasses under competition normally considered the infection status (infected or uninfected), and rarely considered endophyte species. Methods We examined the effects of endophyte infection and of endophyte species on the interspecific competitive ability of a subdominant species, Achnatherum sibiricum, at

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17

Geneva, M., G. Zehirov, E. Djonova, N. Kaloyanova, G. Georgiev, and I. Stancheva. "The effect of inoculation of pea plants with mycorrhizal fungi and Rhizobium on nitrogen and phosphorus assimilation." Plant, Soil and Environment 52, No. 10 (November 17, 2011): 435–40. http://dx.doi.org/10.17221/3463-pse.

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The study evaluated the response of pea (Pisum sativum cv. Avola) to arbuscular mycorrhizal fungi (AM) species Glomus mosseae and Glomus intraradices and Rhizobium leguminosarum bv. viceae, strain D 293, regarding the growth, photosynthesis, nodulation and nitrogen fixation activity. Pea plants were grown in a glasshouse until the flowering stage (35 days), in 4 kg plastic pots using leached cinnamonic forest soil (Chromic Luvisols &ndash; FAO) at P levels 13.2 (P1) and 39.8 (P2) mg P/kg soil. The obtained results demonstrated that the dual inoculation of pea plants significantly increased

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18

Chen, Haoran, and John Markham. "The Interactive Effect of Elevated CO2 and Herbivores on the Nitrogen-Fixing Plant Alnus incana ssp. rugosa." Plants 10, no. 3 (February 26, 2021): 440. http://dx.doi.org/10.3390/plants10030440.

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Many studies have found that future predicted CO2 levels can increase plant mass but dilute N content in leaves, impacting antiherbivore compounds. Nitrogen-fixing plants may balance their leaf C:N ratio under elevated CO2, counteracting this dilution effect. However, we know little of how plants respond to herbivores at the higher CO2 levels that occurred when nitrogen-fixing plants first evolved. We grew Alnus incana ssp. rugosa was grown at 400, 800, or 1600 ppm CO2 in soil collected from the field, inoculated with Frankia and exposed to herbivores (Orgyia leucostigma). Elevated CO2 increas

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19

Sadras, V. O., and L. J. Wilson. "Nitrogen accumulation and partitioning in shoots of cotton plants infested with two-spotted spider mites." Australian Journal of Agricultural Research 48, no. 4 (1997): 525. http://dx.doi.org/10.1071/a96146.

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In cotton (Gossypium hirsutum L.), leaves are the main site of nitrogen reduction and constitute a large reservoir of organic nitrogen. Foliar herbivores, therefore, are likely to have detrimental effects on the nitrogen economy of the plant. A field experiment was conducted to investigate the effects of two-spotted spider mites (Tetranychus urticae Koch) on the accumulation and partitioning of nitrogen in cotton shoots. Control plants and plants infested with mites 3 times in the growing season were compared. Once established, mite colonies grew exponentially. After peaking at 35–64 mites/lea

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20

Liang, Yueming, Xunyang He, Xiangbi Chen, Yirong Su, Fujing Pan, and Lening Hu. "Low Frequency of Plants Associated with Symbiotic Nitrogen-Fixers Exhibits High Frequency of Free-Living Nitrogen Fixing Bacteria: A Study in Karst Shrub Ecosystems of Southwest China." Forests 13, no. 2 (January 21, 2022): 163. http://dx.doi.org/10.3390/f13020163.

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Plants associated with symbiotic nitrogen-fixers and soil free-living nitrogen-fixing bacteria are good indicators for detecting the source of nitrogen in natural ecosystems. However, the community composition and diversity of plants associated with symbiotic nitrogen-fixers and soil free-living nitrogen-fixing bacteria in karst shrub ecosystems remain poorly known. The community composition and diversity of soil free-living nitrogen-fixing bacteria and plants, as well as the soil physical–chemical properties were investigated in 21 shrub plots (including different topographies and plant types

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21

Pavlíková, D., M. Neuberg, E. Žižková, V. Motyka, and M. Pavlík. " Interactions between nitrogen nutrition and phytohormone levels in Festulolium plants." Plant, Soil and Environment 58, No. 8 (August 21, 2012): 367–72. http://dx.doi.org/10.17221/367/2012-pse.

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&nbsp; This study aims to reveal and to compare effect of two various systems of nitrogen nutrition, namely injection and sidedress application, on the levels of NO3&ndash; and phytohormones (cytokinins, abscisic acid (ABA), indole-3-acetic acid (IAA)) in Festulolium plants. Calcium nitrate (CN) or ammonium sulphate (AS) were used as N source in the pot experiment. The yield of Festulolium above and below ground biomass was more substantially enhanced after sidedress application of both AS or CN in comparison with injection application. The levels of endogenous cytokinins peaked 5 days

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22

Bijelic, Z., Z. Tomic, and D. Ruzic-Muslic. "The effect of nitrogen fertilization on production and qualitative properties of sown grasslands in the system of sustainable production." Biotehnologija u stocarstvu 27, no. 3 (2011): 615–30. http://dx.doi.org/10.2298/bah1103615b.

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Nitrogen fixation in grass-leguminous mixtures is not sufficient to satisfy the nitrogen requirements of plants, therefore it is necessary to compensate this deficiency by nitrogen from mineral fertilizers. Objective of this study is to present the effect of N application in grass-leguminous mixtures on their production and qualitative properties, i.e. to give an answer to the question if application of nitrogen fertilizers results in the increase or decrease of yield, quality and changes in the structural composition of the grassland. N from mineral fertilizers, especially considerable amount

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23

Markham, John H., and Corinthe Zekveld. "Nitrogen fixation makes biomass allocation to roots independent of soil nitrogen supply." Canadian Journal of Botany 85, no. 9 (September 2007): 787–93. http://dx.doi.org/10.1139/b07-075.

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Biomass allocation patterns in plants are known to be affected by soil nitrogen availability. Since nitrogen availability can depress symbiotic nitrogen fixation, and nitrogen fixation can make plant growth independent of soil nitrogen availability but is energetically costly, it is unclear how allocation patterns in nitrogen-fixing species should respond to variation in soil nitrogen availability. We examined the effect of nitrogen source and concentration on the growth and allocation patterns in the nitrogen-fixing shrub Alnus viridis subsp. crispa (Aiton) Turrill. Plants were grown with eit

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Farhangi-Abriz, S., R. Faegi-Analou, and N. Nikpour-Rashidabad. "Foliar Application of Sodium Molybdate Enhanced Nitrogen Uptake and Translocation in Soybean Plants by Improving Nodulation Process Under Salt Stress." Cercetari Agronomice in Moldova 50, no. 3 (September 1, 2017): 71–82. http://dx.doi.org/10.1515/cerce-2017-0027.

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Abstract Soil salinity with different harmful effects on plant growth and productivity is one of the main reasons in diminishing biological nitrogen fixation and nitrogen assimilation in legume plants. Molybdate has a key role on nitrogen metabolism of plants and can be has a beneficial effect on it. Thus, this experiment was conducted to evaluate the effects of sodium molybdate spraying (0.2 and 0.4% solutions in water) on nodulation, nitrogen uptake and translocation in soybean plants under different levels of salt stress (0, 5 and 10 dS m−1 NaCl, respectively). Salinity reduced the nodulati

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25

Knavel, Dean E. "Effects of Previous Tillage System and Nitrogen Rates on Yield and Nitrogen Concentration and Recovery by Turnip." HortScience 21, no. 6 (December 1986): 1337–38. http://dx.doi.org/10.21273/hortsci.21.6.1337.

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Abstract Foliage dry weight for a fall turnip (Brassica rapa L. Rapifera group) crop grown in plowed no-till (NT) plots that previously contained a cover crop of hairy vetch (Vicia villosa Roth.) (NT + V) was greater for plants grown in plots that were previously treated with N at 0 and 56 kg·ha−1 than with 112 kg·ha−1. There were significant linear effects of N rates on fresh root and dry foliage weights of turnip plants in plots that had not contained vetch (NT − V), but not for plants in NT + V plots. About 64 and 48 kg·ha−1 of N were recovered by turnip plants grown in NT + V plots that we

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26

Atanasova, E. "Effect of nitrogen sources on the nitrogenous forms and accumulation of amino acid in head cabbage." Plant, Soil and Environment 54, No. 2 (February 7, 2008): 66–71. http://dx.doi.org/10.17221/438-pse.

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The effect of two different nitrogen sources: ammonium nitrate and calcium nitrate, applied at increased rates, on the content of the total nitrogen, protein and non-protein nitrogen, and the content and composition of amino acids in head cabbage leaves was studied. The higher nitrogen accumulation was established at the ammonium nitrate fertilization compared to the calcium nitrate, but the application of Ca(NO<sub>3</sub>)<sub>2</sub> resulted in a higher content of nitrate nitrogen. More protein nitrogen was also observed in plants with Ca(NO<sub>3</sub>)

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27

Kirova, E., D. Nedeva, A. Nikolova, and G. Ignatov. "Changes in the biomass production and total soluble protein spectra of nitrate-fed and nitrogen-fixing soybeans subjected to gradual water stress." Plant, Soil and Environment 51, No. 5 (November 19, 2011): 237–42. http://dx.doi.org/10.17221/3580-pse.

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The effect of the sources of nitrogen nutrition (nitrogen fixation or nitrate assimilation) and a gradual water stress on the relative water content, total fresh and dry biomass production, leaf growth, and changes in the total soluble protein spectra were studied. The plants were cultivated as soil cultures in a naturally illuminated greenhouse. Comparative studies were carried out with respect to well-watered, control plants. Nitrogen-fixing control and drought plants had relatively smaller root development but better relative water content and large leaf area on the last sampling day than n

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Xu, Yi Xin, Hua Yong Zhang, Zong Han Li, Fei Li, and Xiang Xu. "Assessing the Eutrophication Status of Qixing Wetland and the Effect of Plants." Advanced Materials Research 807-809 (September 2013): 1870–74. http://dx.doi.org/10.4028/www.scientific.net/amr.807-809.1870.

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The comprehensive trophic level index has been applied to assess eutrophication status of QiXing Wetland. The five subzones of QiXing Wetland with different vegetation pattern have different eutrophication status. The comprehensive trophic level index is mainly affected by TN and TP at high concentration of nitrogen and phosphorus. Therefore, the plant communities can significantly influence on eutrophication status of the wetland through removing nitrogen and phosphorus in water. Three mainly dominant plants in wetland are Phragmites australis, Nelumbo nucifera and Typha orientalis Presl. The

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29

Shu-Li, NIU, and JIANG Gao-Ming. "Effect of Elevated CO2 on Legume Plants With Nitrogen Fixation." Chinese Journal of Plant Ecology 27, no. 6 (2003): 844–51. http://dx.doi.org/10.17521/cjpe.2003.0121.

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Maevskaya, S. N., and N. G. Bukhov. "Effect of Light Quality on Nitrogen Metabolism of Radish Plants." Russian Journal of Plant Physiology 52, no. 3 (May 2005): 304–10. http://dx.doi.org/10.1007/s11183-005-0046-1.

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Becker, Silvia Jiménez, Maria Teresa Lao, and Mari Luz Segura. "Effect and Empirical Models of Nitrogen Uptake Under Different Nitrogen Sources in Dieffenbachia amoena." HortScience 43, no. 2 (April 2008): 575–79. http://dx.doi.org/10.21273/hortsci.43.2.575.

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Adjusting fertility programs according to peak demand periods will help prevent periodic nutrient disorders during crop growth, allowing enhanced use efficiency of water and fertilization. The objectives of this article were to investigate 1) the evolution of the changes in the concentration of nitrate and ammonium in the recycled solution with different N-NO3 –/N-NH4 + ratios; 2) the influence of the N form supply (N-NO3 – or N-NH4 +) on the nitrogen uptake, the nitrogen:water uptake ratio, and nitrogen use and uptake efficiency; and 3) the development of empirical models that would allow the

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Aflakpui, G. K. S., P. J. Gregory, and R. J. Froud-Williams. "GROWTH AND BIOMASS PARTITIONING OF MAIZE DURING VEGETATIVE GROWTH IN RESPONSE TO STRIGA HERMONTHICA INFECTION AND NITROGEN SUPPLY." Experimental Agriculture 38, no. 3 (June 19, 2002): 265–76. http://dx.doi.org/10.1017/s0014479702003022.

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The effect of the root hemiparasitic angiosperm Striga hermonthica on the gowth, photosynthesis and partitioning of biomass in maize was studied in glasshouse experiments in two seasons. In both seasons, nitrogen was applied to the plants at rates equivalent to 20, 60 and 120 kg ha−1. There was no significant Striga×nitrogen interaction on the responses measured. Averaged across all nitrogen treatments, maize plants infected with S. hermonthica had smaller leaf areas and accumulated less biomass, than did uninfected plants. The leaf area of infected and uninfected plants increased asymptotical

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Harbur, Matthew M., and Micheal D. K. Owen. "Influence of relative time of emergence on nitrogen responses of corn and velvetleaf." Weed Science 54, no. 5 (October 2006): 917–22. http://dx.doi.org/10.1614/ws-05-167r1.1.

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Nitrogen (N) management markedly affects weed competition with crops. The effect of N availability on plant competition varies with a plant's abilities to capture and use N. Accordingly, we expected the N effect on plant competition to change with the relative emergence time of competing individuals. This hypothesis was tested by growing corn and velvetleaf plants in target and neighbor roles and comparing their N responses. Sowing times were varied, so that target plant emergent dates were constant, whereas neighbor plants were sown to emerge 7 d before, with, or 7 d after targets. Seedlings

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Akter, Asma, and Jan Klečka. "Water stress and nitrogen supply affect floral traits and pollination of the white mustard, Sinapis alba (Brassicaceae)." PeerJ 10 (April 18, 2022): e13009. http://dx.doi.org/10.7717/peerj.13009.

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Changes in environmental conditions are likely to have a complex effect on the growth of plants, their phenology, plant-pollinator interactions, and reproductive success. The current world is facing an ongoing climate change along with other human-induced environmental changes. Most research has focused on the impact of increasing temperature as a major driving force for climate change, but other factors may have important impacts on plant traits and pollination too and these effects may vary from season to season. In addition, it is likely that the effects of multiple environmental factors, s

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Zhou, Jialong, Zhelun Xu, Shanshan Zhong, Youli Yu, Zhongyi Xu, Daolin Du, and Congyan Wang. "Nitrogen Influence to the Independent Invasion and the Co-Invasion of Solidago canadensis and Conyza canadensis via Intensified Allelopathy." Sustainability 14, no. 19 (September 22, 2022): 11970. http://dx.doi.org/10.3390/su141911970.

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The allelopathy of alien plants is critical to their successful invasion. In nature, two alien plants can co-invade the same habitat. Changes in the forms of nitrogen may have the potential to alter the invasion process of alien plants by causing alterations in their allelopathy. This study aimed to evaluate the individual and combined allelopathy of two alien plants from the Asteraceae family, Solidago canadensis L. and Conyza canadensis (L.) Cronq. This study examined the effects of aqueous leaf extracts of the two alien plants with different nitrogen forms (NO3−N, NH4−N, and CO(NH2)2−N, and

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Makus, D. J. "115 EFFECT OF NITROGEN SOURCE AND LEVEL ON VEGETABLE AMARANTH." HortScience 29, no. 5 (May 1994): 444f—444. http://dx.doi.org/10.21273/hortsci.29.5.444f.

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On 3 Aug. 1993, 20-day-old `Hinn Choy' plants (Amaranthus tricolor L.) were-planted on 15 × 15 cm spacings in 4-row beds at 1.3 m row spacings in a Leadvale silt loam soil. Nitrogen sources of NH4, NO3 and NH4 NO3 were used at rates of 0, 100 and 200 kg/ha, and were split-applied at and 1 week after transplanting. All treatments received both supplemental K and P at the rate of 90 kg/ha at planting. Plants were harvested 31 days after transplanting. Plants given the NH, source were taller, and were higher in yield, leaf chlorophyll, total carotenoids and Mn (dry wt basis) than were plants give

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Tufail, Muhammad Aammar, María Touceda-González, Ilaria Pertot, and Ralf-Udo Ehlers. "Gluconacetobacter diazotrophicus Pal5 Enhances Plant Robustness Status under the Combination of Moderate Drought and Low Nitrogen Stress in Zea mays L." Microorganisms 9, no. 4 (April 17, 2021): 870. http://dx.doi.org/10.3390/microorganisms9040870.

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Plant growth promoting endophytic bacteria, which can fix nitrogen, plays a vital role in plant growth promotion. Previous authors have evaluated the effect of Gluconacetobacter diazotrophicus Pal5 inoculation on plants subjected to different sources of abiotic stress on an individual basis. The present study aimed to appraise the effect of G. diazotrophicus inoculation on the amelioration of the individual and combined effects of drought and nitrogen stress in maize plants (Zea mays L.). A pot experiment was conducted whereby treatments consisted of maize plants cultivated under drought stres

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Pytlarz-Kozicka, M. "The effect of nitrogen fertilization and anti-fungal plant protection on sugar beet yielding." Plant, Soil and Environment 51, No. 5 (November 19, 2011): 232–36. http://dx.doi.org/10.17221/3579-pse.

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Sugar beet yielding and, thus, the profitability of its cultivation depends on various conditions. These are mainly a&nbsp;dose of nitrogen fertilizing and anti-fungal plant protection. Based on the research carried out in a private-owned farm in Biała commune, Opole province, Poland, it was observed that the most important factors influencing plant development and root yield of sugar beets (var. Kassandra and Cortina) were genetic features of the investigated varieties and fungal control. They increased considerably root yield and sugar content. The doubled nitrogen dose from 90 to 180 kg

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Matsera, Olha. "EFFECT OF SOWING METHOD AND N APPLICATION ON SEED YIELD AND N USE EFFICIENCY OFWINTER OILSEED RAPE." Agriculture and Forestry, no. 4 (December 18, 2020): 76–85. http://dx.doi.org/10.37128/2707-5826-2020-4-7.

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In the conditions of the Right-Bank Forest-Steppe, the cultivation of winter rapeseed crops after winter wheat usually leads to a delay in sowing the latter and deterioration of autumn plant development. Based on data from a field experiment conducted in 2016/2017, 2017/2018 and 2018/2019, the aim of this study was to investigate how sowing delay affects seed yield, nitrogen uptake by seeds and significant efficiency of nitrogen use by winter rape plants; to check the ability of autumn and spring application of nitrogen fertilizers to compensate for the negative impact of delays in sowing crop

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Singh, Abhai Pratap, Rashmi Singh, Usha Mina, M. P. Singh, and C. K. Varshney. "Effects of different doses of nitrogen treatments on isoprene emission from Ficus glomerata." Journal of Applied and Natural Science 2, no. 1 (June 1, 2010): 13–16. http://dx.doi.org/10.31018/jans.v2i1.86.

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In the present investigation on the effect of nitrogen treatments on emission of isoprene from Ficus glomerata has been evaluated. Four sets of plants were treated with following four doses of nitrogen in the form of ammonium nitrate solution (i) 10 mM (ii) 50 mM (iii) 100 mM (iv) 200 (mM) and control set was designed without any treatment. Nitrogen treated as well as control plants were sampled for isoprene emission using a dynamic flow through enclosure chamber technique and samples were analysed with the help of GC-FID. Isoprene emissions from control, 10 mM, 50 mM, 100 mM, and 200 mM nitro

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Terrer, César, Sara Vicca, Bruce A. Hungate, Richard P. Phillips, and I. Colin Prentice. "Mycorrhizal association as a primary control of the CO2 fertilization effect." Science 353, no. 6294 (June 30, 2016): 72–74. http://dx.doi.org/10.1126/science.aaf4610.

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Plants buffer increasing atmospheric carbon dioxide (CO2) concentrations through enhanced growth, but the question whether nitrogen availability constrains the magnitude of this ecosystem service remains unresolved. Synthesizing experiments from around the world, we show that CO2 fertilization is best explained by a simple interaction between nitrogen availability and mycorrhizal association. Plant species that associate with ectomycorrhizal fungi show a strong biomass increase (30 ± 3%, P < 0.001) in response to elevated CO2 regardless of nitrogen availability, whereas low nitrogen availab

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Kim, Tehryung, Harry A. Mills, and Hazel Y. Wetzstein. "364 Studies on the Effects of Nitrogen Source on Pecan Nutrient Uptake and Plant Growth and Development." HortScience 35, no. 3 (June 2000): 455B—455. http://dx.doi.org/10.21273/hortsci.35.3.455b.

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As a plant nutrient, nitrogen is the element in highest demand in terms of quantity and makes up about 2% to 3% of plant dry matter. In this study, we evaluated the effect of nitrogen source on plant growth and nutrient uptake in pecan (Carya illinoensis). Seedlings were hydroponically grown under three nitrogen nutrient regimes where the ratio of nitrate: ammonium was varied, i.e., 3:1, 1:1, and 1:3. High ammonium nutrition had an inhibiting effect on seedling growth. Plants grown under 1:3 (nitrate: ammonium) exhibited significantly lower biomass, decreased root/shoot ratio, and lower specif

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Le, Won Je, and Hojoung Lee. "Response to Salinity Stress in Plants and nitrogen effect: About hormone signaling pathway and root development." Institute of Life Science and Natural Resources 30 (December 31, 2022): 15–22. http://dx.doi.org/10.33147/lsnrr.2022.30.1.15.

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Around the world, 110 billion hectares of cultivated land in more than 100 countries are affected by soil salinity due to rapid climate change. Salinity and drought stress among various abiotic stresses are the main causes of significant decrease in crop production worldwide. In the 21st century, there are also predictions that 50% of the arable land will be affected by soil salinity. To alleviate the salt stress of crops and further increase production, mechanisms related to various physiological phenomena related to plant salt stress should be identified at the molecular level. In addition,

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Kirova, E., D. Nedeva, A. Nikolova, and G. Ignatov. "Changes in the electrophoretic spectra of antioxidant enzymes in nitrate-fed and nitrogen-fixing soybean subjected to gradual water stress." Acta Agronomica Hungarica 52, no. 4 (March 1, 2005): 323–32. http://dx.doi.org/10.1556/aagr.52.2004.4.1.

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The effect of two sources of nitrogen (nitrogen fixation or nitrate assimilation) and gradual water stress on theelectrophoretic spectra of peroxidase, catalase and superoxide dismutase was studied in soybean leaves. An increase in H2O2 production was observed, especially after the prolonged drought treatment. At 50% drought the activity of anionic peroxidase activity for isoenzymes Nos. 2 and 7+8 significantly increased (by 54 and 18%, respectively) in the leaves of nitrate-fed plants compared to the control plants; for nitrogen-fixing plants these values were 31 and 14%, respectively. In the

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Casey, Christine A., and Michael J. Raupp. "Effect of Supplemental Nitrogen Fertilization on the Movement and Injury of Azalea Lace Bug (Stephanitis pyrioides(Scott)) to Container-grown Azaleas." Journal of Environmental Horticulture 17, no. 2 (June 1, 1999): 95–98. http://dx.doi.org/10.24266/0738-2898-17.2.95.

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Abstract Certain arthropods feed selectively and perform better on plants and plant tissues with elevated levels of nitrogen. Yet it is a common practice to use supplemental nitrogen in the production and maintenance of woody landscape plants. The link between elevated nitrogen levels and improved performance of herbivorous arthropods is particularly strong for sap suckers in the order Heteroptera, the majority of which are phloem feeders. There have been no studies to date on the effects of fertilization of woody plants on important mesophyll-feeding Heteroptera, such as azalea lace bug. We e

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Adebusola, Adewole, Odjegba Victor, Iwuala Emmanuel, and Afroz Alam. "Effect of nitrogen application on the phytochemical production in Jatropha curcas L. (Angiosperms: Euphorbiaceae) during drought conditions." Plant Science Today 6, no. 2 (April 28, 2019): 183–89. http://dx.doi.org/10.14719/pst.2019.6.2.523.

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Nitrogen is an important nutrient for the successful metabolism of plants, but its occurrence in soil is always very limited. This nutrient has a significant role to preserve plants during various stress conditions by altering the production rate of phytochemicals as defense weapons. Hence, this study was carried out to analyze the effect of nitrogen supply on the phytochemical composition and relative water content in Jatropha curcas L. under a simulated drought condition. The selected seedlings were grown from stem cuttings and categorized into different treated three groups along with the c

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Aliyev, Z. H. "Azerbaijan effects on Agrochemical Indications and Effect of Erosion Process on Plant Productivity." Pesticide Science and Pest Control 1, no. 3 (August 8, 2022): 01–04. http://dx.doi.org/10.58489/2833-0943/012.

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Taking all these into account, it is important to increase the fertility of the soil from the erosion process in Ismayilli and to prevent the washing of fodder crops from perennial herbs. The cultivation of these plants in the mountainous regions protects the slopes from the terrible erosion process and provides the animals with a strong fodder. It is proved by the results of the research that restoration of fertility and ecological balance of erosion lands and the implementation of soil-agro-technical measures to increase productivity are of great importance. Due to the application of these m

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Jingang, Liang, Luan Ying, Jiao Yue, Sun Shi, Wu Cunxiang, Wu Haiying, Zhang Mingrong, Zhang Haifeng, Zheng Xiaobo, and Zhang Zhengguang. "High-methionine soybean has no significant effect on nitrogen-transforming bacteria in rhizosphere soil." Plant, Soil and Environment 64, No. 3 (March 21, 2018): 108–13. http://dx.doi.org/10.17221/750/2017-pse.

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Transgenic plants may induce shifts in the microbial community composition that in turn alter microbially-mediated nutrient cycling in soil. Studies of how specific microbial groups respond to genetically modified (GM) planting help predict potential impacts upon processes performed by these groups. This study investigated the effect of transgenic high-methionine soybean cv. ZD91 on nitrogen-fixing and ammonia-oxidizing bacterial populations. A difference in nitrogen-fixing or ammonia-oxidizing bacteria community composition was not found, suggesting that cv. ZD91 does not alter the bacterial

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SAIA, S., E. BENÍTEZ, J. M. GARCÍA-GARRIDO, L. SETTANNI, G. AMATO, and D. GIAMBALVO. "The effect of arbuscular mycorrhizal fungi on total plant nitrogen uptake and nitrogen recovery from soil organic material." Journal of Agricultural Science 152, no. 3 (February 7, 2013): 370–78. http://dx.doi.org/10.1017/s002185961300004x.

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SUMMARYArbuscular mycorrhizal (AM) fungi increase nitrogen (N) uptake by their host plants, but their role in plant N capture from soil organic material is still unclear. In particular, it is not clear if AM fungi compete with the host plant for the N coming from the decomposing organic matter (OM), especially when the AM extraradical mycelium (ERM) and plant roots share the same soil volume. The goal of the present research was to study the effects of AM fungi on wheat N capture after the addition of 15N-labelled OM to soil. Durum wheat (Triticum durum) was grown under controlled conditions i

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Fehér, Bernadett, Ibolya Demeter, Tibor Aranyos, Attila Tomócsik, and Mariann Makádi. "The effect of wet compost extract on the root tubers of green pea." Acta Agraria Debreceniensis, no. 72 (May 16, 2017): 51–54. http://dx.doi.org/10.34101/actaagrar/72/1586.

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Nitrogen plays significant role in the life of plants, it could be the main limiting factor of plant growth. Sustainable plant nutrition pays attention to satisfy the plants’ nutrient demand without chemical fertilizers, e.g. by bounding the atmospheric nitrogen. The nitrogen fixing organizations play important role in supplying plants with nitrogenbecause the N2-fixingbacteria can fix high amounts of nitrogen.Many effects of the sewage sludge compost extracts is known in the literature. We studied the effect of sewage sludge compost water extract in laboratory conditions on the growth of Rhiz

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