Artykuły w czasopismach na temat „Arboretum (Firm)”
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1
Kempler, Chaim, i J. T. Kabaluk. "Fruiting and Ripening Characteristics of Actinidia arguta Hardy Kiwi". HortScience 30, nr 4 (lipiec 1995): 807F—808. http://dx.doi.org/10.21273/hortsci.30.4.807f.
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In 1989, 2-year-old A. arguta varieties Geneva, Annaysana, Dumburton Oaks, Fairchild, National Arboretum, 74-7', 74-8, and the self-fertile variety Issai, were planted in Agassiz, B.C., on a well-drained soil site. The plants were grown with a single trunk to 1.8-m with permanent cordons, and fruiting laterals trained on a 2.1-m-wide winged T-bar trellis support. Plant spacing was 2.75 m within the row and 4.8 m between rows. Staminate varieties (Meader and 74-6) were planted at a 1:6 ratio of male: female for pollination. Fruiting canes were renewed every 2 years by winter pruning. All plants began to bear harvestable yields by 1991. A. arguta vine required 622 heat units from bud break to full bloom and the average flowering date was 29 May. Fruit begin to mature during September, depending on the variety. `Geneva', `Annaysana', and `Issai' were the most suitable for commercial production. In 1993, they produced a yield of 26, 38, and 26 kg/vine, with average fruit weight of 7.7, 6.3, and 4.8 g, respectively. `Geneva' was the earliest to mature, followed by `Annaysana' and `'Issai'. A. arguta ripen very unevenly and, at harvest, a certain proportion of the fruit are over-ripe. Fruit are best harvested early when they are firm. Storing the fruit at 1C improved ripening uniformity.
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Kempler, Chaim, i J. T. Kabaluk. "Fruiting and Ripening Characteristics of Actinidia arguta Hardy Kiwi". HortScience 30, nr 4 (lipiec 1995): 807F—808. http://dx.doi.org/10.21273/hortsci.30.4.807.
Pełny tekst źródłaStreszczenie:
In 1989, 2-year-old A. arguta varieties Geneva, Annaysana, Dumburton Oaks, Fairchild, National Arboretum, 74-7', 74-8, and the self-fertile variety Issai, were planted in Agassiz, B.C., on a well-drained soil site. The plants were grown with a single trunk to 1.8-m with permanent cordons, and fruiting laterals trained on a 2.1-m-wide winged T-bar trellis support. Plant spacing was 2.75 m within the row and 4.8 m between rows. Staminate varieties (Meader and 74-6) were planted at a 1:6 ratio of male: female for pollination. Fruiting canes were renewed every 2 years by winter pruning. All plants began to bear harvestable yields by 1991. A. arguta vine required 622 heat units from bud break to full bloom and the average flowering date was 29 May. Fruit begin to mature during September, depending on the variety. `Geneva', `Annaysana', and `Issai' were the most suitable for commercial production. In 1993, they produced a yield of 26, 38, and 26 kg/vine, with average fruit weight of 7.7, 6.3, and 4.8 g, respectively. `Geneva' was the earliest to mature, followed by `Annaysana' and `'Issai'. A. arguta ripen very unevenly and, at harvest, a certain proportion of the fruit are over-ripe. Fruit are best harvested early when they are firm. Storing the fruit at 1C improved ripening uniformity.
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Egolf, Donald R. "Pyracantha × ‘Apache’". HortScience 22, nr 1 (luty 1987): 173–74. http://dx.doi.org/10.21273/hortsci.22.1.173.
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Abstract Pyracantha × ‘Apache’, the 5th U.S. National Arboretum introduction, combines disease resistance and compact dwarf growth habit. Pyracantha, commonly known as fire-thom, is a major nursery container-produced plant that is primarily grown for the spectacular fruit display. The four previously introduced cultivars are ‘Shawnee’, NA 28179 (1), ‘Mohave’, NA 32225 (2), ‘Navaho’, NA 38451, and ‘Teton’, NA 38450 (3).
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Joshi, Karishma, Sarla Shashni i Vaibhav Gosavi. "Distribution pattern of Rhododendron arboreum in mountainous region of India: A review for possible adaptation against the climate change and anthropogenic drivers". Journal of Non Timber Forest Products 28, nr 1 (30.11.2021): 1–7. http://dx.doi.org/10.54207/bsmps2000-2021-69a9d5.
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Rhododendron is an economically and ecologically one of the most important plants of India. Of the many species, Rhododendron arboreum Sm. is the only one to be found in the Western Ghats and in the Indian Himalayan Regions. Due to rise in temperature and change in climatic conditions, this species, like others, is also experiencing a change in its habitat. Therefore, the study of this species becomes more important as it, besides being a keystone species, is also a source of income generation to the people residing in the Indian Himalayan Regions. It is threatened not only from climate change but also from forest fire and over-exploitation. Through Habitat Niche Modelling of Rhododendron arboreum we can predict its distribution, thus helping us in understanding its future condition. This will also provide us an insight to its mitigations measures to the threats imposed by changing climate and/or over-exploitation. This review is a small effort in this direction.
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Hudak, Andrew T., Akira Kato, Benjamin C. Bright, E. Louise Loudermilk, Christie Hawley, Joseph C. Restaino, Roger D. Ottmar i in. "Towards Spatially Explicit Quantification of Pre- and Postfire Fuels and Fuel Consumption from Traditional and Point Cloud Measurements". Forest Science 66, nr 4 (22.01.2020): 428–42. http://dx.doi.org/10.1093/forsci/fxz085.
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Abstract Methods to accurately estimate spatially explicit fuel consumption are needed because consumption relates directly to fire behavior, effects, and smoke emissions. Our objective was to quantify sparkleberry (Vaccinium arboretum Marshall) shrub fuels before and after six experimental prescribed fires at Fort Jackson in South Carolina. We used a novel approach to characterize shrubs non-destructively from three-dimensional (3D) point cloud data collected with a terrestrial laser scanner. The point cloud data were reduced to 0.001 m–3 voxels that were either occupied to indicate fuel presence or empty to indicate fuel absence. The density of occupied voxels was related significantly by a logarithmic function to 3D fuel bulk density samples that were destructively harvested (adjusted R2 = .32, P < .0001). Based on our findings, a survey-grade Global Navigation Satellite System may be necessary to accurately associate 3D point cloud data to 3D fuel bulk density measurements destructively collected in small (submeter) shrub plots. A recommendation for future research is to accurately geolocate and quantify the occupied volume of entire shrubs as 3D objects that can be used to train models to map shrub fuel bulk density from point cloud data binned to occupied 3D voxels.
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Ramamonjisoa, Noelikanto, i Akira Mori. "Growth, developmental, and size structure responses in tadpole prey under increasing threat from gape-limited newts". Canadian Journal of Zoology 97, nr 12 (grudzień 2019): 1116–21. http://dx.doi.org/10.1139/cjz-2019-0067.
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Size variability within a cohort can have profound effects on community ecology and evolution. Although competition for resources generally increases size variability, the effect of (non-consumptive) predation on this demographic trait remains relatively poorly understood. Existing models suggest a positive correlation between growth rate (mediated by resource level) and expression of size variability (as measured by the coefficient of variation) in prey cohorts. We tested this prediction by exposing the tadpoles of the Japanese Forest Green Treefrog (Rhacophorus arboreus (Okada and Kawano, 1924) = Zhangixalus arboreus (Okada and Kawano, 1924)) to the non-lethal presence of gape-limited Japanese Fire-bellied Newts (Cynops pyrrhogaster (Boie, 1826)) at low and high predator densities in an outdoor mesocosm experiment. Tadpole growth rates and periphyton biomass increased with newt density. But in contrast to prediction, elevated growth rates did not increase but, reversely, decreased cohort size variability in the tadpoles. We discuss two potential mechanisms behind this outcome. First, increased resource availability mediated by predator feeding may have reduced the strength of competition, ultimately leading to more evenly distributed resource gains among individuals; second, if smaller individuals grew relatively faster than larger individuals, as to quicken entry to a size refuge against the gape-limited predator, then inter-individual size differences could diminish over time.
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Takeda, Fumiomi, Gerard Krewer, Changying Li, Daniel MacLean i James W. Olmstead. "Techniques for Increasing Machine Harvest Efficiency in Highbush Blueberry". HortTechnology 23, nr 4 (sierpień 2013): 430–36. http://dx.doi.org/10.21273/horttech.23.4.430.
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Northern highbush (NH) blueberry (Vaccinium corymbosum) and southern highbush (SH) blueberry (V. corymbosum hybrids) have fruit that vary in firmness. The SH fruit is mostly hand harvested for the fresh market. Hand harvesting is labor-intensive requiring more than 500 hours/acre. Rabbiteye blueberry (V. virgatum) tends to have firmer fruit skin than that of NH blueberry and has been mostly machine harvested for the processing industry. Sparkleberry (V. arboreum) has very firm fruit. With the challenges of labor availability, efforts are under way to produce more marketable fruit using machine harvesting. This could require changing the design of harvesting machine and plant architecture, and the development of cultivars with fruit that will bruise less after impact with hard surfaces of machines. The objectives of this study were to determine the fruit quality of machine-harvested SH blueberry, analyze the effect of drop height and padding the contact surface on fruit quality, investigate the effect of crown restriction on ground loss, and determine the effect of plant size on machine harvestability. The fruit of ‘Farthing’, ‘Scintilla’, ‘Sweetcrisp’, and several selections were either hand harvested or machine harvested and assessed during postharvest storage for bruise damage and softening. Machine harvesting contributed to bruise damage in the fruit and softening in storage. The fruit of firm-textured SH blueberry (‘Farthing’, ‘Sweetcrisp’, and selection FL 05-528) was firmer than that of ‘Scintilla’ after 1 week in cold storage. Fruit drop tests from a height of 20 and 40 inches on a plastic surface showed that ‘Scintilla’ was more susceptible to bruising than that of firm-textured ‘Farthing’ and ‘Sweetcrisp’. When the contact surface was cushioned with a foam sheet, bruise incidence was significantly reduced in all SH blueberry used in the study. Also, the fruit dropped 40 inches developed more bruise damage than those dropped 20 inches. Ground loss during machine harvesting was reduced from 24% to 17% by modifying the rabbiteye blueberry plant architecture. Further modifications to harvesting machines and plant architecture are necessary to improve the quality of machine-harvested SH and rabbiteye blueberry fruit and the overall efficiency of blueberry (Vaccinium species and hybrids) harvesting machines.
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Ostrihoň, Milan, Michaela Korená Hillayová, Katarína Korísteková, Adriana Leštianska, Martin Jančo, Tomáš Vida, Jaroslav Vido i Jaroslav Škvarenina. "Influence of meteorological factors on the moisture content of fine forest fuels: responses of fire danger class to different microclimates on the example of European beech (Fagus sylvatica L.) stands". Journal of Hydrology and Hydromechanics 72, nr 2 (9.05.2024): 223–37. http://dx.doi.org/10.2478/johh-2024-0005.
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Abstract Due to the increased number of forest fires, a detailed examination and knowledge of the effects of the microclimatic conditions of forests is currently significant. The study carried out in Arboretum Borova hora (Slovak Republik), investigates the influence of meteorological factors (air temperature, relative humidity), the value of the Angström index, and the danger class of the Angström index on the moisture content of fine fuel at the edge of a beech forest stand, but also in its interior. We tested three working hypotheses: a) meteorological conditions differ significantly between the edge and the interior of the beech forest, b) the moisture content of fine fuel is higher in the beech forest interior than at the forest edge, c) the Angström index fire danger class is higher at the edge of the beech forest than in its interior. We created a calibration curve that was also used to measure the humidity of beech leaves with the help of the ME 2000 hygrometer. Our results show that edge beech stands are significantly more susceptible to fires, lower air humidity and fine fuel moisture content, and higher air temperatures than forest interiors. From our point of view, the microclimate is considered the main factor that explains the difference between the vegetation structure of the forest edge and the forest interior.
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Nurjanah, Nurjanah, i Samsir . "CSR PROGRAM PT PERTAMINA BASED ON COMMUNITY EMPOWERMENT IN PEAT ECOTOURISM DEVELOPMENT". Sosiohumaniora 23, nr 2 (5.07.2021): 269. http://dx.doi.org/10.24198/sosiohumaniora.v23i2.32527.
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Environmental problems that require serious handling are the problem of land and forest fires, especially on peatlands which cause losses, especially economic and environmental aspects. Peatlands are a natural resource that has the potential to be utilized for the welfare of the community. Utilization of peatlands is not only for agriculture, plantations and residential land, but can be used as peat ecotourism. The large number of peatlands that were initially not utilized, and most of them became unproductive idle lands, can be managed properly and are able to contribute samsirto improving the welfare of the surrounding communities through the company’s CSR program. This paper aims to analyze the management of the CSR program in the development of peat ecotourism in Bukit Batu DistrictPakning River.Researchers collected field data through interviews, observation and documentation. The results showed that the company’s CSR program is directed at developing various community empowerment programs, aiming for the community to have the power, strength or ability in physical and material aspects, as well as economic aspects.Utilization of post-fire peatlands with community empowerment in the process of developing peatland ecotourism through the Peat Typical Tree Planting program on burned land, the development of the Environmental-Based School Curriculum program and the Peat Arboretum Development program. The management of the CSR program is carried out through the planning, implementation and evaluation stages. The management of the CSR program is analyzed throughCommunity Based Tourism (CBT) Model which is a tourism development planning strategy.
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Olmstead, James W., Hilda Patricia Rodríguez Armenta i Paul M. Lyrene. "Using Sparkleberry as a Genetic Source for Machine Harvest Traits for Southern Highbush Blueberry". HortTechnology 23, nr 4 (sierpień 2013): 419–24. http://dx.doi.org/10.21273/horttech.23.4.419.
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Because of financial and labor concerns, growers are interested in using machine harvesting for fruit destined to be fresh marketed. Machine harvest of highbush blueberry (Vaccinium corymbosum) has typically been used to obtain large volumes of fruit destined for processing. Bush architecture, easy detachment of mature berries compared with immature berries, loose fruit clusters, small stem scar, firm fruit, and a concentrated ripening period are breeding goals to develop cultivars amenable to machine harvest. In the University of Florida (UF) southern highbush blueberry [SHB (Vaccinium corymbosum hybrids)] breeding program, sparkleberry (Vaccinium arboreum) has been used in wide crosses in an attempt to introgress traits that may be valuable for machine harvesting, namely upright growth habit with a narrow crown and long flower and fruit pedicels creating loose fruit clusters. Two eras of sparkleberry hybridization experiments have occurred since the early 1980s. The first era used darrow’s evergreen blueberry (Vaccinium darrowii) as a bridge between sparkleberry and tetraploid SHB, with the recently released cultivar FL 01-173 (sold under the trademarked name Meadowlark) as an example of the end product. The second era has used chromosome doubling to develop polyploid sparkleberry selections that were directly crossed with tetraploid SHB. After 1 year of evaluation, a SHB × (SHB × sparkleberry) population developed for linkage and quantitative trait locus mapping showed abundant variation for length:width ratio of the plant, but similarity to the highbush phenotype for peduncle and pedicel length of the fruit. These first evaluations indicate evidence of introgression and provide an initial step toward improved cultivars for mechanical harvesting.
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Purwanto, W., R. Hidayat, H. D Marcelino i M. F. Widhagdha. "Land and forest fire disaster management through the arboretum gambut and community empowerment of masyarakat peduli api (mpa) csr program pt pertamina (persero) ru ii sungai pakning". IOP Conference Series: Earth and Environmental Science 683, nr 1 (1.03.2021): 012082. http://dx.doi.org/10.1088/1755-1315/683/1/012082.
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Vale, Vagner Santiago do, Thales Alves Tormim da Veiga, Jamir Afonso do Prado Júnior, Lilian Cristina da Silva Santos, Jovan Martins Rios i João Paulo Costa. "FUNCTIONAL TRAITS IN THE ARBOREAL COMPONENT OF THE CERRADO VEGETABLE COMMUNITY". FLORESTA 51, nr 2 (16.03.2021): 311. http://dx.doi.org/10.5380/rf.v51i2.64909.
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The current study aimed to describe functional attributes of arboreal species in fragments of sensu stricto Cerrado areas with a transition to Cerradão in Ipameri – GO to describe which characteristics are more representative in these phytophysiognomies. Ten individuals were sampled for each of the twenty arboreous species most commonly found in the region. Functional attributes related to the architecture of the aerial part of the tree and functional leaf traits were collected. Once the functional traits were evaluated, an analysis of variance and a posterior Tukey test at 0.5% were performed. Then, the data were standardized, and the species were functionally grouped. The results showed great variability of the functional characteristics forming two groups of species with similar characteristics. Group 1 was constituted by species with functional traits proper to survival in adverse environmental conditions, such as poor soils, seasonality, and natural or provoked incidents, like fire. Group 2, on the other hand, apparently points to functional traits related to success and investment in height growth, as well as greater photosynthetic capacity and adaptations to shading conditions. The functional traits studied indicated the occurrence of a great diversity of adaptations between species. Therefore, it is possible to say that both groups of species are important for maintaining these phytophysiognomies in the landscape.
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Yasir, Yasir, Nurjanah Nurjanah i Samsir Samsir. "Environmental Communication of Corporate Social Responsibility (CSR) in Fire Disaster Mitigation on Peatlands". Anuário do Instituto de Geociências 46 (10.03.2023). http://dx.doi.org/10.11137/1982-3908_2023_46_49559.
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Mitigation of forest and land fires is very important to implement in peatlands. This paper aims to explain the role of Pertamina’s CSR communication in mitigating peatland fires around the company’s operational areas. This research used qualitative methods with case studies. The results showed that Pertamina’s CSR communication contributed to increasing awareness of fire disaster mitigation and changing people’s behavior in utilizing peatlands through the “Kampung Gambut Berdikari” program. In addition, the community was also trained and provided with fire extinguishers to prevent fires on peatlands. CSR implementers establish friendly relations and foster the Tunas Makmur farmer group and the Fire Concern Community (Masyarakat Peduli Api/MPA) group to prevent fires. CSR communication is able to increase the awareness of the surrounding community in managing the peat environment. CSR together with the community develops peat arboretum ecotourism and pineapple plantations for environmental education and improving people’s welfare. This peat arboretum ecotourism is not only a medium of communication to spread educational messages to the farmer community, but also to school students, youth and visitors. In the future, CSR program actors can implement environmental communication as a form of disaster mitigation to prevent forest and peatland fires.
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Sitanggang, Evlin, Togar Fernando Manurung i Slamet Rifanjani. "IDENTIFIKASI MODEL ARSITEKTUR JENIS POHON FAMILI LAURACEAE DI KAWASAN ARBORETUM SYLVA UNIVERSITAS TANUNGPURA PONTIANAK". JURNAL HUTAN LESTARI 7, nr 3 (11.11.2019). http://dx.doi.org/10.26418/jhl.v7i3.37505.
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The tree architecture model is one of the important morphological features of the plants in characterizing each tree. Trees are plants with woody stems, deep roots, and have branches far from the ground and are more than 3 meters high (Hakim and Utomo 2003). trees are also one of the soft elements (softcape) that are very often used in the development of a site or landscape with a variety of unique characteristics. One of the unique characteristics of a tree is the dominant form of tree architecture formed by its canopy. This research was carried out at the Sylva Arboretum in Tanjungpura Pontianak for 3 weeks starting from July 4 2018 to July 24 2018 to observe and identify the architectural model of the lauraceae family tree. The research objective was to determine the architectural model of the Lauraceae family tree in Sylva Arboretum in Tanjungpura University Pontianak. The research method used is the exploration method, which is done by roaming, which means that observations can be made with visual and physical contact. Based on the results of the research and discussion, lauraceae family tree architecture models found in the Arboretum Sylva Area of Tanjungpura University Pontianak as many as four architectural models namely Rauh, Roux, Petit and Scarrone. The four architectural models were found in six species of trees, namely Ulin (Eusideroxylon zwageri), Medang sahung (Achiodaphne glabra), Medang pasir (Litsea eliptica), Medang bubur (Litsea resinosa), Medang sisik (Dehaasia firma), and Kayu manis (Cinnamomum iners).Keyword: Family of Lauraceae, Model of Tree Architecture, Sylva Arboretum
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Yasir. "Environmental Communication through Corporate Social Responsibility in Overcoming Peatland Fire Problems". International Journal of Social Science and Business 7, nr 1 (13.12.2022). http://dx.doi.org/10.23887/ijssb.v7i1.50878.
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Corporate communications should be integrated with environmental conservation campaigns. This research aims to explore the role of Pertamina's CSR in overcoming environmental problems related to peatland fires in Bukit Batu District, Bengkalis Regency. The researcher used a qualitative method with a case study approach. The subjects of this research are Pertamina's CSR practitioners and the community. The results show that Pertamina's CSR contributes in campaigning for environmental sustainability and preventing forest fires through the program of "Kampung Gambut Berdikari". CSR communication is carried out on a group basis, namely the Tunas Makmur Farmers Group and the Fire Care Community (MPA) forum to tackle and prevent fires on peatlands. These CSR activities increases environmental awareness and improves the economic welfare of the community. The activities are based on the development of peat arboretum ecotourism and the development of pineapple plantations. This peat arboretum ecotourism becomes an important communication medium to educate the farming community, school students, youth and also visitors. CSR activities should not only be oriented towards corporate image, but its success can be imitated, transmitted and developed in other areas prone to fire disasters.
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Klosterwill, Kevan. "A Floral Nation: Warren H. Manning, Civic Horticulture, and the Didactic Cityscape". Journal of Planning History, 29.04.2022, 153851322110677. http://dx.doi.org/10.1177/15385132211067713.
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Warren H. Manning developed a distinctive approach to civic horticulture that recurred throughout his career as a city planner, calling for educational plantings beyond limited educational gardens to encompass streets, neighborhoods, school and college campuses, and entire park systems. These plantings, supported by printed media, were resources for citizens to educate themselves, improve their own home grounds, and in turn participate in the improvement of the community’s civic landscape as a whole. Manning’s approach brought together village improvement, amateur naturalist societies, schoolyard gardening, and his own experience designing arboreta with the Olmsted firm.
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Varner, J. Morgan, Jeffrey M. Kane, Jesse K. Kreye i Timothy M. Shearman. "Litter Flammability of 50 Southeastern North American Tree Species: Evidence for Mesophication Gradients Across Multiple Ecosystems". Frontiers in Forests and Global Change 4 (12.10.2021). http://dx.doi.org/10.3389/ffgc.2021.727042.
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Widespread fire exclusion and land-use activities across many southeastern United States forested ecosystems have resulted in altered species composition and structure. These changes in composition and structure have been implicated in positive fire-vegetation feedbacks termed “mesophication” where fire spread and intensity are diminished. In forests and woodlands, inherent flammability of different species is the mechanistic driver of mesophication. To date, there has been limited work on documenting the high diversity of flammability among species in the region, limiting the ability to differentiate among species to restore fuels that sustain fire regimes. Here, we coalesce disparate flammability data and add missing species across the spectrum from species that facilitate fire (so called “pyrophytes”) to those that dampen fire (so called “mesophytes”). We present data on 50 important tree species from across the southeast, all burned using identical laboratory methods. We divide our results for four dominant ecosystems: Coastal Plain uplands, oak-hickory woodlands, Appalachian forests, and bottomland forests. Across ecosystems, the most flammable species were American chestnut (Castanea dentata), a suite of pines (Pinus palustris, P. elliottii, P. serotina, and P. rigida), several oaks (Q. laevis, Q. falcata, Q. margaretta, and Q. alba), and sourwood (Oxydendrum arboreum). At the mesophytic end, the least flammable species were Tsuga canadensis, Acer rubrum, and several other hardwoods previously implicated in mesophication. Each of the four ecosystems we studied contained species that spanned the pyrophytic to mesophytic gradient. These data fill in some key holes in our understanding of southeastern fire adaptations, but also provide context for restoration decisions and fire management prioritization efforts to restore and sustain fire-prone ecosystems of the region.