Academic literature on the topic 'Arboretum (Firm)'
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Journal articles on the topic "Arboretum (Firm)"
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Kempler, Chaim, and J. T. Kabaluk. "Fruiting and Ripening Characteristics of Actinidia arguta Hardy Kiwi." HortScience 30, no. 4 (July 1995): 807F—808. http://dx.doi.org/10.21273/hortsci.30.4.807f.
Full textAbstract:
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, and J. T. Kabaluk. "Fruiting and Ripening Characteristics of Actinidia arguta Hardy Kiwi." HortScience 30, no. 4 (July 1995): 807F—808. http://dx.doi.org/10.21273/hortsci.30.4.807.
Full textAbstract:
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, no. 1 (February 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, and 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, no. 1 (November 30, 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, et al. "Towards Spatially Explicit Quantification of Pre- and Postfire Fuels and Fuel Consumption from Traditional and Point Cloud Measurements." Forest Science 66, no. 4 (January 22, 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, and Akira Mori. "Growth, developmental, and size structure responses in tadpole prey under increasing threat from gape-limited newts." Canadian Journal of Zoology 97, no. 12 (December 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, and James W. Olmstead. "Techniques for Increasing Machine Harvest Efficiency in Highbush Blueberry." HortTechnology 23, no. 4 (August 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, and 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, no. 2 (May 9, 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, and Samsir . "CSR PROGRAM PT PERTAMINA BASED ON COMMUNITY EMPOWERMENT IN PEAT ECOTOURISM DEVELOPMENT." Sosiohumaniora 23, no. 2 (July 5, 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, and Paul M. Lyrene. "Using Sparkleberry as a Genetic Source for Machine Harvest Traits for Southern Highbush Blueberry." HortTechnology 23, no. 4 (August 2013): 419–24. http://dx.doi.org/10.21273/horttech.23.4.419.
Full textAbstract:
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.
Books on the topic "Arboretum (Firm)"
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Cantrell, William G. Phellinus weirii root rot of Douglas fir in the Sehome hill Arboretum: Distribution, impact and management options. 1990.
Find full textBook chapters on the topic "Arboretum (Firm)"
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Ray, Robert B. "Vegetation." In The ABCs of Classic Hollywood, 135–37. Oxford University PressNew York, NY, 2008. http://dx.doi.org/10.1093/oso/9780195322910.003.0048.
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Abstract With its lush, suburban setting, The Philadelphia Story rejects screwball comedy’s typical New York world of art deco apartments and stream- lined skyscrapers. Instead, the Lord mansion appears in its establishing shot proudly surrounded by trees, lawns, and shrubbery. Inside, the house is a virtual arboretum, with plants sprouting from corners and flowers floating on every tabletop. As the film progresses, the vegetation becomes increasingly prominent. Indeed, after Mike and Tracy walk home from the library, through a park she casually identifies as “part of our place,” only three brief scenes will take place indoors: Mike’s nocturnal visit to Dexter, Dexter’s goodnight to Liz, and the final flurry of proposals that leads to the wedding in a room crammed with enormous bouquets. Significantly, no one is ever shown tending to anything; all the flora seem to operate on their own. In other words, the movie ignores physical labor while displaying its picturesque results, precisely the practice of studio filmmaking.
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Lorbiecki, Marybeth. "The Land Laboratories: 1933– 1936." In A Fierce Green Fire. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780199965038.003.0015.
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On June 26, 1933, the University of Wisconsin offered Aldo Leopold a position teaching the nation’s first graduate program in game management. The New York Times hailed it as the “one and only ‘wild-game chair.’” This was the chance he’d been waiting for. Despite the small salary, Leopold accepted. Letters of congratulation filled the mailbox at 2222 Van Hise. Among them was one from none other than the preservationist crusader W. T. Hornaday: …My Dear Ally, I salute the University of Wisconsin, for its foresight and enterprise in establishing the first Collegiate Professorship of Game Management created in the United States… . I congratulate the Wisconsin Alumni Foundation on its correct initiative in the choice of the Best Man for the new foundation… . It is all a helpful gesture in the struggle to save American game and sport from finally going over the precipice, A.D. 1940. …Leopold set up shop in “two small, rather dark rooms” in the basement of the university’s Soils Building. As an outsider to the academic establishment, he was expected to be more of a free-floating conservation resource for the state than a departmental teacher. He outlined some of his duties for the Milwaukee Journal: ...To conduct research in the life history of Wisconsin birds and mammals; develop cropping methods suitable for their preservation and increase; train men to devise and apply such methods; impart to other students a general understanding of the wild life conservation problem; assist farmers and other landowners in selecting and applying cropping methods; integrate game with other uses of land; and advise conservation officers on questions of wild life management and policy. …He was charged with giving radio talks and public addresses, overseeing soil erosion and game-cropping projects, and helping plan a university arboretum and wildlife refuge—all before the official teaching would begin. Since conservation was “a way of living on land” for Leopold, he wanted to involve as many people as possible.
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Lorbiecki, Marybeth. "Love and the Restoration of Ourselves." In A Fierce Green Fire. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780199965038.003.0030.
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A little girl in Raytown, Missouri, used to spend part of almost every day in a special place in the woods near her house. The place had a calming effect on her. “Sometimes I go there when I’m mad . . . and then, just with the peacefulness, I’m better. I can come back home happy, and my mom doesn’t even know why.” In his book Last Child in the Woods, Richard Louv recounts the end of this fifth grader’s story. “And then they just cut the woods down. It was like they cut down part of me.” I know this same feeling. When I was her age, I watched the prairiesavannah I loved to explore turned into a housing development, chasing away my friends, the meadowlarks. I watched my aging Irish poet friend, Ken Olsen, try to fight the city to save the little bit of woods next to his house from being turned into an apartment complex. The loss nearly gave him a heart attack … or it did give him one, just not one that could be seen. Another friend mourned for weeks after the city cut down the oak in front of her apartment complex that offered dappled green shade to her fourth-floor home. It’s grief, pure and simple. But with all grief, life goes on, sometimes even when we don’t want it to. And there’s hope in that. The land systems long to rejuvenate, just as we long to have them back. Leopold’s restoration work at the Shack and the Arboretum have expanded exponentially, into every ecosystem on land and even into ocean ecosystems, such as coral reefs, kelp beds, tidal communities, and oyster beds. Because so much damage has been done, this is one of the most vibrant, growing, and needed areas of the Leopold legacy. Steven Brower, a landscape architect and Leopold family historian from Burlington, often walks the woods, caves, and bottomlands where Aldo roamed as a child. Brower’s eyes penetrate the landscapes with a kind of x-ray vision, seeing what once was underneath what is today.
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Lorbiecki, Marybeth. "The Professor: 1937– 1939." In A Fierce Green Fire. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780199965038.003.0016.
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The windswept wastelands of the Dust Bowl made it clear to many Americans how fragile the human place in nature is. Suddenly, schools across the country wanted to teach conservation, erosion prevention, and wildlife management. Letters piled up on Leopold’s desk, asking his advice. Leopold replied with a list of resources, but his overriding message was that nature was the best teacher. At fifty-one, Leopold had seven graduate students and a full flock of undergraduates. With a blend of affection and awe, they called him “the Professor.” Marie McCabe, the wife of graduate student Robert McCabe, was quite surprised when she first met the Professor. “I had expected him to be a combination of Abe Lincoln and Thomas Jefferson. Here he was, extremely gracious, but of ordinary size and appearance, not at all handsome … showing no sign of being an author and absolute authority on everything.” Game Management 118 had become a campus favorite. Robert S. Ellarson, a Leopold wildlifer, recalled his first meeting: “The class had assembled before the Professor arrived. Soon the clicking of steel-cleated heels signalled his approach. When he arrived and stood before the class, I was impressed by the bold, virile, almost macho appearance of the man. And I was absolutely enthralled by the lecture that followed.” On Saturdays, the class traveled to the arboretum (which was slowly growing toward a natural state) or to various research plots. In the field, Leopold pointed out such elements as animal tracks and rubbings, scat, browsed plants, nests and burrows, gullies and runoff tracks, ground cover and foliage, and rock formations. Then he asked questions, pushing the students to put together the signs they had seen, to draw for themselves a recent and not-so-recent history of the plot of land: . . . Look at the trees in the yard and the soil in the field and tell us whether the original settler carved his farm out of prairie or woods. Did he eat prairie chicken or wild turkey for his Thanksgiving? What plants grew here originally which do not grow here now? Why did they disappear? What did the prairie plants have to do with creating the corn-yielding capacity of this soil? Why does this soil erode now but not then?. . .