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Showing 1 to 20 of 33 for “"apple orchards"”.
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Precision horticulture: application on apple orchards
… horticulture and spatial analysis applied to orchards are a growing and evolving part of precision agriculture technology. The aim of this discipline is to reduce production costs by monitoring and analysing orchard-derived information to improve crop performance in an environmentally sound …
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Activity and diet of bats in apple orchards of southern Michigan
<p>I studied activity and diet of bats in apple orchards in southern Michigan. There was no difference between organic and conventional orchards in number and composition of insects captured with light traps, number of bats captured with mist nets, or number of acoustic files of bat activity that …
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Leptothrips mali (Fitch): a potentially important predator in Virginia apple orchards
… Dysaphis plantaginea spp.) in Virginia apple orchards and predators (Leptothrips mali, Haplothrips subtilissimus, Orius insidiosus, Stethorus punctum, Dereacoris nebulosus, Chrysopa spp.) were monitored during 1977-78 under 3 reduced pesticide programs. The pesticide program with …
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Bionomics of the anthocorid, Orius insidiosus (Say) in Virginia apple orchards
… is a common polyphagous predator in Virginia apple orchards, particularly in orchards under reduced pesticide programs. The purpose of this research was to contribute to the basic knowledge of the biology and ecology of O. insidiosus in Virginia orchards and to evaluate the potential for its …
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Economic feasibility of using weather-altering technology on apple orchards in Virginia
Apple producers in Virginia are affected by adverse weather factors which cause poor or lower than normal yields. These weather factors such as freeze kill of bloom and lack of rainfall cause decreases in production and, therefore, decreases in revenues received by apple producers. These weather …
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Mating disruption in apple orchards: dispenser release rates, generic blends and community impact
… role in determining taxa and species present in orchards.
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Apple orchards feed and contaminate bees during, but even more so after bloom
… impacting their health. Many crops like apples, peaches, and cherries that add diversity and nutrition to our diet are wholly or partially dependent upon the pollination services of insects. Orchard crops are self-incompatible and commonly regarded as crops reliant on the pollination …
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Bioenergetics and nutrition of the pine vole (microtus pinetorum) in two Virginia apple orchards
… by voles from the maintained and abandoned apple orchard. The highest digestibilities coincided with the maturation of the apple crop. The quantity of primary production available during the winter was lowest of all seasons. It was estimated that the amount of primary production available to …
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The influence of an umbelliferous understory on the parasites of organic apple orchards in Canterbury
… L.) ground cover on the parasites of organic apple orchards was examined. The indirect influences on the major pest species, codling moth (Cydia pomonella L.) and lightbrown apple moth (Epiphyas postvittana (Walker)) were also investigated. Sampling was carried out in the Lincoln University …
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Bionomics of Platynota flavedana Clemens and P. idaeusalis (Walker)(Lepidoptera: Tortricidae) in Virginia apple orchards
The effects of pheromone trap placement on male moth catches of both species were studied. For P. flavedana, traps hung at 2.1 and 3.0 meters captured the greatest number of moths. Trap heights of 1.2, 2.1, and 3.0 meters caught the greatest number of P. idaeusalis moths. The outside-the-canopy …
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Impact of Low-Spray Mating Disruption Programs on Aphidophagous Insect Populations in Virginia Apple Orchards
… conventional programs were surveyed in Virginia apple orchards. Two sampling methods were utilized;aphid colony collection and beating tray collection. The low-spray blocks employed the use of mating disruption for control of the key direct pests, codling moth, Cydia pomonella (Linnaeus), and …
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Historical Use of Lead Arsenate and Survey of Soil Residues in Former Apple Orchards in Virginia
… Lead arsenate (PbHAsO4) was first used in apple orchards in the late 1890's to combat the codling moth, Cydia pomonella (Linnaeus). The affordable and persistent pesticide was applied in ever increasing amounts for the next half century. The persistence in the environment in addition to the …
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PREDICTING POTENTIAL ASCOSPORE DOSE OF VENTURIA INAEQUALIS (CKE) WINT IN COMMERCIAL APPLE ORCHARDS OF NEW HAMPSHIRE (MODELING, EPIDEMIOLOGY, DISEASE MANAGEMENT)
… orchard floor per season (PAD) in New Hampshire apple orchards. PAD was calculated as the product of scab lesions per m('2) leaf tissue at leaf fall, pseudothecia per lesion, asci per pseudothecium, the proportion of the orchard floor covered by leaf litter at bud break, and ascospores per ascus. …
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Field Evaluation of Bacillus Thuringiensis (Berliner) as a Microbial Insecticide for Use in Insect Control Practices in Illinois Apple Orchards
Made available in DSpace on 2014-12-05T21:34:07Z (GMT). No. of bitstreams: 1 6402926.pdf: 3331584 bytes, checksum: b504406afc4742cdb47ed446646c875f (MD5) Previous issue date: 1963
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Status of streptomycin-resistant Erwinia amylovora in Illinois apple orchards and evaluation of alternative compounds to manage fire blight disease
Illinois apple growers produce approximately 17,963 metric tons of apples annually. Fire blight disease, caused by the bacterium Erwinia amylovora, is a serious threat to apple production in Illinois and other Midwestern states. Streptomycin has been the most effective chemical for control of fire …
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The influence of pheromone dispenser release rates, trap height and pheromone dispenser height on captures of leafrollers in Virginia apple orchards
… codling moth for the entire season in Virginia apple orchards. Ecogen and Hercon leafroller dispensers lasted for a shorter time than the codling moth dispensers and would require two applications per season to provide the best control of their target pests. In a commercial northern Virginia …
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Relationship of the apple aphis and other insects to the dissemination of fire blight in apple orchards, with a view to methods of blight control
… the biting or sucking insects which inhabit the apple tree, may spread the organism to the succulent tissue, causing twig blight, fruit blight, leaf blight, or body blight. It is a fact that the insect, which in one section of the country is most troublesome in disseminating blight-bacillus, may …
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A study of trunk injuries and diseases of apple trees
… to the prevalence of canker diseases in Missouri apple orchards, and the untold damage which they are causing, the growers are asking for information that will enable them to combat these diseases successfully. It was with the idea of obtaining additional information concerning these diseases, …
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Development of POMME, the pest and orchard management expert system
… of an expert system to help farmers manage apple orchards is reported. The system provides advice regarding specific pest management, treatment of winter injuries, drought control and general pesticide selection. The knowledge structures employed in the construction of the system are …
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