Results 141 to 150 of about 4,218 (185)
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Leafroll control by use of insecticides
American Potato Journal, 1953In 1951 and 1952, tests were conducted near Ithaca, New York, on the effect of insecticidal applications on the amount and pattern of spread of potato leafroll virus from known sources of inoculum. Systox was very effective in reducing disease incidence, parathion reduced virus spread almost as well, and DDT appeared most helpful where the amount of ...
K. H. Fernow, S. H. Kerr
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Leafroller Control Programs, 1984
Insecticide and Acaricide Tests, 1985Abstract Three insecticides were evaluated for control of leafrollers near Hollister, CA on 15-year-old Bleinheim apricot trees. Individual tree plots were replicated 10 times in randomized complete block design. One unsprayed buffer tree surrounded each replicate.
C. Pickel, R. Van Steenwyk, W. W. Coates
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Purification and electron microscopy of potato leafroll virus
Virology, 1969A procedure for purification of potato leafroll virus (PLRV) from its plant host was improved. An extract from diseased Physalis floridana plants was emulsified with an n-butanol-chloroform mixture. The virus in the aqueous phase was concentrated by centrifugation, the pellet was resuspended in 0.01 M phosphate buffer and subjected to emulsification ...
M, Kojima +3 more
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Sex pheromone catabolism in the redbanded leafroller moth
Journal of Chemical Ecology, 1993Tritium-labeled components of the red-banded leaf-roller female sex pheromone, (Z)- and (E)-[11,12-(3)H2]-11-tetradecenyl acetate (57 Ci/mmol), applied to antennae of males and females were degraded causing formation of tritiated 11-tetradecenol, 11-tetradecenoic acid, and water.
J A, Klun, M, Schwarz
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Leafroll of potatoes as a storage problem
American Potato Journal, 1953The percentage of infection of potato tubers in storage was shown to be directly correlated with the density of aphid population feeding under storage conditions. An increase in the number of aphids was followed by an increase in the percentage of infection of tubers.
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Grapevine leafroll-associated viruses (leafroll disease)
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Characterization of potato leafroll virus
2010Potato leafroll virus (PLRV) was purified from infected potato (Splanum tuberosum L.) by using a mixture of chloroform and butanol for clarification and polyethylene glycol for concentration. The virus sedimented as a single band in a sucrose density gradient. Yield of purified virus varied from 0.4-0.6 mg/kg fresh weight of potato foliage. Virus yield
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Choristoneura occidentalis (lemon leafroller)
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