نتایج جستجو برای: cotton aphid
تعداد نتایج: 26560 فیلتر نتایج به سال:
Abstract Background Aphidophagous syrphid, Ischiodon scutellaris (Fabricius) (Diptera: Syrphidae) is an effective predator of aphids that infest many agricultural and horticultural crops. Cowpea aphid, Aphis craccivora Koch (Hemiptera: Aphididae), the natural host for culturing syrphid predator, I. . The present study was conducted to evaluate feeding development on seven species aphid hosts vi...
The efficiency of singular and joint usage of third larval instars of ladybeetle, Hippodamia variegata (Goeze) and green lacewing, Chrysoperla carnea (Steph.) was studied against cotton aphid, Aphis gossypii Glover on cucumber plants in greenhouse. The predator-prey ratio of 1:30 reduced the population of pest significantly. Singular and joint usage of predators, however, was not significantly ...
cotton aphid, aphis frangulae gossypii glover, is a major pest of cucumber in iran. one of the important parasitoids playing role in population control of this pest in the fields and greenhouses is lysiphlebus fabarum marshall. in this study, we investigated sensitivity of different instars of cotton aphids and pupal stage of l. fabarum to field recommended and half-recommended concentration of...
To assess biological control as a management tool for the cotton aphid, Aphis gossypii Glover (Homoptera: Aphididae), the efficacy of Aphidius colemani Viereck (Hymenoptera: Braconidae) for suppression of A. gossypii in greenhouse-grown chrysanthemums, Dendranthema grandiflora (Tzvelev), was compared with a pesticide standard, imidacloprid (Marathon 1% G) and an untreated check. No significant ...
This is the first study to research management strategies for cotton leafroll dwarf virus (CLRDV) in southeastern U.S. The efficacy of aphid vector reduce final CLRDV incidence was investigated concurrent with efforts monitor population dynamics and timing spread. Adjusting planting date insecticide applications did not CLRDV, which confirmed 60–100% plants per plot using RT-PCR. Aphid density ...
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