نتایج جستجو برای: chrysoperla carnea
تعداد نتایج: 748 فیلتر نتایج به سال:
The recent invasion of southern California by the glassy-winged sharpshooter (GWSS), Homalodisca coagulata (Say) (Hemiptera: Cicadellidae), has triggered a statewide control eVort. Management of GWSS will include biological control using resident and imported natural enemies. Currently, very little information is available on the role of generalist predators in suppression of GWSS eggs, nymphs ...
—The recent discovery of herbivores that feed on Ni-hyperaccumulating plants and contain elevated Ni concentrations in their bodies suggests that Ni may be transferred to their predators. We tested this hypothesis using the high-Ni herbivore Melanotrichus boydi and four predator species: the spiders Pholcus phalangioides and Misumena vatia, the mantid Stagmomantis californica and the lacewing C...
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 ...
The invasive polyphagous cotton mealybug, Phenacoccus solenopsis Tinsley has emerged as a serious sucking pest of cotton. laboratory and field bioassays seven selected insecticides belonging to five toxicant groups were evaluated against P. their most abundant natural predators, Chrysoperla carnea (Steph.) Hyperaspis vinciguerrae Capra. Based on the toxicity index toxic group under conditions w...
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