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BACKGROUND
The cotton bollworm, Helicoverpa armigera (Hübner), and the beet armyworm, Spodoptera exigua (Hübner), are two major polyphagous lepidopteran pests of cultivated crops. They develop various levels of resistance to many frequently applied broad‐spectrum insecticides. Here, the larval susceptibilities of a laboratory population and six field‐collected populations per pest from Hunan Province,...
BACKGROUNDBenzophenone hydrazone derivatives are among the most important classes of synthetic insecticides. In an effort to discover new molecules with good insecticidal/acaricidal activities, a series of novel benzophenone hydrazone N‐acylated thiourea and urea derivatives was synthesized and bioassayed.
RESULTSAll of these compounds exhibited excellent bioactivities against T. cinnabarinus and...
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