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There were few reports mentioned changes of protective enzyme activities of Tetranychus viennensis after exposed to pesticides by now. Our previous study had showed that the chloroform extracts of Kochia scoparia had effective acaricidal activity against T. viennensis. Here, the toxicosis symptoms of T. viennensis were detaiedly studied after exposed to the chloroform extracts of K. scoparia KFCE-2...
Various extracts of Wikstroemia chamaedaphne were evaluated their acaricidal activities against Tetranychus cinnabarinus (Boisduval) and Tetranychus urticae Koch (Acari: Tetranychidae) in laboratory. According to our study, the Wikstroemia chamaedaphne extracts had significant acaricidal activities against T. cinnabarinus and T. urticae. In this study, the mean LC50 value for T. cinnabarinus and T...
Few studies reported the antifeedant activity of Stellera chamejasme extracts against larvae of Plutella xylostella. Here, laboratory choice and no-choice test feeding studies were conducted to assess the antifeedant activity of methanol extracts of S. chamejasme against larvae of P. xylostella. S. chamejasme Extracts caused severe feeding deterrence by 2nd or 3rd instars larvae of P. xylostella in...
The communities and diversity of the beneficial insects on jujube trees were studied in jujube sites intercropped with pasture in Taigu, Shanxi province of China. The results showed that 8 orders, 25 families, 64 species and 5112.33plusmn30.65 individuals of insect natural enemies were found in the jujube sites intercropped with pasture site, while the corresponding numbers were 8, 35, and 3126.33plusmn23...
Methyl palmitate, a kind of fatty acid methyl ester, has been found in many plants. Many biological functions of methyl palmitate have been found. Recently we isolated the methyl palmitate from the green walnuts husks and found it has acaricidal activity that had not been reported before. Here, the acaricidal activity of methyl palmitate, industrial methyl palmitate and the mixtures of methyl palmitate...
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