Effects of Adjuvants on the Efficacy of the Insecticide (Spinetoram 120 SC) Against Strepsicrates semicanella in Eucalyptus Plantation
Proceedings of the National Academy of Sciences, India Section B: Biological Sciences(2024)
摘要
Spinetoram 120 SC is an insecticide used against the leafroller, S trepsicrates semicanella (Lepidoptera: Torticidae), in Eucalyptus plantations. Control efficacy in plantations is a difficult issue due in large part to weather. Adjuvants are added to reduce insecticide runoff from the leaf surface. Three adjuvants such as alkyl aryl polyglycol ether 400 g/L (Agristick), mixture of fatty alkyl sulphate and fatty alkyl betaine (CBA Stick 100), and condensate nonylphenolethylene oxide 95 g/L and polyvinyl alcohol 19 g/L (Indostick 100/20 SL) were tested with the insecticide spinetoram 120 SC against S. semicanella . Adjuvant treatments significantly increased the efficacy of spinetoram 120 SC in controlling S. semicanella . The CBA Stick with 3 and 2 ml L −1 reduced S. semicanella incidence best compared to the other treatments at 7 DAT (days after treatment) and 14 DAT. A rain simulation (10 mm) conducted at 30-min intervals after spraying was sufficient to show deterioration in insecticide efficacy. Spinetoram at a dosage of 0.5 ml L −1 with the adjuvant CBA Stick at a dosage of 3 ml L −1 was recorded as the best treatment for S. semicanella at 14 DAT in a simulated rain of 10 mm.
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关键词
Pest,Leafroller,Control,Rain,Plantation
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