Abstract
The effects of lambda-cyhalothrin on soybean pests and their natural enemies was investigated in 1990-91 in southern Brazil. Lambdacyhalothrin (3.75 g ai/ha) and a standard monocrotophos (120 g ai/ha) were applied to control the velvetbean caterpillar Anticarsia gemmatalis. Crop and ground dwelling arthropods, percentage parasitism and soybean leaf area index were monitored throughout the season and survivorship curves were constructed for Anticarsia.
Anticarsia populations were effectively controlled by both treatments. Following lambda-cyhalothrin applications, transient effects were observed on crop dwelling predators but not on ground dwelling arthropods or parasites. Following monocrotophos treatments, effects were observed on crop and ground dwelling predators but not on parasites. Typically, effects lasted 24 days and natural enemies recovered at the time of subsequent Anticarsia infestations, which did not reach economic threshold levels. There was no evidence for a reduction in the potential for natural control of subsequent infestations of Anticarsia or other late season pests.
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White, J., Brown, R., Bettencourt, A., Soares, C. (1992). The Effects of a Pyrethroid, Lambda-Cyhalothrin, on Natural Pest Connol on Brazilian Soybeans. In: Copping, L.G., Green, M.B., Rees, R.T. (eds) Pest Management in Soybean. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2870-4_11
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DOI: https://doi.org/10.1007/978-94-011-2870-4_11
Publisher Name: Springer, Dordrecht
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