Work

Interactions of Clethodim and Sethoxydim with Other Pesticides

Year: 2013

Type: article

Abstract: ABSTRACT A wide range of agrochemicals are applied in peanut to manage biotic and abiotic stresses. Experiments were conducted to evaluate the efficacy of clethodim and sethoxydim applied alone or with dimethenamid-P, pyraclostrobin, S-metolachlor, and 2,4-DB. When applied in combination with clethodim, pyraclostrobin often reduced goosegrass and large crabgrass control compared with clethodim only. Pyraclostrobin did not impact efficacy of sethoxydim in most instances. Dimethenamid-P and S-metolachlor did not negatively affect efficacy of clethodim and sethoxydim. The impact of 2,4-DB on efficacy of clethodim and sethoxydim was inconsistent. The magnitude of adverse impact on graminicides (clethodim and sethoxydim) performance did not exceed 19% and was caused primarily by pyraclostrobin. Conversely, increased efficacy of graminicides caused by chloroacetamide herbicides did not exceed 14%. Graminicides and chloroacetamide herbicides changed solution pH from slightly acidic to highly acidic. Several combinations of clethodim and sethoxydim produced temporary precipitates but no permanent precipitates. Results from these experiments suggest that applying tank mixtures containing up to four chemical components will not dramatically reduce control of emerged annual grasses in peanut.

Source: Peanut Science

DOI: 10.3146/ps11-19.1