Revista Brasileira De Herbicidas 2000; 1(1): 17-20
Efficacy of chlorimuron-ethyl in the control of Melampodium perfoliatum in soybean
DOI: 10.7824/rbh.v1i1.309
A new and important weed, Me/ampodium perfoliatum, has been growing in soybean plantations in the “Cerrados” of Minas Gerais, BraziI. The objective of this study was evaluate the biological activity and soybean tolerance to chorimuronethyl alone or tank rnixed with other postemergence herbicides. Treatrnents were: chlorimuron-ethyl (12.5 and 15 g/ha) + mineral oil (0.05% v/v), chlorimuron-ethyl + lactofen at 12.5+120 g/ha, chlorimuon-ethyl + fomesafen (12.5 + 150 gIha) + mineral oil (0.1% v/v) chlorimuron-ethyl + imazethapyr at 12.5 + 30 g/ha and a weedy and a weeded controI. Results indicate that chlorirnuronethy I (12.5 and 15 g/ha) + mineral oil has controlled efficiently (95 and 97%) M. perfoliatum. When chlorimuron-ethyl was rnixed with lactofen, and imazethapyr control increased to 96-99% up 132 days after application. Chlrimuron-ethyl alone or tank mixed with lactofen, fomesafen and imazethapyr has shown to be highly selective to soybean.
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