Rates of Chlorimuron Applied in Glyphosate-Tolerant and Sulfonylurea-Tolerant Soybean
Nenhuma Miniatura disponível
Data
2018-09-01
Autores
Albrecht, Leandro Paiola
Albrecht, Alfredo Junior Paiola
Silva, André Felipe Moreira
Krenchinski, Fábio Henrique [UNESP]
Placido, Henrique Fabrício
Filho, Ricardo Victoria
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
Susceptibility to chlorimuron varies according to soybean genotype. STS® (sulfonylurea-tolerant soybean) presents a high tolerance to some sulfonylureas; this feature is determined by semi-dominants alleles, Als1 and Als2. Experiments were conducted in the field for four seasons with two cultivars for season to evaluate the selectivity of chlorimuron rates in post-emergency (V4) of glyphosate-tolerant and sulfonylurea-tolerant soybean. Data analysis made it possible to infer that there was no significant effect on the productivity of the cultivars when they received application in post-emergency, of chlorimuron at the doses used (0, 15, 30, 45, 60, 75, and 90 g ai ha-1). The maximum recommended rate for non-STS cultivars of chlorimuron is 20 g ai ha-1, or 4.5 times less than the maximum rate employed in this study. The soybean cultivars CD 250 RR/STS, CD 236 RR/STS, CD 2630 RR/STS, and BMX Turbo RR/STS were tolerant to the application, in post-emergency (V4) of the herbicide chlorimuron, until the rate of 90 g ai ha-1.
Descrição
Palavras-chave
agronomic performance, ALS inhibitors, Glycine max (L.) Merr, Herbicide-tolerant crops, selectivity
Como citar
Journal of Crop Science and Biotechnology, v. 21, n. 3, p. 211-216, 2018.