Weed control in soybean crop using the herbicide acetochlor under direct seeding and conventional system

Planta Daninha

UFRGS, Porto Alegre¹  Vidal, R.A.¹  Ferri, M.V.W.¹ 

关键词: soybean;    adsorption;    biological degradation;    leaching;    persistence.;   

DOI  :  10.1590/S0100-83582002000200015

学科分类：农业科学（综合）

来源: Sociedade Brasileira da Ciencia das Plantas Daninhas (S B C P D) / Brazilian Society of Herb Science

【 摘 要 】

Soil management affects herbicide bioactivity and changes persistence, weed control and crop selectivity. An experiment was carried out at the Federal University of Rio Grande do Sul – Brazil, to evaluate the efficacy of the herbicide acetochlor in controling weeds in a Paleudult soil under direct seeding and conventional system. The following treatments were tested: acetochlor at 0, 1,680, 2,520, 3,360 and 4,200 g ha-1, applied under tillage and no-till systems. Assessments included crop injury at 14, 21 and 28 days after acetochlor aplication, weed dry matter at 40 and 60 days after herbicide aplication and weed control at 15, 30 and 45 days after acetochlor aplication. Acetochlor was more efficient under conventional than direct seeding system. Weed dry biomass was lower under conventional than direct seeding system. No soybean crop injury was observed.

【 授权许可】

Unknown