Adição de redutores de pH e doses de glyphosate na dessecação de plantas daninhas

Revista Brasileira de Herbicidas

Roberto Marins Guerreiro³  Rivanildo Dallacort¹  Roberto Akitoshi Komatsu³  Miriam Hiroko Inoue²  Cleverton Carneiro Santana¹  Diogo Carneiro Santana¹ 

[1] Departamento de Agronomia - UNEMAT;Universidade do Estado de Mato Grosso - UNEMAT;Faculdade Integrado de Campo Mourão

关键词: Adjuvantes;    doses reduzidas;    herbicida;    manejo;   

DOI  :  

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 】

Two experiments were conducted to evaluate the influence from the addition of pH reducers and rates of glyphosate in the spray mix to Euphorbia heterophylla and Glycine max control. The treatments were arranged in a factorial scheme (4 x 2) + 1, randomized blocks design and four replications. Each experiment used a pH reducer (pH Fós ou Redumax), four rates of reducer (0, 50, 75 and 100% of the rate recommended), two rates of glyphosate (450 and 900 g ha-1) and an untreated check. The weed control was evaluated at 4, 6, 8, 10, 12 and 14 days after application (DAA) of treatments, in visual scale from 0 to 100% of control. In both experiments, 450 g ha-1 glyphosate, the addition of reducers in the spray mix provided greater weed control in relation to only glyphosate. There was no difference in 50, 75 and 100% of the rate recommended of reducers. With the use of adjuvant has a satisfactory control with half the recommended rate of glyphosate at 14 DAA. These results demonstrate the possibility of reduced rates of glyphosate when used these adjuvants in the spray mix.

【 授权许可】

Unknown