Influence of rainfall on diquat efficiency in controlling Salvinia auriculata, Pistia stratiotes and Eichhornia crassipes

Planta Daninha

Campos, C.F¹  Pereira, M.R.R¹  Martins, D¹  Universidade Estadual Paulista Júlio de Mesquita Filho, Botucatu¹  UNESP¹  Souza, G.S.F¹ 

关键词: aquatic weed;    water hyacinth;    water lettuce;    herbicide.;   

DOI  :  10.1590/S0100-83582011000400023

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 】

The aim of this study was to evaluate the influence of rainfall events at different time periods after application of diquat on the efficiency of this herbicide in controlling Salvinia auriculata, Pistia stratiotes and Eichhornia crassipes. Simulation of 10 mm rainfall applied during 5 min was studied at different time periods (0h, 0.25h, 0.5h, 1h, 2h, 4h, 6h, 12h and no rain simulation) after application of diquat in Reward formulation, 600 g a.i. ha-1 (2.5Lcp ha-1). The experiment was arranged in a completely randomized design with four replications. Plants were evaluated at 3, 5, 7, and 12 days after application (DAA), and the results submitted to analysis of variance by the F test and the treatment means compared by the Tukey test (p < 0.05). Diquat provided excellent control of all the species studied, regardless of the time period for rain occurrence after application, even when immediately after application.

【 授权许可】

Unknown