Interference of Dayflower Species in Coffee Culture

Planta Daninha

Embrapa Semi-árido, Petrolina¹  Vieira, H.D.¹  Oliveira, A.R.¹  Universidade Estadual do Norte Fluminense Darcy Ribeiro¹  Freitas, S.P.¹ 

关键词: Commelinaceae;    chemical control;    Coffea arabica;    herbicide.;   

DOI  :  10.1590/S0100-83582009000400021

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 】

This work aimed to evaluate the effect of different herbicides/mixtures on the control of three dayflower species (Commelina benghalensis, C. erecta. and Tripogandra diuretica) and the tolerance of young coffee plants to the herbicides. The trial was arranged in a completely randomized design, constituted by ten different herbicides/mixtures and three dayflower species. Evaluations were carried out at 21 and 50 days after herbicide application (DAP), using visual analysis, following a control level scale. Coffee seedling tolerance to the herbicides (visual scale evaluation of phytotoxicity) and growth characteristics (diameter, number of leaves and height) of the coffee seedlings were evaluated. C. benghalensis was better controlled by diuron, 24-D + picloram, atrazine + metolachlor, metribuzin, glyphosate WG and acetochlor. C. erecta was controlled by diuron, 2,4-D + picloram, atrazine metolachlor, glyphosate SC and acetochlor. Diuron, 2,4-D + picloram, atrazine + metolachlor, metribuzin, glyphosate WG and paraquat diuron controlled T. diuretica the best. Metribuzin, diuron and acetochlor were more phytotoxic to the coffee crop. Diuron reduced dry matter weight and number of leaves of the coffee plant. Stem diameter and height were affected by the herbicides metribuzin and 2,4-D. Metribuzin caused the most damage to the growth characteristics of the coffee seedlings.

【 授权许可】

Unknown