Azafenidin: a new herbicide for weed control in Eucalyptus camaldulensis

Planta Daninha

Constantin, J.¹  Maciel, C.D.G.¹  UEM¹  Universidade Estadual de Maringá, Maringá¹  Oliveira Jr., R.S.¹ 

关键词: selectivity;    chemical control;    oxyfluorfen.;   

DOI  :  10.1590/S0100-83582000000300003

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 】

A field experiment was conducted at Presidente Castelo Branco, PR, Brazil, to evaluate the selectivity of the herbicide azafenidin to the crop Eucalyptus camaldulensis, as well as its efficacy to control some infesting weeds in this crop. Azafenidin was applied under pre-emergence conditions, at rates of 300, 400, 500, 600 and 800 g a.i. ha-1. Additional treatments, including oxyfluorfen (720 g a.i. ha-1), a weed free and a weeded check plots were also included. Both azafenidin and oxyflluorfen caused crop symptoms of phytotoxicity, with injuries being more intense for azafenidin at rates ³ 600 g a.i. ha-1. For weed control, rates of azafenidin at 500 g a.i. ha-1 or higher were effective in controlling Brachiaria decumbens, Commelina benghalensis, Richardia brasiliensis and Sida santaremnensis, even at 180 days after application. Lower rates of azafenidin provided enough control of most weeds, but with shorter residual effect.

【 授权许可】

Unknown