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Planta Daninha

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SOUZA, Itamar Ferreira de; REZENDE, Antônio Machado; BUENDIA, Júlio Pedro Laca  and  YOSHIURA, Milton. Grass weed control with herbicides in soybeans in Minas Gerais. Planta daninha [online]. 1985, vol.8, n.1-2, pp.1-13. ISSN 0100-8358.

Three field experiments were carried out on Dark Red Latosol and Yellow Red Latosol in 1981/82 and 1982/83 to evaluate the efficiency of herbicides upon grassy and their phytotoxicity upon “UFV-1” and Cristalina soybeans cultivars. The acetoanilide group and pendimethalin showed good epiderwort control. For the three broadleaved weed species, acetochlor, trifluralin and oryzalin were efficient. More over, metolachlor controlled Brazil pusley and A. ficoidea. For alexandergrass control all herbicides tested were efficient but quizalofop-ethyl and mefluidide, whereas crabgrass was not controlled by mefluidide only. Acetochlor and oryzalin treatments decreases initial stand. Besides, acetochlor decreased height of insertion of first pod. Quizalofop-ethil reduced grain yield of soybeans.

Keywords : acetoanilides; pendimethalin; acetochlor; trifluralin; oryzalin; metolachlor; Brazil pusley; A. ficoidea; alexandergrass; quizalofop-ethil; mefluidide; sethoxydin.

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