Data/hora: 16/06/2024 11:07:07

Provedor de dados: 	87	
País: 	Brazil	
Título: 	Selectivity and Effectiveness of Herbicides in the Grain Sorghum Crop	
Autores: 	PIMENTEL,G.V.; GUIMARÃES,D.F.; MOREIRA,S.G.; ÁVILA,M.O.T.; MARTINS,I.A.; BRUZI,A.T.	
Data: 	2019-01-01	
Ano: 	2019	
Palavras-chave: 	Sorghum bicolor; Phytotoxicity; Chemical control; Weed management; Productivity.	
Resumo: 	ABSTRACT: Over the years, cultivated areas of sorghum have expanded considerably in Brazil. Chemical weed control has become an obstacle due to the scarcity of herbicides registered for the crop. The aim of this study was to evaluate the efficiency of weed control and selectivity of herbicides applied in pre and post emergence in the crop. Two experiments were conducted. In one of them, the hybrid BRS 310 was used while DKB 550 was used in the other. The experiments were performed in the field in randomized block design, evaluating seven treatments with four replications. The used treatments were: 1. Hand weeding, 2. S-metolachlor (1,440 g a.i. ha-1), 3. S-metolachlor (1,440 g a.i. ha-1) + atrazine (2,000 g a.i. ha-1), 4. atrazine (2,000 g a.i. ha-1), 5. atrazine (3,000 g a.i. ha-1), 6. atrazine (2,000 g a.i. ha-1) + mineral oil (0.25%), and 7. atrazine (2,000 g a.i. ha-1) + mineral oil (0.5%). It was verified that post-emergence atrazine was efficient in the weed control and selective to the sorghum crop, not affecting productivity, except in mixture with mineral oil (0.5%). S-metolachlor cannot be recommended in pre-emergence for the tested cultivars because it is not selective, reducing plants and productivity.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100264	
Editor: 	Sociedade Brasileira da Ciência das Plantas Daninhas	
Relação: 	10.1590/s0100-83582019370100069	
Formato: 	text/html	
Fonte: 	Planta Daninha  v.37 2019	
Fonte: 	info:eu-repo/semantics/openAccess