Data/hora: 01/06/2024 18:30:10

Provedor de dados: 	Planta Daninha	
País: 	Brazil	
Título: 	Weeds infestation in corn intercropped with forages at different planting densities	
Autores: 	Concenço,G.; Ceccon,G.; Fonseca,I.C.; Leite,L.F.; Schwerz,F.; Correia,I.V.T.	
Data: 	2012-12-01	
Ano: 	2012	
Palavras-chave: 	Brachiaria; Weed proportion index; Winter crop; Mulching.	
Resumo: 	Corn is planted in the Center West region of Brazil as a second crop, following soybeans or beans. Intercropping of Brachiaria species with corn as a second crop increases the mulching in the cropping system. This study aimed to evaluate the weeds infestation in soybeans following corn/forages intercrop, as a function of corn plant structure, forage species and density. Experiments were conducted in a completely randomized blocks design with four replications, in Ponta Porã and Dourados municipalities, Mato Grosso do Sul state, Brazil, in 2010/2011. Treatments consisted of three corn hybrids with distinct plant architectures intercropped with three forage species: Brachiaria ruziziensis, B. brizantha and B.decumbens, at five densities, and the resulting dry mass was maintained throughout the winter. During the following cropping season, forages were desiccated prior to planting soybeans, and the dry mass of weeds, dry mass of the mulching, soil coverage by weeds, and the broadleaf/grass weed species index (WPI) were determined 15 days after soybean emergence, submitted to an F-test, and analyzed either by regression or by multiple mean comparison, according to the nature of the data. When intercropping corn with species of Brachiaria, a reduction in the overall weeds infestation may always be expected; among the studied forage species, more problems with weeds may be anticipated in areas with a less competitive species, e.g. B.ruziziensis. Under the conditions of the trials, B.brizantha and B.decumbens were more capable of inhibiting the emergence of weed species in the winter.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000400005	
Editor: 	Sociedade Brasileira da Ciência das Plantas Daninhas	
Relação: 	10.1590/S0100-83582012000400005	
Formato: 	text/html	
Fonte: 	Planta Daninha  v.30 n.4 2012	
Fonte: 	info:eu-repo/semantics/openAccess