Data/hora: 09/06/2024 02:46:44

Provedor de dados: 	Planta Daninha	
País: 	Brazil	
Título: 	Wheat Yield Loss in a Two Species Competition with Emex australis and Emex spinosa	
Autores: 	JAVAID,M.M.; TANVEER,A.; ALI,H.H.; SHAHID,M.A.; BALAL,R.M.; AQEEL,M.A.	
Data: 	2016-03-01	
Ano: 	2016	
Palavras-chave: 	Triticum aestivum; Yield loss; Weed competition; Emex australis; Emex spinosa.	
Resumo: 	Emex australis and E. spinosa are significant weed species in wheat and other crops. Information on the extent of competition of the Emex species will be helpful to access yield losses in wheat. Field experiments were conducted to quantify the interference of tested weed densities each as single or mixture of both at 1:1 on their growth and yield, wheat yield components and wheat grain yield losses in two consecutive years. Dry weight of both weed species increased from 3-6 g m-2 with every additional plant of weed, whereas seed number and weight per plant decreased with increasing density of either weed. Both weed species caused considerable decrease in yield components like spike bearing tillers, number of grains per spike, 1000-grain weight of wheat with increasing density population of the weeds. Based on non-linear hyperbolic regression model equation, maximum yield loss at asymptotic weed density was estimated to be 44 and 62% with E. australis, 56 and 70% with E. spinosa and 63 and 72% with mixture of both species at 1:1 during both year of study, respectively. It was concluded that E. spinosa has more competition effects on wheat crop as compared to E. australis.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100035	
Editor: 	Sociedade Brasileira da Ciência das Plantas Daninhas	
Relação: 	10.1590/S0100-83582016340100004	
Formato: 	text/html	
Fonte: 	Planta Daninha  v.34 n.1 2016	
Fonte: 	info:eu-repo/semantics/openAccess