Data/hora: 21/06/2024 00:34:21

Biblioteca(s): 	Embrapa Mandioca e Fruticultura.	
Data corrente: 	02/05/1994	
Data da última atualização: 	02/05/1994	
Autoria: 	ANDERSON. R. L.	
Título: 	Jointed goatgrass (Aegilops cylindrica) ecology and interference in winter wheat.	
Ano de publicação: 	1993	
Fonte/Imprenta: 	Weed science, v.41, p. 388-393, 1993.	
Páginas: 	p. 338-393. 	
Idioma: 	Inglês	
Conteúdo: 	Jointed goatgrass is a serious weed in winter wheat, and presently no herbicides are available for its selective control. This study examined the effect of time of emergence and removal on jointed goatgrass interference in winter wheat, as well as its rate of development and soil water extraction. The goal of this study was to suggest cultural practices that minimize jointed goatgrass interference in winter wheat. Jointed goatgrass development was identical to 'Vona" winter wheat in two crop seasons, even though precipitation differed drastically between seasons. Depth of soil water extraction of both species was also similar. Jointed goatgrass at 18 plants m-2 reduced grain yield 27 and 17% when emerging 0 and 42 d after Vona, respectively. The relationship between time of jointed goatgrass emergence after winter wheat and grain yield loss was Y = 30.6 - 0.29X (X + days, r = 0.72), indicating that plants emerging in lata fall still caused yield loss. Removing jointed goatgrass by early March prevented winter wheat grain yield loss.	
Palavras-Chave: 	Planta daninha.	
Thesagro: 	Genética; Genoma.	
Thesaurus Nal: 	pellets.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Mandioca e Fruticultura (CNPMF)	
Exemplares: 	CNPMF - (15476-1) - ADC - SP - -- - S2814 -  - S2814 - DIS