Weed Colonization of Experimental Gaps in the Gaps in the Canopy of a Wheat Crop.

LEWIS, J. P.; LEGUIZAMON, E. S.

Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/105814

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DC Field	Value	Language
dc.contributor.author	LEWIS, J. P.	pt_BR
dc.contributor.author	LEGUIZAMON, E. S.	pt_BR
dc.date.accessioned	2011-04-09T12:19:32Z	-
dc.date.available	2011-04-09T12:19:32Z	-
dc.date.created	2001-09-26	pt_BR
dc.date.issued	1991	pt_BR
dc.identifier.citation	Pesquisa Agropecuaria Brasileira, Brasilia, v.26, n.6, p.807-820, jun.1991	pt_BR
dc.identifier.uri	http://www.alice.cnptia.embrapa.br/alice/handle/doc/105814	pt_BR
dc.description	Gaps of different sizes were opened in the canopy of a wheat crop by removing all above ground vegetafion in, August and October. Half of the gaps opened in. August were reopened in October. Composition of the weed community and abundance of individual species were measured in. September and in. November just before crop harvest. In September there were very litde differences between treatinents, and in November the most important differences were due to time of gap opening but not between gaps of different: sizes. Most weed species are synchronous with the crop and are well adapted to coexist with it, so there is a marked negative effect of late opening of gaps on most of them. Gaps have a positive effect on weeds asynchronous with the crop and perhaps on. rarities, Le. species which are neither constant nor abundant.	pt_BR
dc.language.iso	eng	eng
dc.rights	openAccess	eng
dc.subject	Disturbance	pt_BR
dc.subject	gaps	pt_BR
dc.subject	weed colonization	pt_BR
dc.subject	weed community	pt_BR
dc.subject	wheat crop	pt_BR
dc.title	Weed Colonization of Experimental Gaps in the Gaps in the Canopy of a Wheat Crop.	pt_BR
dc.type	Artigo de periódico	pt_BR
dc.date.updated	2011-04-10T11:11:11Z	pt_BR
riaa.ainfo.id	105814	pt_BR
riaa.ainfo.lastupdate	2004-09-08	pt_BR
Appears in Collections:	Artigo em periódico indexado / Embrapa Unidades Centrais (AI-SEDE)

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