Weed community composition in different agro-systems

Cardoso, Isabella Sichierski; Jakelaitis, Adriano; Soares, Michellia Pereira; Araújo, Vinícius Tavares de; Cabral, Paulo Henrique Ramos

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dc.creator	Cardoso, Isabella Sichierski
dc.creator	Jakelaitis, Adriano
dc.creator	Soares, Michellia Pereira
dc.creator	Araújo, Vinícius Tavares de
dc.creator	Cabral, Paulo Henrique Ramos
dc.date	2017-04-06
dc.date.accessioned	2022-03-21T20:07:51Z
dc.date.available	2022-03-21T20:07:51Z
dc.identifier	https://comunicatascientiae.com.br/comunicata/article/view/1451
dc.identifier	10.14295/cs.v8i1.1451
dc.identifier.uri	http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/77811
dc.description	Weed communities in agricultural systems are diverse and subjected to different agronomic practices. In this study, a phytosociological survey of the weed community in different cropping systems consisting of corn, horticulture, perennial cultivation of Jatropha curcas and pasture of Urochloa brizantha in Rio Verde, GO, Brazil, was carried out. Assessments were performed at the beginning (October 2011) and at the end (March 2012) of the rainy season. After identifying and counting species, were calculated the phytosociological indices of density, frequency, abundance and relative importance, as well as the diversity index of Shannon-Wiener, evenness index of Pielou and similarity coefficient of Sorense. Were found 46 species of sixteen families, especially Poaceae. The most important species were: Alternanthera tenella in the annual growth environment during the both periods; Panicum maximum (early rainy season) and Chamaescy hirta (end of the rainy season) in the vegetable garden; Eleusine indica (early rainy season) and Galinsoga parviflora (end of the rainy season) in the perennial crop and Sida rhombifolia (early rainy season) and Neonotonia wigrtii (end of the rainy season) in the pasture. Lower diversity indices and evenness were observed in the pasture environment. Sampling time presented a higher impact on similarities when compared to the different environments.	en-US
dc.description	Weed communities in agricultural systems are diverse and subjected to different agronomic practices. In this study, a phytosociological survey of the weed community in different cropping systems consisting of corn, horticulture, perennial cultivation of Jatropha curcas and pasture of Urochloa brizantha in Rio Verde, GO, Brazil, was carried out. Assessments were performed at the beginning (October 2011) and at the end (March 2012) of the rainy season. After identifying and counting species, were calculated the phytosociological indices of density, frequency, abundance and relative importance, as well as the diversity index of Shannon-Wiener, evenness index of Pielou and similarity coefficient of Sorense. Were found 46 species of sixteen families, especially Poaceae. The most important species were: Alternanthera tenella in the annual growth environment during the both periods; Panicum maximum (early rainy season) and Chamaescy hirta (end of the rainy season) in the vegetable garden; Eleusine indica (early rainy season) and Galinsoga parviflora (end of the rainy season) in the perennial crop and Sida rhombifolia (early rainy season) and Neonotonia wigrtii (end of the rainy season) in the pasture. Lower diversity indices and evenness were observed in the pasture environment. Sampling time presented a higher impact on similarities when compared to the different environments.	pt-BR
dc.format	application/pdf
dc.language	eng
dc.publisher	Federal University of Piauí	en-US
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/1451/454
dc.rights	Copyright (c) 2017 Isabella Sichierski Cardoso, Adriano Jakelaitis, Michellia Pereira Soares, Vinícius Tavares de Araújo, Paulo Henrique Ramos Cabral	en-US
dc.source	Comunicata Scientiae; Vol. 8 No. 1 (2017); 139-148	en-US
dc.source	Comunicata Scientiae; v. 8 n. 1 (2017); 139-148	pt-BR
dc.source	2177-5133
dc.source	2176-9079
dc.subject	Jatropha curcas	pt-BR
dc.subject	milho	pt-BR
dc.subject	pastagens	pt-BR
dc.subject	plantio direto.	pt-BR
dc.title	Weed community composition in different agro-systems	en-US
dc.title	Weed community composition in different agro-systems	pt-BR
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	Artigo Científico	pt-BR