Weed incidence and sowing time affect  soybean development

Schievenin, Luciano; Caron, Braulio Otomar; Elli, Elvis Felipe; Schwerz, Felipe; Rockenbach, Ana Paula; Orsolin da Silva, Diecson Ruy

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dc.creator	Schievenin, Luciano
dc.creator	Caron, Braulio Otomar
dc.creator	Elli, Elvis Felipe
dc.creator	Schwerz, Felipe
dc.creator	Rockenbach, Ana Paula
dc.creator	Orsolin da Silva, Diecson Ruy
dc.date	2018-08-01
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/1439
dc.identifier	10.14295/cs.v9i2.1439
dc.identifier.uri	http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/77808
dc.description	Despite the economic importance of the effects of weeds on the plastochron and emission of nodes of soybean plants, it has not been studied in detail. The aim of this study was to provide information about the effects of weeds on the development of soybean plants by determining the plastochron and number of nodes of soybean plants of different cultivars sown at different times in soils with presence and absence of weeds. A field study was conducted during the 2013/2014 crop season including a phytosociological survey to identify the occurring weeds, and the determination of the plastochron and final number of nodes of soybean plants. Four botanical families of weeds were found infesting the soybean crops. The plastochron and final number of nodes of soybean were influenced by the cultivar, sowing time, and presence of weeds. The plastochron was higher when the plants were grown in the presence weeds due to the higher relative frequency, relative density, relative abundance, and importance value index of the Euphorbia heterophyla, Ipomoea purpurea, and Urochloa plantaginea species, which resulted in a slower development of the soybean plants, and lower number of nodes per plant.	en-US
dc.description	Despite the economic importance of the effects of weeds on the plastochron and emission of nodes of soybean plants, it has not been studied in detail. The aim of this study was to provide information about the effects of weeds on the development of soybean plants by determining the plastochron and number of nodes of soybean plants of different cultivars sown at different times in soils with presence and absence of weeds. A field study was conducted during the 2013/2014 crop season including a phytosociological survey to identify the occurring weeds, and the determination of the plastochron and final number of nodes of soybean plants. Four botanical families of weeds were found infesting the soybean crops. The plastochron and final number of nodes of soybean were influenced by the cultivar, sowing time, and presence of weeds. The plastochron was higher when the plants were grown in the presence weeds due to the higher relative frequency, relative density, relative abundance, and importance value index of the Euphorbia heterophyla, Ipomoea purpurea, and Urochloa plantaginea species, which resulted in a slower development of the soybean plants, and lower number of nodes per plant.	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/1439/553
dc.rights	Copyright (c) 2018 Luciano Schievenin, Braulio Otomar Caron, Elvis Felipe Elli, Felipe Schwerz, Ana Paula Rockenbach, Diecson Ruy Orsolin da Silva	en-US
dc.source	Comunicata Scientiae; Vol. 9 No. 2 (2018); 242-251	en-US
dc.source	Comunicata Scientiae; v. 9 n. 2 (2018); 242-251	pt-BR
dc.source	2177-5133
dc.source	2176-9079
dc.subject	Glycine max	en-US
dc.subject	interspecific competition	en-US
dc.subject	phytosociological survey	en-US
dc.subject	plastochron	en-US
dc.subject	thermal sum	en-US
dc.subject	Glycine max	pt-BR
dc.subject	interspecific competition	pt-BR
dc.subject	phytosociological survey	pt-BR
dc.subject	plastochron	pt-BR
dc.subject	thermal sum	pt-BR
dc.title	Weed incidence and sowing time affect soybean development	en-US
dc.title	Weed incidence and sowing time affect soybean development	pt-BR
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	Artigo Científico	pt-BR