Interference of volunteer corn on soybean cultivars growth and yield

Caratti, Fernanda Cassiane; Lamego, Fabiane Pinto; Bianchi, Mario Antonio; Farias, Humberto; da Silva, Bruno Moncks; Cechin, Joanei

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dc.creator	Caratti, Fernanda Cassiane
dc.creator	Lamego, Fabiane Pinto
dc.creator	Bianchi, Mario Antonio
dc.creator	Farias, Humberto
dc.creator	da Silva, Bruno Moncks
dc.creator	Cechin, Joanei
dc.date	2019-01-04
dc.date.accessioned	2022-03-21T20:08:08Z
dc.date.available	2022-03-21T20:08:08Z
dc.identifier	https://comunicatascientiae.com.br/comunicata/article/view/1961
dc.identifier	10.14295/cs.v9i4.1961
dc.identifier.uri	http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/77875
dc.description	Spontaneous corn plants in soybean crop are considered weeds because they compete for the same environmental resources. The objective of this study was to evaluate the competitive ability of soybean cultivars when in coexistence with spontaneous corn plants. A field experiment was conducted in CCGLTEC, Cruz Alta/RS, in 2014/15, in a split-plot design, with the main plot being composed of four different cultivars (CD 2694, BMX 7166, TEC 5718, TEC 6029) and the subplots of interference conditions (without the presence of corn volunteer plants, in the presence of corn until the V3, V6, V9 stages, or for the entire soybean cycle. Leaf area, shoot dry mass, plant height, chlorophyll index, and development stage were determined at 15, 30, and 49 DAE; we also determined apparent biological productivity, apparent harvest index, and components of productivity and grain yield. The cultivars showed losses in leaf area and shoot dry mass when in coexistence with corn (8 plants m-2) in the three periods evaluated. All cultivars showed losses in apparent biological productivity, apparent harvest index, and final grain yield when growing under competition throughout the cycle. Cultivars with a medium/long growth cycle, such as CD 2694 (maturity groups (GM): 6.9) and BMX 7166 (GM: 6.6), show a higher competitive ability up to V9 stage in contrast to cultivars with a short cycle, such as TEC 5718 (GM: 5.9) and TEC 6029 (GM: 5.7).	en-US
dc.description	Spontaneous corn plants in soybean crop are considered weeds because they compete for the same environmental resources. The objective of this study was to evaluate the competitive ability of soybean cultivars when in coexistence with spontaneous corn plants. A field experiment was conducted in CCGLTEC, Cruz Alta/RS, in 2014/15, in a split-plot design, with the main plot being composed of four different cultivars (CD 2694, BMX 7166, TEC 5718, TEC 6029) and the subplots of interference conditions (without the presence of corn volunteer plants, in the presence of corn until the V3, V6, V9 stages, or for the entire soybean cycle. Leaf area, shoot dry mass, plant height, chlorophyll index, and development stage were determined at 15, 30, and 49 DAE; we also determined apparent biological productivity, apparent harvest index, and components of productivity and grain yield. The cultivars showed losses in leaf area and shoot dry mass when in coexistence with corn (8 plants m-2) in the three periods evaluated. All cultivars showed losses in apparent biological productivity, apparent harvest index, and final grain yield when growing under competition throughout the cycle. Cultivars with a medium/long growth cycle, such as CD 2694 (maturity groups (GM): 6.9) and BMX 7166 (GM: 6.6), show a higher competitive ability up to V9 stage in contrast to cultivars with a short cycle, such as TEC 5718 (GM: 5.9) and TEC 6029 (GM: 5.7).	pt-BR
dc.format	application/pdf
dc.format	application/pdf
dc.language	eng
dc.language	por
dc.publisher	Federal University of Piauí	en-US
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/1961/601
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/1961/772
dc.rights	Copyright (c) 2019 Fernanda Cassiane Caratti, Fabiane Pinto Lamego, Mario Antonio Bianchi, Humberto Farias, Bruno Moncks da Silva, Joanei Cechin	en-US
dc.source	Comunicata Scientiae; Vol. 9 No. 4 (2018); 637-648	en-US
dc.source	Comunicata Scientiae; v. 9 n. 4 (2018); 637-648	pt-BR
dc.source	2177-5133
dc.source	2176-9079
dc.title	Interference of volunteer corn on soybean cultivars growth and yield	en-US
dc.title	Interference of volunteer corn on soybean cultivars growth and yield	pt-BR
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion