Interference of volunteer corn on soybean cultivars growth and yield.
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).
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Language: | English eng |
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2019-02-07
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Subjects: | Soja, Milho, Produção, |
Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1105672 |
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dig-alice-doc-11056722019-02-07T23:36:27Z Interference of volunteer corn on soybean cultivars growth and yield. CARATTI, F. C. LAMEGO, F. P. BIANCHI, M. A. CECHIN, J. FARIAS, H. SILVA, B. M. da Fernanda Cassiane Caratti, UFPEL; FABIANE PINTO LAMEGO, CPPSUL; Mario Antonio Bianchi, Cooperativa Central Gaúcha; Joanei Cechin, UFPEL; Humberto Farias, UFPEL; Bruno Moncks da Silva, UFPEL. Soja Milho Produção 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). 2019-02-07T23:36:21Z 2019-02-07T23:36:21Z 2019-02-07 2018 2019-02-07T23:36:21Z Separatas Comunicata Scientiae, v. 9, n. 4, p. 637-648, 2018. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1105672 en eng openAccess |
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Soja Milho Produção Soja Milho Produção CARATTI, F. C. LAMEGO, F. P. BIANCHI, M. A. CECHIN, J. FARIAS, H. SILVA, B. M. da Interference of volunteer corn on soybean cultivars growth and yield. |
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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). |
author2 |
Fernanda Cassiane Caratti, UFPEL; FABIANE PINTO LAMEGO, CPPSUL; Mario Antonio Bianchi, Cooperativa Central Gaúcha; Joanei Cechin, UFPEL; Humberto Farias, UFPEL; Bruno Moncks da Silva, UFPEL. |
author_facet |
Fernanda Cassiane Caratti, UFPEL; FABIANE PINTO LAMEGO, CPPSUL; Mario Antonio Bianchi, Cooperativa Central Gaúcha; Joanei Cechin, UFPEL; Humberto Farias, UFPEL; Bruno Moncks da Silva, UFPEL. CARATTI, F. C. LAMEGO, F. P. BIANCHI, M. A. CECHIN, J. FARIAS, H. SILVA, B. M. da |
format |
Separatas |
topic_facet |
Soja Milho Produção |
author |
CARATTI, F. C. LAMEGO, F. P. BIANCHI, M. A. CECHIN, J. FARIAS, H. SILVA, B. M. da |
author_sort |
CARATTI, F. C. |
title |
Interference of volunteer corn on soybean cultivars growth and yield. |
title_short |
Interference of volunteer corn on soybean cultivars growth and yield. |
title_full |
Interference of volunteer corn on soybean cultivars growth and yield. |
title_fullStr |
Interference of volunteer corn on soybean cultivars growth and yield. |
title_full_unstemmed |
Interference of volunteer corn on soybean cultivars growth and yield. |
title_sort |
interference of volunteer corn on soybean cultivars growth and yield. |
publishDate |
2019-02-07 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1105672 |
work_keys_str_mv |
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