Nitrogen fertilization in the intercropping of corn with two Brachiaria species in a no‑tillage system
The objective of this work was to evaluate grain and forage yield of the intercropping of corn with Brachiaria species (2008/2009 and 2009/2010 crop seasons), subjected to nitrogen topdressing rates in a no tillage system. A completely randomized block design was used, with four replicates, in a 2x5 factorial arrangement, with two Brachiaria species (Urochloa brizantha 'Xaraés' and U. ruziziensis) and five N topdressing rates: 0, 50, 100, 150, and 200 kg ha‑1. The following were evaluated: indirect readings of leaf-chlorophyll content (Falker chlorophyll index, ICF), macronutrient content in leaves, yield components and grain yield of corn, and forage dry mass yield after intercropping. It was observed that the species U. ruziziensis was more competitive with corn in intercropping, providing lower nutritional content and ICF in both evaluated seasons. Vegetative growth, yield components, and grain yield of corn were not affected by the intercrops. Nitrogen topdressing fertilization linearly increases the weight of 100 grains (2008/2009 season), and all yield components and grain yield (2009/2010 season).
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Pesquisa Agropecuaria Brasileira
2012
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rev-pab-br-article-104792012-09-27T14:23:16Z Nitrogen fertilization in the intercropping of corn with two Brachiaria species in a no‑tillage system Adubação nitrogenada no consórcio de milho com duas espécies de braquiária em sistema plantio direto Costa, Nídia Raquel Andreotti, Marcelo Gameiro, Roberta de Aquino Pariz, Cristiano Magalhães Buzetti, Salatiér Lopes, Keny Samejima Mascarenhas Urochloa brizantha 'Xaraés'; Urochloa ruziziensis; Zea mays; chlorophyll; crop‑livestock integration; nitrogen. Urochloa brizantha 'Xaraés'; Urochloa ruziziensis; Zea mays; clorofila; integração lavoura‑pecuária; nitrogênio. The objective of this work was to evaluate grain and forage yield of the intercropping of corn with Brachiaria species (2008/2009 and 2009/2010 crop seasons), subjected to nitrogen topdressing rates in a no tillage system. A completely randomized block design was used, with four replicates, in a 2x5 factorial arrangement, with two Brachiaria species (Urochloa brizantha 'Xaraés' and U. ruziziensis) and five N topdressing rates: 0, 50, 100, 150, and 200 kg ha‑1. The following were evaluated: indirect readings of leaf-chlorophyll content (Falker chlorophyll index, ICF), macronutrient content in leaves, yield components and grain yield of corn, and forage dry mass yield after intercropping. It was observed that the species U. ruziziensis was more competitive with corn in intercropping, providing lower nutritional content and ICF in both evaluated seasons. Vegetative growth, yield components, and grain yield of corn were not affected by the intercrops. Nitrogen topdressing fertilization linearly increases the weight of 100 grains (2008/2009 season), and all yield components and grain yield (2009/2010 season). O objetivo deste trabalho foi avaliar a produtividade de grãos e de forragem do consórcio entre milho e espécies de braquiária (safras de 2008/2009 e 2009/2010), submetidos a doses de nitrogênio em cobertura, em sistema plantio direto. Utilizou-se o delineamento experimental inteiramente casualizado, com quatro repetições, em arranjo fatorial 2x5, com duas espécies de braquiária (Urochloa brizantha, 'Xaraés' e U. ruziziensis) e cinco doses de N aplicadas em cobertura: 0, 50, 100, 150 e 200 kg ha‑1. Foram avaliados: leituras indiretas do teor foliar de clorofila (índice de clorofila Falker, ICF), teores de macronutrientes foliares, componentes da produção e produtividade de grãos do milho, e produtividade de matéria seca das forrageiras após o consórcio. Constatou-se que a espécie U. ruziziensis foi a mais competitiva com o milho em consórcio, o que proporcionou menores teores nutricionais e ICF nas duas safras analisadas. O crescimento vegetativo, os componentes da produção e a produtividade de grãos do milho não foram influenciados pelos consórcios. A adubação nitrogenada em cobertura aumenta linearmente a massa de 100 grãos (safra de 2008/2009), e todos os componentes da produção e a produtividade de grãos (safra de 2009/2010). Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira CNPq, Fapesp 2012-09-25 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/10479 Pesquisa Agropecuaria Brasileira; v.47, n.8, ago. 2012; 1038-1047 Pesquisa Agropecuária Brasileira; v.47, n.8, ago. 2012; 1038-1047 1678-3921 0100-104x por https://seer.sct.embrapa.br/index.php/pab/article/view/10479/7631 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/10479/5857 |
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Costa, Nídia Raquel Andreotti, Marcelo Gameiro, Roberta de Aquino Pariz, Cristiano Magalhães Buzetti, Salatiér Lopes, Keny Samejima Mascarenhas |
| spellingShingle |
Costa, Nídia Raquel Andreotti, Marcelo Gameiro, Roberta de Aquino Pariz, Cristiano Magalhães Buzetti, Salatiér Lopes, Keny Samejima Mascarenhas Nitrogen fertilization in the intercropping of corn with two Brachiaria species in a no‑tillage system |
| author_facet |
Costa, Nídia Raquel Andreotti, Marcelo Gameiro, Roberta de Aquino Pariz, Cristiano Magalhães Buzetti, Salatiér Lopes, Keny Samejima Mascarenhas |
| author_sort |
Costa, Nídia Raquel |
| title |
Nitrogen fertilization in the intercropping of corn with two Brachiaria species in a no‑tillage system |
| title_short |
Nitrogen fertilization in the intercropping of corn with two Brachiaria species in a no‑tillage system |
| title_full |
Nitrogen fertilization in the intercropping of corn with two Brachiaria species in a no‑tillage system |
| title_fullStr |
Nitrogen fertilization in the intercropping of corn with two Brachiaria species in a no‑tillage system |
| title_full_unstemmed |
Nitrogen fertilization in the intercropping of corn with two Brachiaria species in a no‑tillage system |
| title_sort |
nitrogen fertilization in the intercropping of corn with two brachiaria species in a no‑tillage system |
| description |
The objective of this work was to evaluate grain and forage yield of the intercropping of corn with Brachiaria species (2008/2009 and 2009/2010 crop seasons), subjected to nitrogen topdressing rates in a no tillage system. A completely randomized block design was used, with four replicates, in a 2x5 factorial arrangement, with two Brachiaria species (Urochloa brizantha 'Xaraés' and U. ruziziensis) and five N topdressing rates: 0, 50, 100, 150, and 200 kg ha‑1. The following were evaluated: indirect readings of leaf-chlorophyll content (Falker chlorophyll index, ICF), macronutrient content in leaves, yield components and grain yield of corn, and forage dry mass yield after intercropping. It was observed that the species U. ruziziensis was more competitive with corn in intercropping, providing lower nutritional content and ICF in both evaluated seasons. Vegetative growth, yield components, and grain yield of corn were not affected by the intercrops. Nitrogen topdressing fertilization linearly increases the weight of 100 grains (2008/2009 season), and all yield components and grain yield (2009/2010 season). |
| publisher |
Pesquisa Agropecuaria Brasileira |
| publishDate |
2012 |
| url |
https://seer.sct.embrapa.br/index.php/pab/article/view/10479 |
| work_keys_str_mv |
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