influência da consorciação com brachiaria ruziziensis e do nitrogênio residual na cultura do milho intercropping with brachiaria ruziziensis influence and residual nitrogen in corn crop
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2012
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Abstract
A viabilidade e a implantação do sistema de semeadura direta na região do Cerrado brasileiro têm tido limitações pela dificuldade de obtenção e manutenção de palhada adequada sobre o solo. Nesse contexto, o objetivo do trabalho foi avaliar a influência do nitrogênio residual, aplicado no feijoeiro, no número de folhas fotossinteticamente ativas, nas características agronômicas e na proteína bruta em grãos de milho, consorciado ou não. Pode-se concluir que não houve efeito das doses residuais de aplicação de nitrogênio, aplicado no feijoeiro cultivado anteriormente, sobre o desenvolvimento vegetativo e reprodutivo do milho e que no consórcio do milho com a Brachiaria ruziziensis, houve aumento na velocidade de senescência foliar e reduziu teor de proteína bruta em grãos, densidade populacional final, número de espigas por área, nitrogênio total foliar, diâmetro de ráquis, número de grãos por fileira e massa de 100 grãos, sem afetar a produtividade.
The no tillage feasibility and implementation in the Brasilian Cerrado region has been limited by the difficulty of obtaining and maintaining adequate mulching on the soil. In this context, the objective was to evaluate the influence of residual nitrogen, applied to common beans, in the leaves number active photosynthetically, the agronomic characteristics and crude protein in corn grains, intercropped or not. We can be concluded there was no residual effect of nitrogen rates application, applied previously in common bean, on the vegetative and reproductive development in corn and corn intercropped with Brachiaria ruziziensis, there was increase in the leaf senescence and reduced crude protein in grains, final population density, spikes number per area, total leaf nitrogen, rachis diameter, kernels number per row and 100 grains weight, without to affect yield.
The no tillage feasibility and implementation in the Brasilian Cerrado region has been limited by the difficulty of obtaining and maintaining adequate mulching on the soil. In this context, the objective was to evaluate the influence of residual nitrogen, applied to common beans, in the leaves number active photosynthetically, the agronomic characteristics and crude protein in corn grains, intercropped or not. We can be concluded there was no residual effect of nitrogen rates application, applied previously in common bean, on the vegetative and reproductive development in corn and corn intercropped with Brachiaria ruziziensis, there was increase in the leaf senescence and reduced crude protein in grains, final population density, spikes number per area, total leaf nitrogen, rachis diameter, kernels number per row and 100 grains weight, without to affect yield.
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fiorentin2012revistainfluncia
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| Authors | ;Ciro Franco Fiorentin;Leandro Borges Lemos;Domingos Fornasieri Filho;Celso Antonio Jardim |
| Journal | ciência da informação |
| Year | 2012 |
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