| Registro completo |
| Provedor de dados: |
PAB
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| País: |
Brazil
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| Título: |
Macronutrient uptake and export in transgenic corn under two levels of fertilization
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| Autores: |
Silva,Carine Gregório Machado
Resende,Álvaro Vilela de
Gutiérrez,Aarón Martínez
Moreira,Silvino Guimarães
Borghi,Emerson
Almeida,Gabriela Oliveira
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| Data: |
2018-12-01
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| Ano: |
2018
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| Palavras-chave: |
Zea mays
Fertilizer use efficiency
High productivity
Luxury consumption
Nutrient absorption
Nutritional requirement
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| Resumo: |
Abstract: The objective of this work was to evaluate macronutrient uptake and export by transgenic corn hybrids under medium and high fertilization levels. For each fertilization level, a randomized complete block design was carried out in the summer crop season, under no-tillage and supplementary irrigation, with four cultivars and four replicates. Plants were sampled throughout the entire cycle and separated into leaves, stalk, husk, cob, and grains for the determination of dry matter mass and accumulation of macronutrients in the different growth stages. Under the high fertilization level, a greater dry matter mass and nutrient uptake were observed, but grain yield was similar to that under the medium fertilization level. The uptake of N, P, Ca, Mg, and S occurs until later in the cycle of the transgenic cultivars, which also showed lower concentrations of P, K, and S in grains, when compared to older hybrids. The differential behavior of the evaluated cultivars under different fertilization levels indicates the need of updating and improving nutritional management and fertilizer recommendations for the corn crop.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001201363
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| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
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| Relação: |
10.1590/s0100-204x2018001200009
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| Formato: |
text/html
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| Fonte: |
Pesquisa Agropecuária Brasileira v.53 n.12 2018
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| Direitos: |
info:eu-repo/semantics/openAccess
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