| Registro completo |
| Provedor de dados: |
PAB
|
| País: |
Brazil
|
| Título: |
Corn agronomic traits and recovery of nitrogen from fertilizer during crop season and off-season
|
| Autores: |
Fuentes,Luis Felipe Garcia
Souza,Luiz Carlos Ferreira de
Serra,Ademar Pereira
Rech,Jerusa
Vitorino,Antonio Carlos Tadeu
|
| Data: |
2018-10-01
|
| Ano: |
2018
|
| Palavras-chave: |
Zea mays
N-fertilizer management
Plant nutrition
Soil fertility
Soil-N supply
|
| Resumo: |
Abstract: The objective of this work was to evaluate corn agronomic traits in a cultivation subjected to different N rates, during the fall-winter (off-season) and spring-summer crop seasons, and N recovery from fertilizer. The experiment was set up in a randomized complete block design with four replicates, in a 5x2 factorial arrangement, with the following treatments: five N topdressing rates - 0, 30, 60, 90, and 120 kg ha-1 -, using urea as source; and two crop seasons, fall-winter and spring-summer. The following variables were determined: plant height, height of the first ear insertion, number of grains per ear, diameter and length of ear, 1,000-grain weight, N concentration in the leaves and grains, grain-protein concentration, grain yield, N recovery from fertilizer, and soil-N supply. Nitrogen rates in the fertilizer in the fall-winter season had no effect on grain yield, although corn agronomic traits showed a greater reliance on fertilizer-N rates in that season than in the spring-summer, which is a season associated to a greater capacity of soil-N supply to plants. The quantification of soil-N supply enabled knowing the nutrient dynamics during the fall-winter and the spring-summer seasons, which may be useful to guide N fertilization of corn.
|
| Tipo: |
Info:eu-repo/semantics/article
|
| Idioma: |
Inglês
|
| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001001158
|
| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
|
| Relação: |
10.1590/s0100-204x2018001000009
|
| Formato: |
text/html
|
| Fonte: |
Pesquisa Agropecuária Brasileira v.53 n.10 2018
|
| Direitos: |
info:eu-repo/semantics/openAccess
|
|
