Data/hora: 01/06/2024 02:38:06

Biblioteca(s): | Embrapa Gado de Corte.
Data corrente: | 03/12/2018
Data da última atualização: | 09/01/2019
Autoria: | GARCIA FUENTES, L. F.; SOUZA, L. C. F. de; SERRA, A. P.; RECH, J.; VITORINO, A. C. T.
Afiliação: | Luis Felipe Garcia Fuentes, Universidade Federal da Grande Dourados - UFGD/Faculdade de Agronomia; Luiz Carlos Ferreira de Souza, Universidade Federal da Grande Dourados - UFGD/Faculdade de Agronomia; ADEMAR PEREIRA SERRA, CNPGC; Jerusa Rech, Universidade Federal da Grande Dourados - UFGD/Faculdade de Agronomia; Antonio Carlos Tadeu Vitorino, Universidade Federal da Grande Dourados - UFGD/Faculdade de Agronomia.
Título: | Corn agronomic traits and recovery of nitrogen from fertilizer during crop season and off-season.
Ano de publicação: | 2018
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, v. 10, p. 1158-1166, Oct. 2018
Idioma: | Inglês
Notas: | Título em português: Características agronômicas do milho e recuperação de nitrogênio do fertilizante durante a safra e a safrinha.
Conteúdo: | 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.
Palavras-Chave: | De N pelo solo; Manejo da adubação nitrogenada; N-fertilizer management; Nutrição de plantas; Soil-N supply.
Thesagro: | Fertilidade do Solo; Zea Mays.
Thesaurus Nal: | Plant nutrition; Soil fertility.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/187582/1/Corn-agronomic-traits.pdf
Registro original: | Embrapa Gado de Corte (CNPGC)
Exemplares: | CNPGC - (17173-1) - UPC - AP - DD -  -  -  - DIS