Data/hora: 05/06/2024 07:53:01

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 03/12/2018
Data da última atualização: | 25/02/2019
Autoria: | GARCIA FUENTES, L. F.; SOUZA, L. C. F. de; SERRA, A. P.; JERUSA RECH; 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, n. 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: | N-fertilizer management; 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/187577/1/Corn-agronomic-traits.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (63390-1) - UPE - AP - DD -  -  -  - DIS