Data/hora: 07/06/2024 11:20:00

Biblioteca(s): | Embrapa Amazônia Oriental.
Data corrente: | 05/12/2013
Data da última atualização: | 20/10/2022
Autoria: | COUTINHO NETO, A. M.; COUTINHO, E. L. M.; ORIOLI JÚNIOR, V.; CORÁ, J. E.; SILVA, A. R. B. e; SCATOLIN, M.
Afiliação: | André Mendes COUTINHO NETO, GRADUANDO UNESP; Edson Luiz Mendes COUTINHO, UNESP; Valdeci ORIOLI JÚNIOR, IFTM; José Eduardo CORÁ, UNESP; ALYSSON ROBERTO BAIZI E SILVA, CPATU; Marcelo SCATOLIN, UNESP.
Título: | Nitrogen fertilization management in no-tillage maize with different witer crops.
Ano de publicação: | 2013
Fonte/Imprenta: | Bioscience Journal, Uberlândia, v. 29, n. 6, p. 1981-1988, Nov./Dec. 2013.
Idioma: | Inglês
Conteúdo: | The nitrogen (N) utilization by maize grown in a no-tillage system is dependent on the quality of the preceding crop residues, which may promote differences in N fertilization efficiency with respect to time. Thus, the purpose of this study was to evaluate the nutritional state, dry matter production and grain yield of maize grown in a clayey soil (Typic Acrustox) under a no-tillage system. The split-plot experimental design was set up in randomized complete blocks with three replications, in which the main plot was treated with different N application strategies and the split-plots were planted with winter crops (soybean and maize). The fertilizer strategies (rate: 120 kg ha-1 of N) used were as follows: (0 ? 0), (20 ? 100), (60 ? 60), (120 ? 0) and (0 ? 120), with the first number corresponding to the rate of N (kg ha-1) applied before planting and the second number corresponding to the top dressing rate (V4-5 stage). Nitrogen fertilization raised the N content (in shoots and leaves) and maize yield (in the shoot dry matter and grain). The maize grown after soybean had both greater N concentrations and production (dry matter and grain) relative to the maize grown after maize. Applying 120 kg ha-1 N did not significantly affect the evaluated variables, regardless of the winter crop.
Palavras-Chave: | Adubação nitrogenada.
Thesagro: | Manejo; Milho; Plantio Direto.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/93576/1/Artigo-Revista-B1-1.pdf
Registro original: | Embrapa Amazônia Oriental (CPATU)
Exemplares: | CPATU - (48789-1) - UPC - AP - DD -  -  -  - DIS