Data/hora: 25/06/2024 18:54:27

Biblioteca(s): | Embrapa Pesca e Aquicultura.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | B - 1
Data corrente: | 20/06/2017
Data da última atualização: | 25/10/2017
Autoria: | ALMEIDA, R. E. M. de; FAVARIN, J. L.; OTTO, R.; PIEROZAN JUNIOR, C.; OLIVEIRA, S. M. de; TEZOTTO, T.; LAGO, B. C.
Afiliação: | RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; JOSE LAERCIO FAVARIN, ESALQ; RAFAEL OTTO, ESALQ; CLOVIS PIEROZAN JUNIOR, ESALQ; SILAS MACIEL DE OLIVEIRA, ESALQ; TIAGO TEZOTTO, ESALQ; BRUNO COCCO LAGO, ESALQ.
Título: | Effects of nitrogen fertilization on yield components in a corn-palisadegrass intercropping system.
Ano de publicação: | 2017
Fonte/Imprenta: | Australian Journal of Crop Science, v. 11, n. 3, p. 352-359, 2017.
ISSN: | 1835-2707
DOI: | 10.21475/ajcs.17.11.03.pne273
Idioma: | Inglês
Conteúdo: | Pasture and grain crop intercropping is considered an alternative for increasing biomass production during the winter periods in Brazil for the establishment of no-tillage systems. We studied nitrogen (N) fertilization rates in a corn-palisadegrass intercropping system that would allow both corn and biomass production without a reduction in corn yield. A field trial was carried out in São Desidério, Bahia - Brazil using a complete block experimental design with a 5 x 2 factorial layout with two factors: N rate (control, 50, 100, 150, and 200 kg ha-1 N) and two cropping systems (corn with or without palisadegrass). Both corn and palisadegrass were sown simultaneously with N fertilizer applied at sowing. The measurements included corn biomass, grain yield and N uptake. In addition, palisadegrass biomass was assessed at corn harvest and at three consecutive times during the winter. There was an interaction between N rates and the intercropping system. Grain yield was affected by intercropping when N fertilizer rates were lower than 100 kg ha-1, but above that rate, corn grain yield reached 10,000 kg ha-1 and was similar with or without palisadegrass. Nitrogen fertilizers also positively affected corn N uptake. There was no residual effect of N fertilization on palisadegrass biomass production during the sampling periods. However, the biomass of the palisadegrass increased during the winter period and reached 5,000 kg ha-1 of dry matter by the following season. There was no corn yield reduction when corn was intercropped with palisadegrass using nitrogen rates above 100 kg ha-1. In addition, it is possible to increase biomass production for the establishment of no-tillage systems in Brazil.
Palavras-Chave: | Pasture establishment.
Thesagro: | Cultivo intercalado; Fertilizante nitrogenado; Milho; Plantio direto.
Thesaurus Nal: | Corn; Intercropping; No-tillage; Urea; Urochloa ruziziensis.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/160861/1/CNPASA-2017-ajcs.pdf
Registro original: | Embrapa Pesca e Aquicultura (CNPASA)
Exemplares: | CNPASA - (509-1) - UPC - AP - DD - CNPASA_AP14 -  - 2017.014 - DIS