Data/hora: 18/06/2024 17:34:41

Biblioteca(s): 	Embrapa Pesca e Aquicultura.	
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