Data/hora: 22/06/2024 19:06:11

Biblioteca(s): | Embrapa Pesca e Aquicultura.
Data corrente: | 29/11/2018
Data da última atualização: | 04/12/2018
Autoria: | ALMEIDA, R. E. M. de; FAVARIN, J. L.; OTTO, R.; FRANCO, H.; REIS, A. F. B.; MOREIRA, L. A.; TRIVELIN, P.
Afiliação: | RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; JOSE LAERCIO FAVARIN, ESALQ; RAFEL OTTO, ESALQ; HENRIQUE FRANCO; ANDRÉ FROES BORJA REIS, ESALQ; LILIAN ANGELICA MOREIRA, ESALQ; PAULO TRIVELIN, CENA.
Título: | Nitrogen recovery efficiency for corn intercropped with palisade grass.
Ano de publicação: | 2018
Fonte/Imprenta: | Bragantia, v. 77, n. 4, p. 557-566, 2018.
DOI: | 10.1590/1678-4499.2017242
Idioma: | Inglês
Conteúdo: | Intercropping corn and palisade grass is a technique to increase straw production, soil C contents, nutrient cycling and crop yield. However, concerns arise from nitrogen (N) uptake by the intercropping crop causing reduction in the yield of the corn. Our objective was to evaluate N recovery efficiency (NRE), and the N dynamics in the soil-plant system in corn intercropped with palisade grass. A field trial was carried out in Bahia, Brazil, evaluating two cropping systems: corn (monoculture) and corn intercropped with palisade grass sowed between rows on the same day as the corn crop, with four replicates in a completely randomized block design. Nitrogen (150 kg&#8729;ha?1of 15N-urea) was applied at sowing to determine NRE, which means the amounts of N-fertilizer uptake in corn and palisade grass, the amounts of N-fertilizer in soil and the 15N-fertilizer balance. Neither the NRE (63.3% in monoculture and 57.2% in intercropping) nor corn grain yield (9,800 kg&#8729;ha?1 in monoculture and 9,671 kg&#8729;ha?1 in intercropping) was affected by intercropping, which accumulated only 2.1 kg&#8729;ha?1 of N-fertilizer or 1.4% N rate. In addition, palisade grass yielded 2,265 kg&#8729;ha?1 of dry matter. The balance indicated that 82.4% of N-fertilizer was recovered in the monoculture and 86.9% in the intercropping. Intercropping palisade grass does not affect grain yield or N corn nutrition and has the potential to increase straw production contributing to maintenance of no-till.
Thesagro: | Cerrado; Milho; Nitrogênio; Plantio Direto; Zea Mays.
Thesaurus Nal: | Corn; Grasses; Nitrogen; No-tillage; Urochloa ruziziensis.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/187284/1/CNPASA-2018-bragantia.pdf
Registro original: | Embrapa Pesca e Aquicultura (CNPASA)
Exemplares: | CNPASA - (729-1) - UPC - AP - DD - CNPASA_AP58 -  - 2018.058 - DIS