Data/hora: 11/06/2024 21:33:40

Biblioteca(s): | Embrapa Agrobiologia; Embrapa Cerrados.
Data corrente: | 18/05/2023
Data da última atualização: | 13/06/2023
Autoria: | FIGUEIREDO, C. C. de; MOREIRA, T. N.; COSER, T. R.; SILVA, L. P. da; LEITE, G. G.; CARVALHO, A. M. de; MALAQUIAS, J. V.; MARCHAO, R. L.; URQUIAGA, S.
Afiliação: | CÍCERO CÉLIO DE FIGUEIREDO, UNB; TÚLIO NASCIMENTO MOREIRA, UNB; THAIS RODRIGUES COSER, UNB; LETÍCIA PEREIRA DA SILVA, UNB; GILBERTO GONÇALVES LEITE, UNB; ARMINDA MOREIRA DE CARVALHO, CPAC; JUACI VITORIA MALAQUIAS, CPAC; ROBELIO LEANDRO MARCHAO, CPAC; SEGUNDO SACRAMENTO U CABALLERO, CNPAB.
Título: | Nitrogen use efficiency in an agrisilviculture system with Gliricidia sepium in the Cerrado Region.
Ano de publicação: | 2023
Fonte/Imprenta: | Plants, v. 12, n. 8, 1647, 2023.
DOI: | https://doi.org/10.3390/plants12081647
Idioma: | Inglês
Conteúdo: | Gliricidia (Gliricidia sepium) is a tree legume that has great potential for use in agriculture because of its multiple-use characteristics. However, there is little information in the literature about the effect of agrisilvicultural systems on nitrogen (N) cycling. This study evaluated the effect of densities of gliricidia on N cycling under an agrisilvicultural system. The treatments were composed of different densities of gliricidia: 667, 1000 and 1333 plants ha&#8722;1, with a fixed spacing of 5 m between the alleys. The efficiency of N use was investigated by using the 15N isotope tracer. In each plot, a transect perpendicular to the tree rows was established in two positions: (i) in the corn (Zea mays) row adjacent to the trees, and (ii) in the corn row in the center of the alley. The N fertilizer recovery efficiency ranged from 39% in the density of 667 plants ha&#8722;1 to 89% with 1000 plants ha&#8722;1. The effect of gliricidia on the N uptake by corn was higher in the central position of the alley with 1000 plants ha&#8722;1. The agrisilvicultural system with 1000 plants ha&#8722;1 was highly efficient in the recovery of mineral N, representing an excellent option for integrated production systems in tropical regions.
Palavras-Chave: | Agroforestry system; Integrated crop livestock forest system; Low carbon emission agriculture; Sustainable intensification.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Cerrados (CPAC)

Exemplares:

CNPAB - (42153-1) - UPC - AP - DD -  -  -  - DIS
CPAC - (37596-1) - UMT - AP - DD - DIGITAL -  - DIGITAL - DIS