Adubação nitrogenada e idade de corte na produção de matéria seca do capim-elefante no Cerrado
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/12/2012
|
Resumo |
The objective of this study was to investigate the effect of the application of N fertilizer and the cutting age on the dry biomass production of elephant grass. The experiment was performed with the variety Paraiso and planted in a Ferralsol in 2008 in the district of Gurupi (State of Tocantins). Four different rates of urea application were tested (0, 50, 100 and 150 kg ha(-1)) and harvests were made at 120, 150 or 180 days after germination (DAG) of the setts. The dry matter and total N accumulation were evaluated. Dry matter production increased with dose of N, the greatest effect being observed at 180 DAG. There was a linear increase in dry matter (R-2 = 0.75**) and N accumulation (R-2 = 0.96**) permitting a productivity of 34 t ha(-1) of dry matter and an accumulation of 471 kg N ha(-1). The N utilization efficiency (biomass production per unit of applied N) increased with plant age. The higher efficiency of N use favored the quality of biomass production for energy production owing to the higher fibre content. |
Formato |
1282-1288 |
Identificador |
http://dx.doi.org/10.1590/S1415-43662012001200004 Revista Brasileira de Engenharia Agricola E Ambiental. Joao Pessoa Pb: Universidade Federal da Paraíba (UFPB) Ccsa, v. 16, n. 12, p. 1282-1288, 2012. 1415-4366 http://hdl.handle.net/11449/40582 WOS:000315456900004 |
Idioma(s) |
por |
Publicador |
Universidade Federal da Paraíba (UFPB) Ccsa |
Relação |
Revista Brasileira de Engenharia Agrícola e Ambiental |
Direitos |
openAccess |
Palavras-Chave | #Pennisetum purpureum #biomass #bioenergy |
Tipo |
info:eu-repo/semantics/article |