Título:	Plant density and mineral nitrogen fertilization influencing yield, yield components and concentration of oil and protein in soybean grains.
Autoria:	FERREIRA, A. S. BALBINOT JUNIOR, A. A. WERNER, F. ZUCARELI, C. FRANCHINI, J. C. DEBIASI, H.
Afiliação:	ANDRÉ SAMPAIO FERREIRA, UEL; ALVADI ANTONIO BALBINOT JUNIOR, CNPSO; FLAVIA WERNER, UEL; CLAUDEMIR ZUCARELLI, UEL; JULIO CEZAR FRANCHINI DOS SANTOS, CNPSO; HENRIQUE DEBIASI, CNPSO.
Ano de publicação:	2016
Referência:	Bragantia, Campinas, v. 75, n. 3, p. 362-370, Jun. 2016.
Conteúdo:	There are few studies on the interaction between soybean plant density and nitrogen fertilization. This research aimed to assess the effect of mineral nitrogen associated to different plant densities on yield, yield components and oil and protein concentrations of soybean grains. Two experiments were conducted in the 2013/2014 and 2014/2015 growing seasons, with randomized complete block design, in a split plots scheme, with six replications. Four sowing densities (150, 300, 440 and 560 thousand viable seeds; ha-1) were allocated in the plots, and two nitrogen levels (0 and 45 kg N; ha-1, applied at V2, using ammonium sulfate) were allocated in the subplots. There was no interaction between soybean plant density and the application of mineral nitrogen on yield, yield components and oil and protein concentrations in soybean grains. Higher plant population reduced the number of pods per plant and the contribution of branch sinks to the grain yield, but the effects on yield differed among the growing seasons. The mineral nitrogen fertilization did not increase yield and protein and oil concentrations in the grains, thus it was unnecessary.
Thesagro:	Soja
ISSN:	1678-4499
Digital Object Identifier:	10.1590/1678-4499.479
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPSO)