Artículos de revistas
Custos e rentabilidade do milho em função do manejo do solo e da adubação nitrogenada
Fecha
2010-01-01Registro en:
Pesquisa Agropecuaria Tropical, v. 40, n. 1, p. 102-109, 2010.
1517-6398
1983-4063
10.5216/pat.v40i1.6888
2-s2.0-77958502578
2-s2.0-77958502578.pdf
2359995407903863
0000-0002-8468-0773
Autor
Socioeconomia e Tecnologia de Alimentos
Universidade Estadual Paulista (Unesp)
Institución
Resumen
Agronomic practices that help farmers to raise yield and reduce costs must be studied to ensure agricultural sustainability. Thus, the objective of this study was to analyze economically the effect of soil management and nitrogen fertilization in maize crops. Treatments consisted of a combination of 3 soil management techniques (plow harrows + floating harrows, chisel + floating harrows, and no-tillage), 5 periods of nitrogen fertilization (control - 0 kg ha -1 N; 120 kg ha -1 after sowing (S); 120 kg ha -1 in the V 6 stage; 30 kg ha -1 (S) + 90 kg ha -1 in V 6; 30 kg ha -1 (S) + 45 kg ha -1 in V 4 + 45 kg ha -1 in V 8 The total operating cost (TOC), gross revenue (GR), operating profit (OP), profitability index (PI), break-even yield, and break-even price were estimated. It was concluded that the no-tillage system, after 11 years of management, associated with nitrogen fertilization promotes positive PI and OP, being useful to farmers.