ECONOMIC ANALYSIS OF CROP ROTATION SYSTEMS FOR THE PLANALTO MÉDIO OF RIO GRANDE DO SUL STATE

  • HENRIQUE PEREIRA SANTOS
  • IVO AMBROSI
  • JOÃO CARLOS IGNACZAK
  • JULIO CESAR BARRENECHE LHAMBY
  • GUIDO ANDRÉ SCHNEIDER
Keywords: inputs, costs, gross return, net return.

Abstract

During nine years the economic effects of seven c rop rotation systems were assessed. The following systems were evaluated: system I (wheat/ soybean); system II (wheat/soybean. from 1987 to 1989, and wheat/ soybean and common vetch/corn, from 1990 to 1995); system III (wheat/soybean, black oats or white oats/soybean, and common vetch/corn); system 1V (wheat/soybean, white oats/soybean, flax/soybean, and common vetch/corn, from 1987 to 1989, and wheat/soybean, sunflower or black oats/soybean, white oats/soybean, and common vetch/ corri, from 1990 to 1995); system V (wheat/soybean, wheat/soybean, black oats or white oats/soybean, and common vetch/corn); system VI (wheat/soybean, wheat/soybean, white oats/soybean, flax/soybean, and common vetch/ com, from 1987 to 1989, and wheat/soybean, wheat/soybean, sunflower or black oats/soybean, white oats/soybean, and common vetch/corn, from 1990 to 1995); and system VII (winter fallow/soybean, from 1990 to 1995). In the mean from 1987 to 1989, systems IV and VI showed h igher net returns than systems III and V, respectively. In the average from 1990 to 1995, no si gni ficant differences were observed for net return in Ihe systems evaluated.

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Published
2001-12-28
How to Cite
SANTOS, H. P.; AMBROSI, I.; IGNACZAK, J. C.; LHAMBY, J. C. B.; SCHNEIDER, G. A. ECONOMIC ANALYSIS OF CROP ROTATION SYSTEMS FOR THE PLANALTO MÉDIO OF RIO GRANDE DO SUL STATE. Pesquisa Agropecuária Gaúcha, v. 7, n. 2, p. 175-182, 28 Dec. 2001.

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