Risk analysis of crop production systems including winter and summer annual forages under no-tillage

• Autor(a) principal: Santos, Henrique Pereira
• Data de Publicação: 2004
• Outros Autores: Fontaneli, Renato Serena, Ambrosi, Ivo
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Agropecuária Gaúcha (Online)
• Texto Completo: http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/299
• topic: net return, mean-variance, stochastic dominance.; receita líquida, média variância, dominância estocástica.

From 1995/96 up to 1999/00, in Passo Fundo, RS, Brazil, crop production systems including winter and summer annual pasture under no-tillage were assessed. Six production systems were evaluated: system I (wheat/ soybean, black oats + common vetch pasture/com); system II (wheat/soybean, black oats + common vetch + ryegrass pasture/corn); system III (wheat/soybean, black oats + common vetch pasture/pearl millet pasture); system IV (wheat/soybean, black oats + common vetch + ryegrass pasture/pear) millet pasture), system V (wheat/soybean, white black/soybean, and oats + common vetch pasture/pearl millet pasture); and system VI (wheat/soybean, white black/soybean, and black oats + common vetch + ryegrass pasture/pear) millet). Two types of analysis were applied to the net return of production systems: mean-variance and risk analyses. The systems 1 and II presented h igher net return per hectare by the mean-variance analysis. The system II was the best production system to be offered as alternative to the farmers for profit and lower risk standpoints by the stochastic dominance analysis.