Pesquisa Agropecuária Brasileira
On-line version ISSN 1678-3921
ARF, ORIVALDO et al. EFFECTS OF CROP ROTATION, GREEN MANURE, AND NITROGEN FERTILIZER ON THE BEAN YIELD. Pesq. agropec. bras. [online]. 1999, vol.34, n.11, pp. 2029-2036. ISSN 1678-3921. http://dx.doi.org/10.1590/S0100-204X1999001100008.
The present work was carried out at Selvíria, MS, Brazil, with the objective of evaluating the effects of velvetbean, lab-lab and corn crop residues on the development and yield of winter bean (Phaseolus vulgaris L.) crops. The experimental design utilized was a randomized blocks obtained through an arrangement between the incorporation of different organic residues, with and without nitrogen supply in the bean crop. Grain yield was higher when velvetbean was incorporated in rotation with corn crop residues. The best yield was obtained in the treatments: velvetbean incorporation, lab-lab and corn + velvetbean sowed 100 days after corn sowing. Application of 45 kg ha-1 of N fertilizer (urea) increased the yield of winter bean crops in 17,8%.
Keywords : organic residues; nitrogen supply; bean crop rotation.