Effects of crop rotation, green manure, and nitrogen fertilizer on the bean yield

The present work was carried out at Selviria, MS, Brazil, with the objectiv e of evaluating the effects of velvetbean, lab-lab and corn crop residues o n the development and yield of winter bean (Phaseolus vulgaris L.) crops. T he 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 v elvetbean was incorporated in rotation with corn crop residues. The best yi eld was obtained in the treatments: velvetbean incorporation, lab-lab and c orn + 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 %.