The objective of this work was to evaluate the economic viability of bean genotype, with and without the additional fertilization, in relation to the residual potato fertilization. Four experiments with bean in rotation of potato crop were conducted in Lavras, MG, Brazil. In each crop (summer 98/99 and winter--spring 99 season) two experiments were set up: the first using only the residual potato fertilization and the other using, besides the mentioned residue, a fertilization for the bean plant of 500 kg ha-1 of the fertilizer with 4148 formulation at planting and 40 kg ha-1 of N top dressing under the form of ammonium sulfate. The experimental design was a 5 x 5 lattice with three replications, evaluating six commercial cultivars and 19 strains used in the bean plant breeding program of the Universidade Federal de Lavras. The joint analysis showed that the bean genotype presented non-coincident behavior in response to fertilization. In both seasons the fertilization of the legume raised grain yield but only in the winter-spring crop it proved to be economically viable. The results also showed that it is possible to obtain a good bean yield utilizing only the residual potato fertilization.
Phaseolus vulgaris; sequential cropping; rotational cropping; yields
