Effect of mineral and biological fertilization on three genotypes of common bean in an oxisol soi

Abstract

This research was conducted in order to evaluate the effect of mineral and organic fertilization (biofertilization) on the parameters of nodulation, yield components and crop yield of genotypes of common bean (Phaseolus vulgaris L.) BAT-304, Velasco Largo and BAT-93 in Typical Red Ferralitic Township “Quemado de Guines”, province of Villa Clara. We used an experimental design in randomized blocks with four replications. The following treatments were established: 1-Control; 2-Inoculation of Rhizobium etli and 3-Application of Urea 60 kg ha-1. Total number of nodules and nodule biomass, yield components and crop yield expressed as the weight of grains per plant was evaluated. Inoculation with Rhizobium outperformed all other treatments, with significant differences in the number of total nodule fresh weight and dry weight of nodules, between treatments. In yield components Rhizobium inoculation failed to stimulate at least one of these parameters for BAT-304 and Velasco Largo genotypes, whereas mineral fertilization favorably influenced BAT-93. Crop yield was stimulated by biological fertilization beating mineral fertilization on 10.4 % for genotype BAT-304 and 6.0 % at Velasco genotype Largo, while genotype BAT-93 mineral fertilization exceeded 18.45 % fertilization biological.

Keywords

• biofertilization
• Oxisol
• mineral fertilization
• Phaseolus vulgaris
• Rhizobium etli