Biostimulant effect on yield of two biofertilized bean (Phaseolus vulgaris L.) cultivars
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Abstract
Beans, inside legumes, stands out for the high human consumption and, in Cuba, this legume is part of the population basic diet. Hence, to look for alternatives that allow stimulating grain production and therefore, increase the satisfaction of consumer demand, constitute a necessity. The aim of this paper was to determine whether seed application of Quitomax® or Biobras-16® products, increases the plant yield of two biofertilized beans cultivars. The experiment was performed at Unit of Basis Science and Technology “Los Palacios”. Seed sprayings with Quitomax®, Qm (500 mg L-1) or Biobras-16®, BB-16 (0,05 mg L-1), before inoculation with Azofert® biofertilizer, Az, were made. Seeds were placed to Hydromorfic Gley Nodule Ferruginose Petroferric soil and four treatments (100 % N, control, Az+30 % N, Qm+Az+30 % N y BB-16+Az+30 % N) by cultivar were constituted. At the harvest time, the following evaluations: shoot, legume and grain dry weights, legume and grain number per plant, grain number per legume, fresh weight of 1 000 grains and practice yield, were made. Results showed Azofert® inoculation substituted 70 % of nitrogen fertilizer used without affecting crop yield. Besides, seed sprayings with Biobras-16®, before Azofert® inoculation, increased significantly crop yield, in both cultivars, compared to control treatment with 100 % nitrogen fertilizer.
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