Desempenho agronômico de quiabeiro em função da microbiolização das sementes com rizobactérias

Abstract

This work aimed to evaluate the agronomic characteristics of genotypes of okra in function of the seeds microbiolization with different rhizobacteria. The experiment was carried out at Garden of Teaching, Research and Extension, in the Campus of the Universidade Estadual de Montes Claros - UNIMONTES, in Janaúba-MG. The experimental design was in randomized blocks, in a factorial scheme 2 x 9 x 12 + 2, being two genotypes of okra, Santa Cruz 47 cv. and Dardo hybrid, nine rhizobacteria, LEBM 103, 105, 109, 112, 118, 134, 135, 152 and 154, twelve times of harvest, and two extra treatments, Santa Cruz 47 cv. and Dardo hybrid without the microbiolization of seeds, with four repetitions. Fruits number (FN), fruits number per plant (FNP), fruits diameter (FD), productivity (PDT), fresh fruit mass (FFM), fresh fruit mass per plant (FFMP), average fruit mass (AFM) and dry fruit mass (DFM) were evaluated. In the microbiolization or not of the seeds with rhizobacteria, LEBM 152 provided greater values of FFM, FFMP and PDT in the Dardo hybrid. The seeds microbiolization of the Santa Cruz 47 cv. with rhizobacteria LEBM 105 and 152 provided higher values of FN, FNP, FFM and FFMP. LEBM 105 propitiated greater PDT, and LEBM 152, greater FFMP. In the genotypes with seeds microbiolization, LEBM 152 provided greater NF and NFP in the Dardo hybrid. In the Santa Cruz 47 cv., larger AFM was gotten with rhizobacteria LEBM 103. 105, 112, 118, 152 and 154, beyond higher DMF with LEBM 103, 105, 134 and 154. When using LEBM 105 and 112, there was no difference between the genotypes for the variables FFM, FFMP and PDT. Also between the genotypes, Santa Cruz 47 presented greater AFM with LEBM 105, 112, 118 and 152, besides larger DMF with the rhizobacterium LEBM 112. Between the genotypes, Dardo showed inferior averages of AFM with rhizobacteria LEBM 105, 112, 118 and 152. These rhizobacteria raised the AFM of the Santa Cruz 47 cv. more than the Dardo hybrid. The LEBM 112 presented larger value for DMF. Concerning to the genotypes with seeds microbiolization during the harvest, there was a increase of FN, FNP, FFM, FFMP and PDT in both ones. Between 39th and 41th day, maximum values of 33.42 fruits, 8.47 fruits, 577.53 g, 144.370 g and 2887.66 kg.ha¹, were gotten respectively for the Dardo hybrid, and between 70th and 77th day, of 23.70 fruits, 6.18 fruits, 595.61 g of FFM, 149.07 g of FFMP and 2977.37 kg.ha¹ of PDT, respectively for the Santa Cruz 47 cv.. After that, these values were reduced until the last harvest, 77th day. The Dardo hybrid presented greater FN, FNP and PDT until 49th day, with seeds microbiolization e, later the highest values were observed for the Santa Cruz 47 variety. The okra seeds microbiolization with rhizobacteria is viable. The rhizobacteria more recommended are LEBM 105 for culture of Dardo hybrid, and LEBM 105, 112 and 152 for Santa Cruz 47 cv.