INOCULAÇÃO COM Azospirillum BRASILENSE NA CULTURA DA BATATA (Solanum tuberosum L.)

Abstract

The objective of this work was evaluate the potato development and productivity submitted to inoculation with Azospirillum brasilense. The experimental design used was a randomized block design, with four replications. The plots consisted of a 25 L vase containing the potato variety Agata submitted to the application of five doses of commercial inoculant with A. brasilense (0, 200, 400, 600 and 800 ml per ha-1) in the treatment of the tuber seed. The evaluations performed were: number of stems per plant, height of the main stem, number of leaves of the main stem and number of leaves per plant and tuber production, accumulation of MMS in leaves, stems, roots and tubers. The data obtained were submitted to the analysis of variance by the F test. The means of the evaluated parameters were represented in the form of tables. By analysis of variance we can state that the treatment of Agata potato seeds with different doses of the inoculant A. brasilenses did not affect the agronomic parameters: Number of stems per plant, number of leaves on the main stem, number of leaves per plant, stem diameter main and height of the main rod. In the present study, no gains in growth or biomass of stems, leaves, roots and tubers were observed. In the same way as the previous vegetative growth parameters, the application of different inoculant doses didn’t affect the tuber fresh mass parameters either; dry mass of leaves; stem dry mass, root dry mass and tuber dry mass.