Preparations based on bacteria from frozen rocks during the dressing of spring wheat seeds

Abstract

The analysis of the effect of the applied biologies and chemical protectant in seed treatment carried out using paper rolls showed germination against the background of chemical dressing + bacteria – 85-96% at the control of 88%, against the background of pure bacteria 81-88% decrease by 2-10% from the background with chemical dressing. The root length was 11-13 cm, the root mass significantly exceeded the control on the variants of mixtures of chemical dressing and biopreparation. The length of the coleoptile significantly decreased by 1.6-2.6 cm according to the chemical dressing options, the sprout length varied between 9.6-12.0 cm, and a decrease in the sprout length was observed in most variants with a chemical protectant. Against the background of pure chemical protection (seed dressing), the protection efficiency was 100% during the tillering phase and 86% by the end of the growing season of the crop against root rot, mixed versions of the protectant with bacteria reduced faster the protection level. As a result, experimental data were obtained for testing mixtures of bacterial strains of R. Bacillus in the system of pre-sowing dressing of spring wheat seeds, with a positive effect on yield, strains of biological products were isolated (szr + 875 x 9-08; szr + 875 x Mm8; szr + 9-08 x Mm8).