OF CHICKPEA AND GRASS PEA COMPARATIVE PRODUCTIVITY WHEN APPLICATION OF MICROBIOLOGICAL PREPARATIONS IN THE ORYOL REGION AND THE REPUBLIC OF CRIMEA CONDITIONS

The purpose of the study was to determine the effectiveness of the use of microbiological preparations on promising varieties of chickpea and grass pea. The studies were carried out in parallel in 2020–2022 under the conditions of the Oryol region and the Republic of Crimea (Krasnogvardeisky district). The chickpea variety Avatar and grass pea variety Slavyanka served as the material for the research (breeding of FSC LGC). Experiments were laid according to the following variants: 1 - control (no treatment); 2 – pre-sowing seed treatment with Rizobinagro, preparation application rate 100 ml/ha; 3 – pre-sowing seed treatment with a complex of biopreparations consisting of a mix of Rizobinagro, Phosphostimagro and Bioprofidagro, application rate 300 ml/ha. Experiments were laid on experimental fields of FSC LGC and Research Institute of Agriculture of Crimea on plots of 10 m2 and 27 m2, respectively, in four repetitions. The effectiveness of the use of microbiological preparations on varieties of chickpea and grass pea, both in the conditions of the Oryol region and in the conditions of the steppe Crimea, is largely determined by weather conditions, soil characteristics (especially the content of organic matter, mobile forms of nitrogen and acidity) and the presence of local populations of nodule bacteria in the soil. On average, over the years of study, the use of a complex biological product (CMP) showed the highest efficiency, pre-sowing inoculation with which had a positive stimulating effect on the growth and development of chickpea and grass pea plants, which was especially noticeable in years that were unfavorable in terms of agro meteorological indicators. In this variant, there was an increase in the yield of chickpea grain by 0.16-0.28 t/ha and grass pea by 0.10-0.27 t/ha compared to the control. Presowing seed inoculation with Rizobinagro in some years increased the protein content in chickpea grain by 3.3%, grass pea by 1.7% compared to control, the use of CMP increased the protein content in grass pea grain by 1.3% compared to control