Bacterial preparations in the technology of growing winter wheat seeds in the western Forest-Steppe of Ukraine
Foothill and mountain agriculture and stockbreeding
Бактеріальні препарати в технології вирощування насіння пшениці озимої в Західному Лісостепу України
Bacterial preparations in the technology of growing winter wheat seeds in the western Forest-Steppe of Ukraine The introduction of innovative achievements of science into the seedgrowing industry depends on rational theoretical and scientific substantiation of individual its links. They will ensure the production of high-quality sub-base seeds for seed farms in the region and contribute to the expansion of the areas of highgeneration crops. Reducing the cost of growing seeds due to
... ng technologies will reduce the cost of produced seeds and increase its competitiveness. Particularly acute is the problem of high-quality seed material in the western Forest-Steppe, which covers a number of subzones (Forest-Steppe, Polissia, foothill and mountainous) with different soil differences, characterized by low natural fertility, increased acidity, leaching regime and a large amount of precipitation during formationcollection of grain. The studies were carried out in the seed production laboratory of the Institute of Agriculture of Carpathian region of NAAS during 2010-2014. The data on the study of the effect of bacterial preparations in the technology of growing winter wheat seeds for different plant nutrition are presented. It was established that in the soil and climatic conditions of the western Forest-Steppe with sufficient moisture supply of the soil sowing layer (0-10 cm) during the sowing of winter wheat, the effectiveness of the use of bacterial preparations of nitrogen-fixing and phosphoformobilizing action is high. The obtained experimental data suggest that the active soil microflora, due to the pre-sowing treatment of seeds with nitrogen-fixing (diazofit and agrobacteryn) and phosphoformobilizing (polimyxobacteryn) bacterial preparations, increased the field germination of seeds by 2,1-2,7 %. Under their influence, the growth and development of plants in the autumn period improved. An increase in the accumulation of sugars in tillering nodes (by 6,7-8,2 %) was observed, which ensured a high percentage of wintering of plants (by 1,7-6,1 %) compared to non-inoculum seeds. Bacterial preparations had a positive effect on the resistance of plants to major diseases, which contributed to an increase in seed yield by 0,21-0,23 t/ha for the use of agrobacteryn and diazopfit against the background of mineral nutrition N90Р90К90. The efficacy of polimyxobacteryn was higher against the background of N30P90K90 + N30 in the IV and VII stages of organogenesis, at which the increase was 0,59 t/ha, and slightly lower (0,44 t/ha)at a rate of P45 phosphorus application.