Effect of Pisum sativum L. seed treatment with the complex of microbiological preparation on the plants’ growth and development under direct sowing

The goal of the research is to study the effect of Pisum sativum L. seeds treatment before sowing with a complex of microbiological preparation, in comparison with a chemical treatment, on the parameters of plants growth, product quality, and yield, against the background of the system of agriculture without soil tillage. The research was conducted in 2016-2018 in the zone of Central Steppe of Crimea. Trial establishment and researches were carried out in accordance with the generally common methods of field experiments in land husbandry and plant growing. In 2016, the symbiosis of Pisum sativum L plants and the microbial community had a significant impact on the number of beans per plant: the control was 7.6 pieces on 1 plant, and under the influence of complex microbial preparation is 8.6 units per 1 plant (LSD05 – 0,92). The weight of grain from 1 plant was significantly higher by 0.5 g on the variant with inoculation. In 2017 on plant height there is a slight increase in growth when treated with the preparation by 4.4 cm (LSD05 – 5,03). The same thing happens with the number of beans of 8.2 and 8.6 units on the same plant that shows at LSD05 – 1.59, the accuracy increase of this parameter at 0.4 units per plant in the variant with inoculation. Severe weather conditions during the vegetation of Pisum sativum L. in 2018 contributed to the fact that the microbial preparation studied by us practically did not affect the studied indicators of growth and productivity.