The Use of Complex Biopreparations in Cultivation of Melons on the Irrigated Lands of the Northern Caspian Lands

Results on cultivation of melons with use of microbiological preparations are presented. Optimal options have been identified that contribute to the formation of high yield of the studied crops. Introduction. The main areas under melon crops are concentrated mainly in the South-East of the Russian Federation, due to climatic conditions. For the first time in the conditions of light chestnut soil on the land use territory of the Caspian Agricultural Scientific Federal Scientific Center of the Russian Academy of Sciences during 2019-2020. a study was carried out on the cultivation of various varieties of watermelon and various varieties of melon using complex of biological products (CBP) in order to obtain high and stable yields with drip irrigation. Materials and methods. The study included 4 varieties of watermelon and 4 varieties of melon. The research material was complex of biological products: CBC (cyanobacterial consortium); CBP (10702 + F + P); Biohumus. (Federal State Budget Institution of Science «Scientific Research Institute of Agriculture of Crimea») The economically valuable traits of the studied varieties cultivated in the arid zone of the Astrakhan region were evaluated. Results and conclusion. As a result of the conducted studies of various varieties and hybrids of the studied crops (watermelon and melon), on average, for two years of study (2019-2020), it was possible to single out the watermelon cultivar Peasant and the melon hybrid Alice F1, which showed the maximum yield level. The highest yield of the watermelon variety was obtained using the option Biohumus + CBP st and amounted to 98.3 t / ha with an average fruit weight of 6.8 kg. For other processing options for the Krestyanin variety, the yield indicators changed slightly. In the melon hybrid Alisa F1, the maximum yield was achieved using a similar version of Biohumus + CBP st. The biological yield was equal to 72.6 t / ha with an average fruit weight of 4.7 kg. Marketability with such indicators was 98%. Presowing soaking of seeds in a solution of Biohumus + CBP st contributed to a significant increase in yield.