SOYBEAN GROWING USING ORGANIC HUMIC FERTILIZER TUMAT ON IRRIGATED MEADOW SOILS IN ANDIJAN REGION

The article presents experimental data on the study of the impact of organic humic fertilizer "Tumat" on productivity of soybeans in the conditions of irrigated meadow soils of the Asaka district of the Andijan region. Meadow soils are characterized by a low concentration of humus, mobile forms of phosphorus and potassium, they are slightly saline, the granulometric composition is medium loamy, the depth of groundwater is 2-3 m. Liquid humic fertilizer "Tumat" is produced from brown coal (leonardite and lignite) and specially prepared water. Contains salts of humic acids, fulvic acids, amino acids, organic salts, organic acids, natural auxins, cytokinins and a number of essential macro- and microelements in a form which is available to plants. The working solution of humic fertilizer was used for pre-sowing treatment of seeds and foliar feeding of plants in the initial period of vegetation in the phases of formation of three true leaves and branching. Pre-sowing treatment increases stress resistance and seed germination. Double foliar feeding of soybean improves soil nutritional regime, increases growth and development, increases the yield of soybean grain from 50 to 90 % with combined use of a bacterial preparation on the background of mineral fertilizers. The use of Tumat fertilizer is considered as an environmentally friendly and cost-effective way to increase crop productivity, contributing to a more complete realization of natural potential. According to the results of production tests, the organic humic fertilizer "Tumat" is recommended for widespread use in the irrigated areas of Uzbekistan in growing leguminous crops.

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