Abstract
Liquid humic biological means are widely used in plant growing for seed treatment, for root and foliar fertilizing of agricultural plants. In All-Russian Research Institute of Reclaimed Lands developed a liquid humic biological means, whose composition is characterized by the presence of humic acids - not less than 5 g/l, potassium humates - not less than 20 g/l, a set of macro- and microelements, pH - not more than 10. The purpose of the work performed was to study the effect of liquid humic biological means on the growth and development of potatoes as a result of processing tubers before planting. The results of laboratory and field experiments conducted in 2017-2018 are presented. According to the results of a laboratory experiment, the most effective 10% concentration of the working solution of a humic biological means for the treatment of potato tubers before planting was determined. In the small-scale experiment with potatoes, three concentrations (0,5%; 2,0% and 10%) of the humic biological means were used to treat seed. Potatoes were grown on the background of organic fertilizer and without background. When growing potatoes without the main background, a 10% concentration of the biological means promoted the most active growth and development of the potato, which was consistent with the data from the laboratory experiment. At the same time, the yield increase was 10,5% relative to the control without fertilizers. When cultivating potatoes against the background of the main organic fertilizer, the maximum yield was obtained by treating the tubers with a minimum 0,5% concentration of humic biological means - the gain was 14,3% relative to the background. The increase in yield was formed primarily due to the increase in the number of tubers in the bush, as well as the mass of commodity tubers. Statistical evaluation of the quality indicators of potato tubers did not reveal significant changes from the treatment of planting material with humic biological means solutions.
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