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Plant growth regulators, which helps to activate the initial growth and accelerate the development of plants, stimulate tuber formation, increase the resistance of potatoes to unfavorable soil and climatic conditions, increase the yield and biochemical quality indicators of potato tubers, have great opportunities for increasing potato productivity. Research was carried out on the development of a technological system for regulating the growth and development of potatoes through the complex use of growth regulators in combination with microbiological preparations in the highlands of the KBR. The positive effect of growth regulators on the development of the assimilation surface and root system of potatoes was revealed. Growth regulators have a positive effect on the creation of a pigment background in potato leaves. At the same time, a significant increase in chlorophyll z, chlorophyll b and carotenoids is observed when using Agrovin Micro Agrovin Mg-Zn-B and is equal to 121.4, respectively; 46.4 and 46 mg%, up 21.4; 23.2 and 31.0% above the control variant. The use of PP has a prolonged effect on the growth, development and biochemical composition of potato tubers. The complex use of the drug significantly increases the number, size and weight of tubers, which allows to increase the yield by 30%, improve the biochemical composition of tubers in terms of dry matter and starch content. The use of growth regulators promotes the output of seed fraction tubers by 56% more than the control variant.

Influence of growth regulators on yield, quality and preservation of potato stubs in the mountain zone of the Kabardino-Balkaria Republic