EFFECTIVENESS OF APPLYING THE POLISLAV GROWTH REGULATOR TO TREAT DIFFERENT MASSES OF POTATO SEEDING MATERIAL
The article presents the results of field experiments on the effect of the mass of planting material and growth regulator Polislav on growth, development, yield and quality of potatoes. Field experiments conducted in 2016-2018 years. on sod-podzolic sandy medium-cultivated soil. It has been established that with an increase in the mass of seed material, the number of stalks increases and the area of the leaf surface of potatoes increases per 1 bush and 1 ha. The growth regulator Polislav improves the development of potato plants and increases yields. The most economically advantageous in the Pskov region on sod-podzolic sandy loam soil was the cultivation of Breeze potato when processing plantings with the growth regulator Polislav, obtained from average planting tubers weighing 50-60 g. lowest cost and highest level of profitability.