INFLUENCE OF NORMS AND METHODS OF PLANT GROWTH REGULATOR VERMYSTYM APPLICATION ON QUALITY INDICATORS AND PRODUCTIVITY OF POTATO

Abstract

The article investigates the effect of different norms and methods of plant growth regulator Vermystym application on plant height, number of stems in a bush, stand density, yield and quality of two varieties of potato tubers. It is found that pre-planting cultivation of potato tubers with Vermystym in a dose of 8 l/t and double spraying of potato tops of mid-season potato variety Roko and middle-late potato variety Picasso in periods of bud-formation and blooming at a rate of 14l/ha increased the number of stems, average potato weight yield, and the content of dry matter and starch. According to the conducted research, an environmentally-friendly potato production gain method is developed.