RESULTS OF RESEARCH ON SELECTION AND DEVELOPMENT OF TECHNOLOGY OF CULTIVATION OF VARIETIES OF BATATAS IN THE CONDITIONS OF SAMARKAND REGION

Abstract

This article presents the results of the study in the conditions of irrigated meadow-sierozem soils of the Zarafshan Valley during the cultivation of the selected varieties of sweet potatoes Khazina, Xar-Bay, Sochakinur, Japan, etc. with transparent film mulching, planting scheme 90x20x1 or 70x25x1 cm with a plant density of 55.5-57.1 thousand plants per hectare, irrigation regime during the growing season of plants according to pre-irrigation soil moisture 70-80% FMC (field moisture capacity), that is, with 12 irrigations according to scheme 5-7, application of mineral fertilizers at the rate of N200P160K100 kg/ha, the highest marketable (38.4- 56.4 t/ha) yield was ensured and the level of profitability 88.6-161.2%.