Potatoes performance in rainfed conditions on the chernozems of the Gedabek district of Azerbaijan

The results of research for the period 2014-2017 are presented. Experimental work was carried out in the village of Chaldash, Gedabek district of Azerbaijan. The yield of potatoes of the Sevinj variety was determined depending on the number of inorganic fertilizers applied to the soil. Soil samples were taken from depths of 0-20 and 20-40 cm. Absorbed ammonium nitrogen (N/NH4) and nitrate nitrogen (N/NO3) were determined. Soil samples were taken at 3 stages of plant development: budding, flowering and potato ripening. Conducted studies show that yields have increased noticeably in options where mineral and organic fertilizers are applied in different rates and proportions. The highest results were obtained in the variant N93P98K126+Gyps163+20 tons of manure.