The strawberry yield and the contents of the main macronutrients in the soil of plantations with different fertilizer and drip irrigation

Abstract

The purpose of research was to determine the optimal method of applying mineral fertilizers with drip irrigation in strawberry plantations and the level of available forms of nitrogen, phosphorus, and potassium in sod-podzolic mediumloam soil. The studies were carried out on strawberries of Honeyoe and Troitskaya varieties, the experiment was two-factor, the replicates were isolated. The determination of NPK in soil and pH were performed according to the generally accepted recommendations for sod-podzolic soils. Weather conditions during the years of research were sufficiently diverse and determined the irrigation rates of plantings. The results showed that the maximum yield of strawberries (13.3 t / ha) is possible with combined fertilization in reserve and with fertigation, but with fertigation, the yield is stable and varies least of all. The highest content of alkaline hydrolysable-nitrogen and plant-available potassium in the average over the years of research was observed in the variant with fertilization in reserve. It has been established that the most optimal way to fertilize strawberries with drip irrigation is a combined application. Drip irrigation accelerates the mineralization of organic nitrogen. Doses of mineral fertilizers should be increased with the age of plantings, while taking into account the level of basic macronutrients in the soil.