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The aim of the work is to study the influence of the watering regime of the soil during drip irrigation and mineral fertilizing on the yield and quality of seedlings of sweet cherry Vasilisa. The studies were carried out on light chestnut soil of the Volgograd oblast. The scheme of the experiment provided for studying the following options: the watering regime of the soil (factor A)—soil moisture in the 0...0.4-m layer was maintained throughout the vegetation by 80% HB; soil moisture in the 0...0.2-m layer was maintained at the beginning of the vegetation by 80% with an increase in the depth of the regulated layer to 0.4 m from the period of active growth to the ripening of seedlings; soil moisture in the 0...0.2 m layer was maintained at the beginning of the growing season by 80% with an increase in the depth of the soil layer regulated by irrigation from the period of active growth to 0.4 m, followed by a decrease in prewatering soil moisture during the ripening period in the 0.4 m layer to 70%; mineral fertilizing (factor B)—threefold N10P5 after 10 days at the beginning vegetation and twofold N10 after 14 days during active growth; threefold N10P5 after 10 days at the beginning of vegetation and twofold biostimulator Isabion, 2 L/ha after 14 days during active growth; threefold N10P5 after 10 days at the beginning of the growing season and threefold with Master, 5 kg/ha after 14 days during the period of active growth. The best parameters and the variety of seedlings were noted when maintaining soil moisture of at least 80% in a layer of 0...0.2 m at the beginning of the growing season and in the layer of 0...0.4 m during active growth with a decrease in prewatering humidity for the ripening of seedlings up to 70% against the background of fertilizing with Isabion and Master preparations, which provided an increase in the yield of first-class seedlings up to 93%, or by 23%, compared to the control irrigation and fertilizer options. [ABSTRACT FROM AUTHOR]

This paper discusses the effect of drip irrigation on the yield and quality of sweet cherry yearlings. The experiment involved three variants. In the control variant, the soil moisture content in the 0.4-m layer was maintained at a level not less than 80% of the field moisture capacity (FMC) throughout the entire growing season. In the second variant, the soil moisture was maintained at 80% of the FMC in the 0.2-m layer until the beginning of the active bole growth phase with subsequent extension of the wetted layer to 0.4 m. In the third variant, the water regime differentiated by layers (similar to the one in the second variant) was maintained until the end of the active seedling growth phase; then the preirrigation moisture level was reduced to 70% of the FMC. Watering rates required to maintain the soil moisture level at 80% of the FMC were 50 m3/ha for the 0.2-m layer and 100 m3/ha for the 0.4-m layer. A watering rate of 160 m3/ha was required to maintain the soil moisture level at 70% of the FMC in the 0.4-m layer. The seasonal irrigation requirements were 1675, 1763, and 1577 m3/ha, respectively. The best values of such parameters as central bole height, root collar diameter, and share of class one seedlings were registered in the second variant; they exceeded the control values by 50 mm, 4.3 mm, and 6%, respectively. The third variant was the most water-saving option: the irrigation water costs were lower by 110 m3/ha in comparison with the control and by 186 m3/ha in comparison with the second variant. [ABSTRACT FROM AUTHOR]