Abstract
There is currently a lack of capacity in the Russian nursery-garden, as a result of which a significant part of the planting material comes from abroad. Drip irrigation is one of the types of resource-saving technologies that can intensify agricultural production, including in the field of growing planting stock for gardening. The goal of the work was to study the effect of drip irrigation on the formation of plum seedlings grown in a fruit nursery under the conditions of the central Nonblack Soil zone of Russia. Field studies were conducted on the territory of the educational-experimental farm of the Michurinsky Garden fruit-growing laboratory of the Russian State Agrarian University–Moscow Timiryazev Agricultural Academy. A two-factor field experiment was laid in spring 2018. The first factor is the drip irrigation mode; the second factor is the plum varieties (Mashenka and Utro) grafted on cherry plum stock. The results of the experiment show that an irrigation mode with maintaining soil moisture in the range of 80–100% of the lowest moisture capacity with a soaking depth of 30 cm in the first year and 40 cm in the second year is recommended to more rationally use irrigation water and to obtain high-quality plum planting material in the nursery. This irrigation mode was noted to result in the maximum values of the stem diameter, height of seedlings, and leaf surface area.
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