Apple rootstocks with clone number 62223 are dwarf varieties developed at the Michurin State Agrarian University. During research conducted in 2020–2021, their agronomic-biological characteristics were evaluated at a vertical mother orchard with a carbonate coating, using a planting scheme of 0.2 × 0.5 m.
Phenological observations showed that all studied rootstocks successfully adapted to seasonal plant development rhythms and formed layers under protected soil conditions. The highest layers were formed by bushes of rootstocks 62-396 and 62-223, while forms 67-5(32), 71-3-150, and 70-6-8 exhibited weak branching (1.0–1.2 points). The root system of all layers was well-developed; average root length ranged from 21.9 cm to 38.1 cm.
The yield of first-grade layers exceeded 80% for clones 63-396, 62-223, 54-118, and 64-143. Second-grade yield ranged from 1.7% (62-396) to 34.5% (Malish Budagovsky). Non-standard layers were minimal (<1%) for forms 62-396 and 57-490. These data indicate high productivity and stable development of clone rootstocks 62223 under protected soil conditions.
