AZOS-4 rootstock is a grape variety developed within regional research projects and intended for cultivation in the Black Sea zone of Krasnodar Krai. It is distinguished by high resistance to phylloxera and chlorosis, as well as a short vegetative period, which allows for quick completion of the growth cycle and accelerates the harvest process.
The leaves are of medium size, five-lobed, dark green with a metallic sheen. The upper leaf surface is almost entire, slightly reticulate, with wavy edges and a funnel shape. Main veins are green on top and pinkish-cherry underneath. Notches on the upper part are barely visible, teeth are triangular with an elongated apex, and the petiolar notch is open and rounded with an acute bottom.
The bush form is compact, which facilitates agricultural operations: canes grow vertically, the vine is brown, and suckers are weak. The vine causes early and complete ripening, while sucker development is limited, which simplifies plant growth management. When grafted, the rootstock combines well with many European grape varieties, ensuring a high yield of first-class seedlings. As a result, growing AZOS-4 allows obtaining up to 120–135 thousand cuttings per hectare and ensures a stable yield in the Black Sea zone.
