Winter-resistance and durability of strange grades of an apple to spring frosts in conditions of Forest-steppe

Abstract

The purpose. To determine winter-resistance and resistance to spring frosts of 14 strange grades of an apple of winter time of ripening in Forest-steppe of Ukraine. Methods. Field, comparative, generalization. Results. It Is fixed that the investigated grades are characterized by average and above average level of resistance to conditions of overwintering, and reproduc­tive organs of their trees have high resistance to spring frosts (-3, 1 °C). Conclusions. Grades of apple Vilmut, Ligol and Fiesta have winter-hardiness which is above average level, and reproductive organs of trees of grades Askold, Vilmut, Graph Ezzo, Golden Delicious, Rainders, Pinova, Eliza, Jonagored and Ligol have high resistance to spring frosts.