Abstract
The purpose of the research is the biological and economic evaluation of a new variety of sour cherry Shelangovskaya in the conditions of the Republic of Tatarstan. Winter hardiness, productivity, the susceptibility of sour cherry varieties to coccomycosis, moniliosis, damage by aphids, and economic efficiency were evaluated according to the methodology of the All-Russian Research Institute of Fruit Crop Breeding. A comparative assessment of the biological and economic characteristics of the sour cherry varieties Krasa Tataria and Shelangovskaya showed that the new sour cherry variety surpasses the standard variety in productivity (8 kg), yield (5 t/ha), resistance to coccomycosis (1.9 points), moniliosis (1.5 points), flowering strength (4.6 points), self-fertility (24 %), fruit taste (4.2 points), profit from 1 ha of the garden (26.0 thousand rubles) and the level of profitability (13.1 %).
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