Assessment of the resistance of strawberry varieties to major diseases in the south of Sakhalin

The article presents the main diseases of garden strawberries in the monsoon climate of the island. Sakhalin - gray rot and white spot. Observations were carried out from 2017 to 2020 in the experimental nursery of the Federal State Budgetary Scientific Institution “Sakhalin Research Institute of Agriculture”. The purpose of the research was to assess the introduced varieties of garden strawberry for resistance to diseases with the selection of the most resistant varieties for its further introduction. The objects of study were 21 varieties of garden strawberry As a result of the research, varieties that are complexly resistant to white spot and gray rot were identified: Amulet, Deroyyal, El’santa. Deroyyal, El’santa, Figaro, Sal’sa, Tago. Varieties with resistance to white spot are distinguished: Tanyusha, Rumba, Evi, Amulet, Deroyyal, El’santa, Cheburashka. Varieties with weak, 1 point susceptibility to one of the diseases - Rumba, Evi, Cheburashka, Kleri, Podarok sud’by, Vima Zanta, Figaro, Tago, Sal’sa The most affected strawberry varieties to gray rot disease were noted in 2020. The most favorable for the development of white spot disease developed in 2018, 2020, associated with the temperature regime of the air in these years, where the sum of effective temperatures was 781 ° C and 830 ° C. and farms