Elements of integrated protection of cherries in the Western Ukrainian Forest-Steppe Province
Abstract
Goal. Study of the effectiveness of the fungicide Signum, WG (pyraclostrobin, 67 g/kg + boscalid, 267 g/kg) for the protection of cherries against common pathogenic micromycetes: clasterosporiosis Clasterosporium carpophilum Aderh., moniliosis Monilia cinerea Bon., and coccomycosis Coccomyces hiemalis Higgins in the Western Ukrainian Forest-Steppe Province.
Methods. The study was conducted in 2022—2023 in cherry plantations at the Ukrainian Research Station of Plant Quarantine of the Institute of Plant Protection of NAAS, using field methods (study of the dynamics of the development of cherry diseases; assessment of the effectiveness of chemical crop protection) and laboratory methods (phytopathological analysis).
Results. A cold spring during the research years, with excess precipitation and low April temperatures, contributed to cherry infection and the development of diseases during the growing season. Diseases often reached epiphytotic levels and required active protection against pathogens. To treat trees, the fungicide Signum, WG was applied at the rates of 12 g and 8 g per 10 l of water. The fungicide Horus 75 WG (cyprodinil, 750 g/kg) was used as a standard — 3 ml per 10 l of water. The product showed high efficiency against the indicated diseases. The technical efficiency of the fungicide Signum, WG against clasterosporiosis was 77.2—82.3%; against moniliosis — 83.5—89.9%; against coccomycosis — 86.0—89.1%. The damage to berries in the control variant at the time of fruit harvesting was: clasterosporiosis — 6.2%; moniliosis — 12.7%; coccomycosis — 12.8%.
Conclusions. Application of the fungicide Signum, WG in the research area against clasterosporiosis (Clasterosporium carpophilum (Lev.) Aderh.), moniliosis (Monilia cinerea Pers.), and coccomycosis (Coccomyces hiemalis Higgins) provided reliable protection of cherry plantations, allowing to obtain an additional crop yield of 27.6%.
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