FIELD: fungicides. SUBSTANCE: invention describes the novel fungicide composition containing metalaxyl or benalaxyl where content of R-enantiomer is above 70 wt.% and a carrier that is acceptable for this fungicide. Invention describes method of control or prevention of damage by oomycetes by treatment of plants, their parts or sites subjected for damage using this composition. EFFECT: improved decomposition of composition in soil. 14 cl, 2 dwg, 4 tbl, 3 ex
