Effectiveness of the preparation Rapsol Extra® against powdery mildew of greenhouse cucumber
Studied the effectiveness of an improved form of preparation Rapsol - Rapsol Extra ® (producer - Elite Agrosistems Ltd., Voskresensk city) based on the rape seed oil (Brassica napus) compared with fungicides Topaz and Strobi against powdery mildew of cucumber. In greenhouses dosage Rapsola Extra 7-10 l / ha provided almost complete suppression of the causative agent - Erysiphe cichoracearum. It was noted as visually on disease symptoms, and at the microscope - plasmolysis of conidia and conidial chains had been deduced.