PJB-2018-997
IMPACT OF FARM MANAGEMENT PRACTICES ON DOWNY MILDEW DISEASE OF CUCUMBER IN HIGH TUNNELS
Sobia Chohan
Abstract
Downy mildew of cucumber caused by Pseudoperonospora cubensisis a serious threat for cucurbits production in tunnels. In current study, disease incidence and severity was recorded from nine high tunnel farms, located at Vehari District, Pakistan. The incidence was correlated with plant genotype, sowing time and four fungicides. Our results revealed that downy mildew incidence was 24-80% in high tunnels, which was significantly dependent on time of sowing and fungicides used. Sowing of crop in mid of November showed significant results in disease reduction. We also observed that the diseases was more sever at flowering stage. Among four used fungicides, Cabriotop and Antracol produced the best results against the disease respectively. Farms having less disease incidence showed 8-15 % higher yield. Any of fungicides was not to provide complete control over the disease. We conclude that use of resistant genotype, protectant fungicide (Cabriotop) and appropriate sowing time may reduce the disease incidence significantly.
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