Powdery mildew
Common Name
Phyllactina spp. / Leveillula spp. / Erysiphe spp. / Uncinula spp. / Blumeria spp. / Golovinomyces spp. / Podosphaera spp. / Sphaerotheca spp.
Scientific Name
Issue
Disease
Causes
It is more prevalent in dry weather when humidity is high and nights are cool. The fungus survives from season to season in dormant buds. The flowering is the most critical stage for infection.
Prevention
Plant in sunny areas as much as possible, provide good air circulation Plant resistant varieties. or example, mango varieties vary in susceptibility to powdery mildew: 'Apple', 'Alphonse', 'Boribo', 'Kent', 'Ngowe' and 'Zill' are highly susceptible; 'Hade
Control
Overhead sprinking may help reduce powdery mildew because spores are washed off the plant Sprays of powdered kelp, potassium bicarbonate or sulphur based products will often control the disease.