Why are my Langra mango panicles drying and turning black at flowering?

Blackening and drying of mango panicles in cloudy, humid weather is typically anthracnose blossom blight, often together with powdery mildew (which shows whitish powder on the panicle before they dry). Both attack panicles in overcast, humid conditions and destroy the crop before fruit set. Manage with a preventive spray schedule: at panicle emergence and again at full bloom and pea stage, alternate recommended fungicides for anthracnose with one effective against powdery mildew such as a sulphur or recommended product, following label dose and pre-harvest interval. Avoid spraying open flowers in the hottest part of the day to protect pollinators; spray early morning or late evening. Also control mango hopper at the same time because hopper honeydew encourages sooty mould and worsens panicle health. Open canopy and orchard sanitation reduce inoculum.