Grape downy mildew control, angoor Plasmopara fungicide rainy season Nashik
How do I control downy mildew in grapes (angoor)?
VVishal Deshmukh10mo ago · 308 views
5 Answers
🌾Farmer.in Krishi TeamExpert ✓9mo ago
Downy mildew is the most serious grape disease in humid, rainy conditions and shows as oily yellow patches on the upper leaf surface with white downy growth underneath, and it can destroy flowers and bunches quickly. Manage it by improving canopy aeration through proper pruning and shoot positioning, ensuring good drainage, and avoiding excess nitrogen. Begin protective fungicide sprays before predicted rain or high humidity and switch to systemic or contact products in a planned rotation to prevent resistance, following recommended intervals. Strict spray timing relative to rain events is the key. Use only approved fungicides at label dose and follow the disease forecast advisories issued by the National Research Centre for Grapes, Pune.
VVishal Deshmukh9mo ago
Downy mildew can finish a bunch in a few days during cloudy wet weather here. I keep my canopy open and spray before the rain comes, not after. Rotating the chemicals matters or it stops working.
RRohit Khairnar8mo ago
I started following the NRC Grapes disease-forecast advisories and weather alerts to time my protective sprays. Spraying ahead of a predicted humid spell, rather than reacting after I see the oily spots, has saved my bunches more than once.
AAmol Sonawane7mo ago
If your grapes are export-bound, be very careful which systemic you use near harvest and respect the PHI. Some effective fungicides have residue limits that buyers will not accept. We plan the rotation so the strong systemics are used early and only label-safe options come close to harvest.
PPrashant Wagh6mo ago
Shoot positioning and removing the lower leaves around the bunch zone improved air flow on my vines and the mildew pressure dropped. A dense shaded canopy stays wet for hours after dew and that is exactly what the disease wants.