Cause: Powdery mildew (fungal disease) forming white powdery layer on leaves.Treatment:Spray Wettable Sulphur 2 g/L or Hexaconazole 1 ml/LAlternative: Tebuconazole 1 ml/LRepeat spray at 5–7 day interval for 2–3 timesEnsure good air circulation and avoid excess humidityRemove heavily infected leaves to reduce spread@Kamlesh