How to control powdery mildew in bitter gourd crops

Usually this disease occurs on bitter gourd leaves, which affects the leaf’s lower and upper part.
This disease can be identified by the formation of yellow to white colored powder on the upper and lower surface of bitter gourd leaves.
To managing this use, Azoxystrobin 11%+Tebuconazole 18.3% SC @ 300 ml /acre or Azoxystrobin @ 300 ml/acre
Spray Trichoderma viride @ 500 gram/acre+Pseudomonas fluorescens @ 250 gram/acre as a biological treatment