How to control white rust disease in mustard crops

This is a fungal disease, which causes a lot of damage in mustard crops.
In this disease, white colored blisters are seen on the lower surface of the leaves.
After some time these blisters turn into white powder.
Due to this, the process of making food through the leaves is greatly affected.
For prevention of this disease use Hexaconazole 5% SC @ 400 ml/acre or Tebuconazole 10% + sulphur 65% WG @ 500 gram/acre
As a biological treatment use Pseudomonas Fluorescens @ 250 gram/acre