J. C. Luthra and his associates developed the solar heat treatment of wheat seeds for the control of

Answer: Option B

J. C. Luthra and his associates developed the solar heat treatment of wheat seeds for the control of Loose smut.
This treatment is also termed Luthra's solar energy treatment. In this, The seeds are soaked in cold water for 4 hours in the forenoon on a bright summer day followed by spreading and drying the seeds in the hot sun for four hours in the afternoon.
It is proved to be very effective against loose smut of wheat and covered smut of barley.