Acid Treatment

In acid treatment, concentrated sulphuric acid (85%) was used.Weighed quantity of seeds are taken in acid resistant containers like plastic or porcelain containers and acid was added slowly while stirring with a wooden rod. Stirring was continued for 30 minutes. At the end of the treatment processes the outer coat is removed. The seeds are now put into a vessel containing cold water. The seeds are washed 3 to 4 times till they are free of acid. Washed seeds are air dried and used for sowing.Acid treated and dried seeds can be stored for about two weeks.