Soak the blackgram seeds in 1/3 volume of 100 ppm ZnSO4 (1:0.3 volume of Seed Solution ratio) for 3 with intermittent stirring for uniform soaking. Dry back the seeds to original moisture content (8 - 9%) under shade
(OR)
Coat the seeds with TNAU Vidhai Amirtham @ 10 ml/kg of seeds
