Influence of seed hardening treatments on growth, gas exchange and yield parameters in black gram under drought condition

The present investigations were carried out to study the influence of various seed hardening treatments on growth and yield parameters in black gram under drought condition. The black gram cv. VBN 3 was imposed with various seed hardening treatments (i.e.,) MnSO₄@ 100 ppm, ZnSO₄@ 100ppm, Cobalt nitrate @ 1%, Sodium molybdate@ 100 ppm, KCl@ 100 ppm, Pungam leaf extract @ 1%, Prosopis leaf extract @ 1% and GA₃ @ 40 ppm. The above treated seeds along with control were evaluated for their seed quality parameters, growth, gas exchange and yield parameters under laboratory and drought field condition. The study revealed that seeds hardened with prosopis leaf extract @1% recorded higher seed yield, yield attributing characters and many seed quality characters as compared to other treatments and control under drought condition.