Store the seeds in airtight containers. Soak the seeds in 100 ppm GA3 for 16 hours or in 2% fresh leaf extract of arappu or 1% pungam leaf extract or pellet the seeds with arappu leaf powder.
Optimum depth of sowing
Sow seeds at 1 cm depth for better germination and seedling growth.
BSS 6 wire mesh sieve.
Dry seeds to 8-10% moisture and treat with halogen mixture containing CaOCl2, CaCO3 and arappu leaf powder (at 5:4:1 ratio) @ 3 g / kg and pack in cloth bag to maintain viability upto 5 months.
Invigoration of old seeds
Stored seeds can be invigorated by soaking them in dilute solution of disodium
phosphate (10-4 M) adopting 1:8 seed to solution ratio for 4 hours, followed by drying back to
original moisture content