The increased physiological performance was observed in terms of increased germination percentage, shoot length, root length, dry matter production and vigour index; accompanied with earlier germination in terms of days to 50% germination and days to maximum germination. Increased field emergence potential was also observed in the seeds primed with 1% KH2PO4 for 6 hrs. However, more pronounced effect of seed priming with 1% KH2PO4 for 6 hrs was observed in aged seeds than in fresh seeds.