Harvesting and threshing :
- Early harvesting cause difficult in operating combine harvester , resulting in mechanical damage of the seed.
- Late harvesting cause loss due to shattering and lodging.
- Physiological maturity : maximum dry matter accumulation in the seed , 80% grains in the panicle are matured .
- Harvesting maturity : Moisture content of the seed is reduced .90% of the grains in the panicle are matured.
- Harvestable maturity is best stage for harvesting crop for grain purpose.
