Nitrogen Productivity Rate of CORH-2 And ADTRH-1 Rice Hybrids Under SRI Cultivation

Field experiments were conducted to bringout the impact of modified crop management options viz., modified planting/direct seeding, limited irrigation, conoweeding and green manuring over conventional planting, irrigation, weeding and nutritional strategies on the nitrogen productivity of rice hybrids CORH-2 and ADTRH-1. Planting of younger seedlings/direct seeding recorded higher nitrogen productivity over conventional planting during active tillering (AT) as well as panicle initiation (PI) in CORH-2 and from active tillering to 50% flowering in ADTRH-1. Irrigation methods lowered nitrogen productivity in ADTRH-1. Weeding and green manuring did not have much influence on nitrogen productivity of rice hybrids.