Vol. 12, Issue 8 (2023)

Author(s):
Revathi P, Srinivas B, Chandrashakar K and Venkataramana M

Abstract:
The field study was conducted at the Regional Agricultural Research Station, Jagtial on the standardization of Nitrogen levels and their schedules in a dry-converted wet rice system. The research study was carried out in split plot design with 3 nitrogen levels (N₁-120 kg ha^-1, N₂-140 kg ha^-1, N₃-160 kg ha^-1) in main plots and 4 nitrogen schedulings (S₁-Basal (0 Seedling stage)- 25 DAS (1/4 tillering stage)-50 DAS (1/2 Panicle initiation stage)- 80 DAS (1/4, Heading stage), S₂- Basal (0)- 25 DAS (1/4)-50 DAS (1/4)- 80 DAS (1/2), S₃- Basal (1/4)- 25 DAS (1/4)-50 DAS (1/4)- 80 DAS (1/4), S₄- Basal (1/5)- 25 DAS (1/5)-50 DAS (2/5)- 80 DAS (1/5)) in subplots. The experiment results revealed that the grain yield was higher at the nitrogen levels of 140 (N_{2 –} 6572 & 7082 kg ha^-1 2019; 2020) and 160 (N_{3 -} 7303 kg ha^-1) kg ha^-1, while among the nitrogen schedules grain yield was higher under S₄ (7171 &7284 kg ha^-1 2019; 2020) which was on par with S₃ (6327&6683 kg ha^-1 2019; 2020).