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- Title
Effect of Urease and Nitrification Inhibitors on Productivity and Profitability of Aerobic Rice during Summer Season.
- Authors
NAGANGOUDAR, MAHANTESH B.; JAYADEVA, H. M.; LALITHA, B. S.; HANUMANTHAPPA, D. C.; KADALLI, G. G.; UMASHANKAR, N.
- Abstract
A two years field experiment was conducted at the Agronomy field unit, Zonal Agricultural Research Station, UAS-B, GKVK, Bengaluru during summer, 2022 and 2023 to assess the efficacy of urease and nitrification inhibitors on productivity and profitability of aerobic rice. The experiment was laid out in Randomized Complete Block Design with nine treatments (Urea, Urea + HQ @ 4000 mg kg-1 urea, Urea + HQ @ 8000 mg kg-1 urea, Urea + HQ @ 12000 mg kg-1 urea, Urea + DCD @ 4000 mg kg-1 urea, Urea + DCD @ 8000 mg kg-1 urea, Urea + DCD @ 12000 mg kg-1 urea, Neem coated urea and Absolute control), each replicated thrice. Significantly higher plant height (72.27 cm), number of tillers plant-1 (22.83), dry matter production (53.70 g plant-1), number of green leaves plant-1 (85.03) and leaf area (2108 cm² plant-1) at 90 DAS and panicle length (22.14 cm), grain weight (2.93 g), grain yield (4717 kg ha-1), straw yield (5796 kg ha-1) and gross returns (Rs.106845 ha-1) were recorded with application of Urea + HQ @ 12000 mg kg-1 urea compared to other treatments on pooled basis. However, application of neem coated urea found to be more economical with significantly higher net returns (Rs.55662 ha-1) and B:C (2.28) compared to other treatments.
- Subjects
NITRIFICATION inhibitors; SUMMER; UREASE; HYBRID rice; RICE; FIELD research
- Publication
Mysore Journal of Agricultural Sciences, 2024, Vol 58, Issue 1, p166
- ISSN
0047-8539
- Publication type
Article