National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
A field experiment was carried out during kharif 2015 on clay loam soil at college farm, Rajendranagar, Hyderabad with an objective to study the response of rice to irrigation regimes and nitrogen levels under AWD method of water management. The experiment was laid out in a split plot design with three replications. Three irrigation regimes were taken as main plots and three nitrogen levels in subplots include S1: Transplanted low land rice with continuous submergence of 3cm up to panicle initiation stage and then 5cm up to maturity, S2: AWD water management of periodical flooding to 3 cm submergence depth from 15 DAT to maturity when the ponded water disappears on the ground surface, S3: AWD water management of periodical flooding of the field to 5cm submergence depth from 15 DAT to maturity when the ponded water level drops to 5 cm below ground level in the field tube and nitrogen levels viz., N1:120 kg ha-1, N2: 160 kg ha-1, N3: 200 kg ha-1). The results revealed that the combination continuous submergence of 3cm up to panicle initiation stage and then 5cm up to maturity and 200 kg N ha-1 was found to be the best for higher yield (6562 kg/ha) and water productivity compared to the other irrigation regimes and nitrogen levels under AWD method of water management.
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