Grain yield, growth response, and water use efficiency of direct wet-seeded rice as affected by nitrogen rates under alternate wetting and drying irrigation system

The present investigation aimed to determine the effectiveness of different nitrogen (N) rates on grain yield, growth, and water use efficiencies of direct wet-seeded rice and to create a relationship of N rates with growth parameters and dry matter production at different stages. The experiments co...

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Bibliographic Details
Published in:Communications in Soil Science and Plant Analysis 2018-11, Vol.49 (20), p.2527-2545
Main Authors: Bhuiyan, Khairul Alam, Bhuiya, Sultan Uddin, Saleque, M.A., Khatun, Amina
Format: Article
Language:English
Subjects:
Alternate wetting and drying (AWD) irrigation
Crop growth
Crop yield
direct wet-seeded rice
Dry matter
Drying
Duration
Grain
Growth rate
growth response and grain yield
Irrigation systems
Leaf area
Leaf area index
Nitrogen
Nitrogen management
Plant growth
Rice
Water use
Water use efficiency
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Summary:The present investigation aimed to determine the effectiveness of different nitrogen (N) rates on grain yield, growth, and water use efficiencies of direct wet-seeded rice and to create a relationship of N rates with growth parameters and dry matter production at different stages. The experiments compared six rates of nitrogen (0, 40,80,120,160, and 200 kg ha -1 N) replicated thrice in randomized complete block design in two conjunctive years of 2009-2010 and 2010-2011 at Bangladesh Rice Research Institute farm, Gazipur.The highest grain yield of 7.85 and 7.22 t ha −1 was observed in N 200  treatment in 2009-2010 and 2010-2011, respectively. The relationship (R 2 ) of total dry matter with leaf area index , leaf area duration, and crop growth rate indicated strong association during booting stage to achieved maximum dry matter during harvest. Water use efficiency varied 87-91% in different N levels.
ISSN:0010-3624
1532-2416
1532-4133
DOI:10.1080/00103624.2018.1526942