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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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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

Int.J.Curr.Microbiol.App.Sci.2017.6(2): 909-921
DOI: http://dx.doi.org/10.20546/ijcmas.2017.602.102


Dynamics of Nitrogen Uptake under Alternate Wetting and Drying Method of Water Management in Low Land Rice (Oryza sativa)
Kishor Mote1*, V. Praveen Rao2, K. Avil Kumar2, V. Ramulu2 and M. Uma Devi2
1Central Coffee Research Institute, Chikmagaluru -577117, Karnataka, India
2Water Technology Centre, Professor Jaysankar Telangana State Agriculture University, Hyderabad-500030, India
3Department of Crop Physiology, Professor Jaysankar Telangana State Agriculture University, Hyderabad-500030, India
*Corresponding author
Abstract:

A field study was conducted entitled with “Standardization of Alternate Wetting and Drying (AWD) method of water management in low land rice (Oryza sativa (L.) for up scaling in command outlets”. The treatments consisted of continuous submergence throughout the crop growing season besides AWD irrigation regimes with two pond water depths of 3 and 5 cm and drop in pond water levels in field water tube below ground level to 5, 10 and 15 cm depth. The eight treatments were laid out in randomized block design with three replications. Continuous Submergence (CS) registered higher nitrogen uptake 20.78, 45.52, 64.05 and 85.36 kg ha-1 at 30, 60, 90 DAT and at harvest, respectively which resulted it recorded significantly higher SPAD chlorophyll meter (SCMR) readings  (42.74, 42.78) and Leaf Color Chart  (LCC) ratings (3.83, 3.94) over rest of the irrigation regimes except that it was on par with Flooding to a water depth of 3-cm between 15 DAT to PM as and when pond water level drops to 5-cm Below ground level (BGL) in field water tube (39.40, 39.59), (3.59, 3.51),  Flooding to a water depth of 5-cm between 15 DAT to PM as and when pond water level drops to 5-cm BGL in field water tube (41.21, 41.78), (3.73, 3.74) and Flooding to a water depth of 5-cm between 15 DAT to PM as and when pond water level drops to 10-cm BGL in field water tube (40.04, 40.83), (3.69, 3.52).


Keywords: SCMR readings, LCC ratings, Nitrogen uptake, Alternate wetting and drying, Lowland rice, Field water tube
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How to cite this article:

Kishor Mote, V. Praveen Rao, K. Avil Kumar, V. Ramulu and Uma Devi, M. 2017. Dynamics of Nitrogen Uptake under Alternate Wetting and Drying Method of Water Management in Low Land Rice (Oryza sativa).Int.J.Curr.Microbiol.App.Sci. 6(2): 909-921. doi: http://dx.doi.org/10.20546/ijcmas.2017.602.102