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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 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - 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.2018.7(6): 572-577
DOI: https://doi.org/10.20546/ijcmas.2018.706.065


Mitigate Grain Arsenic Load of Summer Rice through Water Management
M.D. Bairagya1, C.K. Kundu1 and S. Sarkar2
1Department of Agronomy
2Department of Agro Meteorology, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, Nadia, West Bengal, India
*Corresponding author
Abstract:

High yield potentiality of summer rice motivates farmers in West Bengal to grow rice even in summer season. Summer rice receives few fold higher irrigation over other aerable crops. Farmers of this area irrigate 1300-1400 mm water for summer rice. In Nadia district of West-Bengal during summer season, the main source of irrigation water is ground water which contains high amount (0.098-0.345 mgL-1) of arsenic which is responsible for higher arsenic concentration in grain and straw. A field experiment was carried out during February to May, 2014 with six irrigation regimes. The irrigation regimes were I1- Continuous ponding, I2- Intermittent ponding, where irrigation was given two days after disappearance of ponded water, I3- Intermittent ponding, irrigation was given four days after disappearance of ponded water, I4- Saturation with SRI transplanting, I5- Intermittent ponding, irrigation was given two days after disappearance of ponded water, I6- Raised and sunken bed in a ratio of 1:2. Soil water stress in I2 and I4 were imposed during 15 to 40 days after transplanting, However, in case of I5 stress imposition stage was 65 to 80 DAT. Rest period for I2, I3, I4 and I5 regime field was kept under continuous ponding situation. Results showed that the grain (0.52 mgkg-1) and straw (3.05 mgkg-1) arsenic content were significantly less in I4 where (36.4%) less water was irrigate over I1. No significant yield reduction was found under I4 (6.47 Mg ha-1) as compare to I1 (6.64 Mg ha-1). Application of 100 mm and 380 mm less water respectively under I5 and I6 showed decrease in grain arsenic content by 36.7% and 26.6% respectively. Raise and sunken bed can effectively decrease grain arsenic content. But all three regimes significantly decrease grain yield. To reduce arsenic content in rice grain and straw without affecting yield, the field should be kept saturated during 15-40 days after transplanting.


Keywords: Rice, Irrigation regimes, Arsenic
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How to cite this article:

Bairagya, M.D., C.K. Kundu and Sarkar, S. 2018. Mitigate Grain Arsenic Load of Summer Rice through Water Management.Int.J.Curr.Microbiol.App.Sci. 7(6): 572-577. doi: https://doi.org/10.20546/ijcmas.2018.706.065