Academic Research Journal of
Agricultural Science and Research
Academic Research Journal of Agricultural Science and Research
Vol. 3(9), pp. 251-257. September, 2015.
Full Length Research
Effects of Water Management Practices on Reducing Arsenic Toxicity in Rice: A Glass House Study
Accepted 17 July 2015
Some paddy soils in Bangladesh are contaminated with arsenic (As) due to irrigation of As-laden groundwater, which lead to elevated As in rice grains thus created a health hazard for the local communities. A pot experiment was carried out at the glass house of Bangladesh Agricultural University, Mymensingh during January-May 2009 using calcareous soil elevated with arsenic (22.5 mg kg-1) to find out an option of water management that will reduce the arsenic toxicity to rice plants. The rice variety tested was the BRRI dhan29. Three levels of arsenic was added @ 0, 10 and 20 mg As kg-1 to the soil with three water management options i.e. continuous 5 cm standing water, alternate wetting and drying (AWD) and continuous saturation level. Arsenic contamination reduced plant height, tillering, panicle length, grain panicle-1, 1000-grain weight, grain and straw yields. The grain yield of rice was reduced by 40% for 10 mg kg-1 As treatment and 82% due to 20 mg kg-1 As treatment. AWD irrigation treatment significantly increased plant height, panicle length and grains panicle-1 which ultimately increased grain and straw yields of rice over two other water management methods. The toxicity of arsenic contamination to rice was greatly reduced due to AWD water management compared to other water management options.
How to cite this article: Islam MR, Rana S, Jahiruddin M, Islam S (2015). Effects of Water Management Practices on Reducing Arsenic Toxicity in Rice: A Glass House Study. Acad. Res. J. Agri. Sci. Res. 3(9): 251-257.