Impact of Water Management on the Arsenic Content of Rice Grain and Cultivated Soil in an Arsenic Contaminated Area of Bangladesh

A study was conducted in an arsenic (As) contaminated area of Faridpur, Bangladesh with a view to observe the effect of reduced irrigation on the As concentration of rice grain. Rice yield of BRRI dhan28 was found to be slightly higher in alternate wetting and drying (AWD) method than in continuous standing water (CSW) method of irrigation although not significant. The highest grain As conc. (0.65 mg/kg) was observed in the plots irrigated with ground water by CSW method. Significant reduction in grain As conc. was observed in AWD plots irrigated with contaminated ground water. Partial aeration of soil in AWD may have hindered the entrance of water As to rice roots. No significant reduction of soil As conc. was observed due to the application of AWD method. Reduction in grain As in AWD method implies that this technique can be devised as tool for mitigation of As in the As contaminated areas for irrigation of rice.DOI: http://dx.doi.org/10.3329/jesnr.v7i2.22202 J. Environ. Sci. & Natural Resources, 7(2): 43-46 2014

Download Full-text

WATER MANAGEMENT AND METHANE EMISSION FROM RICE CULTIVATION: A CASE STUDY IN AN GIANG PROVINCE, VIET NAM

Vietnam Journal of Science and Technology ◽

10.15625/2525-2518/54/2a/11916 ◽

2018 ◽

Vol 54 (2A) ◽

pp. 91

Author(s):

Duong Mai Linh

Keyword(s):

Water Management ◽

Global Warming ◽

Rice Yield ◽

Soil Surface ◽

Water Levels ◽

Rice Cultivation ◽

Viet Nam ◽

Ch4 Emission ◽

Wetting And Drying

Rice cultivation causes the emission of CH4 consequenced to the global warming. Reduction of irrigation in rice cultivation is not only saving water resources but also reducing greenhouse gases emission. The objectives of this study was to determine impacts of water management on the emission of CH4 and rice yield. Experiment was conducted in field conditions in An Giang province, Viet Nam with three treatments as continuous flooding (CF), An Giang Alternative Wetting and Drying (AAWD) which is mostly applied by farmers in An Giang province-Viet Nam, and Alternate Wetting and Drying (AWD). Water levels in the field +5 cm, ± 5 cm and -15 cm were controlled higher, fluctuated and lower than soil surface, respectively for CF, AAWD and AWD. CH4 emission determined every week during 13 weeks of the experiment. Rice yield was determined in 1 m2 at the end of the experiment. The results showed that AWD and AAWD, respectively decreased 78.7 % (p < 0.05) and 6.8 % (p > 0.05) CH4 emission compared to the CF 11.9 mg CH4/m2/h. The rice yield of CF was 6.32 ton/ha lower than AAWD 7.8 ton/ha (p < 0.05) but not different with AWD 6.67 ton/ha. AAWD had higher rice yield but same emission than the CF. Farmers in An Giang province should consider application of AWD in rice cultivation in term of saving water and reduction of CH4 emission.

Download Full-text

WATER MANAGEMENT SYSTEM OF KALIYADEH MAHAL

International Journal of Research -GRANTHAALAYAH ◽

10.29121/granthaalayah.v6.i3.2018.1531 ◽

2018 ◽

Vol 6 (3) ◽

pp. 302-307

Author(s):

Anjali Pandey

Keyword(s):

Water Management ◽

Natural Resources ◽

Ground Water ◽

Management System ◽

Water System ◽

Madhya Pradesh ◽

Water Management System ◽

Islamic Period ◽

Persian Architecture ◽

Art Form

Water in architecture of India played an important role in the culture. Indians developed the traditional hydro engineering to conserve Rain water, Ground water, river, and other natural resources. It could be seen since earliest times. Stepwells were first used as an art form by the Hindus and they influenced many other structures, Mughal Gardens are the examples of the incorporation of water in the design of Architecture. The designs of the gardens are of the medieval Islamic Period. Kaliadeh Mehel near Bheravgarh Fort at the bank of River Kshripa. Ujjain (Madhya Pradesh) is well known and one of the most famous historical landmarks of Madhya Pradesh, it is the fusion of Hindu – Persian architecture. The palace has the exclusive designed water system.

Download Full-text

Simultaneous stimulation of arsenic methylation and inhibition of cadmium bioaccumulation in rice grain using zero valent iron and alternate wetting and drying water management

The Science of The Total Environment ◽

10.1016/j.scitotenv.2019.134696 ◽

2020 ◽

Vol 711 ◽

pp. 134696 ◽

Cited By ~ 4

Author(s):

Angstone Thembachako Mlangeni ◽

Magali Perez ◽

Andrea Raab ◽

Eva M. Krupp ◽

Gareth J. Norton ◽

...

Keyword(s):

Water Management ◽

Zero Valent Iron ◽

Rice Grain ◽

Wetting And Drying ◽

Alternate Wetting And Drying ◽

Simultaneous Stimulation ◽

Arsenic Methylation ◽

Cadmium Bioaccumulation ◽

Stimulation Of

Download Full-text

Arsenic Accumulation in Rice Grain as Influenced by Water Management: Human Health Risk Assessment

Agronomy ◽

10.3390/agronomy11091741 ◽

2021 ◽

Vol 11 (9) ◽

pp. 1741

Author(s):

Israt Jahan Harine ◽

Mohammad Rafiqul Islam ◽

Mahmud Hossain ◽

Hasina Afroz ◽

Rounok Jahan ◽

...

Keyword(s):

Water Management ◽

Health Risk ◽

Management Practices ◽

Human Health Risk ◽

Rice Grain ◽

Wetting And Drying ◽

Straw Yield ◽

Alternate Wetting And Drying ◽

Drying Condition ◽

1000 Grain Weight

Rice is a staple food for humans and a key source of soil arsenic (As) transfer to the human food chain. As a result, it is critical to develop ways for reducing As accumulation in rice. A pot experiment with seven different water management practices was done to examine the impacts of water management on rice (cv. BRRI dhan28) growth, yield, and As accumulation in rice grain. Any health risk due to As accumulation in rice grain was also determined. The soil used in the experiment was artificially contaminated with As and the source of As was sodium arsenate (Na2HAsO4 7H2O). Water management practices affect different plant growth and yield parameters including filled grains per panicle, unfilled grains per panicle, 1000-grain weight, grain yield and straw yield of rice. The number of filled grains per panicle and 1000-grain weight were found to be at their highest in the T7 (alternate wetting and drying) condition, whereas the number of unfilled grains per panicle was at its lowest in the same treatment. The T7 also demonstrated the highest grain yield (21.08 g/pot) and straw yield (22.02 g/pot), whereas the lowest values were noted in T1 (flooding throughout the growth period). The highest As concentration in rice grain (0.52 mg kg−1) was found in T1 and the lowest As concentration in grain (0.27 mg kg−1) was found in T7. Estimation of the human health risk revealed that the non-carcinogenic risks (HQ > 1) and carcinogenic risks (CR > 1.0 × 10−4) were greatly affected by different water regimes. The rice plant grown under alternate wetting and drying condition (T7) showed the lowest health risks compared to other water management practices. Thus, alternate wetting and drying conditions are a good water management strategy for increasing rice output while reducing arsenic buildup in rice grain.

Download Full-text

WATER MANAGEMENT AND METHANE EMISSION FROM RICE FIELDS IN AN GIANG PROVINCE, VIET NAM

Vietnam Journal of Science and Technology ◽

10.15625/2525-2518/56/2c/13041 ◽

2018 ◽

Vol 56 (2C) ◽

pp. 140-147 ◽

Cited By ~ 1

Author(s):

Tran Thi Thanh Thuy

Keyword(s):

Water Management ◽

Rice Yield ◽

Chemical Properties ◽

Soil Surface ◽

Viet Nam ◽

Ch4 Emission ◽

Wetting And Drying ◽

Ch4 Emissions ◽

Physico Chemical ◽

Better Than

This study was carried out to investigate the effects of irrigated water management to CH4 emission from the paddy fields. It was designed with (1) continuous flooding (CF) and (2) alternate for wetting and drying (AWD) which the water level was controlled + 5 cm and ± 5 cm than the soil surface, respectively at Cho Moi, Chau Thanh, Thoai Son and Tri Ton districts of An Giang province. The soil samples were collected to determine their physico-chemical properties. CH4 was collected weekly during the rice cultivation, and the rice yield was determined at the harvest. The results showed that pH 4.55 – 5.93, EC 105 – 175 µS.cm-1, organic matter 3.21 – 3.94 %, CEC 25.05 – 33.33 cmol.kg-1 of the soil were suitable for rice growth. The average rice yield was about 4.5 - 6.52 ton.ha-1. CH4 emissions of the AWD decreased 59.1 % compared to the CF which was 14.6 mg C-CH4.m-2.h-1. Therefore, the AWD is better than the CF in term of reducing CH4 emissions to the environment.

Download Full-text