M. Aktar
Department of Soil, Water and Environment, University of Dhaka
S. Mollah
Bangladesh Atomic Energy Commission,
Dhaka
M. S. Islam
Department of Environmental Science and Resource Management, Mawlana Bhashani Science and Technology University, Santosh, Tangail
A. Begum
Bangladesh Atomic Energy Commission,
Dhaka
S. M. Ullah
Department of Soil, Water and Environment, University of Dhaka
S. A. Mamun
Department of Environmental Science and Resource Management, Mawlana Bhashani Science and Technology University, Santosh, Tangail
Transfer, 137Cs, Kalmi, Soil properties
Gazipur Sadar Thana, district- Gazipur;Shirajdikhan Thana, district- Munshiganj and Chatmohar Thana, district- Pabna belong to Bhatpara, Pagla and Gopalpur series respectively
Crop-Soil-Water Management
The soil samples were collected from farmer’s field at a depth of 0-15 cm from three different locations namely Gazipur Sadar Thana, district- Gazipur; Shirajdikhan Thana, district- Munshiganj and Chatmohar Thana, district- Pabna belong to Bhatpara, Pagla and Gopalpur series respectively. The collected soil samples were air dried, ground and passed through a 2.0 mm sieve for physical, chemical and physico-chemical analysis. Total 18 pots were used for the experiment. All treatments were performed in triplicate. Each pot was filled with 10 kg soils. The soils were previously pulverized and mixed well with doses of fertilizers as per recommendation of the Fertilizer Recommendation Guide. The experiments were arranged in a completely randomized design. In order to study the uptake of 137Cs by Kalmi, 137CsCl was taken as a basis of treatment and a source of radioactivity. Liquid solution of 73260 Bq 137CsCl was mixed uniformly with 10 kg soil in each pot. Treatments for the experiment were as follows: To = Control (3 pots of each soil series where no 137Cs was applied), T1 = 73260 Bq 137Cs/ pot (3 pots of each soil series). All treatments were performed in triplicate. The seeds of Kalmi plants were brought from BRRI (Bangladesh Rice Research Institute). Seeds were sown on 25th March, 2006. Water was applied for about 1-2 times in a day. Normal tap water was used for irrigation. The plant samples (root and shoot) were collected properly at the time of harvesting of the crop (60 days after sowing) up to the soil surface level. Roots and shoots were separated and were cut into small pieces, dried weighed, ground separately and stored properly for chemical analysis and radioactivity measurement. The soil was analyzed for moisture percentage, particle size analysis, pH, EC, OC, OM, the total nitrogen, the C/N ratio, the available nitrogen, total phosphorus, the available phosphorus, total and available sulfur, CEC, the exchangeable cations Ca++ , Mg++ Na+, K+, available Fe++, Mn++, Zn++ and Cu++,total Na, K, Ca, Mg, Fe, Zn, Cu and Mn contents. Several standard methods were applied for determination of different parameters as reported by Huq and Alam, (2005). The radioactivities in soil and plant samples were measured by gamma ray spectrometry system. The measurement was carried out at the Health Physics Laboratory of Atomic Energy Centre, Bangladesh Atomic Energy Commission at Ramna, Dhaka. Transfer factors (TF) for plant samples (root and shoot of Kalmi) were calculated. The Duncan’s New Multiple Range Tests (DMRT) was performed and other statistical analysis was performed with the aid of SPSS (SPSS12.0 for Windows, Release 12).
J. Environ. Sci. & Natural Resources, 3(1): 175- 180, 2010; ISSN 1999-7361
Journal