Physical and chemical properties of some selected soils of Bangladesh
2002
Hossain, M.M. | Sattar, M.A. (Bangladesh Agricultural Univ., Mymensingh (Bangladesh). Dept. of Soil Science)
The soil samples were collected at different depths from 48 locations at 16 thanas under 7 districts. The soils were silt loam and silty clay loam in texture. The pH of the soils varied from 4.9- 7.9, 4.9-8 and 5.0-7.9 at D1, D2 and D3 depths, respectively. The highest pH value of 8.0 was found at Saramongal from Rajair thana under Madaripur district at D2 depth. On the basis of 0-45 cm depth, an average pH values for 7 districts can be placed in the following order: Gopalgonj greater than Rajbari greater than Madaripur greater than Faridpur greater than Moulavibazar greater than Habigonj greater than Sylhet. Most of the soils were slightly alkaline in reaction. The organic matter content in soils ranged from 0.69 - 2.45%, 0.51 - 2.73%, 0.89 - 2.83%, 0.83 - 2.56%, 0.55 - 1.98%, 0.51 - 2.00% and 0.55 - 2.45% in Gopalgonj, Faridpur, Rajbari, Madaripur, Moulavibazar, Habigonj and Sylhet districts, respectively. The highest organic matter (2.83%) was found in Tipuragram at Rajbari Sadar thana under Rajbari distirct at D1 depth (0 - 15 cm) and the lowest organic matter (0.51%) was found in Pitua at Nabigonj thana under Habigonj district and Deura in Faridpur district at D3 depth (30 - 45 cm). The EC value of Gopalgonj, Faridpur, Rajbari, Madaripur, Moulavibazar, Habigonj and Sylhet district soils ranged from 1.73 - 2.83, 1.24 - 3.84, 1.45 - 2.01, 1.30 - 3.52, 0.27 - 0.90, 0.37 - 0.41 and 0.26 - 1.17 dsm-1, respectively. An average EC values for 7 districts can be placed in the following order: Gopalgonj greater than Madaripur greater than Faridpur greater than Rajbari greater than Moulavibazar greater than Sylhet greater than Habigonj. Most of the soils were alkaline in nature and it may be reduced through the application of Gypsum and other practices.
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