DOI:10.29111/ijlrst ISRA Impact Factor:3.35
Research Paper Open Access
International Journal of Latest Research in Science and Technology Vol.3 Issue 1, pp 82-87,Year 2014
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Received : 23 February 2014; Accepted : 26 February 2014 ; Published : 28 February 2014
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The study was conducted in forested soils of three hilly districts of Chittagong Hill Tracts (CHT), Bangladesh to evaluate their fertility status. There were 17 sites; each site was an individual hill with variable slopes, elevation and forest type. A total number of 102 soil samples were collected from surface & subsurface from three positions of each hill i.e. hill top, mid-slope and foot hill and analyzed for various physical, chemical and nutritional properties. There were four forest tree species such as teak (Tectona grandis), gamar (Gmelina arborea), jarul (Lagerstroemia speciosa) and mahagony (Swietenia mahagony) species planted in different sites. The results showed that soil organic carbon, cation exchange capacity, exchangeable magnesium, and total nitrogen differed among the sites due to the variation in slope, elevation, aspect, texture, moisture & temperature regimes and clay content. The contents of organic matter, total nitrogen, available phosphorus and available potassium also varied due to the variation in land use. Soil pH varied within a narrow range between 5.1 and 5.7. But variation in organic matter content of these forested hilly soils was considerable between 1.0 and 2.44 percent. The soils were categorized into low and medium categories. The ranges of total N, and available P, K, Ca and Mg were 0.05% to 0.18%, 1.38 mg kg-1 to 7.32 mg kg-1, 62 mg kg-1 to 206 mg kg-1, 279 mg kg-1 to 928 mg kg-1 and 74 mg kg-1 to 371 mg kg-1 respectively. Teak sites were considerably more severely eroded. Teak should be selected in some valley sites where the soils are deep, fertile and well drained. It should not be planted in steep slopes susceptible to erosion.
Copyright © 2014 Md. Imam Hossain et al. This is an open access article distributed under the Creative Commons Attribution 4.0 International (CC BY 4.0) license which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Md. Imam Hossain, Md. Abul Kashem and Khan Towhid Osman , " Fertility Status Of Some Forested Soils Of Chittagong Hill Tracts, Bangladesh ", International Journal of Latest Research in Science and Technology . Vol. 3, Issue 1, pp 82-87 , 2014
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