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Abstract
Soil reaction is an important issue that adversely affects soil fertility and crop productivity. Twenty five representative soil samples from farmers’ fields of Ramchandrakura, Bishgiripar, Andharupara and Nayabil villages of Nalitabari upazila under Sherpur district (AEZ 22-Northern and Eastern Piedmont Plains) and twenty soil samples from farmers’ fields of Bakta, Nishchintopur, Boril and Kaladaho villages of Fulbaria upazila under Mymensingh district (AEZ 28-Madhupur Tract) were collected and analyzed to study the physico-chemical properties of acid soils. Among 45 samples, 13 were sandy loam, 17 were silt loam, 10 were loam, 2 were clay loam and 3 were loamy sand in texture. Soil pH was very strongly acidic to strongly acidic. The soil pH of AEZ 22 varied from 3.81 to 4.78 and that of AEZ 28 varied from 3.96 to 5.11. The organic C of Nalitabari soil varied from 0.50 to 1.35% and that of Fulbaria soils ranged from 0.50 to 1.27% showing low to medium status. The status of nutrient elements viz. N, P, K and S in most of the samples was very low or very low to medium. Total N contents of AEZ 22 varied from 0.06 to 0.14% and that of AEZ 28 varied from 0.07 to 0.16%. Available P in soils of AEZ 22 varied from 3.25 to 26.45 ppm and that in soils of AEZ 28 ranged from 2.45 to 16.62 ppm. Exchangeable K in AEZ 22 soils varied from 15.13 to 92.41 ppm and that in AEZ 28 soils varied from 16.09 to 98.41 ppm. Available S in AEZ 22 soils varied from 1.68 to 33.70 ppm and that in AEZ 28 soils from 3.95 to 27.52 ppm. Therefore, these acid soils should be amended with liming materials and fertilized with inorganic fertilizers and organic manures for successful crop production.
 Asian J. Med. Biol. Res. March 2021, 7(1): 12-20
Highlights
Bangladesh is an agro-based country where soil classifications and their using patterns are major concerns for researchers as well as the farmers to feed the future
The textural class silt loam was dominant among all the soils and this textural class is suitable for most of the agricultural crop production
The physico-chemical analysis of the present study revealed that all the soil samples of Nalitabari (Northern and Eastern Piedmont Plain) and Fulbaria (Madhupur Tract) location were very strongly acidic to strongly acidic in nature
Summary
Bangladesh is an agro-based country where soil classifications and their using patterns are major concerns for researchers as well as the farmers to feed the future. Three major physiographic units are recognized in Bangladesh on the basis of landforms and geology: a) Northern and Eastern Hills of Tertiary formation, occupying 12% of the total area; b) Pleistocene Terraces of Madhupur and Barind Tracts occupying 8% of the total area; and c) Recent Floodplains covering the rest 80% of the total area (Brammer, 1996; Huq and Shoaib, 2013; Islam et al, 2017). The present study area named Madhupur Tract is enlisted as 28th AEZ of Bangladesh which occupies an area of 42,4359 ha and is located in the districts of Dhaka, Gazipur, Narsingdi, Narayanganj, Tangail, Jamalpur, and Mymensingh (FRG, 2018). This is a region of complex relief and soils developed over the Madhupur Clay. The tract is crossed by a number of rivers which has either old or young Brahmaputra alluvium on their
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