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Physico-chemical Characterization of Some Selected Soil Series of Mymensingh and Jamalpur Districts of Bangladesh

P. R. Sheel
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202

M. A. H Chowdhury
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202

M. Ali
Soil Science Division, BINA, Mymensingh, Bangladesh,

M. A. Mahamud
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202

Abstract/ Executive Summary:

The soil physico-chemical properties have been disturbed due to long continued intensive agricultural practices. Under this situation we are approaching rapidly to a very strong future challenge in sustaining the quality of our soil. This study was conducted to evaluate the physico-chemical properties of the selected soil series. The area covered Mymensingh and Jamalpur districts of Bangladesh. Soil samples were collected randomly from different profiles of Lokdeo, Tarakanda, Silmondi and Melandah soil series during March-May, 2014 and analysed. All soils were acidic and textural classes were sandy loam, silt loam, loam, and clay loam. Organic matter and total N contents low to very low. Available S content in the upper layers of most soils were medium to optimum and in the deeper layer low to medium. The exchangeable K, Ca and Na contents were also low. The upper layers of all the locations contained higher amounts of available Zn. The available Cu and Fe contents of most soils were very high. The soils of all locations contained very high amount of available Mn except the deeper layers (45-75 cm) of Melandah which contained optimum amount of available Mn. Soil pH showed negative correlation with total N and available S. Total N showed positive correlation with soil OM, available Cu and available S. There was positive correlation between available S and available Mn.

Keywords: Soil Physico-chemical characterization, soil series, Brahmaputra Floodplains

Location: Mymensingh and Jamalpur districts

Start Date: 00-03-2014

End Date: 00-05-2014

Program Area: Chemical Analysis

Commodity: Land management

Objectives:

the present study was undertaken to characterize the physico-chemical properties of some soil series of Old Brahmaputra Floodplains of Bangladesh.

Methodology:

The study area covered Mymensingh and Jamalpur districts of Bangladesh. Soil sample had been collected from Kashimpur, Muktagacha; Barakalar, Gouripur; Gavishimul, Gouripur of Mymensingh districts and Sadar Jamalpur location of Jamalpur districts during March-May, 2014. The representative soil series were identified with the help of Soil Resource Development Institute (SRDI). The soil sample were collected from different soil profiles from each location and taken to the laboratory for physical and chemical analyses. The collected soil samples were dried at room temperature, ground and sieved with a 10 mm sieve. Then the prepared samples were preserved in polythene bags after labeling for laboratory studies. The soil samples have been analyzed following standard method, viz. particle size distribution by a hydrometer and soil pH by glass electrode pH meter, organic carbon by wet oxidation and total nitrogen by kjeldahl method, available P by Bray and Kurtz method, available S by turbidimetric method of titration, exchangeable cations e.g. Ca, K and Na were determined by Flame photometer, available Zn, Cu, Fe and Mn were determined by Atomic Absorption spectrophotometer etc.

Source of Information: J. Bangladesh Agril. Univ. 13(2): 197–206, 2015

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The textural classes were sandy loam, silty loam, loam and clay loam in the studied areas. The soils in these locations are acidic in nature. Most of the soil contained low to very low organic matter content. Soil pH showed negative correlation with OM. The total N content in the soils of the studied area was low to very low. It showed negative correlation with soil pH. The available P content was medium to high in Lokdeo series. Though other series contained low to optimum amount of available P, it showed negative correlation with available S and total N. The available S content in the soils of upper layers in most of the studied area were medium to optimum and in the deeper layer low to medium. It showed positive correlation with total N. The exchangeable K, Ca and Na contents were low to very low in most of the soils. The upper layers of all the locations contained high to very high amount of available Zn compared to the lower layers. It showed positive correlation with total N and available S. Available Cu, Fe and Mn contents were high to very high in most of the locations. Fe showed negative correlation with total Mn. Cu and Mn showed positive correlation with total N. The results suggest that macro nutrient contents of all soils have come down to a level that the soils need external aid in the term of manures or fertilizers to produce higher crop yield.

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