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Physico-chemical Properties of Some Soils of Madhupur Upazila Under Tangail District

M. M. Rahman
Supreme Seed Company Limited

M. S. Nasrin
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh

M. A. Uddin
Department of Crop Botany, Bangladesh Agricultural University, Mymensingh

K. M. Rahman
Department of Environmental Science, Bangladesh Agricultural University, Mymensingh

M. Shamsunnahar
Department of Economics, City College, Pabna

Abstract/ Executive Summary:

A laboratory study was conducted to assess the physiochemical properties of soils in six selected unions of Madhupur upazila under Tangail district for efficient land use and managment. Six selected areas were Aronkhola, Alokdia, Mirzabari, Golabari, Sholakuri and Aushnara of Madhupur upazila. Twenty four soil samples were collected from 5-15 cm depth. The physicochemical analysis included soil texture classes, pH, EC, organic matter, total N, available P, S, Zn, Cu, Mn, exchangeable K and Na. The texture of the Aronkhola, Alokdia, Sholakuri and Aushnara soils were clay loam while Mirzabari and Golabari soils showed silty clay loam texture. The soil colour was found within brown to dark brown. Soil samples was ‘slightly acidic’ to ‘medium acidic’ (pH=4.29-6.05) in reaction. Organic matter contents were found at low to medium level. %Total N showed more or less same pattern of distribution as that of organic carbon. Available P and S contents were low in soils and most of thy samples contained below the critical level. The present study indicates that analyses of soils to determine its physicochemical characters are of utmost importance for better understanding and proper fertilizer recommendation for crop growth.

Keywords: Chemical properties, Soils, Madhupur

Location: Madhupur upazila under Tangail district

Start Date: 00-00-2011

End Date: 00-00-2011

Program Area: Resource Development and Management

Commodity: Soil fertility

Objectives:

1. To assess the physico-chemical properties of the soil, 2. To evaluate the soil nutrient status of the areas under study, 3. To use this information for soil reclamation and also for fertilizer recommendations to maximize crop production.

Methodology:

The soil analyses was carried out in the laboratories of the Department of Agricultural chemistry, Soil Science and Central laboratory, BAU, Mymensingh in order to determine some physical and chemical properties of six selected unions of madhupur upazila of Tangail districts under AEZ No.28. Most of the lands of these regions are covered with forest plants. Soil samples were collected during the month of March, from the selected six unions at the depth of 5-15 cm. The soil samples were analyzed for the following parameters-soil texture, colour, pH, EC, organic matter, total nitrogen, available phosphorus, sulphur, zinc, copper, manganese, exchangeable potassium and sodium. Methods for the analyses of physical properties Soil texture: Soil texture determinations were carried out by hydrometer method as outlined by Bouyoucos1927and piper. The textural classes for different soil samples were then determined by plotting the results on a triangular diagram designed by Marshal following USDA system. Methods for thy analyses of chemical properties Soil pH: Soil pH was determined by glass electrode pH meter as described by Jackson.The position of the electrode was adjusted in the clamp of the electrode holder. The electrode was immersed into partly settled soil suspension and pH was measured. The result was reported as soil pH measured in water (Soil and water ratio=1:2.5). Electrical conductivity: The EC of collected soil samples was determined electrometrically (1:5: : soil: water ratio) by a conductivity meter using O.O1 M KCL solution to calibrate the meter following the procedure described by Ghos. Determination of organic carbon: Organic carbon was determined titrimetrically following Walkley and Black method and modified by Ghosh. Total nitrogen: Total N content of soil was determined by Micro kjeldahl method where soil was digested with 30 % HO, and catalyst mixture. Nitrogen in the digest was determined by distillation with 40 % NaOH followed by titration of the distillate trapped in H BO with O.O1 % (NH) SO. Available phosphorus: Available soil P was determined by OIsen’s methed.The sample was read with the help of a spectrophometer at 660 nm wave length. Available sulphur: Sulphur was de termined by turbidimetric method with the help of a spectrophotometer.The samples were read in a spectro photometer at 420 nm wave length after 20 minutes. Exchangeable potassium and sodium: Exchangeable K and Na contents were determined with the help of flame emission spectrophotometer using K filters. Percent emission was recorded following the methods outlined by Ghosh. Available zinc, copper and manganese: Available Zn, Cu and Mn contents were determined by atomic absorption spectro- photometer (AAS, UNICAM 696) at the wave lengths of 213.9, 324.8 and 279.5, Respectively in the Central Laboratory of BAU, Mymensingh.

Source of Information: J. Agrofor. Environ. 6 (1): 89-93, 2012; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The physicochemical analysis included soil texture classes, pH, EC, organic matter, total N, available P, S, Zn, Cu, Mn, exchangeable K and Na. The texture of the Aronkhola, Alokdia, Sholakuri and Aushnara soils were clay loam while Mirzabari and Golabari soils showed silty clay loam texture. The soil colour was found within brown to dark brown. Soil samples was ‘slightly acidic’ to ‘medium acidic’ (pH=4.29-6.05) in reaction. Organic matter contents were found at low to medium level. %Total N showed more or less same pattern of distribution as that of organic carbon. Available P and S contents were low in soils and most of thy samples contained below the critical level. The present study indicates that analyses of soils to determine its physicochemical characters are of utmost importance for better understanding and proper fertilizer recommendation for crop growth.

Knowledge Management: Journal