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Distribution of Micronutrients in Some Soils of Madhupur Tract in Bangladesh

S. Akhter
SoiI Resource Development Institute, Dhaka, Bangladesh

I. U. Ahmed
SoiI Resource Development Institute, Dhaka, Bangladesh

M. Ahsan
SoiI Resource Development Institute, Dhaka, Bangladesh

M. J. Uddin
Department of Soil, Water and Environment, University of Dhaka, Dhaka- I000, Bangladesh

Abstract/ Executive Summary:

A total of 45 composite soil samples representing 15 soil series were collected from different land types, viz. high, medium high and low land of Madhupur tract for the studies of micro-nutrient status. Iron, Manganese, Copper, Zinc and Boron were determined by Spectrophotometer and Atomic Absorption Spectrometer. Iron content was very high in all soils irrespective of land types and the ranges of average values were 144 - 44, 270- 82 and 303 -148 µg/g for high land, medium high land, and low land soils, respectively. Manganese content was also very high in all soils, however, Karail (238 µg/g), Khilgaon (LL) (189 µg/g) and Tejgaon (159 µg/g) soils showed the three highest quantities of available Mn. Copper content was very high in all but Karail (0.33 µg/g) and Gerua (0.60 µg/g) soils. Zinc and Boron contents varied widely from very high (3.40 µg/g for Zn and 1.07 µg/g for B) to low for Zn (0.53 µg/g) and very low for B (0.10 µg/g). The study indicates the possibilities of zinc and boron deficiency in some high and medium high land soils of Madhupur Tract.

Keywords: Micro-nutrients, Madhupur Tract, Nutrient status, Land types

Location: SoiI Resource Development Institute, Dhaka, Bangladesh

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Soil fertility

Objectives:

To investigate the distribution of Iron, Manganese, Copper, Boron and Zinc in soils developed under different drainage conditions of Madhupur Tract.

Methodology:

The distribution of soils of the Madhupur tract located in different Upazilas of Bangladesh is presented and 2. Soil series have been recognized in this phyosiographic unit (RSS Staff, 1967) which are distributed among 22 Upazila of 8 Districts. The formation is generally almost horizontal but has been broken into a number of fault blocks, some of which are slightly tilted. Fifteen soil series were selected from Kapasia, Sripur, Gazipur Sadar, and Valuka Upazilas of Gazipur and Mymensingh Districts. Selected soil series are Tejgaon, Belabo, Noadda, Bhatpara, Gerua, Chandra, Payati, Chhiata, Karail, Genda, Naga, Kalma (MHL), Kalma (LL), Khilgaon (MHL), and Khilgaon (LL). A total of 45 composite top soil samples were collected (3 samples from each series) for physical and chemical analyses. Collected samples were dried in the shadow, grinded and passed through a 2 mm sieve. High Land (HL) -Land which is above normal flood level and where water can be retained on the land surface within field bunds for more than 1-2 days. Tejgaon , Belabo, Noadda, Bhatpara and Gerua series were under this category. Medium High Land (MHL) - Land which is normally flooded up to about 90 cm depth during the rainy season for more than 2 weeks continuously. Khilgaon (MHL), Kalma (MHL), Chandra, Payati, and Chhiatta series were under this category. Low Land (LL) and Medium Low Land (MLL) - Land which is normally flooded to between 180 and 275 cm depth for a few months during the 1lood season, recognized as Low Land and between 90 and 180 cm flood depth recognized as Medium Low Land. Khilgaon (LL), Kalma (LL), Karail, Genda and Naga series were under this category. Soil pH was determined by glass electrode pH meter from extract of soil and water ratio of I: 2.5. Texture was determined by hydrometer method (Bouyoucos, 1962) and USDA triangular diagram. Organic carbon was determined by wet-oxidation method. In case of micronutrient analysis DTPA extraction method was followed for determination of Fe, Mn, Cu & Zn by Atomic Absorption Spectrophotometer and for boron determination hot water extraction method (Berger and Truog, 1944) was used and subsequently determined by Spectrophotometer.

Source of Information: Bangladesh J. Soil Sci. 36(1-2): 59-66, 2010

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The present study was confined to general discussion on available micronutrients status of some Madhupur tract soils in relation to drainage conditions of seasonal flood water. Total analysis of micronutrient elements in these soils will provide more information about their contents in soils. However, the findings of present studies indicates that Madhupur tract soils are rich in Fe, Mn and Cu under three drainage conditions. Zinc and B are deficient in some soils irrespective of land types.

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