Md. Hasibur Rahman and Syed Elahi. Dhaka Univ, Dhaka, 1000, Bangladesh
Twenty-three soil samples were collected from four distinct soil profiles of Gerua and Kalma soil series to assess the micronutrient status in the Madhupur tract soils of Rajendrapur area. Four profiles were studied for morphological and chemical properties in the field. Two profiles were forest covered and rests two were under fallow land. Status of micronutrients are equally important as major plant nutrients, with these point of view four trace elements Fe, Mn, Zn and Cu were determine in different extractants. The total amount of iron, manganese, copper and zinc are high in the soils under investigation. Their availability indices are quite low. However, all elements were in adequate available form. Low pH influenced the availability of iron and manganese. At the different horizon of four profiles, 1N NH4OAc (pH 7.0) extractable elements were 33.2 to 38.9 ppm Fe, 10.1 to 25.9 ppm Mn, 1.1 to 5.1 Cu and 4.5 to 6.3 Zn. Maximum variation was in the case of HCl extractalbe copper, where Gerua soil on average 1.9 ppm and Kalma soil had 4.2 ppm.
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