Distribution of Nutrient Status Under Different Parent Materials in Some Brown Hill Soils of Bangladesh

抄録

Status of various available macro and micronutrients have been studied in twelve soil series developed over three different parent materials viz. Tipam-Surma, Dupi-Tila and Alluvial Valleys of Brown Hill Soils of Bangladesh. The organic matter content were found 2.20 to 3.78%, 1.20 to 2.10% and 1.50 to 2.80% in the soils of the Tipum-Surma formation, Dupi-Tila formation and Alluvial Valley soils, respectively. Nitrogen and phosphorus content were found low and the potassium content was high in all the soils, In the Tipum-Surma formation, the boron content in soil ranges from low to optimum (0.27 to 0.62μg/g), in Dupi-Tila formation and in Alluvial Valley soil it ranges from low to high (0.25 to 0.60μg/g and 0.27 to 0.72μg/g, respectively), Available Zn content was found 1.10 to 1.55 μg/g, 1.40 to 2.90μg/g, and 1.50 to 5.00μg/g in the soils of Tipum-Surma, Dupi-Tila and Alluvial Valley areas, respectively. Fe, Mn and Cu contents, however, were observed to be very high due to parent materials and these hill soils are found inherently fertile.