Soil health study at IUBAT’s Rajendrapur agricultural research station, Gazipur

Twenty soils were collected on April 2024 covering 10 from Northern side and 10 from Southern side at 0-15 cm depths from IUBAT’s Rajendrapur Agricultural Research Station. The soils were dried at IUBAT’s Lab.1, ground, sieved and labeled properly. Soil health covering the physical (soil colour, land type, and particle density) and chemical (pH, organic carbon, organic matter, total N, P, K, S, Ca, Na, EC, and HCO₃) properties were studied at Humboldt Soil Testing lab, Bangladesh Agricultural University (BAU), Mymensingh-2202. The morphological description of the soils reported in Table 3. Soils were red in colour with clay, silty clay and sandy clay, clay loam type with particle density of 2.388-2.568 g/cc. pH values of the 20 soils varied from 4.60 to 5.45, organic carbon 0.4-1.15%, organic matter 1.11-2.47%, total N 0.067-0.112%, P 2.18-30.72(ppm), K(0.130-0.269 meq/100g), S (6.15-25.76 meq/100g), Ca (0.760-                  1.956 mg/100g), Na (0.122-0.184 mg/100g), EC (50.4-250 µs/100g), and HCO₃ (244.0-427.0 µs/cm). Results showed minor to major variation of pH, organic carbon, organic matter, total-N, P, K, S, Ca, Na, EC and HCO₃ where standard deviations (SD) produced the depth of variations within the 20 samples covering 10 from Northern and 10 from southern regions. Here high land soils were acidic, rich in forest vegetation require proper management through using of compost, green manuring, water hyacinth, decomposed household wastes for 3-5 years for proper cultivation of rice, other crops and vegetables, and for proper using of land for agricultural research purposes.

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