In order to know the fertility status of Bt. cotton growing Vertisols of Dharwad district field survey was conducted. Among different villages of Dharwad district, Bandiwad, Byahatti, Dattur, Hebsur, Ingalalli, Kiresur, Kusugal, Rottigwad, Siraguppi and Sulla were selected. From each selected village five Bt. cotton growing farmers were selected and georeferenced soils samples were collected with 0-30 cm depth and are subjected for analysis using standard procedures. The results of the study indicated that the soils were alkaline (7.10 to 8.94), non-saline (0.06 to 0.40 dSm-1), low in organic carbon (2.1 to 5.0 g kg-1), low to medium in available nitrogen (94 to 344 kg ha-1) and phosphorus (15.5 to 39.50 kg ha-1), medium to high in available potassium (310 to 635 kg ha-1) sulphur (10.20 to 31.5 mg kg-1). The DTPA extractable copper, iron, zinc and manganese content in these soils ranged from 0.28 to 0.58, 2.61 to 4.00, 0.53 to 0.77 and 2.15 to 8.5 mg kg -1 with average value of 0.44, 3.14, 0.64 and 4.44 mg kg-1, respectively.