A field survey was conducted to study the micronutrient constraints in sugarcane growing Vertisols of northern Transition Zone of Karnataka by Geographical Information System (GIS) technique. Results of the soil analysis and mapping by GIS technique revealed that, maximum area under deficiency of iron (59.20, 72.40 & 62.20%), zinc (70.10, 64.50 & 55.40%) and boron (68.10, 62.34 & 54.90%), respectively was observed in Basavanadaddi, Tadakod and Devihosur micro-watersheds. Whereas, the available status of manganese and copper was sufficient. Deficiencies of Fe, Zn and B in selected micro-watershed are mainly related to higher soil pH, low organic carbon and high CaCO3 content in the soil samples. Further, correlation coefficient of micronutrients status increased with the increase in the organic carbon and clay content of the soil in all the micro-watersheds. On the other hand, the availability of micronutrients decreased with increase in CaCO3 and soil pH.