Deficiency of potassium in red and lateritic soils of Jharkhand State of India is common in intensively vegetable growing areas. Farmers prefer to grow crops using only nitrogeneous and phosphatic fertilizers, ignoring potassium. Lack of use of potassic fertilizer has decreased the productivity and quality of vegetables in the state. The current study was initiated in 2001 with the aim of developing a potassium fertilization schedule for the intensively vegetable growing areas of the state to ensure higher productivity and better quality of the produce.