Growing population in India demands more food in near future and continues further. This pressurises Indian agriculture to produce more from shrinking arable land. Balanced nutrition plays a key role in augmenting crop production. Potassium, one of the most important macronutrient, has greater influence on plant physiology and sturdiness for stress conditions. But, low status of K in Indian soils resulted from exclusion of K in balanced nutrition lead to mining of soil reserve K. Soil K status depends on soil mineralogy, fertilizer K application and through other K sources (organic manures, tank silt, irrigation water etc.). Therefore, while interpreting soil K status, non-exchangeable K is to be considered. Hence, this paper deals with categorization of soils both district wise and agro-ecological region wise for exchangeable and non-exchangeable K. Based on this crop recommendations were made and crop response also studied. Positive results were observed in different crops and cropping systems across agro-ecological regions. This further supports the inclusion of non-exchangeable K in soil K fertility interpretation and recommendation for crops based on categories of both exchangeable and non-exchangeable K.