Abstract

Potassium is the third most significant nutrient required for growth and development by the plants. Plant absorbs the K mineral in the form of K+ i.e. soluble and available form of potassium for plant from the soil. The concentration of K+ ion is low because of over exploitation and to accomplish the K necessity of the plant, agrochemical fertilizer named as potash was discovered. The use of potash has reduced the K scarcity in the plants but arose pollution and depletes the fertility of the soil. Potassium solubilizing microbes have been found as an appropriate alternative of potash. The K-solubilizing microbes avail the K by solubilizing and mineralizing the mechanism through the production various organic acids and extracellular enzyme. Different microbes belonging to genera Agrobacterium, Bacillus, Burkholderia, Microbacterium, Myroides and Pseudomonas, Pantoea have been reported as K solubilizer.

Key words: Agricultural Sustainability, Biofertilizers, Diversity, Potassium Solubilization, Plant Growth Promotion