“…Different bacteria, namely, Pseudomonas, Burkholderia, A. ferrooxidans, B. mucilaginosus, B. edaphicus, B. circulans, and Paenibacillus spp. solubilize and release K from potassium-bearing minerals to an easily available form (Velázquez et al, 2016;Basak et al, 2017). The plant growth promoting activity of potassium solubilizing bacteria in different crops pepper, cucumber, maize, wheat, corn, cotton, rape, soybean etc has been reported by several workers (Singh et al, 2010;Zahedi et al, 2016;Prajapati and Modi, 2016). Microbial activity in soil plays an important role in favouring iron (Fe) uptake (Colombo et al, 2014).…”