Research and development on phosphorus and potassium biofertilizer

Abstract

The research project found the potent degrading microorganism isolated from rock phosphate and potassium feldspar that effectively degraded rock phosphate and potassium feldspar to release available forms of P₂O₅ and K₂O. Result showed that  the non-sterilized ground rock phosphate inoculated with  Aspergillus niger, Penicillium sp., Chaetomium sp and Actinomycetes demonstrated that the most potent microorganism to dissolve ground phosphate to  be available form was A. niger (available P = 164.12 ppm) and followed by Actinomycetes which available P as 162 ppm., respectively when compared to the non-treated one. Penicillium sp. could help to degrade sterilized ground rock phosphate which available P was 166.75 ppm  and followed by Chaetomium sp. Testing for P-solubilizing microorganism. Moreover, result showed that Actinomycetes was the most potent microorganism to dissolve potassium feldspar which gave K available form of 19.25 ppm and followed by  Chaetomium sp. The sterilized potassium feldspar incubated with Actinomycetes could significantly release available potassium of20.00   ppm which higher than the non-treated control that released available potassium of  9.50 ppm. The other tested microorganism also released some amount of available P and K. The research findings were developed the potent degrading microorganism to be high phosphorous biofertilizer and high potassium biofertilizer used for organic crop production.