INTERNATIONAL JOURNAL OF AGRICULTURAL TECHNOLOGY

Volume 15, No. 03, Month JULY, Year 2019, Pages 465 - 470

Research and development on phosphorus and potassium biofertilizer

Pongnak, W. and Soytong, K.

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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 as261 ppm., respectively when compared to the non-treated one. Penicillium sp .could help to degrade sterilized ground rock phosphate which available P was 266. 57ppm 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 29.17 ppm and followed by Chaetomium sp. The sterilized potassium feldspar incubated with Actinomycetes could significantly release available potassium of 12.22ppm which higher than the non-treated control that released available potassium of 9. 72ppm. 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.

Keywords

phosphorus, potassium, biofertilizer

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