“Integration of Phosphate Solubilising Bacteria, Sulphur Oxidizing Bacteria With NPK on Maize (Zea mays): Phosphate Solubilising Bacteria on Maize”. Biological Sciences - PJSIR, vol. 64, no. 1, Mar. 2021, pp. 43-48, https://doi.org/10.52763/PJSIR.BIOL.SCI.64.1.2021.43.48.