Assessment of Phosphate Solubilization, Indole Acetic Acid and Ammonia Production by Bacteria and Fungi Isolated from the Rhizosphere of Guinea Corn (Sorghum bicolor)

The rhizosphere is known to harbour a number of bacteria and fungi that can improve plant growth productivity. This study investigated the abilities isolated from guinea corn solubilize phosphate, Idole Acetic Acid (IAA) ammonia production. Purified isolates were confirmed through biochemical test Gram staining. Phosphate solubilization was quantified using Pikovskaya’s, medium on standardized standard curve. IAA, production observed spectrophotometer Mcfaland standard. Serratia marcescens, exhibited highest phosphate activity (547.52 ug/ml), while Micrococcus luteus, least (1.45 ug/ml). However, Escherichia coli, had (1821.4 marcescens (100.71ug/ml). Bacillus licheniformis, (2452.65 Lactobacillus bulgaricus, (1495.77 Among fungal isolates, Aspergillus niger effects (679.31ug/ml), Mucor pusillus ((1.82 Ammonia all screened. B. lichiniformis (2452.65ug/ml) L. (1495.77ug/ml). findings imply soil harbours which help availability solubilized IAA ammonia.