| Popis: |
There is a continuous demand for bio-fertilizer to improve the soil fertility and increase food production. Wastes were collected from eateries, food canteens, domestic houses and agricultural outlets. Five experimental set-ups were made using different combinations of digested wastes as follows: pig waste (Pw), cassava wastes (Cw), food wastes (Fw); pig waste + cassava waste (Pw+Cw), pig waste + Food wastes (Pw+Fw). The slurry of each category of bio-product were prepared by addition of appropriate volume of water, incubated for 70days with intermittent agitation at regular intervals in the digester. The principal bacteria which took the most active role in the bioconversion process were identified to be P. aeruginosa and Bacillus spp. Comparative evaluation of each of the digested category of slurry combinations showed variations in their nitrogen content as follows: Pw (1.70± 0.03 mg/100g), Cw (0.61±0.02mg/100g), Fw (1.96±0.03mg/100g), Pw+Cw (1.20±0.01mg/100g), Pw+Fw (2.10± 0.02mg/100g). Pw+Fw showed highest K, P and Mg concentrations as 66.72± 2.36 mg/100g, 143.36± 2.36 mg/100g and 53.34±2.36 mg/100g respectively.The elemental composition in the increasing order in each of the slurry waste as follows: Cw |
