Figure 3: Total culturable heterotrophic bacteria counts. Key: BUNa (Un-amended control); BHKD (Heat killed contol); BNPK (NPK); BAUG (Bioaugumentation); BURE (Urea); BPOUT (Poultry dropping); BCD (Cow dung). BHKC showed no bacterial growth for TCHB throughout the 64 days of experimentation. There was no significant difference in TCHB between the other bioreactor treatments.