| physico-chemical properties and productivity of a nigerian typic-haplustult amended with fresh and burnt rice-mill wastes. | in order to arrest the declining productivity of the soils in the abakaliki agro-ecological zone of s.e. nigeria, four levels (12.5, 25.0, 37.5 and 50.0 mg ha-1) of fresh (fw) and burnt (bw) rice-mill wastes abundant in the area, and a mixture of the waste + npk and npk alone were added to the soil (typic-haplustult) to evaluate their immediate and residual effects on the productivity of the soil using maize (zea mays l.) as a test crop. results showed a significant reduction in bulk density as ... | 2001 | 11198180 |
| cadmium in locally grown rice (oryza sativa) in nigeria. | cadmium levels were determined in locally grown rice samples in nigeria and any potential risk involved in their consumption was assessed. the dried samples were digested with a 1:1 hno3:hclo4 mixture and analysed with atomic absorption spectrophotometer (aas). mean cadmium values (mg/kg) were: adamawa (0.50 ± 0.02), benue (0.63 ± 0.05), nasarawa (0.48 ± 0.10), taraba (0.48 ± 0.10), anambra (0.49 ± 0.09), ebonyi (0.60 ± 0.08) and enugu (0.59 ± 0.10). all samples exceeded the codex alimentarius m ... | 2013 | 24779937 |