Nutrients | Amount in soil | ||
Okpe | Ekore | Uduvwoku | |
NO3-N | 20.670 ± 0.880a | 9.880 ± 0.080b | 7.690 ± 0.040b |
NH4-N | 3.274 ± 0.340a | 1.066 ± 0.066b | 0.734 ± 0.0666b |
PO4-P | 20.000 ± 0.600a | 4.300 ± 0.300b | 2.300 ± 0.300c |
K | 156.600 ± 7.209a | 99.246 ± 0.046b | 74.440 ± 0.003c |
| Amount in Cassava tuber | ||
| Okpe | Ekore | Uduvwoku |
NO3-N | 82.500 ± 0.981a | 36.200 ± 0.529b | 14.100 ± 0.173b |
NH4-N | 18.636 ± 0.222a | 8.177 ± 0.118c | 3.187 ± 0.038b |
PO4-P | 1.077 ± 0.023c | 0.770 ± 0.017a | 0.647 ± 0.009b |
K | 6455.700 ± 9.241a | 6301.800 ± 6.535b | 3515.700 ± 0.688c |
| Amount in oil bean seed | ||
Okpe | Ekore | Uduvwoku | |
NO3-N | 145.830 ± 1.975a | 96.433 ± 1.302b | 103.760 ± 1.729c |
NH4-N | 32.943 ± 0.439a | 21.783 ± 0.292b | 23.440 ± 0.363c |
PO4-P | 0.737 ± 0.008a | 0.563 ± 0.008b | 0.263 ± 0.008b |
K | 3387.300 ± 7.458a | 2040.200 ± 9.325b | 1425.900 ± 3.764b |