Material | pH | σ |
Peanut shell | 9.15 | 1.446 ms/cm |
Palm kernel shell | 10.23 | 2.140 ms/cm |
Coconut shell | 10.27 | 10.040 ms/cm |
Corn raid | 9.68 | 4.200 ms/cm |
Corn Straw | 8.64 | 0.962 ms/cm |
Corn stalk | 10.06 | 9.020 ms/cm |
Cassava stem | 9.52 | 7.880 ms/cm |
Papaya stem | 9.27 | 6.260 ms/cm |
Sawdust | 7.46 | 1.257 ms/cm |