| Table 15. Guidelines for pond liming, based on pH and soil texture | |||||
| pH of pond soil | Lime requirement (kg/ha of CaCO3) | ||||
| silty clay | clay | heavy loam or clays | sandy loam | sand | |
| 6�7 | 500�1 000 | 1 000�2 000 | 0�1 790 | 0�1 790 | 0 |
| 5�6 | 2 000�4 000 | 4 000�6 000 | 3 370�3 580 | 3 580�1 790 | 1 790�895 |
| 4�5 | 4 000�6 000 | 6 000�9 000 | 10 740�8 950 | 5 370�4 475 | 4 475�3 580 |
| Data source: Subosa (1985); Boyd 1990 in Boyd and Tucker (1998) | |||||