| Table 4. Suggested guideline for liming of pond based on pH and texture of pond soil | |||||
| pH of pond soil | Lime requirement (kg/ha of CaCO3) | ||||
| Heavy loams or clays | Sandy loam | Sand | |||
| 4 | 14,320 | 7,160 | 4,475 | ||
| 4-4.5 | 10,740 | 5,370 | 4,475 | ||
| 4.6-5.0 | 8,950 | 4,475 | 3,580 | ||
| 5.1-5.5 | 5,370 | 3,580 | 1,790 | ||
| 5.6-6.0 | 3,580 | 1,790 | 895 | ||
| 6.1-6.5 | 1,790 | 1,790 | 0 | ||
| Data source: Tacon (1988) (http://www.fao.org/docrep/field/003/AB467E/AB467E04.htm) | |||||