Table 2. Suggested guideline for liming of pond based on pH and texture of pond soil
Soil pH	Lime requirement (tonnes/ha as CaCO3)
	Heavy loams�	Sandy loam	Sand
	or clays
< 4.0	14.32	7.16	4.48
4.0-4.5	10.74	5.37	4.48
4.6-5.0	8.9	4.48	3.58
5.1-5.5	5.37	3.58	1.79
5.6-6.0	3.58	1.79	0.9
6.1-6.5	1.79	1.79	nil
>6.5	nil	nil	nil
Data source: Boyd and Tucker (1998)