Soil PH Modification
Soil AciditySoil acidity may be determined by pressing a strip of blue litmus paper (obtained at any drug store) inside a ball of moist soil. If the paper turns pink or red the soil is acid or even sour, thus indicating that a dressing of lime is needed. If no change occur the soil is either neutral or alkaline.
Copyright Information: Gardening Short Cuts
See Also: Soil Sterilizing