Table 5 presents minimodels that could be used to predict any expected
pH value with (application of) a given RHA rate using the derived regression
equations. When applying these minimodels, it is necessary that RHA be used
as lime to raise acid soil pH to a value between 5.5 and 6.0 from the standpoint
of minimum toxicity, adequate availability of micronutrients and for
maximum benefit to be derived from the applied materials.