LaMotte Soil Chemistry Test Equipment - Manual (Page 10)

LIMESTONE APPLICATIONS Sands and sandy loams require slightly
less limestone per unit of area, while clays and clay loams require a
slightly higher rate of application. Where large amounts of limestone
application are suggested, it is advisable to divide the application over
several months for closer control. Test the soil six months after the first
application to determine if further pH adjustment is required. This allows
sufficient time for the soil to reach equilibrium.
LIMESTONE EQUIVALENTS
100 lbs of Limestone (Calcium Carbonate) is equivalent to 56 lbs Burned
Lime (Calcium Oxide) or 74 lbs Hydrated Lime (Calcium Hydroxide).
ALUM APPLICATIONS Many peats and other organic mulches are
highly acid and will help acidify the soil when incorporated in the soil or
used in the planting mixture.
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