Dolomite lime is a carbonate mineral comprised of magnesium and calcium. Dolomite isn't a fertilizer, but a soil conditioner that's used to "sweeten" acidic soils and make them more alkaline. Because dolomite lime is particularly slow-acting, it must be added to the soil well in advance of planting to gain the desired benefit. Powdered dolomite lime can also be mixed into a nutrient rich fertilizer blend so that you can enrich the soil and correct its pH at the same time.
Instructions
1. Send a soil sample to your local cooperative extension office for analysis. Do this four to six months before planting. Wait two to three weeks for the results of the soil analysis.
2. Consult the soil analysis report to determine how much dolomite lime to use. Apply 2 inches of powdered dolomite lime to the surface of the soil in the absence of a soil analysis report.
3. Work the powdered dolomite lime into the top 6 to 8 inches of soil using a shovel, garden fork or tiller. Rake the amended soil to a smooth finish.
4. Water in the powdered dolomite lime with up to 1 inch of supplemental irrigation.
5. Wait three to five months before planting to give the slow-acting dolomite time to change the pH of the soil.
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