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US 5,628,811 AGranted
Method of ameliorating acid soil to enhance plant growth
AssigneesDravo Lime Company, U.S. Department of Agriculture
InventorsJohn W. College, Joel H. Beeghly, K. Dale Ritchey, Virupax C. Baligar, Ralph B. Clark
Life of this patent
Estimating the term…
Abstract
A method of ameliorating acid soils so as to enhance plant growth is provided by adding to soil 0.05 to 20 percent by weight, based on the weight of the soil, of a flue gas desulfurization by-product consisting essentially of 80-99 percent by weight of gypsum (CaSO.sub.4.2H.sub.2 O) and 1-20 percent by weight of magnesium hydroxide (Mg(OH).sub.2).
Claims11
A method for ameliorating acid soil to enhance plant growth therein comprising:
- adding to said acid soil an amount of between 0.05 to 20 percent by weight of a flue gas desulfurization by-product consisting essentially of 80 to 99 percent by weight gypsum and 1-20 percent by weight magnesium hydroxide.
A method of ameliorating acid soil to enhance plant growth therein comprising:
- adding to said soil an amount of between 0.05-2.5 percent by weight of a flue gas desulfurization by-product consisting essentially of about 93-96 percent by weight gypsum, 4-7 percent by weight magnesium hydroxide, up to 3 percent SiO.sub.2, up to 1 percent Fe.sub.2 O.sub.3, up to 1 percent Al.sub.2 O.sub.3, and less than 200 ppm boron.
Dependencies are inferred from the claim text.