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Manufacturer's Product Description

Both as a soil amendment and a fertilizer, gypsum is beneficial and economical. Bumper Harvest gypsum is processed from pure uncalcined gypsum, ground to a fineness of 70 - 90 percent through a 100 mesh. In this form, it is widely used to increase yields in a variety of crops, as well as for environmental landscaping, park and lawn maintenance, golf courses, athletic fields, commercial mushroom cultivation, and poultry breeding.
The chemical analysis of agricultural gypsum, or land plaster, is expressed as a minimum calcium sulphate based upon dihydrate. Applied to the soil, this hard-working additive provides essential elements in an easily assimilated form.
Because gypsum is slowly soluble, its benefits extend over a long period of time. Gypsum has a neutral pH; no extra expense is required to counteract souring or sweetening effects. Excellent for flocculation, gypsum prevents soil hardening and slick spots. And soil stabilized with gypsum is readily accessible to farming equipment.
Exceptional Quality, Reliable Consistency Bumper Harvest gypsum rates uniformly high in quality and purity. You can count on it to make a consistent contribution to healthy and sustained crop growth, as these typical averages indicate: Gypsum...96% Elemental sulfur...18% Elemental calcium...22% Particle size 100 mesh...79% pass through 325 mesh...55% pass through
Gypsum at Work As a direct source of sulphur and calcium, and an indirect potassium source, Bumper Harvest gypsum promotes growth by aiding in the formation of protein and stimulating chlorophyll development — without the need for lime to sweeten the soil.
For nitrogen replenishment, and as an indirect nitrogen source, Bumper Harvest gypsum is used by nitrifying bacteria in cover crops such as clover, resulting in increased crop yields.
Used with phosphate rock fertilizers, Bumper Harvest gypsum is cheaper than chemical treatments. Adding equal parts gypsum yields water-soluble phosphate at a lower expense than chemical alternatives, and with superior results.
Potassium, while found in practically all soils, is present in complex forms that are not usable by plants. However, Bumper Harvest gypsum reacts slowly with complex silicates to liberate soluble potassium salts, making essential elements available in a form that plants can readily use.
A valuable and highly efficient soil conditioner, Bumper Harvest gypsum corrects the absorption properties of high-sodium irrigation water. In “black alkali” soils unfit for vegetation, gypsum restores a proper calcium balance. Gypsum is also used for wet spot drainage and the clearing of ponds, where it combines tiny clay particles into larger aggregates for better solids removal.
Following are some guidelines to help take advantage of the far-reaching benefits of Georgia-Pacific Bumper Harvest agricultural gypsum plaster.
New lawns: Apply 15-20 pounds per 100 square feet in fall. For high clay content, increase to 30-40 pounds.
Established lawns: Broadcast 15-20 pounds per 100 square feet.
Flowers and vegetables: Spade in 25-30 pounds per 100 square feet of bed; mix before adding compost. Apply spring or fall uniformly and soak with water.
Shrubs: Spread 3-4 pounds around each shrub; work in; water.
Legumes in rotation: Apply 200-500 pounds per acre in early spring.
Perennials: Apply 200-500 pounds per acre in early spring; repeat application.
Alfalfa and clover: Apply 2,000 pounds per acre at time of seeding, on new crops.
Hay and grasses: Apply 200-600 pounds per acre at time of seeding new crops; apply an additional 500-1,000 pounds per acre after cropping.
Corn: Apply 500-1,000 pounds per acre during ground preparation or drilled in with corn at planting.
Wheat and other small grains: Apply 300-1,000 pounds per acre drilling in or broadcasting at seeding time or when plants first start.
Peanuts: Apply 250-500 pounds per acre applied at last working of the vines (the larger the growth, the heavier the application).
Potatoes: Apply 500-1,000 pounds per acre when soil is prepared or by drilling in at planting; broadcast over crop when plants first start.
Apply 400 pounds per acre, spreading carefully over ground at planting.
Add 30-60 pounds per ton of fresh manure at first or second turning.
Scatter gypsum over the top of the pile; turn in during regular turning.
Add sufficient quantities of water; do not extend heating process beyond the time necessary to pasteurize and lower the pH.
Apply 12 pounds for each 100 cubic feet of water to be treated.
Use this formula for obtaining water volume: Determine average depth (1/3 of depth at deepest point), multiply by area in square feet.
Use in poultry houses to promote cleaner, healthier conditions and prevent the presence of ammonia gas.
Use as a disinfectant.
Sprinkle in litter, dust baths and manure pits to absorb moisture, control odor and improve the fertilizing value of manure.

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