FAQs

How much GYPSOIL will I need?

For soil amendment, apply GYPSOIL at a rate of one to two tons per acre every one to two years. For sulfur only, typical rates are 300 to 500 lbs./A but growers often opt for the higher rates to achieve both benefits.

For peanut production, rates depend on the variety of peanut grown and wheterh you are producing seed peanuts. Typical GYPSOIL rates for peanuts are as follows: 

Virginia peanuts: 1,000 - 2,000 lbs./A

Large-seeded runners: If pegging zone calcium is <500 lbs./A, apply 1,000 lbs./A

Seed penauts (all large seeded varieties): 1,000 lbs./A or more seed or seed contract requirement

Does GYPSOIL replace liming?


No. Lime is used to adjust the soil’s pH. GYPSOIL offers a host of other benefits that enhance soil structure and improve the release of nutrients to the crop but GYPSOIL does not alter soil pH.

What crops benefit most from GYPSOIL?


Applying GYPSOIL can be beneficial for all crops because it improves the soil’s ability to provide a healthy environment for plant roots. It normally takes more than one year to realize the full benefit of using GYPSOIL as a soil amendment.

Plants that have specific needs for calcium or sulfur typically respond more quickly to applications of GYPSOIL. In the Southeast, GYPSOIL is commonly used in peanut production. 

How do I apply GYPSOIL?


Apply GYPSOIL using equipment designed to spread bulk materials (such as lime, litter, etc.). Be sure equipment is in good repair and set up properly to broadcast the material. Read more about application tips.

Who can apply GYPSOIL?

If growers have the proper equipment, they may be able to apply GYPSOIL themselves but there are also many qualified applicators that are experienced applying GYPSOIL. For more information call 1-866-GYPSOIL (497-7645) or talk with your Territory Manager.

Do I need any special permitting to use GYPSOIL?


No. GYPSOIL is in full compliance with all land application regulations in Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Kentucky, Missouri, North Carolina, Ohio, South Carolina and Wisconsin. Growers who live in Wisconsin and Illinois will be asked to provide information regarding the application rate, and other specifics.›

Do I have to incorporate GYPSOIL?


No. GYPSOIL is water-soluble and will move down through the soil profile depositing calcium and sulfur into the soil profile. Ohio State University research shows that, within two years, water-soluble calcium and sulfur from surface-applied gypsum are present at 36-inch depth.

Can I cut back on my fertilizer if I use GYPSOIL?


Possibly. It depends upon your farming practices, soil conditions, growing environment, etc. Typically, soils where biological systems are active - when soil microbes are effectively at work breaking down organic matter, making humus and balancing nutrients - plants and soil will use applied fertilizers more efficiently.

Is GYPSOIL a fertilizer?


GYPSOIL is primarily used a soil amendment that loosens up hard, compacted soil and allows water and plant roots to reach farther down into the soil profile. The biological systems also release and balance soil nutrients for the crop. GYPSOIL is also an excellent source of sulfur and calcium for soils. A typical analysis for GYPSOIL (dry weight basis) indicates GYPSOIL supplies 22 percent calcium and 16 percent sulfur. For Indiana and Iowa growers.

How do I know if my GYPSOIL is working?


Generally, you may begin to experience softer soils within 12 months of application, depending upon your farming practices and soil condition. Many growers report their fields show improved water infiltration with less ponding and quicker drying after just one application. 

Growers often report seeing immediate crop quality and yield improvements after GYPSOIL applications in fields where sulfur depletion was evident.

For crops requiring specific, high levels of calcium, such as peanuts and potatoes, problems associated with calcium deficiencies can be avoided with proper calcium supplementation. 

Is there any research data on gypsum?

Yes. The USDA, various university research centers and other organizations around the world have done extensive research on the effects of gypsum on soil structure, soil and water quality and crop production. Check out our Research Library. One of the most recent studies is the Economic Benefits of Gypsum Study. 

Will my yields improve with GYPSOIL?


GYPSOIL changes soil structure to allow for better crop performance. Yield response depends upon the whole management system and what the limiting factors are. With good management, better soils consistently produce higher yields. A 2014 Economic Impact Study shows that yield is the number one benefit of gypsum use rated by long term users.

Having elevated levels of supplmental cacluim in the top one to two inches of soil helps peanut pods and kernels develop, according to peanut production experts. It is critical to avoid pops, pod rot and black heart or germination issues in seed peanuts. Read more in the Peanut Grower, April 1, 2011 article: "Calcium is King" found in our Research Library.

How much does GYPSOIL cost?


Delivered cost will depend largely on the cost of freight to deliver GYPSOIL from our production site to your farm. Talk to a Territory Manager or call 1-866-GYPSOIL (497-7645) about your cost to apply GYPSOIL.

What are payment terms for GYPSOIL?


Call 1-866-GYPSOIL (497-7645) for details or talk with your local Territory Manager. 

Where can I get GYPSOIL?


Our distribution network is expanding constantly. Currently, growers can obtain GYPSOIL at several locations in the Midwest, Midsouth, and Southeast. We have a growing number of Territory Managers or call 1-866-GYPSOIL (497-7645) for an update of our supply locations. 

Who can deliver GYPSOIL?


Some production sites allow you to arrange your own delivery. Some, however, limit the number of trucking companies that can enter their facility; in these cases, GYPSOIL will arrange delivery to your farm. Please contact us to determine which production site is closest to you and and determine the relevant trucking policies.

How can I get more information about GYPSOIL?


Our website has been recently updated to include detailed information about the reasons to use GYPSOIL, application tips and technical information. Check out Reasons to Use or visit the Ask Our Agronomist page. You can also call us at 1-866-GYPSOIL (497-7645).  Follow us on Twitter @Gypsoil.

How can I learn more about using GYPSOIL on my land?


Please connect with your local Territory Manager for the name of local distributors. Call us at 1-866-GYPSOIL (497-7645), and we’ll be happy to discuss your needs and help you facilitate your order.