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Adds sulfur

GYPSUM POWDER or calcium sulfate dihydrate (CaSO4 2H2O) is an excellent source of sulfur.

GYPSUM POWDER brand gypsum adds sulfur to the soil and it provides highly available calcium that moves deep into the soil profile, a recognized advantage for no-tillers.
Typical Analysis
Calcium Sulfate Dihydrate
(dry weight basis)
Calcium  17-20 %
Sulfur     13-16 %
Researchers in Wisconsin, Ohio and other Midwestern states are reporting sulfur deficiency is on the rise.  A recent annual summary by the International Plant Nutrition Institute (IPNI) also suggests that soil tests with low sulfur results are becoming more common in the Cornbelt today versus five years ago.
It used to be that soils got plenty of sulfur from the atmosphere. Electrical plants that burned coal released sulfur into the air and every time it rained, nearby farmland was fertilized with free sulfur.  Also, some nitrogen fertilizers contained excess sulfur so fields got a dose of sulfur with those applications.  With the advent of flue gas desulfurization and greener fertilizers, along with the fact that many of today’s crop genetics may have a higher sulfur requirement, sulfur deficiency is more common.
Gypsum, used as a sulfur source, raises yields in a variety of crops including corn, alfalfa, cotton, soybeans and others.
Studies at the Ohio State University have demonstrated a significant corn response to gypsum.  In one particular study, where gypsum supplied sulfur at a rate of 30 lbs/acre, corn yield was increased from 182 to 193 bushels/acre.

Increases water infiltration

Soils will soak up rainwater faster and deeper, even in heavy rains.  Growers often see improved water infiltration - with less ponding and runoff - after just one application of GYPSUM POWDER.

GYPSUM POWDER increases soil permeability to water.  Soils will soak up rainwater faster and deeper, even in heavy rains.  Growers often see improved water infiltration after just one application. Research trials have shown results to support these observations.  A USDA-ARS study measured water infiltration of nearly two inches per hour in a test plot where gypsum was applied versus just a half an inch per hour in a control plot where no gypsum was applied.

Calcium (% Base Saturation)     USDA-ARS  National Soil Erosion Research Laboratory

Improves soil structure

GYPSUM POWDER helps improve soil structure by increasing soil particle aggregation.  With GYPSUM POWDER, soils become softer, more porous and flocculated. 

Improves aggregation, reduces crusting and compaction

GYPSUM POWDER helps improve soil structure by increasing soil particle aggregation.  With GYPSUM POWDER, soils become softer, more porous and flocculated.  The resulting mellow, garden-like soil resists erosion, compaction and crusting.
Air and water percolates through the soil profile easier when soils are well-flocculated.  Because GYPSUM POWDER is water soluble, it works deep into the soil profile so plant roots penetrate downward faster and deeper.  This promotes better plant stands, drought resistance and a healthier crop.
One of the first things GYPSUM POWDER users experience is how much easier equipment pulls through the field.  The soil is looser, yet soft and firm. It is sometimes possible to drive at a higher gear when working the ground.
Growers also notice after applications of GYPSUM POWDER how easy it is to push a soil probe into the profile.  Soil is softer and looser making it easier for the probe to slide into the earth.

Decreases erosion

Erosion is a huge cost to productivity and it can contribute to reduced water quality, malfunction of drainage and hydrological systems.  GYPSUM POWDER decreases soil loss.

Crop growers know they must protect the soil in their fields.  Erosion is a huge cost to productivity and it can contribute to reduced water quality and malfunction of drainage and hydrological systems.  Loss of sediment is the number one source of pollution in water, according to USDA Agricultural Research Service soil scientist Darrell Norton.
Dr. Norton has done extensive evaluations of gypsum’s impact on soil erosion, nutrient runoff, sediment loading, water infiltration and surface cracking.   He found in a series of rainfall simulator experiments that soil loss is reduced by more than 50 percent when gypsum is applied at a rate of one ton per acre. Gypsum prevents soil particles from detaching during rainfall events and being lost in surface water runoff.