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Soil Amendment Solutions

American Ag understands that sustaining a full crop yield potential without administering healthy soil is nearly impossible which is why we provide soil amendments and other products that are designed to meet the needs of your crops in today’s ever-changing agriculture sector.

Soil Amendments We Carry

Amendments are added to soil to change and improve it. Unlike fertilizers, which add nutrients to the soil, amendments modify the condition of the soil itself. The condition of the soil, specifically its suitability for supporting plant roots, is what soil experts call “tilth.” When tilth is right, plants experience healthy growth.


American Ag delivers organic-approved composting such as organic green-waste compost, dairy compost, and composted chicken. Also, compost provides many benefits as a soil amendment and a source of organic matter by improving soil biological, chemical, and physical characteristics. Compost also increases microbial activity and improves water retention in sandy soils.


American Ag is a leading provider of agricultural sulfur to help decrease the pH in soils throughout California. More sulfur is removed from the soil as a result of an increase in agricultural production by increasing fertilizer use, intensifying cropping systems, promoting high-yield crop varieties, and improving irrigation.
  • Tiger 90
  • 90% bulk
  • 75% bulk
  • 99% sulfur


Routinely called the “miracle worker,” we provide different kinds of gypsum to farmers, ranchers, and growers throughout California. When soil pH is right, but other factors are off, gypsum can help. Gypsum modifies soil without any significant change to soil pH as it increases water penetration, loosens compacted clay soils and promotes easier root penetration.
  • 75% OMRI
  • 90% OMRI
  • 90% Wallboard
  • 95% OMRI


We provide dolomite to our agriculture customers across California. The ag-dolomite lime product helps to bring nutrients back into the soil by neutralizing the PH and adding both calcium and magnesium to the soil. AG-Dolomite Lime is great for quickly spreading across crops, gardens, and fields.

  • Ag Dolomite CDFA


We supply different ag lime to our farmers, ranchers, and growers across California. The effects of agricultural lime on soil are: it increases the pH of acidic soil (the lower the pH the more acidic the soil). In other words, soil acidity is reduced and alkalinity increased which provides a source of calcium and magnesium for plants. Ag lime also permits improved water penetration for acidic soils.

  • Ag lime 75 CDFA
  • Ag flour CDFA
  • Ag limestone CDFA
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