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McGill AG Compost — a profitable season starts with healthy soil

Conventional growers use McGill AG for only one reason — it works.

When farmers return composted organic matter and active soil microbes to fields, good things happen.  So good, in fact, that at the end of the season, you’ll return more money to your pocket.

Compost is also good for the environment. It controls erosion and pollutant runoff, conserves energy and returns carbon to the soil instead of allowing it to become air pollution.  You can feel as good about the way you grow food as you do about feeding people and turning a profit.

McGill AG compost adds organic matter and inoculates your soil with hard-working microbes

Uncontrolled composting can result in excessively-high temperatures.  High temperatures destroy pathogen-suppressing compounds and microbes. McGill’s computer-controlled process eliminates this problem. Tight control keeps temperatures within desired ranges, resulting in robust microbial activity.  These microbes inoculate your soil to replenish and revitalize.

Reconsider fumigation

Fumigation can destroy soil microbes, negating much of compost’s benefit. But our growers report equal or improved yields without fumigation when McGill AG is used in conjunction with cover crops and extended rotations.

Those same microbes also suppress some diseases, helping to maximize yield without chemical overload.

To keep those soil microbes working throughout the growing season, reconsider fumigation.  Use compost and alternate controls, instead.

The McGill advantage

  • Higher yields and quality — Increases nutrient uptake.  Adds organic matte.  Builds soil tilth.
  • Greater disease and pest resistance — Releases antibiotic compounds.  Proliferates pathogen-suppressing microflora.
  • Balanced moisture levels — Holds more water during dry spells.  Soil drains faster after heavy rain. Can reduce irrigation requirements.
  • Less dependence on chemicals — Increased nutrient uptake means reduced chemical input.
  • Longevity — The benefits of McGill AG last through multiple seasons.

Learn more about compost and its benefits.


McGill AG is a “fresh” version of our STA-certified SoilBuilder compost.  The product has met all federal and state requirements for vector reduction and pathogen kill, but it has not been aged (cured).

Our agricultural customers like it for its slightly higher NPK.  But that also means it has not reached a stage of full maturity/stability and still carries some odor.  Otherwise, it’s the same product as SoilBuilder, but its use should be restricted to farming applications only.


McGill AG compost is specifically formulated for cost-effective results in conventional agriculture, including broadcast, topdressing and banded row.

However, we recommend McGill SoilBuilder for horse hay/pasture and plasticulture.


  • See results with as little as 4-8 tons per acre or about a 1/8-inch layer of compost
  • Apply with standard spreaders
  • Use no more than 30% in blends and mixes — compost is a concentrate
  • Base your application rate on soil tests and compost analysis for best results

McGill compost calculator