Dominant Factors: What Actually Builds Soil Organic Matter

Dominant Factors: What Actually Builds Soil Organic Matter

238 Source: Andrew McGuire, Agronomist Ag June 17th, 2026 Article
Soil health is driven by soil organic matter, which is driven by plant biomass inputs, which are driven by photosynthesis. The controlling factors of soil health are light, temperature, and water, and the important inputs are nutrients, with nitrogen often playing a key role. It is important to focus your management on these dominant drivers. Don’t get distracted by smaller-effect factors.
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