Soil Health · March 2025 · 5 min read
Soil organic matter is the foundation of productive farmland, driving nutrient cycling, water retention, and microbial activity. Building it takes years of intentional management, but the payoff is compounding returns in soil health and crop performance.
Each one-percent increase in organic matter allows the soil to hold approximately 20,000 additional gallons of water per acre. Organic matter feeds the microbial community that makes nutrients plant-available and creates stable soil aggregates. It also buffers soil pH and improves tilth, making fieldwork easier and more effective.
Cover crops, reduced tillage, and manure applications are the three most effective tools for increasing organic matter. Diverse rotations that include high-residue crops like corn or small grains contribute more carbon to the soil than continuous low-residue crops. Combining multiple practices accelerates gains beyond what any single method achieves alone.
Annual soil tests tracked over time reveal trends in organic matter percentage, though changes of even a tenth of a percent per year represent real progress. The Haney test and PLFA analysis provide additional insight into biological activity and nutrient cycling. Consistent sampling depth and timing are essential for meaningful comparisons year to year.
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