Field context, research translation, and practical reading for soil health professionals.
25 articles·2,361 total reads
Part 4 of Understanding & Interpreting Soil Health Indicators: what Potentially Mineralizable Nitrogen (PMN) measures, the first-order mineralization kinetics behind it, how the lab runs the 7-day anaerobic incubation, how PMN compares to PSNT, ISNT, ACE protein, hot-KCl and the CO2 burst, how to sample and handle a fresh-soil-only test, what management moves it, and why it is a useful capacity index but a weak stand-alone fertilizer predictor.
PLFA is the most reproducible method for measuring living microbial biomass in soil — but no validated thresholds exist for interpreting the numbers. Here is what the science actually supports.
Mid-infrared spectroscopy can estimate many soil health indicators from one rapid scan, reducing cost and turnaround while making large-scale, routine field monitoring far more practical.
Agricultural carbon markets in 2026 are more mature, but they are still highly conditional. Farmer returns depend on acreage, baseline practices, verification costs, and contract terms, so the practical question is whether a carbon program creates meaningful net value for a specific farm.
If your local NRCS office is hard to reach, you still have options. Start with Extension to build a field-level soil-health plan, then use your conservation district, state NRCS office, or a certified Technical Service Provider to connect that plan to EQIP, CSP, or other cost-share programs.
Healthy soil can improve water storage, but the popular claim that every 1% increase in soil organic matter stores 20,000 gallons per acre is usually overstated. A more realistic expectation is a modest, texture-dependent gain in plant-available water, plus better infiltration, deeper rooting, and improved drought resilience.
Deep-rooted cover crops can improve porosity by creating biopores, but choosing the right crop and judging the result is not simple. Evidence shows these roots can help following crops find pathways through compacted layers, but they do not fully repair bulk compaction or replace a well-timed subsoiler.
Plant an apple tree where an orchard once stood and it often struggles. Apple replant disease — a soilborne pathogen complex — costs growers an estimated $70,000–$150,000 per acre over a new orchard's first four years. Here's what causes it, where it strikes, and which treatments actually restore yield, with data from WSU, Cornell, and global field trials.
Cover crops cost water — that much is true. But whether that cost kills your next wheat crop depends on rainfall zone, termination timing, and rotation type, not on a blanket rule. This article works through the actual trade-off numbers for dryland grain and wheat-fallow systems so you can make the call for your operation.
Part 5 of our soil health indicator series: how the CO2 burst test (Solvita, Haney, Cornell CASH) measures the living, active fraction of your soil's carbon, how to read the number against texture-specific research benchmarks and producer-facing CO2-C bands, which management practices actually move it, and why the same soil can give very different answers depending on which lab and method you use.
Permanganate-oxidizable carbon (POX-C) is the most popular "active carbon" soil health test for good reason: it's cheap, repeatable, and moves with management faster than total organic carbon. Here's what the number means, how to read it for your soil, what actually shifts it, and the limitations that should keep you from over-interpreting it.
The $42–44B herbicide market is growing at 5–6% CAGR even as 546 resistance cases (IHRWD) and tightening regulation expose its limits. Precision spot-spraying has crossed the chasm; robotics works in specialty crops but unit economics are brutal; RNAi remains pre-commercial after 14 years. Here is the science, the capital, the policy, and what soil-health practitioners should do now.
$200 per acre is the headline. The realistic range is $16–$162 per acre depending on CI reduction, sharing percentage, and yield — with $71 per acre as the most defensible middle estimate. Run your own numbers in the embedded calculator, and read the honest math, the documentation burden, and what to do now.
The ACE protein test estimates the size of the soil's organically bound nitrogen reservoir.
Roller-crimping can reduce glyphosate use, but its success is crop- and region-specific: reliable for soybeans in humid areas, risky for corn, and unsuitable for semi-arid Plains.
The realistic per-acre cost of cover cropping ranges from $15 to $100 — but the break-even math depends on which benefits you capture. Here are the real numbers by region.
A rural Missouri team is building practical tools for soil health, sensing, and regenerative agriculture.
The rice carbon market has rebuilt on strict science. New 2026 protocols account for the methane-nitrous oxide trade-off, with prices hitting $17–18.
Sikkim is 100% organic state in India. 66,000 farmers transforming steep Himalayan slopes into a global standard for soil health and resilient agriculture.
Virtual fencing isn’t automation—it’s timing. In sheep and goats, precise moves protect root recovery, reduce parasite exposure, and keep nutrients cycling where they belong: in the soil.
Soil microbial communities regulate nutrient cycling, soil structure, and plant stress responses—processes that directly affect crop productivity and yield stability. Microbial inoculants (often marketed as biofertilizers/biostimulants) can improve crop performance, but their efficacy is highly variable because establishment and function depend on environmental and biological context.
A sandy, semi-arid soil should not be graded against a humid clay loam. Here is how Soil Health Gap, ecological reference units, and a Two-Tier framework can replace generic targets with fairer, field-specific benchmarks.
Editor’s Note: At Soil Health Exchange, we believe data is important, but experience is everything.
A soil test earns its keep when it changes a costly decision. Field-response data show where phosphorus is likely to pay, where it probably will not, and why representative sampling matters more than a long list of analyses.
New articles, seasonal field insights, and research translation delivered to your inbox.