Measuring Organic Matter in the FHCU
The Farmland Health Check-Up evaluates organic matter through several complementary approaches:
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Soil samples are analyzed for total organic matter content using the loss-on-ignition (LOI) method. This provides the baseline SOM percentage for each field and allows comparison between your three assessment fields and county averages.
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Permanganate-oxidizable carbon measures the biologically active fraction of organic matter. Values above 600 mg/kg are generally considered good for Ontario mineral soils.
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Autoclaved citrate-extractable protein measures the nitrogen-rich organic compounds in soil. Higher soil protein levels indicate a soil with greater capacity for self-sustaining fertility.
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Soil colour, earthworm counts, residue decomposition rates, and aggregate stability all provide visual evidence of organic matter status.
Key Takeaway: On fields with complex slopes and a history of downslope tillage, tillage erosion can remove more soil than water erosion — the relocation of topsoil results in extreme productivity loss on knolls and shoulder slope positions. See how this connects to yield plateaus across Ontario.
Remediation Strategies
Compaction remediation depends on the depth and cause of the problem:
Surface (0-10 cm)
Often self-correcting through freeze-thaw cycles in Ontario's climate, provided the soil is not re-compacted in spring
Plow Pan (10–25 cm)
Can be addressed through strategic deep tillage (subsoiling) to a depth below the compacted layer, ideally under dry soil conditions in late summer or early fall
Deep (>25 cm)
Caused by heavy axle loads, this compaction is below the reach of most tillage tools and requires a long-term approach combining controlled traffic patterns, deep-rooted cover crops, and reduced axle loads
Ontario-Specific Benchmarks
Expected SOM ranges for Ontario's primary agricultural soil types:
Sandy soils (Fox, Berrien)
1.5-2.5% SOM
Inherently low organic matter due to high aeration and rapid decomposition.
Loamy soils (Guelph, Harriston, Huron)
3.0–4.5% SOM
Best capacity for organic matter accumulation due to clay-organic matter complexes.
Clay soils (Brookston, Toledo, Haldimand)
3.5–5.5% SOM
Can maintain high SOM due to physical protection within clay aggregates.
Eroded knolls
1.5–2.5% SOM
Regardless of soil type. Erosion removes the organic-rich topsoil.
The FHCU compares your fields' SOM levels against these regional benchmarks and against each other, providing context for whether organic matter depletion is contributing to yield gaps between your best and worst performing fields.
Ontario-Specific Benchmarks
Expected SOM ranges for Ontario's primary agricultural soil types:
The Complete FHCU Diagnostic Package
33-Page Diagnostic Workbook
Complete field-by-field documentation of soil, drainage, erosion, and management conditions.
Yield-Limiting Factor Analysis
Clear identification of exactly why your underperforming fields aren't matching your best.
Prioritized BMP Recommendations
Ranked by yield impact and cost-effectiveness for practical implementation.
Why This Matters for Yield
On a 200 bu/ac corn field, a 15% yield reduction from compaction represents 30 bu/ac — or approximately $165/ac in lost revenue at $5.50/bu. Across 100 acres of compacted field, that's $16,500 in annual lost income from a single, addressable problem. See the full analysis in our compaction yield loss page.
Key Takeaway: On fields with complex slopes and a history of downslope tillage, tillage erosion can remove more soil than water erosion — the relocation of topsoil results in extreme productivity loss on knolls and shoulder slope positions. See how this connects to yield plateaus across Ontario.
Ontario-Specific Benchmarks
Expected SOM ranges for Ontario's primary agricultural soil types:
Signs of Degraded Soil Structure
A Certified Crop Advisor evaluating your fields through the FHCU will look for the following indicators of structural degradation:
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Slope length — measured in feet, a key factor in water erosion potential
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Slope complexity — whether the field has uniform or complex slopes with converging water flow patterns
Common Problems We See
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Surface crusting — A hard, sealed surface layer that prevents seedling emergence and reduces water infiltration. Common on silty soils (Huron and Haldimand silt loams) and soils with depleted organic matter.
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Platy structure — Horizontal, plate-like peds in the upper soil profile indicate compaction or smearing. When you break open a soil block and find thin, horizontal layers like pages of a book, that's platy structure.
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Massive, cloddy condition — Soil that breaks into large, hard, angular blocks rather than crumbling into smaller aggregates. Common in heavy clay soils tilled too wet, or in fields with low organic matter.
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Poor aggregate stability — Aggregates that fall apart immediately when wetted. Well-structured soil aggregates will hold together for minutes; degraded ones dissolve within seconds.
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Reduced porosity — Healthy topsoil should be approximately 50% pore space. As structure degrades, total porosity decreases and the proportion of large pores (macropores >0.08 mm) declines dramatically.
The Hidden Cost of Compaction
Soil compaction is the most widespread and most economically significant soil degradation problem on Ontario farms. Unlike nutrient deficiencies that show up in tissue tests or drainage problems visible as ponded water, compaction exists invisibly below the soil surface — a dense layer that quietly restricts root growth, reduces water infiltration, limits nutrient uptake, and suppresses biological activity year after year.
Research-Backed Impact
Research from the University of Guelph, OMAFRA, and Agriculture and Agri-Food Canada consistently demonstrates that moderate to severe subsurface compaction reduces corn yields by 10–30%, soybean yields by 8–20%, and wheat yields by 5–15%.
How Compaction Reduces Yield
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Root restriction— When penetration resistance exceeds approximately 300 psi, root elongation slows dramatically. Above 400 psi, most crop roots cannot penetrate at all. On compacted fields, effective rooting depth may be limited to 15–20 cm, compared to 40–60 cm on well-structured soils.
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Reduced water infiltration — Compacted layers have very low hydraulic conductivity. On tile-drained fields, compaction above the tile line can negate much of the drainage investment.
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Poor aeration — Compaction reduces macroporosity, which is essential for gas exchange. On compacted, waterlogged soils, 20–40% of applied nitrogen can be lost to denitrification.
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Reduced nutrient uptake — A root system confined to 15 cm depth accesses roughly half the nutrient pool available to roots reaching 30 cm.
Compaction Sources on Ontario Farms
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Axle loads — A fully loaded grain cart (axle load 15–20 tonnes) exceeds the bearing capacity of virtually all Ontario soil types. Compaction penetrates to 40–60 cm — well below the reach of any tillage tool.
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Tile drainage status — Whether systematic tile, random tile, or no tile is present. The spacing, depth, and outlet condition of existing tile systems are evaluated.
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Hydrological soil group — Classified by the rate at which water moves through the soil profile (rapid, moderate, slow).
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Surface drainage patterns — Whether surface water flows away from the field efficiently or accumulates in depressions, headlands, or along fence lines.
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Water infiltration rate — How quickly rainfall enters the soil versus running off the surface. This is closely linked to soil structure and compaction.
Eroded Knolls: The Hidden Yield Drain
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Soil samples are analyzed for total organic matter content using the loss-on-ignition (LOI) method. This provides the baseline SOM percentage for each field and allows comparison between your three assessment fields and county averages.
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Permanganate-oxidizable carbon measures the biologically active fraction of organic matter. Values above 600 mg/kg are generally considered good for Ontario mineral soils.
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Autoclaved citrate-extractable protein measures the nitrogen-rich organic compounds in soil. Higher soil protein levels indicate a soil with greater capacity for self-sustaining fertility.
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Soil colour, earthworm counts, residue decomposition rates, and aggregate stability all provide visual evidence of organic matter status.
What This Means on Your Farm
Soil remediation — the excavation of deposited sediments from low positions and return to eroded knolls — is an emerging BMP in Ontario that can restore productivity to severely degraded landscape positions. The FHCU identifies fields where soil remediation may be economically justified and connects farmers with relevant cost-share programs. Book a free checkup to assess your fields for erosion damage.
Tillage Erosion
Tillage erosion is the most underestimated form of soil degradation on Ontario farms. It occurs through the systematic, gravity-assisted movement of soil downslope during tillage operations. Every pass of a plow, cultivator, or disc moves soil a short distance — always net downhill. Over decades, this process strips topsoil from upper slope and knoll positions and deposits it in lower landscape positions.
Key Takeaway: On fields with complex slopes and a history of downslope tillage, tillage erosion can remove more soil than water erosion — the relocation of topsoil results in extreme productivity loss on knolls and shoulder slope positions. See how this connects to yield plateaus across Ontario.
The result is the characteristic "whitecaps" or eroded knolls visible in many Ontario fields — lighter-coloured hilltop areas where subsoil or parent material has been exposed at the surface. These areas represent the loss of the entire A-horizon (topsoil) and often part of the B-horizon.
The FHCU evaluates tillage erosion through slope complexity analysis, tillage direction assessment, and visual identification of subsoil exposure on upper landscape positions.
Wind Erosion
Open and unprotected croplands with sandy soils are most prone to wind erosion. If you can see soil material moving across your field surface, it is estimated that up to 5 tons per acre may be lost. Wind erosion is most active on sand plains (such as Norfolk, Brant, and Simcoe counties) during spring when fields are bare, soils are dry, and wind speeds are highest.
Common Problems We See
The FHCU assesses wind erosion vulnerability based on soil texture, field length in the prevailing wind direction, surface roughness from residue or cover crops, and the presence of windbreaks. Sandy soils with less than 30% residue cover and no windbreak protection are at highest risk.
Connection to Other Assessment Areas
The Foundation Factor
Drainage interacts with nearly every other FHCU assessment area. Poor drainage exacerbates compaction (wet soils compress more easily), reduces organic matter decomposition and nutrient cycling, increases erosion risk, and limits the effectiveness of crop rotation and cover crop strategies. Addressing drainage is often the foundational step that enables all other soil health improvements to deliver their full yield benefit.
Components of Soil Organic Matter
Soil organic matter is not a single substance but a continuum of materials at different stages of decomposition:
Fresh Residues (0–10% of SOM)
Recently deposited crop residues, root exudates, and manure. These materials are actively decomposing and represent the primary food source for soil microorganisms. In Ontario's climate, surface residues from corn stalks may take 2–3 years to fully decompose, while soybean residues break down within one season.
Active Organic Matter (10–20% of SOM)
Partially decomposed materials and living microbial biomass. This fraction — measured as active carbon (POXC) or soil protein (ACE protein) — turns over on a scale of months to years and is the most responsive to management changes. Active organic matter drives nutrient mineralization, aggregate formation, and biological pest suppression.
Stable Humus (60–90% of SOM)
Highly decomposed, resistant organic compounds with turnover times of decades to centuries. Humus provides the long-term cation exchange capacity, water-holding capacity, and dark colour associated with productive soils. Building humus is a slow process — it takes consistent organic matter additions over many years.
Building Organic Matter: OMAFRA Best Management Practices
Increasing SOM is a long-term process — typically requiring 5–15 years of consistent management changes to achieve measurable increases of 0.5–1% in total SOM. OMAFRA recommends the following strategies:
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Cover crops — Annual cover crops after cash crop harvest add 1–3 tonnes of root and shoot biomass per hectare. Cereal rye is the most reliable cover crop for Ontario, establishing well after corn or soybean harvest and providing winter ground cover.
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Reduced tillage — Transitioning to no-till or reduced-till slows organic matter decomposition. Long-term no-till fields in Ontario show 0.3–0.8% higher SOM in the surface 15 cm compared to conventionally tilled fields.
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Extended rotations — Including small grains and perennial forages in rotation increases the quantity and diversity of organic inputs.
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Manure and compost — Solid cattle manure applied at 10–15 tonnes/ha provides approximately 2–4 tonnes of organic matter. Composted materials contribute more to the stable humus fraction.
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Reducing erosion — Preventing topsoil loss is essential for maintaining the organic matter that has accumulated in the surface horizon.
How Compaction Develops
Subsurface compaction on Ontario farms typically develops through two primary mechanisms:
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Tillage-induced compaction (plow pan) — Repeated tillage to the same depth creates a dense layer at the bottom of the tillage zone. On fields that have been moldboard plowed at 15 cm (6 inches) depth for years, a compaction layer forms at exactly that depth. The plow sole becomes progressively denser with each tillage pass, particularly when tillage occurs under borderline moisture conditions.
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Traffic-induced compaction — Modern farm equipment is significantly heavier than the machinery of previous generations. Axle loads of 10–20 tonnes are common during harvest, manure application, and grain cart operations. This weight compresses soil well below seedbed depth, creating compaction that conventional tillage cannot reach or remediate.
Common Problems We See
Evidence of compaction includes: stunted plants along traffic lanes, restricted root development visible when plants are pulled from the soil, horizontal root deflection at the compaction layer, standing water in wheel tracks after rain events, and increased tire slip during field operations. This issue is commonly uncovered during a farmland health checkup.
Understanding Soil Compaction in Ontario
Soil compaction occurs when soil particles are pressed together, reducing pore space between them. This reduces the soil's capacity to hold air and water — the two essential components that roots need to function. In ideal growth conditions, topsoil should be approximately half solids (mineral and organic fractions) and half pore space, with the pore space roughly equally divided between air and water. Compaction disrupts this balance, creating dense layers that restrict root penetration, limit water infiltration, and reduce biological activity year after year.
Common Problems We See
Most Ontario soil types are at risk of compaction if they are not in good condition. The risk is highest when soils are trafficked or tilled under wet conditions — a common scenario in Ontario's spring seasons. Fine-textured soils (clay loams, silty clay loams, and clays) are particularly susceptible because their smaller particles can be packed more tightly than sandy soils.
Measuring Compaction in the FHCU
The Farmland Health Check-Up uses penetrometer testing to measure soil resistance at multiple depths across each field. A penetrometer is a pointed probe pushed into the soil that measures the force required to penetrate — expressed in pounds per square inch (psi).
Key Takeaway: Generally, root growth becomes restricted above 300 psi and severely limited above 400 psi.
The FHCU also evaluates compaction through visual soil profile examination. A shallow pit or spade test reveals the depth, thickness, and severity of compaction layers, as well as root penetration patterns. On compacted soils, roots grow horizontally along the top of the compacted layer rather than penetrating downward — a clear indicator that the crop is unable to access moisture and nutrients in the lower soil profile.
Compaction and Yield Loss
Documented Yield Impact
Research across Ontario's major soil types consistently demonstrates that subsurface compaction reduces crop yields by 10–30%, depending on severity, soil type, and seasonal moisture conditions. The yield impact is most severe in dry years, when compacted soils prevent roots from accessing subsoil moisture reserves.
In wet years, compacted soils drain slowly, delaying planting and creating saturated conditions that suppress root function and promote denitrification of applied nitrogen.
Why This Matters for Yield
On a 200 bu/ac corn field, a 15% yield reduction from compaction represents 30 bu/ac — or approximately $165/ac in lost revenue at $5.50/bu. Across 100 acres of compacted field, that's $16,500 in annual lost income from a single, addressable problem. See the full analysis in our compaction yield loss page.
What Is Soil Structure and Why Does It Matter?
Soil structure refers to the way individual soil particles — sand, silt, and clay — are arranged and bound together into larger units called aggregates or peds. These aggregates create the pore network that controls water infiltration, gas exchange, root penetration, and biological activity. In healthy soils, well-developed aggregates create a balance of macropores (large pores that drain excess water and allow air entry) and micropores (small pores that retain plant-available water).
Ontario soils developed on glacial parent materials approximately 12,000 years ago. The glacial till plains of southwestern Ontario — dominated by Guelph loam, Harriston silt loam, and Perth clay loam — tend to develop granular or subangular blocky structures when well managed. The lacustrine clay plains of Essex and Kent counties — Brookston clay, Beverly clay loam, Toledo silty clay — can develop massive, platy structures under intensive tillage, which dramatically restricts water movement and root growth.
Key Takeaway: Understanding and maintaining good soil structure is not optional for profitable crop production — it is foundational. Fields with degraded structure consistently underperform in yield monitors, require more inputs, and are more vulnerable to weather extremes. This is exactly what a farmland health checkup identifies.
How Soil Structure Forms
Soil structure develops through a combination of physical, chemical, and biological processes. In Ontario soils, the key structure-forming mechanisms include:
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Freeze-thaw cycles — Ontario's winter freeze-thaw action is one of the most powerful natural structure-building forces. As soil water freezes, ice crystals expand and fracture compacted layers. The annual freeze-thaw cycle in southern Ontario (typically 30–50 cycles per year in the top 15 cm) naturally regenerates structure in the surface layer — provided the soil has adequate moisture and is not sealed by a surface crust.
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Wetting and drying cycles — Repeated wetting and drying causes clay minerals to swell and shrink, creating natural fracture planes. This is particularly important in the high-clay soils of southwestern Ontario (40–60% clay), where shrink-swell activity during summer dry periods creates the characteristic blocky structure of well-managed clay soils.
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Root growth and decay — Living roots physically create channels through the soil, and when they decompose, they leave biopores that serve as preferential pathways for subsequent root growth and water movement. Deep-rooted crops like alfalfa and red clover create root channels that persist for years after the crop is terminated.
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Soil biology — Fungal hyphae physically bind soil particles into micro-aggregates, while bacterial exudates (polysaccharides) act as biological glues. Earthworm activity is particularly important in Ontario — a healthy Ontario soil may contain 100–300 earthworms per square metre, each producing casts with superior aggregation and nutrient availability compared to the surrounding bulk soil.
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Organic matter — Soil organic matter (SOM) is the primary binding agent for stable aggregates. Research from the University of Guelph's long-term rotation trials at Elora and Ridgetown consistently shows that soils with higher organic matter levels (3.5%+ in mineral soils) have significantly better aggregate stability than depleted soils (<2.5% SOM).
Soil Structure and Crop Performance
Research-Backed Yield Impact
Research from Agriculture and Agri-Food Canada's Harrow Research Station and the University of Guelph shows that structural degradation reduces corn yields by 15–25% and soybean yields by 10–20%, with the greatest impacts occurring in years with either excessive spring moisture or mid-season drought stress.
Poor structure limits crop performance through several mechanisms:
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Restricted rooting depth — Compacted or massive structural layers physically prevent roots from accessing subsoil moisture and nutrients. On many Ontario clay soils, effective rooting depth on degraded fields may be only 15–20 cm compared to 40–60 cm on well-structured fields.
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Reduced water infiltration — When infiltration rate drops below rainfall intensity, water runs off rather than entering the soil profile. On structurally degraded Ontario clay soils, steady-state infiltration rates can drop below 5 mm/hr — far less than common Ontario summer storm intensities of 20–50 mm/hr.
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Poor aeration — Roots require oxygen for cellular respiration. When macroporosity falls below approximately 10% of total soil volume, oxygen supply becomes limiting. Saturated, poorly aerated soils also promote denitrification — the biological conversion of nitrate (NO₃⁻) to nitrogen gas (N₂), resulting in direct loss of applied nitrogen fertilizer.
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Reduced biological activity — Soil microorganisms require adequate aeration, moisture, and pore space for movement and colonization. Degraded structure suppresses mycorrhizal fungal networks, earthworm populations, and the microbial communities responsible for nutrient cycling.
The FHCU Soil Structure Assessment
During the Farmland Health Check-Up, the Certified Crop Advisor evaluates soil structure using several complementary methods:
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Visual Soil Assessment (VSA) — A spade-sized block of soil is extracted from the top 20 cm and evaluated for aggregate shape, size distribution, colour, root distribution, porosity, and biological indicators (earthworm channels, root channels, fungal hyphae). The VSA provides a rapid, field-based diagnosis of structural condition.
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Aggregate stability testing — Using the slake test, representative aggregates from each field are evaluated for their resistance to disintegration when submerged in water. This reflects the strength of biological and organic binding agents.
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Penetrometer readings — Soil resistance is measured at multiple depths to identify compaction layers. Readings above 300 psi indicate moderate restriction; above 400 psi, root growth is severely limited.
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Water infiltration observation — Surface water behaviour after rainfall or irrigation provides direct evidence of structural condition. Fields where water ponds, sheets, or runs off have structural or compaction issues restricting infiltration.
Each field receives a structure score that is compared to the other two fields in the 3-field assessment, providing a clear picture of which fields have structural limitations and where they rank relative to each other.
Improving Soil Structure
Structure improvement requires a long-term, systems-based approach. Unlike nutrient deficiencies that can be corrected with a single application, structural degradation takes years to develop and years to reverse. OMAFRA Best Management Practices for soil structure improvement include:
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Reducing tillage intensity — Transitioning from full-width tillage (moldboard plow, tandem disc) to reduced tillage (vertical tillage, strip-till) or no-till preserves existing structure, protects aggregates from mechanical destruction, and allows biological structure-building processes to accumulate. Long-term no-till trials at Ridgetown demonstrate 40–60% improvement in aggregate stability after 10+ years.
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Increasing organic matter inputs — Cover crops, manure application, and returning crop residues all increase the organic binding agents that stabilize aggregates. Cereal rye, crimson clover, and oilseed radish are particularly effective cover crop species for Ontario's climate and cropping systems.
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Diversifying crop rotations — Different crops have different rooting architectures. Corn develops a fibrous root system concentrated in the top 30 cm. Alfalfa sends a taproot 1–2 metres deep. Rotating between fibrous and tap-rooted crops creates diverse pore networks throughout the soil profile.
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Managing traffic — Controlled traffic farming — confining all wheel traffic to permanent lanes — protects the vast majority of the field from compaction while allowing the inter-row soil to develop and maintain good structure.
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Timing operations to soil conditions — The single most important management decision for soil structure is refusing to work soil that is too wet. The plastic limit — the moisture content above which soil deforms rather than fracturing — varies by soil type but is a critical threshold.
Active Carbon and Soil Protein: Indicators of Biological Structural Health
Recent advances in soil health assessment have introduced two key biological indicators that directly relate to soil structure: active carbon (permanganate-oxidizable carbon, or POXC) and soil protein (autoclaved citrate-extractable protein, or ACE protein).
Active Carbon (POXC)
Active carbon measures the fraction of soil organic matter that is readily available to soil microorganisms — essentially the "fuel" that drives biological aggregate formation. Research shows that active carbon responds to management changes (cover cropping, reduced tillage) more rapidly than total organic matter, making it a useful early indicator of structural trajectory.
Soil Protein (ACE Protein)
Soil protein reflects the nitrogen-rich organic compounds in soil that serve both as nutrient reserves and as binding agents for aggregate formation. Higher soil protein levels correlate with improved aggregate stability, better water-holding capacity, and enhanced nutrient cycling.
The FHCU integrates these biological indicators alongside physical structure assessments to provide a comprehensive picture of both current structural condition and the biological capacity for structural improvement.
Ontario-Specific Considerations
Ontario's diverse physiographic regions create distinctly different structural management challenges:
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Erie Clay Plain (Essex, Kent, Elgin) — Heavy clay soils (Brookston, Toledo) with 40–60% clay content. These soils can develop excellent structure when well managed but are extremely sensitive to wet tillage. Tile drainage is essential for managing moisture content within the workable range.
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Huron Slope (Huron, Perth, Waterloo) — Loamy soils on glacial till (Guelph, Harriston) with good natural structure-forming capacity. The main threats are compaction from heavy equipment on rolling terrain and loss of organic matter from continuous row cropping.
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Sand Plains (Norfolk, Brant, Simcoe) — Sandy soils (Fox, Berrien) with inherently weak structural development due to low clay and organic matter. Structure improvement on sands relies almost entirely on increasing organic matter through cover crops, compost, and diverse rotations.
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Eastern Ontario (Dundas, Stormont, Glengarry) — Marine clay soils (Rideau clay) with unique shrink-swell characteristics. These soils form very hard, angular blocks when dry and become extremely plastic when wet, making timing of field operations especially critical.
What This Means on Your Farm
Soil health cannot be measured by one property alone. A healthy soil has desirable conditions for a combination of physical, chemical, and biological properties. The FHCU captures this multi-dimensional picture, giving you a reference point that no single soil test can provide.
Baseline for Future Management
The FHCU workbook establishes a documented baseline of your field conditions at a specific point in time. This baseline becomes increasingly valuable as you implement recommended improvements, allowing you to measure progress in soil structure recovery, organic matter rebuilding, compaction remediation, and yield trend improvements.
What This Means on Your Farm
Soil health cannot be measured by one property alone. A healthy soil has desirable conditions for a combination of physical, chemical, and biological properties. The FHCU captures this multi-dimensional picture, giving you a reference point that no single soil test can provide.
The Complete FHCU Diagnostic Package
When you complete a Farmland Health Check-Up, you receive far more than a generic report. You get a comprehensive, field-specific diagnostic package built on real Ontario soil science and tailored to your exact farming conditions. Every recommendation is grounded in OMAFRA Best Management Practices and calibrated to your soil type, landscape position, and management history.
33-Page Diagnostic Workbook
Complete field-by-field documentation of soil, drainage, erosion, and management conditions.
Yield-Limiting Factor Analysis
Clear identification of exactly why your underperforming fields aren't matching your best.
Prioritized BMP Recommendations
Ranked by yield impact and cost-effectiveness for practical implementation.
Grant & Cost-Share Connections
Links to Ontario programs that can fund recommended improvements.
Baseline for Future Tracking
Documented soil condition snapshot to measure improvement over time.
Detailed Three-Field Workbook
The official FHCU workbook documents every aspect of the assessment across your three selected fields. This 33-page diagnostic document includes:
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Client and farm information — Farm business details, commodity profile, acreage, and Environmental Farm Plan status
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Field identification and mapping — Each field mapped with latitude/longitude coordinates, conservation authority jurisdiction, quaternary watershed, and ownership details
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Soil information for each field — Soil map unit symbol, surface texture, hydrological soil group, natural drainage class, erosion factor, compaction potential, and tile drainage status
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Slope assessment — Slope class, length, and complexity for each field
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Five-year crop rotation and tillage history — Crops grown, actual yields vs. county averages, cover crop usage, tillage system, number of passes, and tillage depth for every year
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Ten-point assessment scoring — Each assessment area scored and compared between fields with specific observations and improvement targets
Yield-Limiting Factor Analysis
The most valuable output of the FHCU is the clear identification of why your underperforming fields aren't matching your best field's production. This analysis goes beyond surface-level observations to identify root causes.
Example Breakdown
A field producing 170 bu/ac corn versus 220 bu/ac on your best field may seem like a "50-bushel gap." But the FHCU breaks this down into its component causes: perhaps 20 bu/ac is lost to compaction in traffic lanes, 15 bu/ac to inadequate drainage causing delayed planting and denitrification losses, and 15 bu/ac to organic matter depletion on eroded knoll positions. Each cause has a specific remediation pathway and estimated cost-benefit ratio.
Prioritized BMP Recommendations
Not all field improvements are equal in their yield impact or cost-effectiveness. The FHCU prioritizes recommendations based on:
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Potential yield impact — Which factors are causing the greatest production losses
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Implementation cost — What will each improvement cost relative to expected return
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Time to benefit — Whether improvements deliver immediate returns (e.g., addressing compaction) or long-term benefits (e.g., building organic matter)
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Available cost-share funding — Which recommended practices may be eligible for Ontario stewardship grants
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Practical feasibility — Whether the recommendation fits within your existing equipment, timing, and management capabilities
Connection to Grants and Cost-Share Programs
Many of the improvements identified through the FHCU are eligible for cost-share funding through Ontario stewardship programs. Your advisor will identify which recommendations align with current funding opportunities, helping you leverage your FHCU results to access financial support for drainage improvements, cover crop establishment, erosion control structures, and soil remediation projects.
Key Takeaway: The FHCU report serves as supporting documentation for many grant applications, demonstrating the agronomic need for the proposed improvements and establishing the baseline conditions that the project will address.
Baseline for Future Management
The FHCU workbook establishes a documented baseline of your field conditions at a specific point in time. This baseline becomes increasingly valuable as you implement recommended improvements, allowing you to measure progress in soil structure recovery, organic matter rebuilding, compaction remediation, and yield trend improvements.
What This Means on Your Farm
Soil health cannot be measured by one property alone. A healthy soil has desirable conditions for a combination of physical, chemical, and biological properties. The FHCU captures this multi-dimensional picture, giving you a reference point that no single soil test can provide.
Slope and Landscape Assessment
Slope plays a critical role in erosion risk and yield variability across Ontario's rolling till plains. The FHCU records:
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Slope class — from level (<2%) to steep (>9%)
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Slope length — measured in feet, a key factor in water erosion potential
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Slope complexity — whether the field has uniform or complex slopes with converging water flow patterns
Watch for Complex Slopes
Complex slopes with converging flow are particularly prone to concentrated water erosion — creating finger-like channels on upper slopes and fan-shaped deposition areas downslope. These fields also experience the most severe tillage erosion, with topsoil systematically relocated from knolls to lower positions over years of downslope tillage operations.
Field Evaluation and Scoring
Using Ontario county soil survey data, your CCA advisor records the soil characteristics for each field:
The core of the FHCU is the field-level diagnostic evaluation. Your CCA advisor physically examines each field, using the ten-point assessment framework to score each factor. The scoring system compares your three fields against each other and against recognized benchmarks for your soil type and region.
Assessment areas include water erosion risk, wind erosion risk, tillage erosion evidence, subsurface compaction severity, soil organic matter levels, soil structure condition, crop rotation diversity, cover crop effectiveness, drainage adequacy, and nutrient management practices. Each area is scored, documented with field observations, and linked to specific BMP recommendations from the OMAFRA Best Management Practices series.
Select Your Three Fields
The foundation of the FHCU is the three-field comparison system. You select:
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Field #1 — Your "least challenging" or highest-performing field: This is your benchmark. It represents what your land is capable of under good conditions and good management. Choose the field where yields consistently meet or exceed county averages.
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Fields #2 and #3 — Your "challenging" or underperforming fields: These are the fields where you know something isn't right. Perhaps yields are inconsistent, drainage is questionable, certain areas always seem to struggle, or you've noticed compaction symptoms but aren't sure of the extent.
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Farms planning drainage or other infrastructure investments — Before spending $800–1,200/acre on systematic tile drainage, the FHCU ensures you're addressing the right problem and helps prioritize which fields will deliver the greatest return on investment.
Commodity Coverage
The FHCU is applicable to all Ontario field crop operations, including but not limited to:
Grain corn, seed corn, and silage corn
Soybeans (conventional and IP)
Winter wheat, spring wheat, and spring cereals
Forage production (alfalfa, timothy, mixed hay)
Canola, dry beans, and other oilseeds
Livestock operations with associated cropland
Mixed farming operations
The assessment framework is designed to accommodate the full range of Ontario cropping systems — from continuous corn operations in southwestern Ontario's clay plains to mixed grain-forage rotations in eastern Ontario's till plains. Whether you're managing 100 acres or 5,000, the diagnostic approach applies equally.
100% Free to All Ontario Farmers
The Farmland Health Check-Up is funded through the Government of Ontario and is available at absolutely no cost to any active agricultural producer in the province. There is no income threshold, no minimum acreage requirement, no commodity restriction, and no environmental compliance prerequisite. If you farm in Ontario, you qualify.
Key Takeaway: This program exists because the Ontario government recognizes that soil degradation is an economic issue — degraded soils cost farmers money through reduced yields, increased input requirements, and decreased resilience to weather extremes.
By providing free access to professional agronomic assessment, the program helps Ontario farmers identify and address the factors that are limiting their profitability.
The Ontario Context
Ontario's agricultural soils are unique. They developed on glacial deposits left by retreating ice sheets approximately 12,000 years ago. Advancing glaciers ground bedrock into fine particles, mixed existing materials, and transported them across the landscape. Retreating glaciers dropped unsorted materials (till), while meltwaters deposited sorted sands and gravels. Glacial lakes laid down flat beds of silt and clay. Wind further redistributed materials across bare post-glacial landscapes.
Local Expertise
Your assigned CCA advisor will have familiarity with the dominant soil types, cropping systems, and management challenges specific to your region. The assessment uses Ontario county soil survey data, localized yield averages, and region-specific BMP recommendations.
No Prerequisites Required
You do not need:
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An Environmental Farm Plan (though having a current 4th Edition EFP is beneficial for potential cost-share applications)
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A current Nutrient Management Plan or Strategy
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Membership in any farm organization
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Previous soil testing results (though existing data is helpful)
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Any minimum years of farming experience
How to Get Started
Booking your Farmland Health Check-Up is straightforward. Simply contact us directly, and we'll schedule a convenient time to visit your farm. Before the visit, you'll be asked to identify three fields for assessment: one that you consider high-performing and two that you believe are underperforming relative to their potential.
No Barriers
There is no paperwork, no application process, and no waiting list. The assessment typically takes a few hours of field time, and you'll receive your complete diagnostic report with prioritized recommendations.
Why This Matters for Your Bottom Line
Every bushel of corn you're not harvesting due to compaction, every tonne of soybeans lost to poor drainage, every dollar of nitrogen fertilizer that denitrifies before the crop can use it — these are direct, measurable costs to your operation. The Farmland Health Check-Up quantifies these losses and provides a clear roadmap for recovery.
Why This Matters for Yield
Ontario farmers who have completed the FHCU consistently report that the assessment revealed yield-limiting factors they were unaware of — particularly subsurface compaction and the degree to which tillage erosion had degraded their knoll positions. Many discover that their "poor" fields can be brought within 80–90% of their best field's production with targeted management changes that pay for themselves within one to two cropping seasons.
What Is the Nutrient Management Act?
The Nutrient Management Act, 2002 (NMA) is Ontario's primary legislation governing how nutrients — mainly livestock manure, but also biosolids and other non-agricultural source materials — are managed on agricultural operations across the province.
The Act was created to protect Ontario's water, soil, and air from the environmental risks associated with nutrient generation, storage, and land application. It provides the legal authority for the Province to require plans, strategies, and approvals before farmers build barns, expand livestock operations, or apply certain materials to their land.
For any Ontario farmer planning a construction project, livestock expansion, or changes to manure handling, this Act is the starting point. Understanding it is essential to avoiding costly delays and compliance issues.
What the Act Regulates
The Nutrient Management Act establishes the regulatory framework for the entire lifecycle of nutrients on Ontario farms:
Generation of nutrients from livestock operations (manure, bedding, washwater)
Storage of manure and other prescribed materials
Land application of nutrients, including rates, timing, and methods
Use of non-agricultural source materials (NASM) such as biosolids and food processing waste
Construction and expansion of agricultural buildings that house livestock or store manure
Transfer and transportation of nutrients between operations
Key Takeaway: The Act doesn't just cover manure spreading — it covers the entire chain from barn to field, including how nutrients are generated, stored, and ultimately applied.
Key Definitions Under the Act
The Nutrient Management Act establishes the regulatory framework for the entire lifecycle of nutrients on Ontario farms:
Generation of nutrients from livestock operations (manure, bedding, washwater)
Storage of manure and other prescribed materials
Land application of nutrients, including rates, timing, and methods
Use of non-agricultural source materials (NASM) such as biosolids and food processing waste
Construction and expansion of agricultural buildings that house livestock or store manure
Transfer and transportation of nutrients between operations
Nutrient
Under the Act, a "nutrient" includes any material that can be applied to land as a source of plant nutrition. This encompasses livestock manure, compost, biosolids, septage, and other non-agricultural source materials. The definition is deliberately broad to capture all materials that could impact soil and water quality.
Nutrient Management Strategy (NMS)
An NMS is a document required before constructing or expanding livestock housing or manure storage. It addresses how nutrients generated on the farm will be managed — including storage capacity, land base requirements, and compliance with Minimum Distance Separation (MDS) setbacks. An NMS must be approved by OMAFRA before a building permit can be issued.
Regulatory Authority
The Nutrient Management Act grants the Province of Ontario broad regulatory authority over nutrient management practices. Specifically, the Act empowers the government to:
Create detailed regulations prescribing standards, practices, and requirements
Require preparation and submission of nutrient management strategies and plans
Appoint provincial officers to inspect farms and enforce compliance
Issue orders, impose administrative penalties, and prosecute offences
Establish nutrient unit thresholds that trigger regulatory requirements
The Act itself sets out the broad framework. The detailed, day-to-day rules that farmers must follow are found in the regulations made under the Act — most importantly, Ontario Regulation 267/03.
Relationship to O. Reg. 267/03
One of the most common sources of confusion is the relationship between the Nutrient Management Act and Ontario Regulation 267/03. Here's how they work together:
The Act (NMA, 2002)
The framework. It establishes the legal authority, defines key terms, sets out the power to make regulations, and provides for enforcement. Think of it as the foundation.
The Regulation (O. Reg. 267/03)
The rules. It prescribes the specific requirements — nutrient unit thresholds, storage standards, setback distances, plan content, and submission processes. This is where the practical requirements live.
In Practice: The rules. It prescribes the specific requirements — nutrient unit thresholds, storage standards, setback distances, plan content, and submission processes. This is where the practical requirements live.
Approvals and Compliance
The Act establishes the approval framework that farmers must navigate. Depending on your operation, you may be required to:
Submit a Nutrient Management Strategy (NMS)
Required before constructing or expanding a livestock barn or manure storage facility. Must be approved by OMAFRA before a municipal building permit is issued.
Prepare a Nutrient Management Plan (NMP)
Required for phased-in operations generating 300 or more nutrient units, or when triggered as a condition of an NMS approval. Filed with OMAFRA.
Obtain a NASM Plan Approval
Required before applying non-agricultural source materials (biosolids, septage, food processing waste) to farmland. Approved by OMAFRA.
Enforcement and Penalties
The Nutrient Management Act includes strong enforcement provisions. Understanding these is important for every farm operator:
Provincial Officers
The Act authorizes the appointment of provincial officers who have broad powers to enter agricultural operations, conduct inspections, take samples, and issue compliance orders.
Inspections
Officers may inspect your operation without a warrant to verify compliance with the Act and its regulations. This includes reviewing records, plans, and physical infrastructure.
Administrative Penalties
The Act provides for administrative monetary penalties (AMPs) for non-compliance. These can be issued without a court proceeding and are separate from prosecution.
Strict Liability
Many offences under the Act are strict liability offences — meaning the Crown does not need to prove intent. If a violation occurred, the farmer bears the burden of demonstrating they exercised due diligence to prevent it.
Many offences under the Act are strict liability offences — meaning the Crown does not need to prove intent. If a violation occurred, the farmer bears the burden of demonstrating they exercised due diligence to prevent it.
Practical Implications for Farmers
Here's when the Nutrient Management Act is most likely to affect you:
You are building a new barn or expanding an existing one
You are increasing the number of livestock on your operation
You are constructing or modifying manure storage
Your operation generates or will generate 300 or more nutrient units
You are applying non-agricultural source materials (NASM) to your land
You are purchasing a farm with an existing nutrient management obligation
You are changing your livestock type in a way that increases nutrient generation
Tip: If you're unsure whether the Act applies, it's better to check early. Discovering a requirement after construction has started can delay your project by an entire growing season.
Common Misunderstandings
"The Act only applies to large farms."
Not true. Any farm that builds or expands livestock housing may trigger the requirement for an NMS — regardless of size. The 300 nutrient unit threshold is only one of several triggers.
"I only need a plan if I spread manure."
An NMS is about generation and storage, not application. You can trigger a requirement simply by building a barn — even if you export all your manure.
"My municipality handles everything."
Municipalities issue building permits, but they cannot issue one for livestock housing until OMAFRA has approved the required NMS. The provincial process is separate and must happen first.
"I can sort out the paperwork after I start building."
The Act requires approvals before construction. Starting without them risks orders to stop work, penalties, and having to retrofit or relocate structures.
Why This Act Matters When Building a Barn
Barn construction is one of the most common triggers for the Nutrient Management Act. When you build or expand a livestock barn in Ontario, you are increasing the nutrient generation capacity of your operation — and the Act requires that this be addressed before construction begins.
Specifically, you will need to demonstrate:
Adequate manure storage capacity for the proposed operation
Compliance with Minimum Distance Separation (MDS) setbacks
Sufficient land base for nutrient application (or confirmed export agreements)
That the proposed operation will not cause an adverse effect
You are applying non-agricultural source materials (NASM) to your land