Cross-sector context for fuel and fuel-service use on the southwestern Ontario farm: cash-crop scale, dairy and livestock operating realities, grain-drying efficiency and emergency-allocation logic, and the county-level grain acreage that anchors the commercial-elevator footprint.

Concept: CPA emergency propane allocation hierarchy (Tier 1/2/3)

Confidence: Inferred — descriptive from Canadian Propane Association (CPA) public statements during the 2019 CN rail strike; not a published regulated standard.

In a propane supply emergency, the Canadian Propane Association operates an informal tiered allocation hierarchy. The hierarchy is not statutory; it reflects industry practice during the 2019 CN rail strike (see (unpublished reference)) and remains the operative reference.

Tier 1 — top priority:

• Hospitals
• Water treatment plants
• Major public infrastructure / emergency services / daycares
• Residential home heating

Tier 2 — next priority:

• Livestock barn heat (specifically when livestock welfare is at stake)

Tier 3 — lower priority:

• General agriculture (grain drying, greenhouse heating where no livestock is present)
• General commercial

Source quote (CPA, to RealAgriculture, November 2019): "Tier one, top priority, include hospitals; water treatment plants; places with major infrastructure or key services; and homes ... agriculture would fall into a lower level tier, unless the propane is needed to heat a barn with livestock in it."

Grain-drying-specific evidence (2019). Top Crop Manager (November 2019, citing Financial Post): "As of Nov. 22, no propane was going to grain dryers, and fuel supplies to eastern Ontario farms were dwindling." Distributors "told grain farmers in southern Ontario not to expect further shipments of propane for grain drying as home heating and other essential services have priority" (Top Crop Manager). A grain dryer without livestock on-site sits at the bottom of the de facto allocation list (see (unpublished reference) for the operational consequence).

Broader agriculture evidence (2019). Ontario Federation of Agriculture, in Global News (November 2019): "Many of our customers have already been notified by their propane suppliers that they're going to be cut off." The OFA quote covers the full ag exposure — greenhouses without livestock, grain dryers, and any mixed operation lacking a livestock-welfare hook all received cut-off notices.

Implication for agricultural customers. Greenhouses without livestock and grain dryers sit at the bottom of the supply hierarchy in an allocation event (see (unpublished reference) for greenhouse-specific pre-positioning logic).

Sources: RealAgriculture, Nov. 2019; Top Crop Manager (Nov. 2019, citing Financial Post); Global News (Nov. 2019); Canadian Propane Association public statements.

Concept: Grain dryer efficiency — mixed-flow vs cross-flow and heat-recovery retrofits

Confidence: Verified for OMAFRA savings ranges; Estimated for payback periods.

OMAFRA Publication 24-005 (see (unpublished reference)) confirms mixed-flow and counter-flow dryers are more efficient than cross-flow. Cross-flow remains the most-installed Ontario design (see (unpublished reference)).

Mixed-flow vs cross-flow. Sukup's published spec claims mixed-flow with vacuum cooling reduces fuel consumption by 20–30% vs traditional pressure-heat/pressure-cool cross-flow (flag: US OEM). At a 1,000-acre SW Ontario operation drying 180,000 bu/year, the 20–30% range corresponds to approximately $20,000–$30,000/year in propane savings at May 2026 prices (see op-ag-propane-price-benchmark-2026-05).

Heat-recovery retrofits (OMAFRA Pub 24-005 Table 1). Fuel savings up to 15% and throughput gains up to 30% when grain moves hot from the dryer to a steeping/cooling bin (wet bin / dry bin / cooling bin architecture). Purdue and Iowa State Extension data corroborate similar ranges (flag: US sources). Payback for OEM heat-recovery options on a new install is typically 3–5 harvest seasons at Ontario propane prices and SW Ontario throughput (Estimated).

Efficiency tuning levers (OMAFRA, in priority order):

1. Measure first — calculate BTU/lb water removed before changing anything.
2. Burner calibration — proper fuel/air mix; Ontario dryers often run rich.
3. Plenum temperature — raising plenum within manufacturer limits cuts fuel per bushel; corn tolerates 220°F plenum readily.
4. Insulation and air-seal of heat exchanger.
5. Heat-exchanger and screen condition — debris cuts capacity and efficiency.

Replacement-cycle decision. Typical Ontario dryer life is 20–30 years. An operator approaching replacement should compare a new cross-flow with heat recovery against a new mixed-flow (Sukup Mixed-Flow, Mathews Delta or Fusion).

Wet-bin / dry-bin architecture (best practice):

• Wet bin sized for ≥24 hours of combine output.
• Dryer sized to clear the wet bin in 18–24 hours.
• Cooling/dry bin sized to receive hot grain at 17% and steep / cool 2 points to 15%.
• Long-term storage sized for full-season output + 15–20% marketing buffer.

Sources: OMAFRA Publication 24-005 Reducing Energy Use in Grain Dryers (Dyck, Clarke, Dayboll, March 2024); Sukup Manufacturing spec pages (US OEM-flagged); Purdue Extension and Iowa State Extension corroborating data (US-flagged).

Concept: Grain dryer types and OEM installs in SW Ontario

Confidence: Verified for OEM specifications (US OEM-flagged sources); Estimated for Ontario installed share.

Five dryer categories cover the SW Ontario installed base. US-OEM spec figures are flagged — Ontario field performance differs from US testing conditions.

Category	Common Ontario installs	Throughput	Burner capacity	Vapor-draw notes
Continuous cross-flow portable	GSI 1100/1200/1300; Sukup Single-Fan Axial T-series; Mathews Company 690C, 820, 1180	GSI 1100: 420–1,160 BPH all-heat 5-pt; GSI 1200: 400–730 BPH dry+cool / 680–1,160 BPH all-heat 5-pt; Mathews 1180: 1,700 BPH heat/cool / 2,300 BPH all-heat 5-pt	GSI Quiet Dryer 4.5 M BTU/hr per heater; portables 2.5–4.5 M BTU/hr	LP needs internal vaporizer; 7–10 PSI at burner
Continuous mixed-flow	Sukup Mixed-Flow (vacuum-cool); Mathews Delta/Fusion; MFS Stormor	500–2,400 BPH typical	3–8 M BTU/hr	External vaporizer common
Tower dryer (commercial)	GSI T- and F-series 1,200–7,000 BPH; Mathews; Zimmerman	1,200–7,000 BPH	6–20+ M BTU/hr	Always external vaporizer; 30,000 USWG manifolded
Batch dryers	Older Sukup, MFS, Farm Fans (declining share)	200–600 BPH	1.5–3 M BTU/hr	Often single 1,000 USWG
In-bin natural-air / low-temp with propane top-heat	Niche on smaller SW Ontario operations	1–1.5 CFM/bu	<1 M BTU/hr	Limited to ≤24% incoming

Cross-flow remains the most-installed Ontario design, despite mixed-flow and counter-flow being more efficient — see (unpublished reference).

SW Ontario dealer ecosystem: Anmar Systems, Wentworth Ag (BP Ag Systems), K&S Millwrights, and others. Mathews Company Legacy Series (440–5,810 BPH) is increasingly popular for new expandable installs.

Sources (US OEM — flagged): GSI grainsystems.com, Sukup.com, mathewscompany.com spec pages; OMAFRA Publication 24-005 (see (unpublished reference)).

Concept: Ontario grain acreage and yields (2024–2026)

Confidence: Verified — Statistics Canada The Daily primary releases.

Per StatCan The Daily (March 5, 2026): "more than 60% of all corn for grain in Canada is grown" in Ontario, and Ontario produces "the most soybeans" in Canada. Per The Daily (December 5, 2024), Ontario farmers grow "almost two-thirds of Canada's corn." Both crops concentrate in the SW Ontario corn-soy-wheat belt.

Provincial acreage and yield (StatCan Table 32-10-0359-01, via The Daily):

Crop	2024 harvested	2025 harvested	2026 planted (intentions)
Corn for grain	2.1 M ac; 178.7 bu/ac; 9.6 Mt	2.1 M ac (+1.0%); 175.6 bu/ac (−2.4%); 9.5 Mt (−1.4%)	2.3 M ac (+5.4% on planted)
Soybeans	3.1 M ac; 51.8 bu/ac; 4.4 Mt	2.9 M ac; 50.8 bu/ac; 4.0 Mt	~2.9 M ac (+0.2%)
Winter wheat	1.0 M ac (est.)	1.2 M ac; 89.6 bu/ac; 2.9 Mt	Down nationally; Ontario still dominant

Typical yields (OMAFRA Pub 60 Field Crop Budgets, 2024 ed.):

• Corn for grain: 170–200 bu/ac typical in SW Ontario; budget assumption 181 bu/ac at 2,800 CHU on clay loam.
• Soybeans: 50–55 bu/ac typical.
• Winter wheat: 80–90 bu/ac typical; 2025 Ontario record near 100 bu/ac per GFO (Ontario Grain Farmer, November 2025).

For county-level breakdown see (unpublished reference).

Sources: Statistics Canada The Daily — March 12 2025, June 27 2025, September 17 2025, December 4 2025, March 5 2026; StatCan The Daily "Production of principal field crops, November 2024" (December 5, 2024); OMAFRA Publication 60 Field Crop Budgets (January 2024).

Concept: SW Ontario commercial elevator and custom grain-drying footprint

Confidence: Inferred — no published province-level on-farm-vs-custom drying split; named operators verified from public facility pages and trade press.

Ontario's commercial elevator network provides hundreds of tonnes per day per site of custom drying capacity. On-farm drying remains the majority share at peak because corn typically comes off too wet to truck efficiently.

Named SW Ontario commercial dryers:

• BroadGrain Commodities — Seaforth (3963 Perth Road 183) and Brinston facilities.
• Hensall Co-op — multiple sites across SW Ontario.
• Arva Grain — Arva and Seaforth locations.
• Numerous independent country elevators represented through the Ontario Agri Business Association (OABA).

Custom drying economics. Per-point/bushel custom charges vary by elevator, with shrink factors that can effectively raise the price above on-farm propane equivalent at moisture removals above 8 points. Operators compare on-farm propane (see (unpublished reference)) against elevator quotes using the GFO Grain Drying Cost Calculator (see (unpublished reference)).

Sources: BroadGrain Commodities facility pages; Ontario Agri Business Association member directory.

Concept: SW Ontario county-level grain acreage (2024 Agricorp Production Insurance)

Confidence: Verified for named counties (Huron, Middlesex, Elgin, Haldimand, Brant 2024); Estimated for current-year figures in Perth, Oxford, Wellington, Norfolk.

Agricorp 2024 Insured Acres (Production Insurance), soybean detail:

County	2024 insured soybean acres	Soybean AFY (bu/ac)
Huron	167,622	52
Middlesex	137,962	52
Elgin	95,573	52
Haldimand	82,506	43
Brant	31,081	47

Perth, Oxford, Wellington, and Norfolk each show >50,000 insured corn acres per 2021 Agricorp data; current-year county-level figures require a fresh pull from the OMAFA dataset below.

Canonical county source. Live county figures for all SW Ontario counties are published in the OMAFA "Ontario field crop area and production estimates by county" dataset on data.ontario.ca — files ctygcorn.xlsx and ctysoy.xlsx, last updated March 4, 2025, covering 2004–2024. For any page anchored to county acreage numbers, pull from that dataset rather than from this entry.

Provincial context in (unpublished reference).

Sources: Agricorp 2024 Insured Acres by County (Production Insurance, July 2024); OMAFA "Ontario field crop area and production estimates by county" (data.ontario.ca, updated March 4, 2025).

Reference: GFO Grain Drying Cost Calculator

Confidence: Verified (resource exists; URL not pinned in this entry).

The Grain Farmers of Ontario (GFO) Grain Drying Cost Calculator is the industry-standard customer-facing tool for comparing on-farm drying against commercial elevator drying on a per-year basis.

What it does. Takes the year's expected wet bushels and moisture, propane price, electricity cost, and elevator quote (per-point/bushel rate + shrink factor) and returns the per-bushel cost of each pathway. The answer flips with volume, dryer age, and intake moisture — there is no universal on-farm-vs-elevator answer.

Where it's referenced. Ontario Grain Farmer magazine and Farmtario cite the calculator in drying-season coverage each fall.

Related concepts: (unpublished reference), (unpublished reference).