Eagle Ops Scheduler

What it is

A quick-lookup reference card for the FRAC fungicide codes that matter on UK / Ireland greens-area programmes. One row per code: number, MoA group, target site, named active ingredients, FRAC-published resistance risk, and UK approval status.

This is a reference entry, not a doctrine entry. For the why and how to rotate, see fungicide-resistance-management-uk. For each code, the named actives are the FRAC 2025 enumeration filtered to those that appear on UK turf-relevant labels (historical or current).

Codes used on UK greens (penetrant + multi-site)

FRAC 3 — DMI / SBI: Class I

Group name: DMI-fungicides — demethylation inhibitors [frac:code-list-2025]
Target site: C14-demethylase in sterol biosynthesis (erg11 / cyp51)
Named active ingredients (UK-relevant subset): propiconazole, tebuconazole, prothioconazole (triazolinthione), flutriafol, difenoconazole, myclobutanil, mefentrifluconazole, metconazole
FRAC resistance risk: Medium
Cross-resistance: within SBI Class I (triazoles + imidazoles); none to other SBI classes
UK status: in current use
Target diseases (turf): dollar spot (Clarireedia jacksonii), Microdochium patch, anthracnose, take-all

FRAC 7 — SDHI

Group name: Carboxamides — succinate dehydrogenase inhibitors [frac:code-list-2025]
Target site: mitochondrial complex II (succinate dehydrogenase, sdh gene)
Named active ingredients (UK-relevant subset): boscalid (pyridine- carboxamide), fluxapyroxad, isofetamid (phenyl-oxo-ethyl thiophene amide), benzovindiflupyr, penthiopyrad, sedaxane, fluopyram (pyridinyl- ethyl-benzamide), pydiflumetofen
FRAC resistance risk: Medium to High
Cross-resistance: within Group 7; sdh mutations at H/Y or H/L codons 257/267/272 or P225L (species-dependent)
UK status: in current use
Target diseases (turf): dollar spot, Microdochium patch, brown patch, anthracnose

FRAC 11 — QoI / strobilurins

Group name: QoI-fungicides — Quinone outside Inhibitors [frac:code-list-2025]
Target site: cytochrome bc1 complex at the Qo site (cyt b gene)
Named active ingredients (UK-relevant subset): azoxystrobin (methoxy-acrylate), pyraclostrobin (methoxy-carbamate), trifloxystrobin (oximino-acetate), kresoxim-methyl, mandestrobin (methoxy-acetamide), fluoxastrobin (dihydro-dioxazine), picoxystrobin
FRAC resistance risk: High
Cross-resistance: full cross-resistance across all Code 11 members for G143A mutants (cyt b); F129L is the secondary mutation
UK status: in current use
Target diseases (turf): dollar spot, Microdochium patch, brown patch, anthracnose, take-all

FRAC M 05 — chloronitriles (multi-site contact)

Group name: chloronitriles (phthalonitriles) — unspecified mechanism [frac:code-list-2025]
Target site: multi-site contact activity
Named active ingredient (UK-historical): chlorothalonil
FRAC resistance risk: Low (M-class header: "generally considered as a low risk group without any signs of resistance developing to the fungicides")
Cross-resistance: none (multi-site)
UK status: withdrawn EU 2020 — see withdrawn-actives-uk-reference
Historical role: the doctrinally-preferred rotation partner for the penetrant classes pre-2020; post-withdrawal the M5 partner role is operationally lost to UK supes

Withdrawn-class baseline (historical reference)

FRAC 1 — MBC / benzimidazoles

Group name: Methyl Benzimidazole Carbamates [frac:code-list-2025]
Target site: β-tubulin polymerisation
Named active ingredients (UK-historical): carbendazim, benomyl, thiabendazole
FRAC resistance risk: High
Cross-resistance: positive within Group 1; negative cross- resistance to N-phenyl carbamates. Target-site mutations: E198A/G/K, F200Y in β-tubulin
UK status: withdrawn — see withdrawn-actives-uk-reference
Historical relevance: the resistance pressure FRAC classifies as High played out on UK turf before withdrawal; included here as doctrine-illustrating reference rather than current-use code

How to use this card

The doctrine entry fungicide-resistance-management-uk covers the why — climate-pressure compounding, the chemistry-loss context, the cultural-first IPM frame, the "rotate-across-codes" rule. This card covers the what:

"What FRAC code is product X?" — find the active ingredient above. Track the FRAC code (not the brand), per fungicide-resistance-management-uk §"What 'rotation' actually means"
"What's the rotation rule for code N?" — see the doctrine entry §"FRAC N — ..." sub-section for the rotation partner per group
"Why is FRAC 11 the highest-risk repeat-class?" — G143A confers full cross-resistance across all Code 11 members, so a QoI back-to- back from a different sub-family is not rotation. See doctrine entry
"What can replace chlorothalonil's M5 role?" — there is no direct successor in the UK approval inventory; the operational consequence is documented in withdrawn-actives-uk-reference and the cultural-first IPM frame in itm-parkland-greens-rA

Scope and limits

This card lists only the FRAC codes that show up on UK greens-area programmes (3, 7, 11, M5 in current use; 1 as withdrawn reference). The full FRAC Code List 2025 catalogues ~50 MoA groups; the omitted ones are either non-turf-relevant or absent from UK approval.
Named active ingredients are the FRAC 2025 enumeration filtered to turf-relevant labels. Some FRAC 2025 group members (e.g. bifemetstrobin, coumoxystrobin in Group 11) are listed by FRAC but not registered on UK turf labels; those are omitted here to keep the card operationally useful rather than encyclopaedic
No specific product names (brand names) — products combine one or more actives + adjuvants and change with re-registration. The active-ingredient + FRAC-code level is the durable lookup; product names belong on each course's spray record
Resistance-risk classifications are FRAC-published, not UK-specific. A FRAC "Medium" risk for Group 3 reflects global resistance pressure; UK C. jacksonii populations may have higher or lower local resistance status — see fungicide-resistance-management-uk §"The C. jacksonii resistance evidence" for the operational read

fungicide-resistance-management-uk — the doctrine companion to this reference card; covers UK climate- pressure compounding, rotation discipline, cultural-first IPM frame, and when-to-deviate exceptions
withdrawn-actives-uk-reference — chemistry-loss baseline; lists the withdrawn UK actives by year and reason (chlorothalonil EU-2020, carbendazim, iprodione 2018)
dollar-spot-management — operational IPM doctrine for the disease where FRAC 11 G143A pressure is sharpest
microdochium-snow-mould — the post-iprodione "products less effective" UK pressure where FRAC 3/7/11 rotation discipline is most binding
dollar-spot-itri-koch-program — forward-pointer to the 2026–2028 Koch research programme on alternatives to penetrant-class escalation; eventual successor doctrine
sprayer-calibration-handheld-bigga-nsts — the operational counterpart to FRAC-rotation discipline: an under-applied tank is the resistance-driving failure mode for the remaining chemistry catalogued above

FRAC Codes Reference — UK Turf Fungicide Quick-Lookup