Cross-Species Herbicide Sensitivity Baseline, Germany (ECHCG, CHEAL & AMARE)
Description
This dataset characterises the herbicide sensitivity of three summer-annual weed species — Echinochloa crus-galli (ECHCG), Chenopodium album (CHEAL) and Amaranthus retroflexus (AMARE) — against two ALS-inhibitor herbicides (HRAC Group 2) relevant to German maize and sugar-beet cropping systems.
Field-collected populations were tested in greenhouse biotests under identical, standardised conditions, enabling a direct cross-species comparison of herbicide performance and establishing a sensitivity baseline against which future shifts can be measured. Since both herbicides were tested on all three species using the same protocol, the dataset allows for a direct comparison of the active ingredients across the target weeds.
Data Content
- 275 field-collected populations: AMARE 34 · CHEAL 126 · ECHCG 115
- 2 ALS-inhibitor herbicides (Foramsulfuron/Nicosulfuron), each tested at the 1× recommended field (screening) dose
- 383 population × herbicide records (long / tidy format)
- Visual efficacy (% control) scored at DAT28 at the 1× screening dose
- Binary sensitivity classification: baseline vs reduced sensitivity (flag triggered when efficacy < 75% at the 1× dose)
- Approx. location, sampling date, crop context, Landkreis and federal state per population
Methodology
- Field-collected seeds from the Agris42 monitoring network and farmer cooperations (2017–2024)
- Greenhouse biotests under standardised, controlled conditions (GEP-certified)
- Spray-robot application for precise dose delivery
- Efficacy scored visually as % control at DAT28
- Sensitivity flag triggered when efficacy < 75% at the 1× recommended dose
- Reference sensitive population per species included in every greenhouse run
- Germany filter: Approx. location points spatially joined to German Landkreise; points outside Germany discarded
Context & Typical Use Cases
- Early resistance detection: a sensitivity baseline for these three species against ALS herbicides, against which future shifts toward reduced sensitivity can be detected.
- Cross-species benchmarking: compare herbicide efficacy across grass (ECHCG) and broadleaf (CHEAL, AMARE) species under identical conditions.
- Product portfolio analysis: identify which active retains the broadest efficacy across the key row-crop weeds.
- Regulatory / stewardship data: support efficacy claims and stewardship submissions for ALS herbicides in maize and sugar beet.
Extension Options
- 0.5× dose-level efficacy and full dose-response curves (ED50 / ED90) for selected populations
- Additional herbicide active ingredients (e.g. species-specific actives tested on CHEAL / ECHCG)
- Additional species on request
- 2025–2026 monitoring update once those greenhouse biotests are entered
- Regional subset (e.g. Bavaria, NRW) or time-series subscription
PRICING
On request
Quote provided within 2 business days
Dataset ID:
26_A5
Sensitivity baseline · Biotest · Cross-species comparison
ECHCG, CHEAL, AMARE, SETSS, AMARE
2 ALS-inhibitor herbicides
ALS inhibitor (HRAC Group 2)
Germany
2017–2024
275 (AMARE 34 · CHEAL 126 · ECHCG 115)
271 of 275 populations
Crop context:
Included (maize, sugar beet)
Yes
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DELIVERY
- Structured spreadsheet (.csv)
- Species-level summary charts (PDF/PNG)
- GeoJSON with sampling locations (on request)
- Delivery within 5 business days of order