Grass weed herbicide resistance testing
Order a standard herbicide resistance test for grass weeds
Check whether grass weeds in your field, such as black-grass, Italian ryegrass, wild oats and brome, are resistant to standard herbicide applications.
Our standard herbicide resistance tests have been designed to provide the most relevant results based on the resistance profiles of individual weed species in the UK.
- The cost to test black-grass, Italian ryegrass, and wild oats with standard herbicides is £250.
- The cost to test brome is £200.
How to collect your grass weed seed sample in the field
- Collect a small mug of seed; avoid collecting intact heads as they are unlikely to be ripe.
- When you collect a mug of seed, allow the seeds to dry in a container for a few days.
- Place dry seeds directly in a paper envelope (do not enclose in polythene).
- Download and fill in the order form and include in the envelope with your sample.
- Post via first class to Herbicide Resistance Tests, ADAS Boxworth, Cambridge, CB23 4NN. An invoice will be sent afterwards.
Ready to send your sample?
When you have collected your sample, post your sample along with the order form to:
Herbicide Resistance Tests, ADAS Boxworth, Cambridge, CB23 4NN
If the herbicide you need is not listed as part of our standard herbicide resistance testing, please contact us at weeds@adas.co.uk.
What happens after you send your seed sample to us
Once we receive your sample, ADAS will acknowledge with a receipt.
As most grass weeds have a dormancy period, testing will not begin until 2–4 weeks after seeds arrive. Tests then take 8–10 weeks to complete, with samples being sown every 2–3 weeks.
Please note: samples with poor germination may result in delayed or failed tests.
Results will be sent as soon as they are available.
As a guide, if seeds are received by the end of July, results will normally be available by the end of September. Samples must be received by 1st October to guarantee testing in the year of collection.
Order your standard herbicide resistance test