06/06/2026
🌾 Mid-season ryegrass in our clients winter wheat - Here’s how we found it and provided prescription maps. Result? Only spray what needs treating.
Ryegrass is a zero-tolerance problem on arable farms. One plant sets tens of thousands of seeds, and resistance makes whole-field spraying a decision you don’t want to keep repeating. But without knowing exactly where the infestation is, blanket treatment is often the only option.
This Hampshire winter wheat farm wanted a map precise enough to drive a sprayer prescription — so that’s what we built.
🔍 What the survey found:
• Ryegrass at ~4.5% of the field area — scattered, not zoned
• Prescription spray area: just 0.92ha out of 4.70ha surveyed
• Individual nozzle control at 50 cm = 61% herbicide saving
📦 And because the multispectral data is already captured, the same flight also delivers NDVI and NDRE vigour maps — meaning one flight can produce both a precision herbicide prescription and a variable rate nitrogen map.
The prescription shapefile is delivered ready for import into standard precision ag platforms, including ISOXML for direct ISOBUS terminal upload.
👇 Full case study — detection method, sprayer technology comparison, and what happened next:
đź”— https://mclarenprecisionagriculture.co.uk/case-studies/case-study-hampshire-ryegrass-2026
đź“Ť Covering Hampshire, Berkshire, Oxfordshire, Surrey & Wiltshire
đź“ž 07908 042452
BackgroundRye grass is a zero-tolerance problem on most arable farms. A single plant sets tens of thousands of seeds, and those seeds persist in the soil for years — so a light infestation that gets to set seed compounds quickly. The usual response is whole-field herbicide treatment, which works, ...
