Herbicide Spot Spraying - green on green

The full rate, only where it is needed

Corn marigold is one of the hardest broadleaf weeds to kill in winter wheat. The product that works, Galaxy (fluroxypyr) at 2 L/ha with an oil adjuvant, does the job. But sprayed across a whole field at that rate, it damages the wheat. That is the usual trade-off: spray hard and hurt the crop, or ease off and let the weed win.

James did neither. The field was mapped by drone and processed in CultiWise to find every patch. Out of 55 hectares, only 3 had corn marigold. The prescription map put the full 2 L/ha rate on those 3 hectares and left the other 52 untouched.

The result was 98% control. The €38 to €39 per hectare cost applied only to the 3 hectares that were actually sprayed, not to the whole field. The other 52 hectares, 95% of the wheat, were left completely untouched, and never put at risk from a product that would have set the crop back at full-field rates.