A Belgian potato grower named Luc Détroz used to spray his entire field to fight a weed that spreads underground and keeps coming back. This season he sprayed only the patches where it actually grew. Ecorobotix, based in Yverdon-les-Bains, Switzerland, announced on November 3, 2026 that its ARA robotic sprayer has gained its first AI model capable of detecting and treating yellow nutsedge, a perennial sedge that reproduces through underground tubers and causes significant crop losses.
The ARA system is a camera-guided sprayer towed behind a tractor that identifies individual plants and applies treatment only to the weeds it recognizes, rather than coating an entire field. More than 1,000 ARA units are now operating in over 20 countries, and together they have treated a combined 600,000-plus hectares since the sprayer's commercial launch, according to the company. Ecorobotix says growers using the system see an average 86% reduction in crop protection product use compared with conventional broadcast spraying.
Closing a Gap Precision Agriculture Hadn't Solved
Yellow nutsedge has long resisted precision treatment because it looks similar to surrounding crop foliage early in the season and spreads through tubers that survive standard herbicide applications. 'The new model gives growers a precision spraying option for a weed that previously had none,' said Simon Gasser, agronomist and crop algorithm product manager at Ecorobotix. Détroz's trial covered roughly 300 hectares of potatoes, one of the crops most vulnerable to nutsedge competition.
The nutsedge model is one of ten new recognition models Ecorobotix is rolling out, bringing its total library to more than 120 plant-identification models, with commercial availability for the full batch set for March 2027. The company is also offering 55 additional models as free trials, a strategy that lets growers test new detection capabilities before committing budget to them.
Where This Fits in the Robotic Weeding Race
Ecorobotix competes in a field crowded with mechanical and laser-based weeders, including UK-based Earth Rover's light-zapping CLAWS robot and various autonomous mowing and spraying platforms expanding into row-crop agriculture. Ecorobotix's approach differs by staying camera-and-chemical rather than laser-based, betting that targeted micro-dosing of existing herbicides, rather than replacing them outright, is the faster path to adoption among growers who already own sprayers and tractors.
The expanding model library also doubles as a data moat: each new weed Ecorobotix can identify widens the gap between its system and rivals building narrower detection catalogs. With regulatory pressure on herbicide volumes rising across the EU and herbicide-resistant weeds spreading in US row crops, the economic case for precision spraying is increasingly about avoiding wasted chemical rather than just cutting costs. Ecorobotix has not disclosed unit pricing for the ARA system or specified geographic rollout plans for the nutsedge model beyond its March 2027 broader release.