In agriculture, weed control is one of the most expensive and complex challenges. Labor is scarce, herbicides are losing their effectiveness and European regulations impose increasingly strict limits on the use of chemicals. To respond to this scenario, LaserWeeder G2 was born, a laser weeding robot developed by the US company Carbon Robotics.
Already in use in over 150 farms in 14 countries, this machine promises to eliminate up to 600,000 weeds per hour, thanks to an artificial intelligence system capable of distinguishing each unwanted plant with sub-millimeter precision.
All this, without damaging the crops and without moving the earth.
How the LaserWeeder G2 robot works
The LaserWeeder G2 is a towed tool that combines artificial vision, powerful diode lasers and NVIDIA GPUs to recognize and target every single weed in real time.
Each 20-foot (about 6-meter) unit includes twelve independent modules, each with two GPUs and high-resolution cameras. The lasers, 240 watts each, burn the growth point of the weed, destroying it without disturbing the soil or affecting the crops.
According to Carbon Robotics, the machine can cover between 1.5 and 3 acres per hour (0.6–1.2 hectares), depending on weed density and row placement. Impressive numbers, even if they represent maximum performance in optimal conditions.
The real innovation of the LaserWeeder lies not only in the mechanics, but in the continuous learning system. Every time the robot crosses a field, it records high definition images which feed a huge proprietary database: today more than 65 million labeled shots.
This data is used to improve the so-called “large plant model”, an AI model trained to recognize the different weed species with ever greater precision. With each software update, the machine becomes more “intelligent”, adapting to new crops, light conditions and different soils.
The technology is ready, but not for everyone
The official price has not been made public, but estimates are around a million dollars per car.
The company promises a return on investment in 2-3 years, thanks to manpower reduction and operational continuity, even at night or in difficult conditions. According to a study published by FarmProgresstotal operating costs could be around $267 per acre (4,047 square meters), including maintenance, energy and depreciation.
However, there is also the issue of safety: the lasers used are of a high class, so rigorous protocols are needed to prevent risks to people, animals and reflective surfaces. Furthermore, in very arid areas, it is necessary to monitor the risk of accidental fires caused by the heat of the laser beams.
Revolution or niche prototype?
The LaserWeeder G2 represents one of the most concrete steps towards cleaner and more sustainable agriculture, capable of reducing the use of herbicides without sacrificing productivity.
However, the declared performance — like the famous 600 thousand weeds an hour — remain peak values, not always replicable in every field. The real effectiveness depends on environmental, light and technical factors, but the direction is clear: the future of weed control will be increasingly intelligent, selective and chemical-free.
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