The makers of robot weeders say the machines can reduce pesticide use and be part of a more sustainable food system
“Reduced herbicide usage is one of the spectacular outcomes of precision weeding,” said Gautham Das, a senior lecturer in agri-robotics at the University of Lincoln. Destroying weeds with lasers or ultraviolet light uses no chemicals at all. But even with robots that do use herbicides, their ability to precisely target weeds can reduce the use about 90% compared with conventional blanket spraying, Das said.
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