Danish researchers are developing a way to reduce the use of dodgy chemicals
in farming by getting a robot to do the weeding.
They have built a device called a Hortibot that can navigate fields and is
designed to pull up weeds or spray them precisely with herbicides to minimise
the environmental impact.
The Hortibot is not only cleaner and less wasteful than blanket spraying by
tractors, it is better for the soil, according to
a
report in MIT Technology Review.
The heavy tractors usually used for the task can compact the soil by as much
as a metre, making it hard for roots to penetrate, according to scientists at
the Institute of Agricultural Engineering at Aarhus University, in Horsens,
Denmark. The 245Kg Hortibot is said to be about a fortieth the weight.
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