black softens while the red gets the most. and the onboard computer automatically drives the tractor to the weed infested areas. the quantity of herbicide is measured precisely. two weeks later the drone flies to the treated test area to check the results things look promising. because we used up to sixty percent less herbicide last year dealing with missiles and the sugar beets. using a drone has economic but mostly environmental benefits and since i only treat those areas where we d start growing. drones or even finding a place in biodiversity research such as rescuing endangered butterflies. here scientists from the technical university of munich are launching a quadrille copter. it s high reza. lucian camera allows them to find ideal