Stock Photo - 30 April 2019, North Rhine-Westphalia, Heek: On behalf of Straßen.NRW, a tractor of a contracting company sprayed with a biocide on the motorway rest areas along the A31 Oaks and thus fought the oak processionary moth (aerial photograph with a drone). The fight against the caterpillars of the oak processionary moth starts along the entire A31. The plan is to spray large oak stands or oak trees that have already been infested. You start at the parking lots, then the free stretch follows the A31. Photo: Guido Kirchner/dpa. - Heek/North Rhine-Westphalia/Germany

Stock Photo: 30 April 2019, North Rhine-Westphalia, Heek: On behalf of Straßen.NRW, a tractor of a contracting company sprayed with a biocide on the motorway rest areas.

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