Beck, Pieter S. A. (contributor); … - European Commission / Joint Research Centre - 2019
As part of the EU emergency measures against the pine wood nematode (PWN) (Bursaphelenchus xylophilus) laid down under Decision 2012/535/EU, Portugal should perform, outside and during the flight season of the vector, surveys of coniferous trees located in the 20 km wide buffer zone established...