Scirrhia acicola [syn. Mycosphaerella dearnesii] on pine trees [Pinus] attenuata x radiata in Aquitaine region [France]

aquitaine aquitania arbre forestier arrachage arrancado contamination control cultural control de enfermedades cultural control disease control forest trees hybride hybrids infection lifting lutte culturale mortalidad mortalite mortality pathogenic fungi pinus radiata scirrhia symptome symptoms