Feu bactérien
Erwinia amylovora (Burrill) Winslow et al. Fire blight A (photo : William Turechek – United States Department of Agriculture, Agricultural Research Service) B (photo : William Turechek – United States Department of Agriculture, Agricultural Research Service) C (photo : William Turechek – United States Department of Agriculture, Agricultural Research Service) D (photo : Mid-Atlantic Orchard Monitoring Guide) Hôtes Pommier, […]