Phytophthora Root Rot and Stem Canker Found on Nordmann and Subalpine Fir in Norwegian Christmas Tree Plantations

Fig. 3. Four-day-old culture of Phytophthora inundata from Nordmann fir (Abies nordmanniana) on V8 agar. Photo by V. Talgø.



Image from Plant Health Progress article:
Phytophthora Root Rot and Stem Canker Found on Nordmann and Subalpine Fir in Norwegian Christmas Tree Plantations