Rhabdocline Needlecast Increases Needle Loss of Douglas-fir Christmas Trees

Fig. 3. Effect of Rhabdocline infection and display condition on current season needle retention of Douglas-fir branches. Needle loss was measured on a 0 to 10 scale where 0 = none, 10 = 91 to 100%. Bars represent SE of 15 replications.



Image from Plant Health Progress article:
Rhabdocline Needlecast Increases Needle Loss of Douglas-fir Christmas Trees