Effect of <i>Geosmithia morbida</i> Isolate and Temperature on Canker Development in Black Walnut

Fig. 5. Average canker area in black walnut trees following inoculation with two Geosmithia morbida isolates (1217 and 1218). Means not followed by the same letter are different (P = 0.05) by Tukey’s HSD test. Bars represent standard deviations.



Image from Plant Health Progress article:
Effect of Geosmithia morbida Isolate and Temperature on Canker Development in Black Walnut