Development of a Rapid Method Using Oxalic Acid to Assess Resistance Among Hosta Cultivars to Petiole Rot Caused by <i>Sclerotium rolfsii</i> var. <i>delphinii</i>

Fig. 2. Excised leaf (cv. Tardiflora) showing cotton swab onto which a droplet of oxalic acid was dispensed.



Image from Plant Health Progress article:
Development of a Rapid Method Using Oxalic Acid to Assess Resistance Among Hosta Cultivars to Petiole Rot Caused by Sclerotium rolfsii var. delphinii