Mature Watermelon Vine Decline: A Disease of Unknown Etiology in Southwestern Indiana

Fig. 2. A field of watermelon affected by mature watermelon vine decline (right) immediately adjacent to a field of healthy muskmelon (left). Note the presence of watermelon fruit that did not sufficiently ripen due to MWVD.



Image from Plant Health Progress article:
Mature Watermelon Vine Decline: A Disease of Unknown Etiology in Southwestern Indiana