1. UC IPM
Extensive yellowing and brown necrosis of leaves are advanced symptoms of Pierce's disease, <i>Xylella fastidiosa</i>, on foliage of a white grape variety (Chardonnay).
Extensive yellowing and brown necrosis of leaves are advanced symptoms of Pierce's disease, Xylella fastidiosa, on foliage of a white grape variety (Chardonnay).
Credit: Jack Kelly Clark