necrotic ring spot

necrotic ring spot

[nə′kräd·ik ′riŋ ‚spät]
(plant pathology)
A virus leaf spot of cherries marked by small, dark water-soaked rings which may drop out, giving the leaf a tattered appearance.
References in periodicals archive ?
Necrotic ring spot, mildew, as well as root and crown rots flourish in cool weather on saturated soils.
It was specifically shown to be effective in controlling the following turfgrass diseases: Anthracnose, Dollar spot, Pythium, Leaf spot, Bermudagrass, Take-all patch, Fairy ring, Pink patch, Gray leaf spot, Microdochium patch, Summer patch and Necrotic ring spot.