Prunus necrotic ringspot
Disease
Prunus necrotic ringspot
Prunus Necrotic Ringspot Virus (PNRSV)
Distribution: Common to all fruit-growing regions in eastern North America.
Individual branches or the entire tree shows delayed budbreak or foliation, stunted wavy leaves, and shortened blossom pedicels in spring. Leaves develop chlorotic spots, lines, or rings as they emerge (A). In severe cases, chlorotic areas become necrotic and fall out, leaving the leaves "shot-holed" or tattered (B). Fruit maturity may be delayed, and fruit may be marked (C). In other cases, trees may develop symptoms as described one year and then remain symptomless in subsequent years ("shock" symptoms).