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Lilac ringspot in the Netherlands


, : Lilac ringspot in the Netherlands. Mededel Directeur Tuinbouw 18(10): 823-828

A review of literature on the subject of ringspot of lilacs is given and a disease occurring in Netherland nurseries is described. The symptoms agree with these of ringspot as described by various authors but differ from diseases of this host reported as leafroll and mosaic. In the leaves light green to yellow spots and narrow well defined rings and wavy lines develop, as well as broad obscure partial rings and bands. There is often serious leaf distortion, and cracks and holes develop in the discolored tissues. These effects are apparently the result of local checking of growth. Sometimes large areas of the leaves, separated by a band, show a lightgreen to yellow discoloration. These are typically near the tips. The disease appears to be spread principally through grafts.

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