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ring spot

noun

Definition of ring spot

  1. 1 :  any of various plant diseases caused by viruses (genus Nepovirus of the family Comoviridae) and marked by circular lesions of usually chlorotic or necrotic tissue

  2. 2 :  a turf disease caused by an ascomycetous fungus (Leptosphaeria korrae syn. Ophiosphaerella korrae) and marked by circular patches or rings of dead grass




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