ring spot
noun
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
: a turf disease caused by an ascomycetous fungus (Leptosphaeria korrae synonym Ophiosphaerella korrae) and marked by circular patches or rings of dead grass
Examples of ring spot in a Sentence
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Necrotic Ring Spot
Cool, wet growing conditions followed by heat and drought are favorable for necrotic ring spot to flourish.
—
Megan Hughes, Better Homes & Gardens, 10 Sep. 2024
There are several forms of patch diseases—necrotic ring spot, summer patch, and brown patch are all similar in appearance and management.
—Megan Hughes, Better Homes & Gardens, 4 Aug. 2024
Bright yellow to white line patterns, ring spots and/or mosaics on some of the leaves.
—Rita Perwich, San Diego Union-Tribune, 6 Apr. 2024
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Megan Hughes, Better Homes & Gardens, 10 Sep. 2024
There are several forms of patch diseases—necrotic ring spot, summer patch, and brown patch are all similar in appearance and management.
—Megan Hughes, Better Homes & Gardens, 4 Aug. 2024
Bright yellow to white line patterns, ring spots and/or mosaics on some of the leaves.
—Rita Perwich, San Diego Union-Tribune, 6 Apr. 2024
Cite this Entry
“Ring spot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ring%20spot. Accessed 28 May. 2025.
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