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leaf spot
noun
, Plant Pathology.
- a limited, often circular, discolored, diseased area on a leaf, usually including a central region of necrosis.
- any disease so characterized.
leaf spot
noun
- any of various plant diseases, usually caused by fungi: characterized by dark lesions on the leaves
leaf spot
- Any of various plant diseases resulting in well-defined necrotic areas on the leaves.
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Word History and Origins
Origin of leaf spot1
First recorded in 1900–05
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Example Sentences
Carnations are subject to several diseases, the worst being the “rust” (Uromyces Caryophilinus), “leaf-spot” and maggot.
From Project Gutenberg
Some plants exhibit leaf-stalks of ruby red, with central leaf-spot and nerves like in hue, producing the most beautiful effect.
From Project Gutenberg
Thus we have "shot-hole fungus," "leaf-spot" and "leaf-blight" as effects of these diseases.
From Project Gutenberg
Black walnuts suffer from leaf-spot, blight, or canker, especially in seasons when the trees have been weakened by drought.
From Project Gutenberg
In some cases the foliage is attacked by rust fungi and some injury is also done by leaf spot.
From Project Gutenberg
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