Definitions
from The Century Dictionary.
- noun A disease affecting the leaves of the rose, maple, etc., caused by parasitic fungi, Phyllosticta, Septoria, etc. It appears in dark spots on the leaves.
- noun The common name given to a large number of fungi which produce spots upon the leaves of plants.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Alternative spelling of
leaf spot .
Etymologies
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Examples
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You also must remove the lower leaves as they discolor from things such as early blight and leaf-spot diseases, and you should mulch your tomatoes and water them by the roots, not the leaves.
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Some plants exhibit leaf-stalks of ruby red, with central leaf-spot and nerves like in hue, producing the most beautiful effect.
Tropic Days 2003
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A bacterial leaf-spot, a leaf-spot caused by a fungus and a rust can be controlled by destroying diseased plant debris.
Chapter 9 1993
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The Virginia varieties take longer to mature (120140 days in the tropics) than the Spanish-Valencia types and are moderately resistant to Cercospora leaf-spot, a fungal disease that can cause high losses in wet weather unless controlled with fungicides (see Chapter 7).
Chapter 7 1981
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Most of the local varieties, especially in the more humid areas, are of the Virginia type which has much better leaf-spot resistance.
Chapter 7 1981
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Black walnuts suffer from leaf-spot, blight, or canker, especially in seasons when the trees have been weakened by drought.
Northern Nut Growers Association Thirty-Fourth Annual Report 1943
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Persian walnuts in some places, and nut production is very seriously affected among black walnuts by defoliation prematurely, either because of drought or leaf-spot.
Northern Nut Growers Association Thirty-Fourth Annual Report 1943
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Mr. Durand: What is the best spray for leaf-spot and rust in strawberries?
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Dr. Dunstan lists leaf-spot along with some of those listed above, but adds that none are generally serious.
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The pecan has quite a number of leaf-spot fungi and most of those we have tested by spraying.
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