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sooty mold

Plant Pathology. a disease of plants, characterized by a black, sooty growth covering the affected parts, caused by any of several fungi.
any fungus causing this disease, as molds of the genera Capnodium, Phragmocapnias, and Scorias.
1900-05 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for sooty mold
  • The ants cultivate the fungus, turning it into a sooty mold that acts as living cement, reinforcing the structure of their traps.
  • sooty mold fungi in turn can reduce photosynthesis and plant vigor.
  • Effect: occasional high populations result in profuse honeydew, sooty mold.
  • Psyllids leave waxy tubules and honeydew, on which sooty mold can develop, damaging the plant.
  • Psyllids leave waxy tubules and honey-dew, on which sooty mold can develop and damage the plant.
  • When feeding, the scale produce much honeydew, which encourages the growth of sooty mold.
  • Honeydew and sooty mold on all plants stages is evidence of soybean aphid presence.
  • The honeydew coats the leaves of the tree, encouraging sooty mold to grow.
  • They also produce honeydew that allows sooty mold to grow.
  • By mid-summer, a badly infested tree will be blackened by the sooty mold growth on leaves and fruit.
Encyclopedia Article for sooty mold

black mold

plant disease characterized by splotchy black stain or coating on leaves, stems, and fruit, composed of dark fungal threads (Capnodium, Fumago, and Scorias species) that grow in flowing sap or on honeydew excreted by aphids and other sucking insects. The condition is unsightly but usually not harmful. Control includes spraying or dusting for sucking insects, washing off sticky coatings of sap or honeydew on plant surfaces, and avoiding the wounding of plants.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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