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sunscald

[suhn-skawld] /ˈsʌnˌskɔld/
noun
1.
injury to the leaves, bark, or underlying tissues of woody plants due to the combined effects of heat, humidity, and intense sunshine.
Origin
1850-1855
1850-55; sun + scald1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for sunscald
  • It may require careful siting in areas prone to drought and also to avoid sunscald.
  • sunscald lowers quality by making the melons less attractive and may cause them to rot.
  • Buyers usually will not purchase watermelons with sunscald damage.
  • All smooth bark deciduous tree trunks must be wrapped with waterproof paper according to specifications to prevent sunscald.
  • Recently isolated trees, in particular, are subject to wind throw on shallow soils and susceptible to winter sunscald.
  • Do not plant near concrete or asphalt as this increases the risk of trunk sunscald or frost cracks.
  • Loss of leaves also exposes developing fruit to the sun, resulting in sunscald.
  • Under extremely high temperatures, the eggplant fruit are also prone to sunscald.
  • The higher levels of sunlight may cause sunscald on the trunks and branches.
  • The advantage is that the plant has more leaf area for photosynthesis and to protect developing fruit from sunscald.
Encyclopedia Article for sunscald

common disorder of exposed, thin-barked trees, shrubs, and other plants. Dead patches form on the sun-exposed trunk and limbs of young trees, often those recently transplanted to open areas from nurseries where they were shaded by nearby trees. Evergreens and shrubs show scorched foliage and shoot dieback in dry, sunny, and windy spots, especially in very early spring. Control includes wrapping young tree trunks, applying whitewash, white latex paint, or an antidesiccant (to retard loss of plant moisture), and growing susceptible plants in more protected locations. Evergreens, especially in winter and very early spring, should be protected from too much sun and from cold, drying winds. Much sunscald injury can be avoided by watering plants thoroughly in dry autumns before the soil freezes and applying a mulch to keep the soil frozen until spring, when full-scale plant activity resumes and roots can provide the moisture the top growth requires. See also scorch.

Learn more about sunscald with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Word Value for sunscald

11
15
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