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Tomato > Fruit > Discolored fruit

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  • Image: Cold injury 1
    Credit: Sue Morris
  • Image: Cold injury 2

    Credit: Sue Morris

  • - CLICK PHOTOS TO ENLARGE -

green arrowCold injury

  • Leaves look water-soaked and soft, then turn black
  • Fruit becomes soft water-soaked and rots
  • Leaves show injury immediately, fruit may not show symptoms for 5 to 7 days
  • Occurs at temperatures below 50° F
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green arrowSunscald
Abiotic

  • Affects fruit, young leaves and stems
  • Occurs only on tissue exposed to the sun
  • Fruit turns tan or white on exposed side, may dry out and appear wrinkled
  • Young leaves of transplants turn grey with irregular bands on the lower side
  • Young stems of transplants turn white on exposed side only
  • More information on Sunscald...
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green arrowLate Blight
Phytophthora infestans

  • Irregular watersoaked lesions on leaves, turn olive then brown
  • Leaves, stems and petioles turn brown and shrivel
  • Fruit spot is round olive colored, can cover whole fruit
  • Infected tissue is covered with white mycelia is wet weather
  • Disease spreads very rapidly in cool wet weather
  • More information on Late Blight...
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  • Image: Virus 1
    Credit: Michelle Grabowski
  • Image: Virus 2

    Credit: Michelle Grabowski

  • Image: Virus 3

    Credit: Michelle Grabowski

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green arrowVirus
Cucumber mosaic virus, tomato mosaic virus, tomato
spotted wilt virus and more

  • Leaves are mottled with yellow and light green patches
  • Leaves are misshapen; unusually long and thin like a shoestring or curled and deformed
  • Fruit have yellow blotches or brown rings
  • Plants are stunted even when neighboring plants look healthy and tall
  • More information on Virus...

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