2017 Florida Plant Disease Management Guide: Watermelon

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Table of Contents: 

  • Specific Common Diseaeses
  • Alternaria Leaf Spot (Alternaria cucumerina)
  • Anthracnose (Colletotrichum orbiculare)
  • Angular Leaf Spot (Pseudomonas syringae pv. lachrymans/Pseudomnas syringae)
  • Bacterial Fruit Blotch (Acidovorax citrulli)
  • Blossom-end Rot (Calcium Deficiency)
  • Cercospora Leaf Spot (Cercospora citrullina)
  • Damping-Off (Pythium spp., Fusarium spp., Rhizoctonia spp.)
  • Downy Mildew (Pseudoperonospora cubensis) 
  • Fusarium Wilt (Fusarium oxysporum f. sp. niveum)
  • Gummy Stem Blight (Didymella bryoniae)
  • Phytophthora Blight and Fruit Rot (Phytophthora capsici)
  • Powdery Mildew (Podosphaera xanthii)
  • Rind Necrosis (Several bacterial species)
  • Speckle or Moonspots (unknown cause)
  • Tomato spotted wilt (Tomato spotted wilt virus)
  • Aphid tramsitted Mosaic Viruses (Papaya ringspot virus type W, Watermelon mosaic virus 2, Zucchini yellow mosaic virus)
  • Whitefly Transmitted Viruses (Squash vein yellowing virus, Cucurbit leaf crumple virus, Cucurbit yellow stunting disorder virus)



Pamela D. Roberts
IFAS Extension, University of Florida