Late Blight Symptoms Quiz
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Questions and Answers

What is the causal agent of late blight?

  • Phytophthora infestans (correct)
  • Alternaria solani
  • Botrytis cinerea
  • Fusarium oxysporum
  • Where does the white downy growth of the late blight fungus appear?

  • On the upper surface of the leaves
  • Around the stems
  • On the lower surface of the leaves (correct)
  • On the tomato fruits
  • What are the initial symptoms of late blight on tomato leaves?

  • Circular, dark brown spots with yellow margins
  • Pale, green, irregular spots on the tips and margins (correct)
  • Purple, fuzzy patches on the upper surface
  • Yellow, concentric rings on the lower surface
  • How can late blight be managed?

    <p>Follow crop rotation and avoid solanaceous crops like potato</p> Signup and view all the answers

    What happens to tomato fruits affected by late blight?

    <p>Dark, olivaceous greasy appearing spots are formed</p> Signup and view all the answers

    What is the appearance of late blight symptoms on tomato leaves?

    <p>Pale, green, irregular spots on the tips and margins</p> Signup and view all the answers

    What is the recommended method to manage late blight?

    <p>Follow crop rotation and avoid solanaceous crops in rotation</p> Signup and view all the answers

    What causes the central tissue of late blight symptoms to turn necrotic and dark brown or black?

    <p>Moist weather</p> Signup and view all the answers

    Where is the white downy growth of the late blight fungus most prevalent on tomato leaves?

    <p>Lower surface in morning hours when climate is moist</p> Signup and view all the answers

    What type of spots are formed on tomato fruits affected by late blight?

    <p>Dark, olivaceous greasy appearing spots</p> Signup and view all the answers

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