Crop Diseases and Pests Quiz
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Questions and Answers

Symptoms of tomato buck eye rot appear on both leaves and fruits.

True (A)

Tomato spotted wilt virus is transmitted by aphids.

True (A)

Phomopsis blight of Brinjal is severe in low RH and low temperature.

False (B)

Little leaf disease is caused by Spiroplasma.

<p>False (B)</p> Signup and view all the answers

Spores of Colletotrichum capsici are produced in cleistothecia.

<p>False (B)</p> Signup and view all the answers

Yellow vein mosaic of okra is transmitted by the leaf hopper.

<p>False (B)</p> Signup and view all the answers

Onion smudge is caused by Colletotrichum gloeosporioides.

<p>True (A)</p> Signup and view all the answers

Powdery mildew of pea is more severe in dry weather.

<p>False (B)</p> Signup and view all the answers

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Flashcards

Late Blight of Tomato

Caused by the fungal pathogen Phytophthora infestans, characterized by dark, brown lesions on leaves, stems, and fruits. The disease thrives in cool and humid conditions, leading to rapid plant decay.

Early Blight of Tomato

Caused by the fungal pathogen Alternaria solani, characterized by target-shaped, concentric circles on leaves and black spots on fruits. It prefers warm and dry conditions.

Potato Spindle Tuber Disease

Caused by the virus Potato spindle tuber viroid (PSTVd), affecting potatoes in various ways, including stunting and twisting of the stem, and producing long, thin tubers.

Root Knot of Vegetables

The pathogen Meloidogyne spp. causes root knots by creating galls on the roots, disrupting water and nutrient uptake, leading to stunted growth and reduced yield.

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Downy Mildew of Pea

Caused by the fungal pathogen Peronospora pisi, it leads to yellowing and premature leaf drop. The disease flourishes in humid conditions and thrives in cool, damp weather.

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Powdery Mildew of Pea

Caused by the fungal pathogen Erysiphe pisi, characterized by a white, powdery coating on leaves, stems, and pods. It thrives in dry conditions and often spreads quickly in warm temperatures.

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Stem Gall of Coriander

Caused by the fungal pathogen Fusarium oxysporum f. sp. ciceri, characterized by the formation of stem galls, stunted growth, and discoloration of leaves, often leading to plant death.

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Integrated Management of Root Knot of Vegetables

Involves various strategies to control the disease, including crop rotation, resistant varieties, soil solarization, and biological control. It aims to minimize the use of chemical pesticides.

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Study Notes

Crop Diseases and Pests

  • Tomato Buck Eye Rot: Symptoms appear on leaves, red fruits, or immature green fruit
  • Tomato Spotted Wilt Virus: Transmitted by an organism
  • Phomopsis Blight (Brinjal): Occurs under high relative humidity and high temperatures
  • Little Leaf Disease: Caused by Spiroplasma, RLO, Virus, or Phytoplasma
  • Colletotrichum Capsici Spores: Produced in acervuli
  • Capsicum Soft Rot: Caused by Erwinia carotovora pv. carotovora or Erwinia campestris pv. campestris
  • Okra Yellow Vein Mosaic: Transmitted by whiteflies, aphids, or leafhoppers
  • Onion Diseases (Alternaria): Can cause downy mildew, bloat disease, purple blotch, or white rot
  • Onion Smudge: Caused by Colletotrichum lindemuthianum, Colletotrichum capsici, or Colletotrichum circinans
  • Root Knot Disease: Caused by Heterodera spp., Pratylenchus spp., Nacobus spp., or Meloidogyne spp.
  • Cauliflower Lesions: 'V' shaped lesions can be symptoms of soft rot, black rot, or stalk rot
  • Pea Powdery Mildew: More severe in dry weather
  • Beet Necrosis Yellow Vein Virus: Part of the furovirus group.
  • French Bean Web Blight: Caused by a plant pathogen
  • Fenugreek Powdery Mildew: Caused by Erysiphe cichoracearum, Erysiphe pisi, or Erysiphe polygoni

Disease Identification and Descriptions

  • Late Blight vs. Early Blight of Tomato: Differentiate the characteristics of each.
  • Potato Spindle Tuber Disease: Description of the disease
  • Integrated Management of Root Knot of Vegetables: Techniques to control.
  • Differentiating Downy Mildew and Powdery Mildew in Pea: Key differences and identifying factors
  • Stem Gall of Coriander: Description of the disease or pest

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Description

Test your knowledge on various crop diseases and pests affecting tomatoes, okra, onions, and more. This quiz covers symptoms, causes, and transmission methods for a range of agricultural issues. Perfect for students and professionals in the field of agriculture.

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