Diseases of crops - SS2 Agriculture Past Questions and Answers - page 1
What is the primary symptom of smut disease in cereals?
Black, powdery spore masses
Irregularly shaped lesions
Reddish-brown pustules
Yellowing of leaves
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Which crop is most susceptible to rice blast disease?
Wheat
Rice
Corn
Barley
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How does leaf rust disease manifest in cereals?
Circular dark spots on leaves
Reddish-brown pustules on leaves
Yellowing and curling of leaves
Powdery white growth on stems
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Cercosporal leaf spot is a common disease in which group of crops?
Legumes
Fruits
Fruits
Grains
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What is the main vector responsible for transmitting rosette disease in peanuts?
Bees
Aphids
Butterflies
Ants
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Which practice helps manage smut disease in cereals?
Crop rotation
Using fungicides
Planting under shade
Pruning affected leaves
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How does rice blast affect grain yield?
Causes circular spots on grains
Reduces photosynthesis
Causes yellowing of stems
None of the above
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Which legume is particularly susceptible to cercosporal leaf spot?
Chickpeas
Lentils
Green beans
Mung beans
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What is the primary mode of transmission for smut disease?
Wind
Water
Insects
Soil
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Which preventive measure is effective against rosette disease in peanuts?
Using fungicides
Controlling aphid vectors
Crop rotation
Pruning affected leaves
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