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
Which crop is most susceptible to rice blast disease?
Wheat
Rice
Corn
Barley
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
Cercosporal leaf spot is a common disease in which group of crops?
Legumes
Fruits
Fruits
Grains
What is the main vector responsible for transmitting rosette disease in peanuts?
Bees
Aphids
Butterflies
Ants
Which practice helps manage smut disease in cereals?
Crop rotation
Using fungicides
Planting under shade
Pruning affected leaves
How does rice blast affect grain yield?
Causes circular spots on grains
Reduces photosynthesis
Causes yellowing of stems
None of the above
Which legume is particularly susceptible to cercosporal leaf spot?
Chickpeas
Lentils
Green beans
Mung beans
What is the primary mode of transmission for smut disease?
Wind
Water
Insects
Soil
Which preventive measure is effective against rosette disease in peanuts?
Using fungicides
Controlling aphid vectors
Crop rotation
Pruning affected leaves