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Fungi and Plant Diseases

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Questions and Answers

Where are fungal lesions typically first observed on leaves?

Abaxial leaf surface

Adaxial leaf surface (correct)

Petiole of the leaf

Leaf tip

What is the primary measure for controlling fungal leaf spot diseases?

Applying fungicides

Keeping the foliage dry (correct)

Removing infected leaves

Pruning infected plants

How are the spores of the causative fungi dispersed?

By water droplets, personnel, and insects (correct)

Through soil contact

By root systems

Through air currents

What is the characteristic of leaf blight diseases?

Yellowing of leaf tips and margins Signup and view all the answers

What is the eventual outcome of tissue death in leaf blight diseases?

Entire lamina death Signup and view all the answers

Which leaves are more susceptible to leaf blight diseases?

Older leaves Signup and view all the answers

What is the purpose of not placing plants directly under overhead watering in greenhouses?

To prevent fungal leaf spot diseases Signup and view all the answers

How do spores of the causative fungi germinate?

In water or inside leaf openings Signup and view all the answers

What is the characteristic of fungal leaf spot diseases?

Appearance of holes on the leaf surface Signup and view all the answers

How should irrigation be applied in greenhouses?

Only to the roots in the potting media Signup and view all the answers