Plant Diseases Questions

Ergot of rye is caused by a species of:

Bacterial leaf blight of rice is caused by a species of:

Which one of the following is linked to the discovery of Bordeaux mixture?

Which one of the following proved effective for biological control of nematodal disease in plants?

Which two measures can successfully control bacterial blight in chick-pea?(a) Spray with Bordeaux mixture.(b) Control the insect vector.(c) Use only disease-free seeds.(d) Use varieties resistant to the disease.