Onion plants suffer a lot due to purple spot disease, rot disease, scorch disease, soft rust disease, etc. To get a good crop of onion and to protect the crop from diseases, it is very important to know about these diseases. If you are cultivating onion, then from here you can see the causes, symptoms and ways of controlling it.
cause of purple spot disease
The disease is caused by a fungus called Alternaria pori.
Symptoms of Purple Spot Disease
The disease begins with the older leaves of the plants.
Small oval spots appear on the leaves.
After some time the color of the spots starts turning from purple to brown.
The edges of these spots are yellow.
As the disease progresses, the yellow edges of the spots spread and lesions appear on the top and bottom of the leaves.
The leaves begin to wither.
The plant starts drying up.
Methods of Control of Purple Spot Disease
Select varieties resistant to purple spot disease.
Follow crop rotation to avoid this disease.
Spray by mixing 200 grams Mancozeb 63 WP in 200 liters of water. This quantity is given per acre of field.
If required, re-spraying can be done at an interval of 15 days.
Spraying of fungicide containing copper can also prove to be effective in controlling this disease.
Get information about fertilizer management in onion crop from here.
We hope this information will prove to be important for you. If you liked this information, then like this post and also share it with other farmer friends. So that other farmer friends can also save onion crop from purple spot disease. Ask us your questions related to this through comments.
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