Yellow vein
mosaic of
bhindi (Okra) looks like and what is the mode of transmission
Answers
Answer:
Explanation:
Vein-Clearing/Yellow Vein Mosaic :Bhendi yellow vein mosaic virus
Symptoms
Yellowing of the entire network of veins in the leaf blade is the characteristic symptom.
In severe infections the younger leaves turn yellow, become reduced in size and the plant is highly stunted.
The veins of the leaves will be cleared by the virus and intervenal area becomes completely yellow or white.
In a field, most of the plants may be diseased and the infection may start at any stage of plant growth.
Infection restricts flowering and fruits, if formed, may be smaller and harder.
The affected plants produce fruits with yellow or white colour and they are not fit for marketing.
The virus is spread by whitefly.
Management
By selecting varieties resistant to yellow vein mosaic like Parbhani Kranti, Arka Abhay, Arka Anamika, and Varsha Uphar, the incidence of the disease can be minimised.
The virus is transmitted by the whitely (Bemisia tabaci,.
Parbhani Kranti, Janardhan, Haritha, Arka Anamika and Arka Abhay can tolerate yellow vein mosaic.
For sowing during the summer season, when the whitefly activity is high, the susceptible varieties should be avoided.
Spraying monocrotophos 1.5 ml/litre of water can restrict the disease spread.
Synthetic pyrethroids should not be used because it will aggravate the situation.
It can be controlled by application of Chlorpyriphos 2.5 ml + neem oil 2 ml lit of water.