Black Gram Yellow Mosaic: Mungbean Yellow Mosaic Virus
The disease is more prevalent on black gram than a green gram.
Initially, mild scattered yellow spots appear on young leaves.
The next trifoliate leaves emerging from the growing apex show irregular yellow and green patches alternating with each other.
Spots gradually increase in size and ultimately some leaves turn completely yellow.
Infected leaves also show necrotic symptoms.
Diseased plants are stunted, mature late and produce very few flowers and pods.
Pods of infected plants are reduced in size and turn yellow in colour.
- Growing resistant varieties such as VBN 4, VBN 6 and VBN 7
- Seed treatment with Dimethoate (or) Imidacloprid @ 5 ml /kg
- Installation of yellow sticky traps 12 nos/ha
- Rogue out the infected plants up to 45 days
- Foliar spray of notchi leaf extract 10% at 30 DAS or neem formulation 3 ml/lit
- Spray methyl demeton 25 EC 500 ml/ha or dimethoate 30 EC 500 ml/ha or thiamethoxam 75 WS 1g /3 lit and repeat after 15 days, if necessary.
- TamilNadu Agritech Portal