PEMV
Kirusi
The major symptom is the enation, which is evident on the lower side of the leaves. Downward curling of uppermost leaves occurs between 5-7 days after inoculation. This is followed by a marked vein clearing and the development of irregular chlorotic flecks and small irregular translucent lesions along the surface of the leaf. Pod size and quality are severely affected, leading to yield loss.
Use resistant varieties for planting. Place yellow sticky traps to control the aphid population. Plant tall border crops like maize, sorghum or millet to reduce the aphid population.
Always consider an integrated approach along with preventive measures and available biological treatments. Monitor aphid population and apply approved pesticides at the correct timing.
Damage is caused by the mosaic virus (Luteoviridae) and is transmitted by aphids (Acyrthosiphon pisum and Myzus ornatus) in a circulative non-propagative manner. Nymphs are more efficient than adults in transmitting the virus. The severity of the incidence depends on the age of the host plant and the environmental conditions.