Tobacco Etch Virus (TEV)

Casual Agent

Tobacco etch virus is an aphid-transmitted potyvirus that has been found on pepper plants in Utah.

Symptoms

The virus causes foliage to become severely mottled in coloration and wrinkled. Plants infected early in the season will become stunted and not produce harvestable fruit

Disease Cycle

Multiple aphid species can transmit the virus from other Solanaceae crop and weed hosts. Aphids only need to feed on a TEV-infected plant for a few seconds to pick up the virus. The virus is not transmissible by seed.

Management

  • Remove nearby weeds. Weed species such as thistle, lamb’s quarter, sickle pod, jimson weed, black nightshade and others can serve as an alternate host. If possible, allow at least 30 yards between susceptible crops and weeds.
  • Early monitoring. Monitor for infected plants early in the season and remove them.
  • Monitor aphid populations early. Apply insecticide treatments when needed.

Symptoms of Tobacco Etch Virus in Tomato Foliage
Symptoms of Tobacco Etch Virus in Tomato Foliage

Symptoms of Tobacco Etch Virus in Tomato Plant
Symptoms of Tobacco Etch Virus in Tomato Plant