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Beet curly top virus (BCTV) is a destructive plant virus that primarily affects plants such as sugar beets, tomatoes. It is primarily transmitted by the beet leafhopper (Circulifer tenellus), which feeds on plant sap and can carry the virus from infected plants to healthy ones.

Symptoms of Beet Curly Top Virus on leaves and plants typically include leaf curling. Leaves of infected plants often exhibit severe curling, puckering, and distortion. This is one of the most characteristic symptoms and gives the virus its name.

Also, leaves may turn yellow or purple, and they can become thickened and brittle. Affected plants often exhibit stunted growth and reduced vigor. As the disease progresses, plants may wilt, and overall plant health declines.

Reference

https://cropwatch.unl.edu/plantdisease/sugarbeet/beet-curly-top
https://webdoc.agsci.colostate.edu/hempinsects/PDFs/Curly%20Top%20Beet%20Leafhopper%202020.pdf

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