University of Florida

Pseudocurly Top

Virus

Pseudocurly top

Infects

Entire plant

Symptoms

Leaves roll upwards with leaflets twisted to expose underside; plants become brittle and chlorotic; leaflet veins turn purple; branches and stems become very erect, with marked internode shortening. Plants are stunted with few, if any, fruit.

Pathogen Spread

Vectored by the treehopper (Micrutalis) from weed hosts such as ragweed, nightshade, and ground cherry.

Favorable Conditions

Very warm fall months when vector is prevalent.

Pseudocurly Top Picture

Pseudo curly top virus
Image #138.
Pseudocurly top-

Severe stunting with leaflets cupped upward and stems and petioles erect and brittle.