Pacific Northwest Vegetable Extension Group

of Washington State University, Oregon State University, and University of Idaho

Photo Gallery of Vegetable Problems

Coriander/cilantro

(Click on photo to enlarge)

Diseases

Disease: Curly top
Pathogen: Various strains of Beet curly top virus (BCTV), which are vectored by the beet leafhopper (Circulifer tenellus)
Host crops: Numerous plant species including many vegetables such as bean, beet, carrot, eggplant, coriander, pepper, potato, tomato, various cucurbits such as squash, cucumber, pumpkin, watermelon, etc.

Photo showing symptoms of curly top on coriander Photo showing symptoms of curly top on coriander Photo showing symptoms of curly top on coriander Photo showing symptoms of curly top on coriander Photo showing symptoms of curly top on coriander
Symptoms of curly top in a coriander seed crop including stunting,
purpling/yellowing of the foliage, and death of plants.
Photo Source: Lindsey du Toit, Washington State University Plant Pathologist

 
Photo showing symptoms of curly top on coriander
Symptoms of curly top in a coriander seed crop including stunting, purpling/yellowing of the foliage, and death of plants.
Photo Source: Lindsey
du Toit, Washington State University

On-Line Resources:

Pacific Northwest Plant Disease Management Handbook: Bean, All (Phaseolus vulgaris) – Curly Top

Nematodes

Disease: Root knot
Nematode: Meloidogyne species
Host crops: Numerous plant species, including many vegetables such as carrot, coriander, onion, potato, etc.

Photo of coriander in field showing symptoms of root knot nematode damage Photo showing variation in degree of stunting caused by root knot nematode Photo of coriander seedlings showing various degrees of dieback and root galling
Patches of stunted plants in a coriander seed crop caused by root knot nematode. Variation in degree of stunting caused by root knot
nematode in a coriander seed crop.
Coriander seedlings showing various degrees of dieback and root galling from root knot nematode.
Photo Source: Lindsey du Toit, Washington State University

 
Photo of swollen, galled root of coriander plants
Swollen, galled roots of coriander plants caused by the root knot nematode.
Photo Source: Lindsey
du Toit, Washington State University

On-Line Resources:

Pacific Northwest Plant Disease Management Handbook: Carrot (Daucus carota) – Nematode, Root-knot

Pacific Northwest Plant Disease Management Handbook: Nematodes

Cilantro Production in California. Vegetable Production Series, UC Vegetable Research & Information Center

See Diseases, pests, and other problems common to many vegetables: Root knot
 

Our pages provide links to external sites for the convenience of users. WSU Extension does not manage these external sites, nor does Extension review, control, or take responsibility for the content of these sites. These external sites do not implicitly or explicitly represent official positions and policies of WSU Extension.

WSU Mount Vernon NWREC, 16650 State Route 536, Mount Vernon, WA 98273-4768, 360-848-6120
Contact Us: Lindsey du Toit and Carol Miles