Pierce's Disease
Research Updates


What is Pierce's Disease?

Pierce's Disease is a bacterial infection, which is spread by bugs that feed on grapevines, particularly the "glassy winged sharpshooter." Grapevines that become infected with PD can quickly become sick and die.

glassy-winged sharpshooter

PD/GWSS Board Research and Outreach Program Request for Proposals

The California Department of Food and Agriculture’s Pierce’s Disease and Glassy-winged Sharpshooter Board (CDFA PD/GWSS Board) accepts proposals for research and outreach projects on the following serious pests and diseases of winegrapes:

Pierce’s disease and its vectors, especially the glassy-winged sharpshooter; brown marmorated stink bug; grapevine fanleaf disease; grapevine leafroll disease; grapevine red blotch disease; mealybug pests of winegrapes; spotted lanternfly.

The CDFA PD/GWSS Board’s Research and Outreach Program is funded by a special assessment paid by the California winegrape industry. Prior awards have ranged from $4,300 per year to $383,000 per year, with projects ranging from one to three years in duration.

Funding preference will be given to projects deemed likely to lead to practical solutions to winegrape pest and disease problems in California. Multi-disciplinary team projects are encouraged. Read the Request for Proposals.


Proposals accepted December 1, 2021 through January 31, 2022.