How to Manage Pests

UC Pest Management Guidelines

| More pests | More crops | About guidelines |

Pistachio

Powdery Mildew

Pathogens: Oidium sp.

(Reviewed 2/07, updated 2/07)

In this Guideline:

Symptoms
Comments on the disease
Management

SYMPTOMS

Powdery mildew causes leaves to yellow, then brown and die. Infected tissues may be distorted and misshapen. Similar symptoms can be found on rachises, fruit stems, petioles, underside of leaf blades, and young shoots.

COMMENTS ON THE DISEASE

The disease commonly occurs on the Trabonella cultivar. Red Aleppo is more susceptible than the Kerman cultivar.

MANAGEMENT

The occurrence of powdery mildew on pistachio trees is uncommon and sporadic. No control measures are recommended.

PUBLICATION

UC IPM Pest Management Guidelines: Pistachio
UC ANR Publication 3461
Diseases
T. J. Michailides, Kearney Agricultural Center, Parlier
Acknowledgment for contributions to the diseases section:
B. L. Teviotdale, Kearney Agricultural Center, Parlier

Top of page

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See How to manage pests, or in the U.S., contact your local Cooperative Extension office for assistance. /PMG/r605100711.html revised: February 7, 2007. Contact webmaster.