UC Turf Disease Diagnostic Lab Weekly Report

As part of the University of California Turf Disease Diagnostic Lab services, a weekly report is being sent out to update clients of current disease outbreaks in California and nearby locations with a focus on diseases of golf course turf. The update will be sent out on a weekly basis. This update is still a working version, if you have comments about how it can be changed or improved, please e-mail me your suggestions. If you receive duplicate messages, please let me know.

- More information on the UC Turf Disease Diagnostic Lab and Turf Program can be found at http://ucrturf.ucr.edu/ and www.turfpathology.ucr.edu

- More information on many of the specific diseases can be found at http://www.ipm.ucdavis.edu/PMG/selectnewpest.turfgrass.html

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University of California Turf Disease Diagnostic Report: February 1, 2010

Quick 7 day Forecasts

Location

Highs (F)

Lows (F)

Soil Temps (6-inch)

Outlook

Possible Major Diseases

(CIMIS location )

Min

Max

Min

Max

(F)

(Weather Based)

Fresno (80)

C/S

Anthracnose Basal Rot, Pink Snow Mold, Rhizoctonia Blight on Warm Season Turfgrass, Take-All Patch, Yellow Patch

Irvine (174)

Anthracnose Basal Rot, Pink Snow Mold, Rhizoctonia Blight on Warm Season Turfgrass, Take-All Patch, Yellow Patch

Los Angeles (133)

Anthracnose Basal Rot, Pink Snow Mold, Rhizoctonia Blight on Warm Season Turfgrass, Take-All Patch, Yellow Patch

Monterey (19)

Anthracnose Basal Rot, Pink Snow Mold, Take-All Patch, Yellow Patch

Palm Springs (118)

Brown Ring (Waitea) Patch, Dollar Spot, Rapid Blight, Rhizoctonia Blight on Warm Season Turfgrass

Riverside (44)

Anthracnose Basal Rot, Brown Ring (Waitea) Patch, Pink Snow Mold, Rhizoctonia Blight on Warm Season Turfgrass, Take-All Patch, Yellow Patch

Sacramento (131)

Anthracnose Basal Rot, Pink Snow Mold, Take-All Patch, Yellow Patch

San Diego (173)

Anthracnose Basal Rot, Pink Snow Mold, Rhizoctonia Blight on Warm Season Turfgrass, Take-All Patch, Yellow Patch

San Francisco (na)

Anthracnose Basal Rot, Pink Snow Mold, Take-All Patch, Yellow Patch

San Jose (132)

Anthracnose Basal Rot, Pink Snow Mold, Take-All Patch, Yellow Patch

San Luis Obispo (52)

Anthracnose Basal Rot, Pink Snow Mold, Rhizoctonia Blight on Warm Season Turfgrass, Take-All Patch, Yellow Patch

Santa Barbara (107)

Anthracnose Basal Rot, Pink Snow Mold, Rhizoctonia Blight on Warm Season Turfgrass, Take-All Patch, Yellow Patch

soil temps reflect the average of the previous 7 days based on CIMIS station data at 6-inch depth. S = sunny, MS = mostly sunny, PC = partially cloudy, MC = mostly cloudy , C = cloudy, Sh = showers, Rn = rain, TS = thunderstorms

Recently Diagnosed Disease Activity

Week:	1/25/10-1/29/10
Sample	Date Received	Location	Host	Disease	Abiotic Problems
28-31	1/27/2010	Maricopa (AZ)	Bermudagrass, ryegrass	Curvularia, Leptosphaerulina
32-33	1/26/2010	Riverside	Creeping bentgass, bermudagrass, ryegrass	Algae, Summer Patch
34	1/27/2010	Snohomish (WA)	Annual bluegrass	Pythium Root Rot
35-36	1/28/2010	Monterey	Ryegrass, Bentgrass mix	Rhizoctonia Brown Patch, Pythium Root Rot
37	1/28/2010	Placer	Annual bluegrass, creeping bentgrass		Winter Kill
38-39	1/29/2010	Orange	Creeping bentgrass		no pathogen, water-logging