Plant Disease Clinic Annual Report

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1 Plant Disease Clinic Annual Report

Plant Disease Clinic Bessey Hall Ames, IA () 9- sickplant@iastate.edu www.plantpath.iastate.edu/pdc Quince rust on hawthorn Paula H. Flynn Diagnostician Mark L.

edu Alison Robertson Extension Plant Pathologist alisonr@iastate.edu X. B. Yang Extension Plant Pathologist xbyang@iastate.

Other members of the Department of Plant Pathology who have contributed to plant problems diagnosis include Gwyn Beattie, Edward Braun, Tom Harrington, John Hill, Leonor Leandro, Sande McNabb, Rich

Specialists in various departments outside of the Department of Plant Pathology contribute to the diagnosis of plant problems submitted to the Plant Disease Clinic.

2 Plant Disease Clinic Bessey Hall Ames, IA () 9- Quince rust on hawthorn Paula H. Flynn Diagnostician Mark L. Gleason Extension Plant Pathologist Gregory L. Tylka Extension Plant Nematologist Christine Engelbrecht Diagnostician Alison Robertson Extension Plant Pathologist X. B. Yang Extension Plant Pathologist Blossom end rot of tomato Acknowledgments Carla Harris, Extension Plant Pathology secretary, provides support in clinic data entry, client correspondence, and compiling the clinic annual report. Other members of the Department of Plant Pathology who have contributed to plant problems diagnosis include Gwyn Beattie, Edward Braun, Tom Harrington, John Hill, Leonor Leandro, Sande McNabb, Rich Pope, and Dave Volkers. Rashelle Matthiesen-Anderson worked as the part-time assistant providing diagnostic support for the Plant Disease Clinic. Specialists in various departments outside of the Department of Plant Pathology contribute to the diagnosis of plant problems submitted to the Plant Disease Clinic. With their help, we are better able to provide answers to a wide range of questions. Department of Agronomy Steve Barnhart, Roger Elmore, Robert Hartzler, Mike Owen, Palle Pedersen, and John Sawyer Frost injury on yew Department of Ecology and Evolution and Organismal Biology Rosanne Healy, Deb Lewis, Steve Mahoney, and Lois Tiffany Department of Entomology Laura Jesse, Donald Lewis, Marlin E. Rice, and Mark Shour Department of Horticulture Nick Christians, Paul Domoto, Richard Gladon, Cindy Haynes, Jeff Iles, Richard Jauron, Dave Minner, Gail Nonnecke, Arlen Patrick, James Romer, and Hank Taber Department of Natural Resource Ecology and Management Tivon Feeley and Jim Pease Cedar-apple rust

The Clinic Mission The Plant Disease Clinic provides diagnostic support for county and area extension personnel and the citizens of Iowa.

The Plant Disease Clinic responds to requests for plant health information from farmers, growers, and the general public via telephone calls, e-mails, face-to-face encounters, and plant and soil

A $ fee is assessed for the diagnosis of plant samples, and a $ fee is assessed for analyzing soil samples for soybean cyst nematodes.

3 The Clinic Mission The Plant Disease Clinic provides diagnostic support for county and area extension personnel and the citizens of Iowa. The clinic is housed in the Department of Plant Pathology at Iowa State University and is supported by the Iowa State University Extension Integrated Pest Management Program. The Plant Disease Clinic responds to requests for plant health information from farmers, growers, and the general public via telephone calls, s, face-to-face encounters, and plant and soil samples submitted for analysis. Responses focus on educating the clients in ecologically sound plant disease management practices. A $ fee is assessed for the diagnosis of plant samples, and a $ fee is assessed for analyzing soil samples for soybean cyst nematodes. Paula Flynn, Plant Disease Clinic Diagnostician Thank you for the many wonderful years of service you gave to the Iowa State University Plant Disease Clinic. Good luck in your future endeavors; you will be missed by all of Iowa State University and the citizens of Iowa that you have helped with their plant diseases over the past years. An important function of the clinic is to keep growers and gardeners informed on current and potential plant health management issues. Timely news articles and radio interviews help growers and gardeners, and also help county extension personnel anticipate and meet the needs of their clientele. Wilting caused by Dutch elm disease Yellowing of maple due to Verticillium wilt Clinic Activity Sample Category January February March April May June July August September October November December Total Annuals Broadleaf Trees Coniferous Trees 9 9 Field Crops Forage Crops Row Crops 9 9 Small Grains Specialty Crops Fruit 9 Miscellaneous Perennials Plant Identification Potted Plants Turfgrass 9 Vegetables Woody Ornamentals 9 9 Total Plant Samples 9 9 Telephone Inquiries Soil Samples 9 Inquiries 9 Total Month

4 Plant Disease Clinic activity 9 Number of Samples and Inquiries Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Inquiries Soil Samples Plant Samples Phone Inquiries

5 Long-Term Trends in Clinic Activity Plant Samples Long-Term Trends in Clinic Activity SCN Samples Number of Samples Number of Samples Distribution of Plant Sample Types Clientele Samples Fruit % Woody Ornamentals % Miscellaneous % Plant ID % Potted Plants % Vegetables % Turf % Perennials and Annuals % Broadleaf Trees % Field Crops % Coniferous Trees % Commercial Extension General Public Mail Walk-in

6 WASHINGTON LOUISA TAMA MARSHALL JOHNSON IOWA POWESHIEK JASPER MARION 9 MAHASKA KEOKUK MONROE APPANOOSE CEDAR CLINTON SCOTT MUSCATINE VAN BUREN WAPELLO DAVIS JEFFERSON HENRY DES MOINES LEE 9 BENTON LINN JONES JACKSON DUBUQUE DELAWARE BUCHANAN BLACK HAWK GRUNDY BREMER BUTLER ALLAMAKEE WINNESHIEK HOWARD MITCHELL WORTH CERRO GORDO FRANKLIN FLOYD CHICKASAW CLAYTON FAYETTE HARDIN WRIGHT KOSSUTH HUMBOLDT BOONE HAMILTON HANCOCK WEBSTER CALHOUN PALO ALTO STORY WINNEBAGO GREENE POCAHONTAS CARROLL EMMET SHELBY SAC CHEROKEE DICKINSON 9 HARRISON IDA BUENA VISTA OSCEOLA CRAWFORD WOODBURY CLAY LYON MONONA PLYMOUTH O'BRIEN SIOUX TAYLOR RINGGOLD DECATUR WARREN POLK LUCAS WAYNE MADISON DALLAS CLARKE ADAMS ADAIR AUDUBON UNION MILLS GUTHRIE MONTGOMERY POTTAWATTAMIE 9 CASS FREMONT PAGE OUT OF STATE Number of Plant Samples Received by County OUT OF STATE WASHINGTON LOUISA TAMA MARSHALL JOHNSON IOWA POWESHIEK JASPER 9 MARION MAHASKA KEOKUK MONROE APPANOOSE CEDAR CLINTON SCOTT MUSCATINE VAN BUREN WAPELLO DAVIS JEFFERSON HENRY DES MOINES LEE BENTON LINN JONES JACKSON DUBUQUE DELAWARE BUCHANAN BLACK HAWK GRUNDY BREMER BUTLER ALLAMAKEE WINNESHIEK HOWARD MITCHELL WORTH CERRO GORDO FRANKLIN FLOYD CHICKASAW CLAYTON FAYETTE HARDIN WRIGHT KOSSUTH HUMBOLDT 9 BOONE HAMILTON HANCOCK WEBSTER 9 CALHOUN PALO ALTO STORY 9 WINNEBAGO GREENE POCAHONTAS CARROLL 9 EMMET SHELBY 9 SAC CHEROKEE DICKINSON HARRISON IDA BUENA VISTA OSCEOLA CRAWFORD WOODBURY CLAY LYON MONONA PLYMOUTH O'BRIEN SIOUX TAYLOR RINGGOLD DECATUR WARREN POLK LUCAS WAYNE MADISON DALLAS CLARKE ADAMS ADAIR AUDUBON UNION MILLS GUTHRIE MONTGOMERY POTTAWATTAMIE CASS FREMONT PAGE Number of Soil Samples Received by County

Common Infectious Disease Problems Examples of diseases diagnosed at the Iowa State University Plant Disease Clinic are listed below according to host.

raspberry strawberry tomato Ornamentals coneflower geranium hosta pansy rose Field Crops alfalfa corn soybean Turfgrass turfgrass anthracnose, ash rust, Verticillium wilt Verticillium wilt black

leaf blister, oak wilt, Tubakia leaf spot peach leaf curl black knot, plum pockets Marssonina leaf spot anthracnose Diplodia (Sphaeropsis) canker, rust, Swiss needle cast Cedar apple rust, Kabatina

apple scab, cedar-apple rust, fire blight, flyspeck, quince rust, sooty blotch, white rot Fusarium wilt, white mold angular leaf spot, bacterial wilt anthracnose, black rot, bunch rot anthracnose,

7 Common Infectious Disease Problems Examples of diseases diagnosed at the Iowa State University Plant Disease Clinic are listed below according to host. About half of the plant samples received in, especially trees and shrubs, showed symptoms related to adverse site conditions, improper cultural practices, or environmental stresses, rather than infectious disease. Broadleaf Trees ash catalpa cherry crabapple elm hawthorn linden maple oak peach plum poplar sycamore Coniferous Trees fir juniper pine spruce Fruits and Vegetables apple bean cucurbits grape raspberry strawberry tomato Ornamentals coneflower geranium hosta pansy rose Field Crops alfalfa corn soybean Turfgrass turfgrass anthracnose, ash rust, Verticillium wilt Verticillium wilt black knot, cherry leaf spot apple scab, fire blight anthracnose, Dutch elm disease hawthorn rust, quince rust Verticillium wilt anthracnose, fungal leaf spots, tar spot, Verticillium wilt anthracnose, oak leaf blister, oak wilt, Tubakia leaf spot peach leaf curl black knot, plum pockets Marssonina leaf spot anthracnose Diplodia (Sphaeropsis) canker, rust, Swiss needle cast Cedar apple rust, Kabatina tip blight, Phomopsis tip blight brown spot needle blight, Diplodia (Sphaeropsis) canker and tip blight, Dothistroma needle blight, pine wilt, sooty mold Cytospora canker, Rhizosphaera needle cast apple scab, cedar-apple rust, fire blight, flyspeck, quince rust, sooty blotch, white rot Fusarium wilt, white mold angular leaf spot, bacterial wilt anthracnose, black rot, bunch rot anthracnose, Septoria leaf spot, Verticillium wilt Mycosphaerella leaf spot, Verticillium wilt bacterial spot, blossom end rot, Fusarium wilt, Septoria leaf spot, white mold aster yellows, Verticillium wilt, Septoria leaf spot bacterial blight, Pythium root and stem rot anthracnose, Arabis mosaic virus, Hosta Virus X black root rot black spot, powdery mildew, rose rosette Aphanomyces root rot, spring black stem anthracnose, ear rots (Aspergillus, Diplodia, Fusarium, and Giberella), Fusarium crown rot, gray leaf spot, Holcus spot, Pythium root and crown rot, rust, stalk rot, Stewart s disease bacterial blight, bean pod mottle virus, brown stem rot, Cercospora leaf blight, downy mildew, frogeye leaf spot, Fusarium root rot, Fusarium wilt, Phomopsis seed decay, Phytophthora root rot, pod and stem blight, soybean cyst nematode, sudden death syndrome, top dieback anthracnose, brown patch, gray leaf spot, leaf spot and melting out, powdery mildew, Pythium blight, red thread, rust, summer patch Rashelle Matthiesen-Anderson, student worker, and Christine Engelbrecht, Plant Disease Clinic diagnostician Freeze injury on ginkgo Fairy ring of mushrooms Cedar-hawthorn rust galls on cedar Sulfur shelf fungus

County Fire Department NFIRS # (FDID) Adair Adair Fire Department Adair Bridgewater Fire Department Adair Fontanelle Fire Department

County Fire Department NFIRS # (FDID) Adair Adair Fire Department 01001 Adair Bridgewater Fire Department 01002 Adair Fontanelle Fire Department 01003 Adair Greenfield Fire Department 01004 Adair Orient