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Entries tagged with: Washington State University


Late blight spreads in Columbia Basin

Washington State University (WSU) Extension has released a special issue of Potato Pest Alert regarding the spread of late blight to more fields in the Columbia Basin. Dennis Johnson, WSU professor and Extension plant pathologist, reported the following information in the alert. Late blight has spread and is extensively present in fields near Burbank, northeast of Pasco, north of Pasco, and north to Eltopia. The strain of the late blight pathogen in the Basin this year is US8, which…  » Read more

PVY threatens french fry industry

The next time you sink your teeth into a hot, crispy french fry, consider the threats that stand between you and this iconic food. Newly emerged viruses threaten the U.S. potato industry, including potatoes grown in Washington. More than 85 percent of potatoes from the state’s Columbia Basin feed our french fry habit. As demand for fries continues to rise, the pressure on U.S. growers to produce perfect potatoes is intensifying.     Newer strains…  » Read more

Washington state late blight strain identified

Dennis Johnson, Washington State University plant pathologist, said that the late blight reported in Washington state last week has been identified as the US8 strain, which is mefenoxam and metalaxyl resistant. The strain was found in Walla Walla County near Burbank, Washington. US 8 and US 23 were both present in the Columbia Basin last year.  Temperatures are moderating and the expected mild conditions in the Basin will favor heavy sporulation. Rain, cloudy conditions, and frequent sprinkler…  » Read more

Psyllids found in Washington state

Potato psyllids were found on yellow sticky cards in Washington state fields near Mattawa, Mesa, Eltopia, Pasco and Burbank. The largest number of psyllids were found in the Burbank area. They are being tested for Liberibacter, the bacterium that causes zebra chip.

Late blight found in Washington state

Late blight has been confirmed in Walla Walla County near Burbank, Washington according to a Washington State University (WSU) potato pest alert report by Dennis Johnson, WSU plant pathologist. “This is the earliest we have had late blight in the Columbia Basin,” Johnson said in this WSU Potato Pest Alert. Johnson recommends that sprinkler irrigated fields in the Burbank, Finley and north Pasco areas should be treated with a late blight fungicide on a 7-day…  » Read more

Samples needed for potato seed trials

Washington State University (WSU) is seeking commercial potato seed samples for the 2016 Washington Seed Lot Trial. The university is requesting 50-pound samples of 2-4 ounce seed. If applicable, a representative amount of rotten tubers can be included. Seed over 6 ounces will not be accepted. Sampling the first (or last) 300 seed from the truck is not likely to provide a representative sample of the lot, WSU said. Sample tags may be obtained by calling the Potato Commission at 509-765-8845. Seed samples may…  » Read more

PVY workshops June 20-23

Potato virus detection training workshops will be held in four different sites from June 20-23.  The workshops will cover field identification of PVY (strains O, N-Wi and NTN), including visual identification of foliar symptoms on 40 major cultivars. The training will include samples of different tuber symptoms from PVY, PMTV and TRV. Workshops will also discuss and demonstrate new diagnostic assays for viruses and soilborne vectors of some of the viruses. University and USDA experts…  » Read more

WSU, OSU and UI receive $2.7 million SCRI grant

Researchers from Washington State University (WSU), Oregon State University (OSU) and the University of Idaho (UI) and the Northwest Potato Research Consortium have received a  five-year, $2.7 million grant from the USDA’s Specialty Crop Research Initiative (SCRI) to study the psyllids that carry liberibacter, the pathogen that causes zebra chip disease.

Late blight verified in Pasco area

On the Washington State University (WSU) Potato Pest Alert website Carrie Wohleb, WSU Extension educator, reports that late blight has been verified near Pasco, in Block 1 and Block 15. At this time the late blight genotype has not been identified. More late blight samples are needed to identify the genotype. Contact Dennis Johnson at 509-335-3753 or dajohn@wsu.edu to report, confirm or make a late blight diagnosis.

Syngenta continues late blight hotline for 2015

Syngenta is continuing its partnership with five universities to provide potato growers with the latest late blight disease updates in 2015. Updates from the five universities are available at the following telephone numbers: University of Idaho: 800-791-7195 Michigan State University: 888-379-9012 North Dakota State University: 888-482-7286 Oregon State University: 800-705-3377 Washington State University: 800-984-7400

Toll-free potato blight hotlines

Syngenta, in partnership with five universities, once again will offer toll-free potato blight hotlines during the growing season.             The hotlines consist of researchers providing updates about current potato disease pressures during the growing season in each growing region.             The updates are provided by the following universities and are available at the corresponding phone numbers: University of Idaho: 1-800-791-7195 Michigan State University: 1-888-379-9012 North Dakota State University: 1-888-482-7286 Oregon State University: 1-800-705-3377 Washington State…  » Read more