late blight

Pests can be a major problem for any commodity across the Northwest.  But thanks to extensive research and aggressive practices, many of those issues don’t become big problems for the potato industry.  Chris Voigt Executive Director with the Washington state Potato Commission said one such pest is Late Blight.  He told the W...

WSU’s Dr. Dennis Johnson had identified this year’s late blight pathogen in potato fields as US8.   This particular strain is metalaxyl and mefenoxam resistant which means you can’t use Ridomil.   Fields with late blight and adjacent fields should be on a 5 to 7 day fungicide application schedule.  Fields north of Pasco to ...

WSU’s Dr. Dennis Johnson discovered late blight in eight Columbia Basin potato fields north and southeast of Pasco.   Johnson says fields with late blight should be treated on a five-day fungicide application schedule while fields without late blight in the affected area should treat on a seven day schedule.   O...

Potato growers on the Columbia Basin need to be on the lookout for Late Blyte this summer.  Washington State University's Tim Waters says there is a greater than 95% chance we’ll see Late Blight this year.   “The reason for that is, the cool wet conditions that we’ve had to date this spring.  So, late blight is a water mol...

WSU issued their first potato pest report of the year over the weekend.   The current late blight forecast shows a more than 85 percent chance of late blight in both the North and South Basins. There is no late blight yet but culls and tuber refuse need to be eliminated, volunteer potatoes in fields where late blight was present last year need to be managed, and fields should not be over irrigated

Late blight continues to spread and is now being found in Burbank as well as North and east of Pasco and north of Eltopia.   WSU’s Dr. Dennis Johnson said, “The strain of the late blight pathogen in the Basin this year is US8, which is metalaxyl resistant.”   All sprinkl...

WSU Plant Pathologist Dr. Dennis Johnson says that late blight has spread to several fields north of Pasco and East of Highway 395.   Johnson recommends that any field with late blight be on a five-day application schedule to fight the disease and that fields near Burbank, Finley and north and east of Pasco should be treated with a late blight fungicide on at least a seven-day schedule.  ... Read

Washington State University confirmed Thursday the detection of late blight in a field near Burbank.  Extension specialist Tim Waters told the Washington Ag Network it’s important that growers adjust their fungicide schedule, especially in the Burbank area.   “...

According to Washington State University the likelihood of late blight being reported in Columbia Basin Potatoes has increase from this time last week.  Despite the increase, the likelihood still remains lower than the previous two years.  ...

The possibility of late blight in potato fields continues to increase and it could get worse.     Washington State University’s Dennis Johnson released updated probability forecasts of late blight and it jumped to 85 percent in Othello, 71 percent in Pasco, 69 percent in Hermiston and 22 percent in Prosser.   And fo...