Tag Archives: stripe rust

Stripe rust report 0418: Current stripe rust pressure is low

By Dr. Xianming Chen On Wednesday, we were checking wheat fields in Whitman, Lincoln, Douglas, Grant, Adams, Franklin, Benton and Walla Walla counties of Washington. Winter wheat crops ranged from Feekes 3 to 6.  No rust was found in any commercial fields in these counties. Even in the field of Grant County in which stripe rust was found quite easily ... Read More »

Stripe rust update 0322: Stripe rust likely low this year in eastern PNW

by Dr. Xianming Chen This unusual winter appears over, and spring comes late but suddenly. Based on the forecast models, we predict that stripe rust will potentially cause yield loss of 16 percent on highly susceptible varieties. This level is much lower than the 38 percent forecasted in January due to the cold February. Based the current forecast, stripe rust will likely ... Read More »

First stripe rust report for 2019 calls for normal levels

From Dr. Xianming Chen Field survey in November 2018  On Nov. 16, 2018, our crew was checking winter wheat fields in Whitman, Lincoln, Adams, Grant and Douglas counties in Eastern Washington and found two leaves with stripe rust in only one field in Grant County near the border with Lincoln County. Wheat plants in that field were at Feekes 4. The ... Read More »

Stripe rust season: ‘A good year for farmers’

From the Capital Press The level of stripe rust in Pacific Northwest wheat fields this year mirrored earlier predictions of a normal year, said Xianming Chen, a USDA Agricultural Research Service research geneticist in Pullman, Wash. Read the rest of the story here. Read More »

Stripe rust report 06/16

By Dr. Xianming Chen In the Pacific Northwest, most fields of winter wheat have passed the flowering stage, and some winter wheat fields have reached the ripening stage. In general, winter wheat crops are in good condition and stripe rust is under control. In contrast, stripe rust has developed to the highest severity level on susceptible varieties in our experimental ... Read More »

Stripe rust update 0601: Stripe rust is low in Palouse

By Xianming Chen Last week, we were checking wheat fields in Whitman County of Washington and Latah County of Idaho. Winter wheat ranged from boot (Feekes 10) to flowered (Feekes 10.53). Crops in most fields were in excellent condition. Stripe rust was found in few commercial winter wheat fields in very low incidence (less than <0.1 percent). Most of the ... Read More »

Stripe rust update: Disease is generally low in Eastern Washington, but starting to appear in Palouse

By Dr. Xianming Chen On Monday, we were checking wheat fields in Adams, Lincoln, Douglas, Grant and Whitman counties. Winter wheat crops ranged from early jointing (Feekes 5) to boot stage (Feekes 10). Stripe rust was found in few fields and generally low. No rust was found in most of the checked fields. In the fields found with stripe rust, ... Read More »

Stripe rust hard to find in commercial fields, but present in some areas

By Dr. Xianming Chen Earlier this week, we were checking wheat fields in Whitman, Garfield, Columbia, Walla Walla, Benton, Franklin and Adams counties of Washington and Umatilla County of Oregon. Winter wheat crops ranged from Feekes 4 to 6. Stripe rust was found in breeding nurseries in Central Ferry (Garfield County), our rust monitoring nurseries in Walla Walla, and nurseries ... Read More »

Stripe rust update 03/08: Stripe rust will likely reach a normal epidemic level in the eastern PNW

By Dr. Xianming Chen Based on the forecast models using the weather data from November 2017 to February 2018, stripe rust will potentially cause yield loss of 17.9 percent on highly susceptible varieties. This number is much higher than the 6 percent forecasted in January based only on the November-December weather conditions. The number is an average of the prediction ... Read More »