Stripe Rust Spotted Near Hazelton May 22nd

I have had the first report of stripe rust in Idaho this year in the Hazleton area on Brundage soft white winter wheat. It was first seen 22 May by the pilot for Red Baron, Clay Seamons, and reported to me by Jared Hobson. Clay sent pictures and yes it is stripe rust. 

Please scout susceptible varieties!! I will be traveling through the area on Thursday for BYDV scouting and impact assessments, but will also make additional confirmation of stripe rust. If this is the case, I am not surprised given the flow of wind from the south west where stripe rust is consistently an issue in California. It could have blown in from there. The current weather is favorable for infection and spread. winter wheat is heading and fungicides can be sprayed up to 50% flowering. I have a fungicide efficacy chart available at: 

http://www.extension.uidaho.edu/scseidaho/ 

I would love to hear from you if you have additional suspected fields! 

Juliet Marshall, Ph.D.
Associate Professor, Cereals Pathology and Agronomy

Idaho Falls R&E Center
1776 Science Drive Suite 205
Idaho Falls, ID 83402
208-529-8376 office
208-390-4859 cell

http://www.extension.uidaho.edu/scseidaho/

Table 4. Resistance to stripe rust and leaf rust in Leaf rust selected Washington wheat varieties. a Adapted from the 1985 ratings of the Washington State Crop Improvement Association. Winter Wheat
Type	Variety	Stripe Rust	Leaf Rust
Soft White	Daws	MR	MS
	Dusty	R	MS
	Hill 81	MR	MR
	John	MS	S
	Lewjain	R	MS
	Nugaines	MS	S
	Sprague	MS	MS
	Stephens	R	S
Soft White Club	Crew	MR	MR
	Moro	MS	S
	Tres	MS	MS
	Tyee	MS	S
Hard Red	Batam	R	S
	Hatton	HR	S
	McCall	MS	S
	Wanser	MS	S
Spring Wheat
Type	Variety	Stripe Rust	Leaf Rust
Soft White	Dirkwin	R	MR-S
	Edwall	MR	R
	Fielder	S	MS
	Urquie	MR	S
	Waverly	MR	MR
	WS-1	R	R
Hard Red	McKay	R	R
	Wampum	R	MR
	Wared	MR	MR
	Yecoro Rojo	S	R
S = Susceptible;seedlings, adult plants, and heads susceptible. MS = Moderately susceptibel; seedlings and head susceptible. Adult plants moderately resistant. MR = Moderately Resistant; seedlings and heads susceptible. Adult plants resistant. R = Resistant; seedlings, head and adult plants resistant.