Resistant head scab found in northeastern U.S.

decrease font size  Resize text   increase font size       Printer-friendly version of this article Printer-friendly version of this article

Colleagues in New York have just documented an isolate of Fusarium graminearum from N.Y. wheat that is highly resistant to tebuconazole (an active ingredient in Prosaro, Folicur and others) from just a small pilot survey of N.Y. isolates.

This is alarming because the triazole group of chemicals is the main fungicide tool we have in the fight against vomitoxin.

Be selective about your use of these and other fungicides–every application gets us a bit closer to fungicide resistance in our fungus populations. Resistant wheat leaf disease fungi have been found in Europe and the US, and now we know that resistant head scab fungi are out there too. We tend to get the best bang for our buck in PA by a single fungicide application to protect the flag leaf as it emerges.

In situations where powdery mildew is a problem (high humidity, mild temperatures, heavily N fertilized, susceptible cultivars grown), an early application of a fungicide can also provide an economical yield benefit. Be sure the applications you make fit your situation for disease control. In other words, a fungicide in the tank at topdressing or herbicide time might not give you as much benefit as you think when you consider the possible consequences.

The most recent fungicide efficacy chart has been released by the North Central Regional Committee on Management of Small Grain Diseases. This combines data across several states from many different studies to provide information on the most common products and how well they work on our most common wheat diseases.

This helpful resource can be found here: Fusarium Head Blight Prediction Center

While it’s still pretty early to be thinking about wheat head scab, do yourself a favor and bookmark this FHB predictor tool (  Visit this website as your wheat approaches the flowering stage to find out if weather conditions put it at high risk.

I will add commentary about disease risk in our area to give some human perspective, and you can have this commentary sent to your e-mail or phone by signing up for U.S. Wheat & Barley Scab Initiative’s (USWBSI) FHB Alerts.

Buyers Guide

Doyle Equipment Manufacturing Co.
Doyle Equipment Manufacturing prides themselves as being “The King of the Rotary’s” with their Direct Drive Rotary Blend Systems. With numerous setup possibilities and sizes, ranging from a  more...
A.J. Sackett Sons & Company
Sackett Blend Towers feature the H.I.M, High Intensity Mixer, the next generation of blending and coating technology which supports Precision Fertilizer Blending®. Its unique design allows  more...
R&R Manufacturing Inc.
The R&R Minuteman Blend System is the original proven performer. Fast, precise blending with a compact foot print. Significantly lower horsepower requirement. Low inload height with large  more...
Junge Control Inc.
Junge Control Inc. creates state-of-the-art product blending and measuring solutions that allow you to totally maximize operating efficiency with amazing accuracy and repeatability, superior  more...
Yargus Manufacturing
The flagship blending system for the Layco product line is the fully automated Layco DW System™. The advanced technology of the Layco DW (Declining Weight) system results in a blending  more...
Yargus Manufacturing
The LAYCOTE™ Automated Coating System provides a new level of coating accuracy for a stand-alone coating system or for coating (impregnating) in an automated blending system. The unique  more...
John Deere
The DN345 Drawn Dry Spreader can carry more than 12 tons of fertilizer and 17.5 tons of lime. Designed to operate at field speeds up to 20 MPH with full loads and the G4 spreader uniformly  more...
Force Unlimited
The Pro-Force is a multi-purpose spreader with a wider apron and steeper sides. Our Pro-Force has the most aggressive 30” spinner on the market, and is capable of spreading higher rates of  more...
BBI Spreaders
MagnaSpread 2 & MagnaSpread 3 — With BBI’s patented multi-bin technology, these spreaders operate multiple hoppers guided by independent, variable-rate technology. These models are built on  more...

Comments (0) Leave a comment 

e-Mail (required)


characters left

Blend and Bulk Tower Systems

Waconia Towers provide speed, efficiency and reliability that only gravity-fed systems can offer. Towers are available with up to 300 ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Feedback Form