Head scab appearing in some Wisconsin wheat fields

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

The crop and soils agent with the University of Wisconsin-Extension office in Fond du Lac County says Fusarium head blight, or scab as it is often called, is showing up in some area winter wheat fields this year. Mike Rankin said the last severe outbreak of this disease was 2004, though this year doesn't appear to be as bad as that one.

"The disease is cause for concern on several fronts," Rankin said. "The causative fungus has the ability to produce mycotoxins, and scab-infected wheat is often severely discounted or rejected when it is sold."

Though some wheat scab can be found every year, when 10 percent of the spikelets are affected within a field there is cause for concern. At this level, yield, test weight, and grain quality are significantly impacted. Rankin notes that a large amount of rainfall or humidity during wheat flowering sets up a bad head scab year.

"It's relatively easy to identify wheat scab. Either entire heads or individual spikelets on wheat heads turn bleach white prematurely," he said. "On closer inspection, there is generally a pink to salmon colored fungus growing at the base of the infected spikelets. Infected grain heads often produce kernels that are small or shriveled. In some situations there may be no kernel produced at all. At harvest time we often see black secondary organisms grow on the wheat head. This makes for a very dirty and dusty wheat harvest."

Fusarium head blight is caused by a fungus that, in addition to wheat, is a pathogen of corn, barley, and other grasses. The fungus overwinters on infested plant residue of cereals, weedy grasses, and corn. The severity of infection varies greatly from year to year depending on weather conditions during flowering.

Fungicides are available for control of Fusarium head blight. Nutritionists suggest that dairy cattle can tolerate up to five parts per million vomitoxin in the total ration dry matter.


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 

Name
e-Mail (required)
Location

Comment:

characters left


Quickveyor

Made of high quality 304 stainless steel, the Quickveyor is one of the strongest trailers on the market. It’s belt ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Feedback Form