Kansas soybean disease update

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

click image to zoomPhoto courtesy of Dept. of Crop Sciences, University of Illinois.Pythium blight in soybeans. Heavy rains in May and June over parts of north central, northeast, and east central Kansas resulted in the highest incidence of Pythium seedling blight in recent years. Disease pressure was so high that even where a fungicide seed treatment was used, some fields suffered significant stand loss. Many fields required spot or complete replanting. Some fields with isolates of Pythium that tolerate higher soil temperatures continued to have problems even in to July.

Except for areas north of U.S. Hwy 24, the rainfall was sparse in the critical months of June, July and August. Common foliar diseases such as brown spot and frogeye leaf spot were absent from most fields except along the Nebraska border. The hot, dry weather proved to be highly favorable for the development of charcoal rot, bringing statewide losses to the highest levels since 2006.

On the positive side, because of lower rainfall amounts, soybean sudden death syndrome was at its lowest level since the 2005 growing season, being confined mostly to irrigated fields with a previous history of the disease.

click image to zoomPhoto by Stu Duncan, K-State Research and Extension.Field of soybeans in northeast Kansas, spring 2011, showing stand loss due to Pythium blight. A statewide survey for soybean cyst nematode (SCN) started in 2011 is revealing that less than 10 percent of Kansas soybean fields are infested, and the majority of these have SCN levels in the range where only low to moderate losses are likely occurring. In some counties such as Cherokee County in southeast Kansas, however, the percentage of fields infested is approaching 50 percent — with a few having nematode levels that are likely causing significant yield loss.

Other diseases identified in 2011 include bean pod mottle virus, Phytophthora root rot, stem canker, bacterial blight, and iron deficiency chlorosis.

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

Grain Storage Systems

Behlen Grain Storage Systems offers large capacity bins with diameters from 16’ to 157’ and capacities exceeding 1,500,000 bushels. All ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Feedback Form