Look for SCN females on soybean roots now

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

The soybean cyst nematode (SCN) is one of the most serious soil-borne pathogens of soybean in Iowa and throughout the Midwest. Juveniles of this microscopic worm hatch from eggs in the spring, then burrow into soybean roots, where they attach to the vascular tissue of the plant and feed. Developing SCN females get progressively larger as they mature, until their fully expanded, lemon-shaped bodies rupture out of the root and become visible on the root surface. 

Soybean cyst nematode females are round, white, and large enough to see with the unaided eye. It takes four to six weeks or more for the first SCN females of the season to develop sufficiently to rupture out of and become apparent on the surface of soybean roots. 

The first generation of adult SCN females are appearing now. So, the next six to eight weeks (through July) are prime time to dig roots and check for SCN females in Iowa. 

Plants should not be pulled from the soil because the young roots with the SCN females attached will be stripped off. Instead, roots should be dug with a shovel or spade, and soil should be carefully removed from the roots.

Two reasons to check roots for SCN females

Observing SCN females on roots of susceptible soybean varieties is a quick and easy way to check the presence of this pathogen in a field, which is the first step towards successful management of SCN. 

Checking the roots of resistant soybeans for SCN females in fields that are infested is a good way to monitor the effectiveness of the resistant varieties. 

More information about the biology and management of SCN can be found at www.soybeancyst.info.


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...

Related Articles



Comments (0) Leave a comment 

Name
e-Mail (required)
Location

Comment:

characters left


Convyers

Meridian’s conveyors deliver seed with unmatched versatility. Meridian’s transport conveyors are manufactured with heavy-duty, fully enclosed construction. Meridian’s cross cleated ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Feedback Form