David Wright, Ph.D.
Plant Health Initiative Coordinator
NEW Soybean Cyst Nematode
Management Guide Now Available
Do you have soybean cyst nematode SCN at planting can be expected in
(SCN)? If your answer is areas of fields with soil pH levels of 7.0
YES… Do you know how to to 8.0 compared to areas of soil pH 5.9
get the most out of your to 6.5. Soil pH may also govern the
SCN control strategy? Do degree to which SCN populations
you know the latest control increase in a field after its introduction.
strategy? How often are you The SCN Management Guide is
sampling your infested fields? available free of charge and can be
There’s no such thing as a com- obtained by calling 1-877-SCN-TEST
pletely resistant soybean variety, (1-877-726-8378) or by logging on to
but there are ways to protect the www.planthealth.info and clicking
resistance we do have. on the SCN Management
The new version of the SCN Guide order form. It can
Management Guide was developed also be found electronically
with the soybean producer in at www.planthealth.info or
mind. It answers frequently asked www.ncsrp.com.
questions about SCN and provides The SCN Management Guide
current, science-based management is printed by the North Central
recom-mendations based on decades Soybean Research Program,
of research. which pools funding from 12
If your answer is NO… Have you state soybean checkoff boards
tested your fields lately? SCN has to find real solutions to regional
been found in nearly every county of death syndrome and production problems.
the major soybean producing states other fungal pathogens. The research
west of the Missouri river. SCN is shows that fungal pathogens can infect
rapidly moving west and north into the root of soybean through wounds
new soybean producing areas. caused by SCN. What should soybean
Yield loss from SCN, in the north producers do if they have both SCN and
central states, is estimated at 447 mil- SDS? The SCN Management Guide
lion bushels (1999-2002) costing outlines the latest recom-mendations.
soybean producers an estimated $2.2 The new management guide shows
to $2.6 billion. More yield is lost to producers how they can utilize innova-
SCN than any other soybean disease. tive new tools such as aerial photogra-
This SCN Management Guide phy to scout for areas of SCN infection.
includes new information on how The manual also discusses in detail how
SCN interacts with other soybean soil pH governs the development of
diseases. Recent research suggests SCN and brown stem rot. Results from
that SCN plays a major role in the several years of field studies in northern
development and spread of sudden states indicate that high populations of