Soybean
Diseases in Ohio
Soybean
Cyst Nematode
- Symptoms
- at low SCN populations
there are no
above ground symptoms, but yields are lower than expected
- plants may appear
stunted and produce less than desired yields
- high numbers of
SCN will have circular
to oval patches of stunted plants that yellow prematurely
- Environment
- nematodes can feed
on soybean roots at any time of the growing season
- nematodes are most
active at 68° to 86°F
- Survival
- spread on tillage
equipment
- nematodes can reproduce
on winter annuals
- eggs are protected
by the cyst
- Management
- identify fields
with SCN (testing labs listed below)
- manage SCN population
levels by crop rotation
- prevent introduction
- plant resistant varieties
- choose varieties
with different sources of resistance
- control
weed
hosts
- maintain balanced
fertility
- plant early
- SCN
Worksheet
Labs doing SCN analysis:
C.
Wayne Ellet Plant and Pest Diagnostic Clinic
110
Kottman Hall
2021
Coffey Road
The
Ohio State University
Columbus, OH 43210-1087
614-292-5006
http://ppdc.osu.edu
Cost:
$15 per sample
Results
reported: cyst counts per 100cc of soil
Brookside Laboratory Inc
308 S
Main St
New
Knoxville, OH 45871
419-753-2448
419-753-2949 fax
mflock@blinc.com
Cost:
$13 per sample
Results
reported: egg and cyst counts per 100cc of soil
Geophyta Inc
2685 CR
254
Vickery, OH 43464
419-547-8538
419-547-8538 fax
nathan@geophyta.com
Cost:
$15 per sample
Results
reported: cyst counts per 100cc of soil
Spectrum Analytic Inc
Washington CH, OH
800-321-1562
Cost:
$15 per sample
Results
reported: cyst counts per 100cc of soil