Soybean Cyst Nematode

Surveying Iowa for SCN

jvandyk — Wed, 12 Dec 2007 16:45:29 -0600

Results of two statewide surveys.

Fields sampled for SCN

jvandyk — Wed, 12 Dec 2007 16:41:57 -0600

Distribution of randomly selected fields in Iowa that were sampled in 1995-1996 survey.

Field testing of N-Hibit™ seed treatment in 2007 for management of SCN in Iowa

jvandyk — Wed, 12 Dec 2007 16:32:34 -0600

Research results are presented.

Locations of seed treatment experiments

jvandyk — Wed, 12 Dec 2007 16:22:13 -0600

Locations of experiments in 2007 where N-Hibit™ seed treatment was evaluated for effects on soybean yields and SCN population densities in Iowa.

A new take on soil sampling fields for SCN

jvandyk — Fri, 16 Nov 2007 14:46:31 -0600

The key to SCN management is to discover infestations when population densities are low.

Collecting a soil sample for SCN monitoring

jvandyk — Fri, 16 Nov 2007 14:44:07 -0600

Collecting a soil sample from an SCN-infested field to monitor SCN population densities after resistant soybeans have been grown. (Tom Schultz)

Results of SCN-resistant soybean variety testing become available

jvandyk — Fri, 16 Nov 2007 14:11:55 -0600

Includes map of 2007 trial locations.

Locations of 2007 Soybean Variety Trials

jvandyk — Fri, 16 Nov 2007 14:09:09 -0600

Locations of the 2007 ISU SCN-resistant Soybean Variety Trial Program experiments.

Sample fields this fall for SCN to figure out 2007 or plan for 2008

jvandyk — Thu, 04 Oct 2007 09:16:11 -0500

How to sample and where to send the sample.

Fall soil sampling for soybean cyst nematode

jvandyk — Thu, 04 Oct 2007 09:11:53 -0500

Fall soil sampling of harvested soybean field to test for presence of SCN. (T. Schultz)

Soybean cyst nematode

jvandyk — Wed, 01 Aug 2007 10:40:01 -0500

Adult females and cysts of the soybean cyst nematode. (G. Tylka)

Soybean cyst nematode

jvandyk — Wed, 01 Aug 2007 10:40:01 -0500

Adult females and cysts of the soybean cyst nematode. (G. Tylka)

SCN females on roots signal infestations and possibly ineffectiveness of resistance

jvandyk — Thu, 28 Jun 2007 13:57:12 -0500

Look for nematode females on roots of SCN-resistant soybeans.

Resistant soybeans damaged by soybean cyst nematode

jvandyk — Thu, 28 Jun 2007 13:54:24 -0500

SCN-resistant soybeans damaged by SCN in southwest Iowa. (Greg Tylka)

Soybean cyst nematode size compared to a key

jvandyk — Thu, 28 Jun 2007 13:53:10 -0500

Adult soybean cyst nematode females on soybean roots at tip of key. (Greg Tylka)

Winter annual weeds and SCN: What's the connection?

jvandyk — Tue, 24 Apr 2007 16:48:34 -0500

Could reproduction on winter annuals increase SCN populations?

Soybean cyst nematode female on soybean root

jvandyk — Tue, 24 Apr 2007 16:44:55 -0500

Soybean cyst nematode female on soybean root. (Greg Tylka)

Soybean cyst nematode: Still a major threat to soybean production

jvandyk — Tue, 27 Mar 2007 14:57:36 -0500

This nematode is widespread and persistent.

Adult SCN female and male

jvandyk — Tue, 27 Mar 2007 14:51:49 -0500

Adult SCN female (left, removed from root) and male (right). (Greg Tylka)

End-of-season SCN densities

jvandyk — Tue, 27 Mar 2007 14:46:41 -0500

End-of-season SCN population densities (eggs per 100 cc soil) in a continuous corn cropping sequence following a soybean crop.

Average yields and end-of-season SCN populations

jvandyk — Tue, 27 Mar 2007 14:45:56 -0500

Typical, average yields and end-of-season SCN population densities for SCN-resistant and -susceptible varieties in a location of the ISU SCN-resistant Soybean Variety Trial program (Churdan and Melrose, 2006).

SCN-resistant soybean varieties: Not all are created equal

jvandyk — Fri, 23 Feb 2007 16:23:54 -0600

The importance of soybean variety trials.

SCN-resistant soybean varieties: Not all are created equal

jvandyk — Fri, 23 Feb 2007 16:23:54 -0600

The importance of soybean variety trials.

How to interpret SCN soil test results

jvandyk — Fri, 15 Dec 2006 15:42:16 -0600

Damage noticeable in dry areas of Iowa.

What's your type?: An HG type test for SCN populations

jvandyk — Tue, 14 Nov 2006 14:49:56 -0600

Greenhouse testing sorts them out.

SCN-resistant soybean varieties for 2007: Many choices, few sources of resistance

jvandyk — Tue, 14 Nov 2006 14:27:21 -0600

Greg Tylka summarizes your options.

SCN-resistant soybean varieties for 2007: Many choices, few sources of resistance

jvandyk — Tue, 14 Nov 2006 14:27:21 -0600

Greg Tylka summarizes your options.

Check fields for SCN to prepare for 2007

jvandyk — Mon, 09 Oct 2006 14:39:47 -0500

Often there are no obvious signs of this pest.

Soybean cyst nematode may cause soybeans to mature early

jvandyk — Wed, 20 Sep 2006 09:51:42 -0500

Symtoms not obvious until populations are high.

Two nematode soil sample analysis options

jvandyk — Wed, 20 Sep 2006 09:26:14 -0500

Learn about how soybean cyst nematode numbers are found.

Two nematode soil sample analysis options

jvandyk — Wed, 20 Sep 2006 09:26:14 -0500

Learn about how soybean cyst nematode numbers are found.

Recent soybean yellowing may be symptom of SCN

jvandyk — Wed, 26 Jul 2006 12:22:32 -0500

Healthy-looking fields may contain nematodes.

Soybean cyst nematode females now apparent on roots

jvandyk — Thu, 29 Jun 2006 10:02:25 -0500

Now is the time to scout.

Spring soil sampling for SCN: It's not too late

jvandyk — Wed, 15 Mar 2006 10:33:14 -0600

Soybean cyst nematodes can reduce yield by over 50 percent.

ISU SCN-resistant soybean variety trial results available

jvandyk — Wed, 15 Feb 2006 09:23:39 -0600

Research results are presented.

ISU SCN-resistant soybean variety trial results available

jvandyk — Wed, 15 Feb 2006 09:23:39 -0600

Research results are presented.

Choosing an SCN-resistant soybean variety: It's not just about yield

jvandyk — Tue, 15 Nov 2005 16:04:22 -0600

Includes research data.

Fall is prime time to sample fields for SCN

jvandyk — Fri, 14 Oct 2005 10:06:06 -0500

Find out how in this article by Greg Tylka.

Soybean cyst nematode will cause early senescence of soybeans

jvandyk — Fri, 23 Sep 2005 15:43:29 -0500

Clues should lead to testing for presence of soybean cyst nematode.

Fall nematode sampling considerations

jvandyk — Fri, 26 Aug 2005 11:47:33 -0500

Greg Tylka tells how and when to sample.

Fall nematode sampling considerations

jvandyk — Fri, 26 Aug 2005 11:47:33 -0500

Greg Tylka tells how and when to sample.

SCN could be responsible for yellow soybean fields

jvandyk — Thu, 28 Jul 2005 12:47:21 -0500

Nematodes present? Plan ahead for next year.

Now's the time to scout for soybean cyst nematode

adminn — Thu, 30 Jun 2005 14:59:28 -0500

Check soybean roots for females and cysts.

SCN-resistant soybean varieties listed in updated publication

jvandyk — Sun, 14 Nov 2004 13:00:00 -0600

Information on 586 varieties.

Fall is prime time to sample fields for SCN

jvandyk — Sun, 03 Oct 2004 14:00:00 -0500

Many fields have not been diagnosed.

It's not too late to sample fields for soybean cyst nematode

jvandyk — Sun, 18 Apr 2004 14:00:00 -0500

Still time to check for the nematode before planting.

There's still time to test fields for SCN

jvandyk — Sun, 27 Apr 2003 14:00:00 -0500

Early detection is important.

Choosing an SCN-resistant soybean variety: It's not just about yield

jvandyk — Sun, 17 Nov 2002 13:00:00 -0600

Variety trial results are presented.

More than 600 SCN-resistant soybean varieties listed in new publication

jvandyk — Sun, 17 Nov 2002 13:00:00 -0600

Includes factors to consider when selecting a variety.

Now's the time to scout for SCN

jvandyk — Sun, 16 Jun 2002 14:00:00 -0500

This nematode has been discovered in all but five Iowa counties.