Northern Corn Rootworm

The monster in Iowa corn fields

jvandyk — Tue, 13 Feb 2007 12:49:21 -0600

Rootworms to the right of me, rootworms to the left of me...

The monster in Iowa corn fields

jvandyk — Tue, 13 Feb 2007 12:49:21 -0600

Rootworms to the right of me, rootworms to the left of me...

2006 rootworm monitoring sites in Iowa

jvandyk — Tue, 13 Feb 2007 12:25:46 -0600

Field locations: brown circle indicates fields where both a corn and soybean field were monitored for rotation-resistant western corn rootworms and extended-diapause northern corn rootworms; black square indicates fields where northern corn rootworm activity in soybeans following prolonged rotations away from corn were monitored.

2006 rootworm monitoring sites in Iowa

jvandyk — Tue, 13 Feb 2007 12:25:46 -0600

Northern corn rootworm in non-corn rotations

jvandyk — Tue, 13 Feb 2007 11:42:57 -0600

Mean number of northern corn rootworm adults emerging per cage from nine corn fields previously in extended, non-corn rotations.

Northern corn rootworm in non-corn rotations

jvandyk — Tue, 13 Feb 2007 11:42:57 -0600

Mean number of northern corn rootworm adults emerging per cage from nine corn fields previously in extended, non-corn rotations.

Corn rootworm eggs in Iowa soil

jvandyk — Tue, 13 Feb 2007 11:41:06 -0600

Comparison of June and September 2006 soil samples (±SE).

Corn rootworm eggs in Iowa soil

jvandyk — Tue, 13 Feb 2007 11:41:06 -0600

Comparison of June and September 2006 soil samples (±SE).

Northern corn rootworms in soybeans: What does it mean?

jvandyk — Fri, 26 Aug 2005 10:55:22 -0500

Are these beetles changing their behavior?

Northern corn rootworms in corn and soybean

jvandyk — Sun, 16 Sep 2001 14:00:00 -0500

This insect has adapted to corn-soybean rotation in Iowa.