Soybean Aphid

Adult whiteflies next to soybean aphid nymphs

jvandyk — Fri, 10 Aug 2007 13:31:25 -0500

Top: Adult whiteflies (right) next to soybean aphid nymphs. Bottom: Adult whiteflies on soybean. (Marlin E. Rice)

Adult whiteflies next to soybean aphid nymphs

jvandyk — Fri, 10 Aug 2007 13:31:25 -0500

Top: Adult whiteflies (right) next to soybean aphid nymphs. Bottom: Adult whiteflies on soybean. (Marlin E. Rice)

Aphids attack!

jvandyk — Fri, 10 Aug 2007 11:36:49 -0500

High numbers, but not all of Iowa experiencing outbreak.

Seed treatment vs insecticid for aphid control

jvandyk — Fri, 10 Aug 2007 11:31:29 -0500

Performance of a seed treatment (thiamethoxam, dotted line) compared to untreated soybean and soybean treated with a foliar insecticide (lambda-cyhalothrin, solid line with square). Aphids were scouted every 7 to 10 days on five plants in six, half-acre plots. The foliar insecticide was applied on July 19, 2007.

Extension agronomists update soybean aphid situation

jvandyk — Wed, 01 Aug 2007 10:26:49 -0500

Details on this pest from across the state.

Pest information platform screenshot

jvandyk — Fri, 27 Jul 2007 08:55:49 -0500

Newly revised aphids publication available

jvandyk — Wed, 25 Jul 2007 20:59:10 -0500

Revised for 2007.

Soybean aphids publication

jvandyk — Wed, 25 Jul 2007 20:54:57 -0500

Soybean Aphids in Iowa -- 2007 (SP 247). Available at the Iowa State University Extension Online Store, www.extension.iastate.edu/store

Mid-July soybean aphid update

jvandyk — Thu, 19 Jul 2007 13:25:43 -0500

Aphids are below the economic threshold in most of the state.

Winged soybean aphid

jvandyk — Thu, 19 Jul 2007 13:24:47 -0500

Winged aphid (Marlin E. Rice).

Soybean aphid suction trap

jvandyk — Thu, 19 Jul 2007 13:14:22 -0500

One of four suction traps set up in Iowa in 2005 for soybean aphid sampling. The traps are approximately 20 feet tall to collect winged aphids that are migrating from buckthorn to soybean and back. At this size, the traps are unlikely to collect aphids that fly from one soybean plant to another. Traps run from May through October during the 2007 growing season. (Marlin E. Rice)

Soybean aphids exceed the economic threshold in northeast Iowa

jvandyk — Mon, 09 Jul 2007 11:41:58 -0500

Includes soybean aphid population trends since 2002.

Monitor soybean aphid populations on PIPE

jvandyk — Mon, 02 Jul 2007 08:59:50 -0500

See what's happening across the nation.

Soybean aphid numbers increase...and decrease

jvandyk — Mon, 02 Jul 2007 08:51:12 -0500

Rainfall may be the reason.

Early soybean aphid outbreak--to the east

jvandyk — Fri, 15 Jun 2007 11:28:13 -0500

What does this mean for Iowa soybean growers?

Soybean aphids and ant

jvandyk — Fri, 15 Jun 2007 11:25:18 -0500

Soybean aphids and an ant on a soybean stem. (Marlin E. Rice)

Soybean aphids found in Minnesota and Wisconsin

jvandyk — Wed, 06 Jun 2007 11:09:08 -0500

Field scouting in Iowa should start in 2-3 weeks.

PIPE: Pest Information Platform for Extension and Education

jvandyk — Tue, 27 Mar 2007 16:08:47 -0500

A resource for tracking movement of soybean rust and soybean aphid.

PIPE: Pest Information Platform for Extension and Education

jvandyk — Tue, 27 Mar 2007 16:08:47 -0500

A resource for tracking movement of soybean rust and soybean aphid.

Pest Information Platform for Extension and Education

jvandyk — Tue, 27 Mar 2007 16:04:19 -0500

Pest Information Platform for Extension and Education

jvandyk — Tue, 27 Mar 2007 16:04:19 -0500

Purdue University identifies the #1 predator of soybean aphids

jvandyk — Tue, 27 Mar 2007 14:38:58 -0500

Little bug, big bite.

Insidious flower bug next to a soybean aphid

jvandyk — Tue, 27 Mar 2007 14:34:29 -0500

An insidious flower bug next to a soybean aphid. (Marlin E. Rice)

Soybean pests in 2006: A survey of Corn and Soybean Initiative partners

jvandyk — Tue, 27 Mar 2007 14:00:28 -0500

Survey results are summarized.

Soybean pests in 2006: A survey of Corn and Soybean Initiative partners

jvandyk — Tue, 27 Mar 2007 14:00:28 -0500

Survey results are summarized.

Soybean pests in 2006: A survey of Corn and Soybean Initiative partners

jvandyk — Tue, 27 Mar 2007 14:00:28 -0500

Survey results are summarized.

It was a cold day in Iowa, but did the soybean aphids freeze out?

jvandyk — Mon, 26 Mar 2007 14:56:52 -0500

A probability map gives the answer.

It was a cold day in Iowa, but did the soybean aphids freeze out?

jvandyk — Mon, 26 Mar 2007 14:56:52 -0500

A probability map gives the answer.

Soybean aphid eggs on buckthorn

jvandyk — Mon, 26 Mar 2007 14:52:07 -0500

Two soybean aphid eggs laid next to the bud scales of buckthorn. (Marlin E. Rice)

Probability of soybean aphid supercooling temperatures

jvandyk — Mon, 26 Mar 2007 14:41:42 -0500

Probability of air temperatures reaching or exceeding the mean supercooling point for soybean aphids. (Map provided by Brian McCornack and David Ragsdale, University of Minnesota.)

Probability of soybean aphid supercooling temperatures

jvandyk — Mon, 26 Mar 2007 14:41:42 -0500

Probability of air temperatures reaching or exceeding the mean supercooling point for soybean aphids. (Map provided by Brian McCornack and David Ragsdale, University of Minnesota.)

Biological control of soybean aphids: A Web-based resource

jvandyk — Mon, 26 Mar 2007 14:39:24 -0500

Find information and recommendations for soybean aphid management.

Multicolored Asian lady beetle eating

jvandyk — Mon, 26 Mar 2007 14:35:53 -0500

A natural enemy at work: the multicolored Asian lady beetle eating a winged soybean aphid. (Marlin E. Rice)

Recent study brings "good news" about the soybean aphid

jvandyk — Mon, 26 Mar 2007 14:31:22 -0500

Research results are reported.

Recent study brings "good news" about the soybean aphid

jvandyk — Mon, 26 Mar 2007 14:31:22 -0500

Research results are reported.

Recent study brings "good news" about the soybean aphid

jvandyk — Mon, 26 Mar 2007 14:31:22 -0500

Research results are reported.

Recent study brings "good news" about the soybean aphid

jvandyk — Mon, 26 Mar 2007 14:31:22 -0500

Research results are reported.

Managing soybean aphids in 2007: How will biological control contribute?

jvandyk — Mon, 12 Feb 2007 10:22:38 -0600

Join us for this distance education short course!

Aphids in the air: What is the risk for 2007?

jvandyk — Fri, 15 Dec 2006 16:15:07 -0600

Includes graphs of the 2005 and 2006 populations.

Aphids in the air: What is the risk for 2007?

jvandyk — Fri, 15 Dec 2006 16:15:07 -0600

Includes graphs of the 2005 and 2006 populations.

Spider mites, soybean aphids, and summer temperature

jvandyk — Wed, 02 Aug 2006 16:19:16 -0500

Mites may be of more concern than aphids this year.

Spider mites, soybean aphids, and summer temperature

jvandyk — Wed, 02 Aug 2006 16:19:16 -0500

Mites may be of more concern than aphids this year.

Soybean aphids down in July

jvandyk — Wed, 26 Jul 2006 11:43:13 -0500

But end of July, early August remain critical.

Soybean aphids scattered across Iowa

jvandyk — Thu, 29 Jun 2006 09:48:41 -0500

A suction trap network is monitoring abundance.

Soybean aphid look-alikes; don't be confused by alternatives

jvandyk — Fri, 16 Jun 2006 13:43:28 -0500

Whiteflies and thrips may look similar.

Soybean aphid look-alikes; don't be confused by alternatives

jvandyk — Fri, 16 Jun 2006 13:43:28 -0500

Whiteflies and thrips may look similar.

Soybean aphid look-alikes; don't be confused by alternatives

jvandyk — Fri, 16 Jun 2006 13:43:28 -0500

Whiteflies and thrips may look similar.

First soybean aphids found in May

jvandyk — Wed, 07 Jun 2006 15:12:11 -0500

Sighted near Ames.

Winter temperatures and soybean aphid survival

jvandyk — Fri, 07 Apr 2006 14:11:01 -0500

Can aphids survive Iowa winters?

Winter temperatures and soybean aphid survival

jvandyk — Fri, 07 Apr 2006 14:11:01 -0500

Can aphids survive Iowa winters?