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Archive for April, 2009

 

Control From Sucking and Chewing Pests

The name of the game in soybeans, like other crops, is harvesting the highest yield possible. One way to lose bushels in a hurry is from aphids.

According to Iowa State University Extension, 2003 on-farm strip trials in Iowa showed up to an 18 bu/A yield loss in the non-sprayed strip compared to the insecticide-treated strip for a aphid-infested field. Others states reported a yield loss as high as 25 bu/A when an infested field was left untreated. (more…)

 

Understanding Aphid Thresholds

Information from Iowa State University Extension Web site

When scouting soybeans for aphids, it’s important to understand the threshold numbers.

Currently, according to Iowa State University, threshold is 250 aphids per plant on 20 to 30 plants sampled throughout the field when aphid populations are on an active increase. (more…)

 

Aphid control needed to control rapid population increase

Growers in the Midwest have been battling the potential decrease in yields from soybean aphids for at least nine years.

According to the University of Minnesota Extension, aphid populations build at a rapid pace, doubling in as little as two days under favorable conditions after they have invaded the soybean plan. This makes scouting and timely treatments important to help protect yields. (more…)

 

Two modes of action help with rapid knockdown and resistance management

With aphids, the rapid reproduction and colonization can cause them to boom from one to 5000 on a single plant in as little as five weeks according to the University of Minnesota Extension.

Leverage® 2.7 insecticide provides growers with two modes of action against sucking and chewing pests. Additionally, one delivers fast pest knockdown while the other helps with residual control. This helps to provide protection for soybean plants longer with just one spray. (more…)

 

From the Field

Sponsored by Leverage® 2.7 insecticide

This section will be regularly updated with information from different university Extension specialists, Bayer CropScience professionals, growers and retailers.

 

What to look for when scouting soybeans

Information and photos from Iowa State University Extension

    The first step to scouting is to understand the pests in your field. Below are short descriptions of Midwest soybean arthropod pests.

(more…)

 

Plant Injury from Soybean Aphids

Information from Iowa State University Extension

Soybean aphid’s feeding damage can be correlated with numerous yield decreasing stresses. According to Iowa State University Extension, these stresses include plant stunting, pod and flower abortion, reduced seed size and seed counts, and puckering and yellowing of leaves. (more…)

 

News You Can Use

Sponsored by Leverage® 2.7 insecticide

The Aphid Alert information is collected through the Integrated Pest Management (IPM) Pest Information Platform for Extension and Education (PIPE) network.

For information on aphids in your area, and aphid scouting progress, click on the map or click here.

 

 

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