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Syngenta Field Report

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The Syngenta Field Report features information and experts from Syngenta sharing observations about issues growers are dealing with in the fields.

Worried about soybean insect pests?

Mar 22, 2011

Dr. Roy Boykin

With spring just around the corner, March bodes to bring the first signs of warm weather that will begin to thaw the frosty earth and bring blooms to bare trees. However, with the environmental rebirth that occurs each spring comes the inevitable return of a few unwelcome visitors – soybean insect pests
If your fields are typically threatened by damaging soybean insect pests, a reliable and effective insecticide is a top priority. Once threshold levels have been reached, soybean pests such as soybean aphid, bean leaf beetle and stinkbugs, can rapidly reduce soybean yields. Soybean aphid populations can double every two to three days if conditions are favorable. Even a weekly scouting trip can miss this exponential population growth. A University of Missouri Extension publication states bean leaf beetle can cause complete pod loss by feeding at the base of the pod, a process known as “pod clipping.” Pod clipping creates pod lesions, making the plant more susceptible to pathogens such as bean pod mottle virus and southern mosaic virus. Stinkbugs target the soybean pod as well, using their piercing mouthparts to remove fluids from developing pods. 
The most effective option for controlling insect outbreaks is to choose an insecticidethat offers the trans-stemic  movement of thiamethoxam throughout soybean leaves. Thiamethoxam quickly penetrates the outer leaf surface and, once inside the leaf, forms a reservoir of active ingredient. This reservoir of active ingredient is then protected from environmental factors like wash off from rain and UV degradation from sunlight.
 
The diagram above compares thiamethoxam with two other active ingredients. Seventy-two hours after the application, a significantly higher percentage of the thiamethoxam applied has moved from the leaf surface and into the interior of the leaf than the other two active ingredients. The trans-stemic uptake of the thiamethoxam can then provide longer residual control of economically damaging insects feeding on both the upper and lower leaf surfaces while having minimal impact on beneficial insects as they move across the leaf surfaces.
 

While impending warm weather may have you worried about insects impacting your soybean yields this season, you can trust an insecticide with three industry-leading technologies, that includes thiamethoxam, for optimal control of a broad-spectrum of soybean insect pests.


Dr. Roy Boykin, Senior Technical Brand Manager, Insecticides, Syngenta Crop Protection
Roy is responsible for the technical development, positioning and product life cycle management of insecticides for all business units in the NAFTA Region. Roy received his undergraduate education at the College of Charleston with majors in biology and business and received his master’s/doctorate degrees in entomology with minors in plant pathology and crop science from North Carolina State University.

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