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Guide to Assessing Percent Defoliation in Soybeans

Treatment thresholds (defined as a point for which you can treat before economic damage is incurred) for foliage feeding insects in soybeans are relatively easy.  The threshold for foliage feeding...

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Yellowstriped Armyworms Present in Northeast North Carolina

Yellowstriped armyworm was first reported by my colleague Dr. Ames Herbert in Virginia this week (click here and scroll down the page).  Like Dr. Herbert, most of what I have heard about is soybean...

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Are You Spraying For the Right Pest? Green Cloverworm versus Loopers

We have had a lot of spraying for defoliating pests this year, especially green cloverworm and yellowstriped armyworm.  Few of these cases were economically justified, however, since our defoliation...

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Managing Bean Leaf Beetle in Soybean- Pod Feeding Threshold

Bean leaf beetle is more common in the eastern part of our state.  There are generally two to three generations of the insect.  Hence, we can see them while beans emerge all the way to when beans dry...

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Resistant Earworms and Budworms Likely in Soybeans

I received several calls today about reports of corn earworm in soybeans.  These reports were unusual for at least one reason.  Earworms seem widespread geographically, but are spotty from field to...

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Should You Spray Insecticide Over Flowering Beans?

The short answer to the question should you spray and insecticide over flowering soybeans is no.  You should only spray if you’ve reached 15% defoliation throughout the canopy or are at one kudzu bug...

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Soybean Loopers are Here- When and What to Spray

Soybean loopers are a migratory pest that we sometimes see in soybeans late in the season. Numbers really picked up in our research plots in the Sandhills region of the state and we’ve picked up more...

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Insecticides for Bean Leaf Beetle

Bean leaf beetles should only be treated if the canopy reaches 15% defoliation throughout during the reproductive stages to R7 (flowering to one brown pod anywhere on the plant) or 30% defoliation...

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Should Soybean Loopers Be Treated This Late?

I’ve had a rash of questions lately on soybean loopers, which have been widespread this year.  To be honest, I’m still surprised they are around, given the weather.  The rule of thumb is that several...

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