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Tag "Christian Krupke"

Indiana: Western Bean Cutworm – Resistance Confirmed

Indiana: Western Bean Cutworm – Resistance Confirmed

👤By Christian Krupke and John Obermeyer, Purdue University Extension Specialists 🕔Sep 8, 2017

Although we have written about the topic in the past, it’s worth re-focusing on the Western bean cutworm (WBC) story for 2 reasons: ear damage is still evident and some larvae are still present and a recent publication in the

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Indiana: Bt Crop Resistance is Expected – Steps to Limit Your Risk – Video

Indiana: Bt Crop Resistance is Expected – Steps to Limit Your Risk – Video

👤By Christian Krupke, Purdue University Entomologist 🕔Sep 8, 2017

Recent reports of resistance to Bt crops in the western corn rootworm, western bean cutworm and other pests have raised fears of “superbugs” that cannot be killed using our established arsenal of Bt hybrids and traits. In fact, resistance is

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Indiana Soybeans: Green Stink Bugs Making an Appearance, What You Should Do

Indiana Soybeans: Green Stink Bugs Making an Appearance, What You Should Do

👤By Christian Krupke and John Obermeyer, Purdue University Extension Specialists 🕔Sep 4, 2017

For the last couple of years, we’ve had reports of noticeable populations of green stink bug in Indiana soybean fields. Some suspected damaged seeds were sent to the Purdue Plant and Pest Diagnostic Lab for analysis during soybean harvest. Unfortunately, there

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Indiana: Soybean Aphids Making Their Presence Known, What You Can Do About It

Indiana: Soybean Aphids Making Their Presence Known, What You Can Do About It

👤By Christian Krupke and John Obermeyer, Purdue University Extension Specialists 🕔Aug 18, 2017

Soybean aphids have begun to show up in a few northern Indiana soybean fields, some are reportedly over threshold. Because of the tremendous variability in aphid numbers from field to field, diligent scouting NOW can pay big dividends. Aphids are

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Indiana Corn: Western Bean Cutworm – Some Unpleasant Surprises in Northern Counties

Indiana Corn: Western Bean Cutworm – Some Unpleasant Surprises in Northern Counties

👤By Christian Krupke and John Obermeyer, Purdue University Entomologists 🕔Aug 4, 2017

Moth flight and egg laying is nearly complete. By now, most larvae have entered the ear, making control very difficult. Consider the factors listed below before attempting treatments. Pest managers in northern Indiana counties have been tracking this pest throughout

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Indiana Corn: I.D. Worms in Silks and Ears

Indiana Corn: I.D. Worms in Silks and Ears

👤By John Obermeyer and Christian Krupke, Purdue University Entomologists 🕔Jul 31, 2017

This year’s Western Bean Cutworm (WBC) flight in northern Indiana counties has been quite impressive. Though it is not over, by looking at the moth captures the past couple weeks we are past peak flight. Most eggs have been laid

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Indiana Corn: Western Bean Cutworm Flight Continues, Scout High Risk Areas Now

Indiana Corn: Western Bean Cutworm Flight Continues, Scout High Risk Areas Now

👤By Christian Krupke, Purdue University Entomologist 🕔Jul 21, 2017

Western bean cutworm flight still impressive. Scouting for eggs should continue for fields not yet treated. Most Bt hybrids will not give control, scouting + insecticide treatment is only option. If possible wait until 90-95% tassel emergence before insecticide treatment.

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Indiana: Western Bean Cutworm Scouting and Treatment – Video

Indiana: Western Bean Cutworm Scouting and Treatment – Video

👤By Christian Krupke and John Obermeyer, Purdue University Entomologists 🕔Jul 7, 2017

We have received multiple questions this past week about treating for western bean cutworm. The simple answer is, scout high-risk cornfields for egg masses and/or early larval damage and treat when over threshold. The timing of insecticide application is more

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Indiana: Western Bean Cutworm Scouting and Treatment Timing – VIDEO

Indiana: Western Bean Cutworm Scouting and Treatment Timing – VIDEO

👤By Christian Krupke and John Obermeyer, Perdue University 🕔Jul 7, 2017

We have received multiple questions this past week about treating for western bean cutworm. The simple answer is, scout high-risk cornfields for egg masses and/or early larval damage and treat when over threshold. The timing of insecticide application is more

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Indiana Corn: Black Cutworm is Risk for Late Planted Crop – Videos

👤By Christian Krupke and John Obermeyer, Perdue Pest & Crop 🕔May 14, 2015

Wow, the last week of heat has really driven up the black cutworm development model. See the following map, most of Indiana should NOW be scouting emerged cornfields, especially in high-risk fields. Significant black cutworm leaf feeding and cutting of

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