Illinois Corn, Soybeans: Grape Colaspis – A Pre-Season Primer

🕔Apr 17, 2019Grape colaspis is a common insect, but it only occasionally affects corn and soybean production in Illinois. However, 2018 was that rare year where “outbreak” levels of infestation occurred in […]

Illinois Corn, Soybeans: How Will Cold Temps Affect Pests, Pathogens?

🕔Feb 11, 2019Many in the Illinois agricultural community are wondering what effects the recent extreme cold might have on pests and pathogens. While it would be nice if the cold temperatures we are experiencing could […]

Illinois: Corn Rootworms – Amid Bt Resistance, What Control Options Work?

🕔Jan 30, 2019Producers across east-central Illinois have enjoyed low western corn rootworm pressure for several years, due to a combination of saturating rains during rootworm egg hatch and widespread use of Bt […]

Illinois Bt Corn: Rootworm Resistance? You Still Have Options

🕔Jan 21, 2019The development of resistance to Bt Cry toxins by the western corn rootworm is a growing concern, highlighted by the recent confirmation of field-evolved resistance to Cry34/35Ab1 in Iowa. Across […]

Illinois Soybeans: Dectes Stem Borer and Lodged Plants

🕔Nov 29, 2018Many soybean growers have had problems with lodging at harvest this year. The primary culprit for this (as for many of our woes this fall) was the extended period of […]

IPM: Economic Thresholds – What Are They, How Are They Developed?

🕔Oct 25, 2018An insect control action (such as spraying an insecticide or planting a corn hybrid that incorporates a Bt trait) is only justified once the population of an insect pest reaches […]

Illinois Corn, Soybeans: Big Year for Japanese Beetles

🕔Jul 20, 2018It is proving to be a big year for Japanese beetles in Illinois, and while populations should be starting to decline in much of the state, there is still a […]

Illinois: Crop Sciences Field Day, Monmouth, July 18

🕔Jul 9, 2018The Northwestern Illinois Agricultural Research and Demonstration Center near Monmouth has scheduled a field day for July 18. University of Illinois crop sciences faculty, researchers, students, and Extension specialists will […]

Illinois: Western Corn Rootworm – Adult Sampling and Economic Thresholds

🕔May 31, 2018Based on degree day accumulations, western corn rootworm egg hatch should be underway in much of Illinois (roughly south of Peoria as of May 29; you can view your specific […]

Illinois Corn: 4 Black Cutworm Management Considerations

🕔May 21, 2018With corn planting wrapping up throughout most of Illinois, the time has come to scout for cutworms. While several species of cutworms infest early season corn, black cutworm (Agrotis ipsilon) […]

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