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The Corn Crop and Sidedress Nitrogen

The weather has turned from cool and wet to warm and dry, with thoughts now turning to when it might rain next. The US Drought Monitor at http://droughtmonitor.unl.edu/ shows no drought in the Corn Belt, and water use is still low, but some plants whose roots are not growing well or are in compacted soil are starting to show afternoon leaf curling, and water demand is increasing as plant growth rates increase.… Read more

Insect Snapshots from the Field

Just a quick overview of some insect issues presenting themselves recently.

True Armyworm

Lots of reports of armyworm being found in wheat and corn. With reports of wheat harvest starting/getting close, reports of armyworm in corn seem to be taking over.… Read more

What to do if you suspect herbicide drift

Each year, the Illinois Department of Agriculture (IDOA) receives approximately 120 pesticide misuse complaints, of which 60% are pesticide drift complaints.  Neighborly discussions before pesticides are applied are important so applicators understand if sensitive plants are growing near the application site. … Read more

Positive signs for nitrogen

The welcome return to Illinois of drier and warmer weather has allowed most of the remaining crops to be planted, and has brought a lot of improvement to the corn crop that struggled through cool, wet weather during the first and third weeks of May.… Read more

Postemergence Herbicides in Corn

The 2017 Illinois corn crop currently is at various stages of development.  Applications of postemergence corn herbicides continue to be made across areas of Illinois, although the recent precipitation has delayed applications in some areas.  Even though applications may be delayed, adequate soil moisture coupled with warm temperatures will certainly promote rapid growth of emerged weeds.… Read more

How much nitrogen is gone?

The heavy rains of late April and early May have paused and the weather has warmed enough to allow corn and soybean planting (or replanting) to resume in Illinois, except in the low spots in some places.… Read more

Corn Replanting and Herbicide Considerations

Following the recent and excessive precipitation, some corn replanting likely will occur when soil conditions are conducive.  We hope that replanting occurs only in small areas of a given field, but in some situations entire fields may have to be replanted. … Read more

A Little Drier, But Not Yet Warm

Very little corn or soybean planting took place in Illinois over the past week, and while planting progress is not far behind average for the end of the first week of May, crop development is starting to lag as temperatures remain cool. … Read more

University of Illinois Weed Science Field Research Tour

The weed science program at the University of Illinois invites all weed management practitioners to our annual weed science field tour, which will be held on Wednesday, June 28 at the Crop Sciences Research and Education Center (a.k.a.… Read more

Impressive Moth Flights across Midwest

Impressive moth flights have not only kept the Illinois insect monitoring network cooperators busy, but neighboring states are reporting lots of black cutworm and true armyworm moth activity as well. The current forecast and planting progress has raised questions about the potential for these pests in the coming weeks.… Read more