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University of Illinois Retirement and New Career

  • October 28, 2015
  • Michael Gray

On October 31, 2015, I will retire from the University of Illinois and on November 9, 2015, begin a new career with Monsanto Company, St. Louis, Missouri as Sustainable Agricultural Systems Lead. So, my actual retirement will be short-lived. In this new Regulatory Policy & Scientific Affairs position, I will have responsibilities for advancing important sustainability initiatives and advanced agricultural technology platforms. This position will require close collaboration across multiple teams including Monsanto’s Regulatory,…

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Considerations for Weed Management in 2016

  • October 28, 2015
  • Aaron Hager

Here is the second installment with additional considerations for weed management in 2016.
Resistance remains
Herbicide-resistant weed populations continue to be a common occurrence across most areas of Illinois. Waterhemp and horseweed (marestail) are the two most common herbicide-resistant weed species in Illinois, and observations during 2015 suggest these species are likely to remain prevalent in 2016. Approximately 1700 waterhemp samples (representing 338 fields) were submitted to the University of Illinois Plant Clinic in 2015 for herbicide resistance screening.…

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Considerations for Weed Management in 2016

  • October 27, 2015
  • Aaron Hager

One of the founding fathers of the United States is often credited as the source of the phrase “in this world nothing can be certain, except death and taxes.” Scholars and pundits alike have added other “certainties” to this relatively short original list, so perhaps we can enjoy a sense of serenity to suggest another: weeds. Even with all the time and resources expended to control weeds in 2015, one can be reasonably confident this persistent foe will again plague Illinois fields in 2016.…

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Online courses target weed & crop management

  • October 20, 2015
  • Aaron Hager

Each year the University of Illinois Extension’s regional Crop Management Conferences offer hours of research-based education to farmers, Certified Crop Advisors, and other agricultural professionals. Interactive online courses were developed from 2015 conference presentations by University of Illinois Department of Crop Science faculty:

  • New (and old) Tools for Delaying and Coping with Herbicide Resistance – Dr. Adam Davis, USDA Weed Ecologist
  • Confirming Herbicide Resistance – Dr. Aaron Hager, Extension Weed Scientist
  • Corn &

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Another CORN DISEASE ALERT: New Bacterial leaf disease ‘Bacterial Stripe’ (Burkholderia andropogonis) of Corn identified in Illinois

  • October 5, 2015
  • Suzanne Bissonnette

Symptomatic corn leaf samples from Champaign County, Illinois have been confirmed positive for the bacterium Burkholderia andropogonis (Pseudomonas adropogonis (Smith) Stapp.) the causal agent of Bacterial Stripe disease by the University of Illinois Plant Clinic. This has been reported to the Illinois Department of Agriculture and the USDA. The pathogen was identified by symptomology, bacterial colony characteristics and  16S DNA sequencing.
Bacterial stripe foliar symptoms unfortunately are similar to other endemic bacterial leaf pathogens of corn,…

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Making Input Decisions for Corn Rootworms in 2016 – Check out New Webcast

  • September 24, 2015
  • Michael Gray

Producers throughout the Corn Belt are in the midst of harvest operations. However, it’s not too soon to begin evaluating the value of corn rootworm inputs for 2015 and their potential value for the 2016 growing season. Earlier this month, the Plant Management Network posted a new webcast titled Estimation of Efficacy Functions for Products Used to Manage Corn Rootworm Larval Injury. The webcast was created by Dr. Nicholas Tinsley,…

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CORN DISEASE ALERT: New Fungal Leaf disease “Tar spot” Phyllachora maydis identified in 3 northern Illinois counties

  • September 21, 2015
  • Suzanne Bissonnette

Tar spot confirmed:  Announced by the Illinois Department of Agriculture today. Corn leaf samples from 3 northern Illinois counties have been confirmed positive for the fungus Phyllachora maydis by Megan Romby National Plant Pathologist with the USDA Animal Plant Health Inspection Service in Beltsville, MD. Positive counties in Illinois are LaSalle, DeKalb and Bureau. The samples were collected from commercial fields by Monsanto breeders and pathologists and sent to Dr. Kiersten Wise in response to her inquiry for samples and distribution information of the Tar spot pathogen.…

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Sugarcane Aphid Infestations Worthy of Attention in Southern Illinois Grain Sorghum

  • September 9, 2015
  • Michael Gray

On August 10, 2015, Dr. Doug Johnson, an Extension Entomologist with the University of Kentucky reported that the sugarcane aphid, Melanaphis sacchari (Zehntner), was collected in two western Kentucky counties (Fulton County and Graves County) on grain and sweet sorghum. The identity of the aphids was confirmed by Dr. Lee Townsend, Extension Entomologist, University of Kentucky. To date, this aphid has largely affected sorghum producers in several southeastern states as well as Kansas,…

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Call for Grain Samples, 2015

  • September 4, 2015
  • Emerson Nafziger

With funding from the Nutrient Research & Education Council (NREC) we started a project in 2014 to try to get a better idea for how much nitrogen (N), phosphorus (P), and potassium (K) are contained in harvested grain of corn, soybean, and wheat.
In 2014 we tried to get yield level for each sampled field in order to see if yield level affects nutrient content. We found that it did not, and so we dropped the requirement to include yield level (will leave it as an option) and ask only for the county in which the sampled field was located.…

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Western Corn Rootworm Densities Far Below Average in Illinois Corn and Soybean Fields

  • September 2, 2015
  • Michael Gray

As part of a USDA National Institute for Food and Agriculture (NIFA) sponsored grant, surveys of insect pests were conducted in randomly selected corn and soybean fields across 28 counties throughout Illinois this summer. Fields were sampled during two discrete periods: July 27 – July 31 and August 12 – August 24. Within each county, five cornfields and five soybean fields were sampled. Within a cornfield (away from the field edge and end rows), 20 consecutive plants were examined carefully for northern and western corn rootworm adults.…

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