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Updated Weed Control Guide For Ohio, Indiana And Illinois Now Available

By Emma Hopkins
 
The Extension services of Ohio State University, Purdue University and the University of Illinois have partnered to publish an updated weed control guide to aid crop farmers in choosing an effective weed management plan.
 
Palmer amaranth
 
The 2015 Ohio, Indiana and Illinois Weed Control Guide is a quick reference farmers can use in the field to identify and manage weeds. It offers specific tips for several individual crops such as corn, soybeans, popcorn, sweet corn, small greens, forages and grazing pastures.
 
The new guide includes expanded sections on Palmer amaranth and marestail as well as an updated index of herbicides. There is also a weed response table which Bill Johnson, a Purdue weed scientist, said will be especially helpful to farmers during preparation for planting season.
 
“The weed response tables are very convenient because they have herbicides listed down the side and weeds across the top, so farmers can find the weeds they have had problems with in the past and know the herbicides that should work best,” Johnson said.
 
Johnson added that once an herbicide is chosen, crop producers can go to the herbicide section of the guide to find a concise profile summarizing its label. The guide is updated with new herbicides and their control recommendations.
 
The guide can be downloaded from Purdue Extension’s The Education Store at www.edustore.purdue.edu. To find the guide, search for its product code, WS-16-W.
 
Printed copies of the guide are available through the Ohio State University Extension eStore for $14.75 each. The product code for the print copy is 789. An interactive PDF e-book with links for easy navigation is also available through the Ohio State eStore for $9.99. The product code for the ebook is e789.
 

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Dr. Emerson Nafziger: Nitrogen Fertilizer Rates for Corn

Video: Dr. Emerson Nafziger: Nitrogen Fertilizer Rates for Corn

The Crop Science Podcast Show, Dr. Emerson Nafziger from the University of Illinois breaks down decades of nitrogen research. From the evolution of N rate guidelines to how soil health and hybrid genetics influence nitrogen use efficiency, this conversation unpacks the science behind smarter fertilization. Improving how we set nitrogen fertilizer rates for rainfed corn is a key focus. Discover why the MRTN model matters more than ever, and how shifting mindsets and better data can boost yields and environmental outcomes. Tune in now on all major platforms!

"The nitrogen that comes from soil mineralization is the first nitrogen the plant sees, and its role is underestimated."

Meet the guest:

Dr. Emerson Nafziger is Professor Emeritus of Crop Sciences at the University of Illinois at Urbana-Champaign, with degrees in agronomy from Ohio State, Purdue, and Illinois. His research has focused on nitrogen rate strategies and crop productivity. He co-developed the Maximum Return to Nitrogen (MRTN) model, which is widely used across the Midwest. His research spans N response trials, hybrid interactions, crop rotation effects, and yield stability.