Maximize fertilizer efficiency with time, placement options

Oct 13, 2023

Fertilizers have become more costly in recent years. To assist with getting the most out of your fertilizers, there are a few application methods that can be used for distribution. Two methods for distribution into the soil are deep banding of granular or anhydrous ammonia, as well as broadcast spreading of a granular product – which is not recommended. The timing of the application is crucial to obtaining the most efficient use of the product. It is important to follow the 4Rs of fertilizer application. These recommendations include applying fertilizer at the: Right Source, Right Rate, Right Time and Right Place.

Banding of granular fertilizer or with anhydrous ammonia can be done in the fall after harvest or within the springtime prior to seeding. The key to success is ensuring the applications are done when soil is cool.

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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.