Here are some good pointers from Dr. Eric Prostko, UGA Extension Weed Scientist, on 2015 Corn Weed Control:
Thanks to Rome Ethredge, Seminole County Ag Agent, for posting this originally. Here is a link to his post: https://seminolecropnews.wordpress.com/2015/02/26/corn-weeds-in-2015/
The first thing we need to do to be successful in managing weeds in our corn crop is to start clean!
Keep in mind that just because you ran a harrow across the field, this does not mean that you are starting clean.
Next, we need to use a preemergence herbicide program. Then come back early with Atrazine+ another postemergence product. Some examples are shown below.
Make sure you come back early with your postemergence sprays. Below is some data from Dr. Prostko that shows what a later herbicide application can do to corn yields.
Lastly, be careful with complex tank-mixes. It is impossible to know how all of our crop protection products will interact when mixed. If you are not sure about a tank mix, do a jar test before mixing it in your sprayer. If you are not sure how to do a jar test, your local county agent can assist you with this process.
Contact your local county agent if you would like more information on Corn Weed control strategies for 2015.