Listen here:
This is Dr. Nathan Mueller, your local agronomist with Nebraska Extension for Dodge and Washington counties. Though many of you don’t grow winter wheat here in Eastern Nebraska, there is a growing interest locally in Dodge, Washington, and surrounding counties. If you are considering planting winter wheat Fall of 2018, planning starts now by reviewing your 2018 corn and soybean herbicide programs.
Many herbicides have rotation restrictions or a minimum time requirement before another crop can be planted following that herbicide application. For winter wheat planted this coming fall after corn and soybeans, any herbicide that was a 4.5 month rotation restriction for winter wheat or longer should not be used this spring. This is to safeguard against any herbicide residual activity in the soil that could potentially damage your winter wheat crop planted this coming fall.
In corn herbicide programs, the active ingredient, atrazine, is used in many corn herbicides products. This is often the reason for the rotation restriction to winter wheat. Other site of action group 5 herbicides that also have rotation restrictions include Simazine (e.g. Princep) in corn. In soybean herbicide programs, the active ingredient Metribuzin (e.g. Sencor), also a site of action group 5, has a rotation restriction. There are other active ingredients and products used in soybeans such as Command, Cadet, Fierce XLT, Rowel, Sceptor, Sonolan HFT, Storm, Teflan HFP, and some others that also have longer rotation restrictions as can limit your ability to plant winter wheat in Fall of 2018.
The rotation restrictions can be found on the herbicide label. You can easily view labels online prior to purchasing your herbicide products. Also, the Nebraska Extension 2018 Guide for Weed, Disease, and Insect Management in Nebraska includes tables listing how many month rotation restrictions there are for a lot of herbicide products to help you assess your corn and soybean herbicide program so you can plant winter wheat this coming fall 2018. The guide can be purchased at your local extension office for $15 or a digital copy purchased online.
To listen to this radio message again and to get more information, you can also visit our local website at croptechcafe.org or give me a call at 727-2775. Know your crop, know your tech, know your bottom line. This is Dr. Nathan Mueller, your local agronomist for Nebraska Extension on KTIC radio.
