With increasing pressure from herbicide-resistant weeds such as kochia and introduced herbicide-resistant weeds such as Palmer amaranth and waterhemp, it is important to reduce spreading of weed seed. Doing a limited cleaning between fields and choosing which fields to harvest first can be an important factor in this endeavor.
The field day included demonstrations on best practices to reduce herbicide drift, study results on new herbicides to control Palmer amaranth in corn, and discussion on several other research projects.
The in-person Palmer amaranth field day will feature on-site demonstrations on controlling atrazine/glyphosate-resistant Palmer amaranth in Roundup Ready/LibertyLink corn, Enlist corn and non-GMO white corn in Nebraska.
Corn is the most common rotational crop planted the year before dry bean in western NE. However, herbicide programs must be chosen with foresight as many corn herbicides can injure dry beans the next season due to crop rotation restrictions.
There are several ways seeds of Palmer amaranth can be introduced into your fields. Manure is one of them. This article provides some valuable answers on reducing Palmer amaranth seed in feed, reducing Palmer amaranth seed in manure and field application of contaminated manure.