By Scout Nelson
Kansas State University's weed specialist, Sarah Lancaster, highlights the essential updates in the university's 2024 Chemical Weed Guide. The guide, a cornerstone for chemical control in Kansas, has undergone significant changes, including new guidelines for labeling, legal practices, and product use.
One of the major updates is the registration of atrazine-containing herbicides under 24(c) labels, impacting their use on row crop stubble. Lancaster notes that atrazine applications in fall to milo or corn stubble are no longer labeled, although its use on wheat stubble remains unchanged. This change aims to maintain the utility of atrazine amidst environmental scrutiny.
The guide introduces Kyro, a new postemergence herbicide for corn, containing topramazone and differing from Resicore by its exclusive postemergence activity. Another addition is Store, akin to Acuron but with added pyroxasulfone, combining two effective active ingredients from group 27 and group 15 herbicides.
Lancaster also discusses atrazine's absence in premixes, attributing this to environmental concerns and the need for site-specific application rates due to varying soil textures and land capabilities.
For wheat, the new herbicide Tarzac, containing halauxifen (similar to 2-4-D) and pyroxsulam, is recommended for controlling marestail and various weedy bromes.
The cotton section of the guide now includes the use of Zidual impregnated on dry fertilizer. The guide features renaming of some imazamox products, like Beyond Xtra, previously known as Raptor for soybeans and alfalfa.
Price trends in 2024 are largely stable, with some like glyphosate and glufosinate seeing a decrease compared to 2023.
The 2024 Chemical Weed Guide, available online, will also be distributed in print after January 1 through the K-State Research and Extension bookstore. Extension educators will provide guides at various winter programs, farm shows, and weed schools throughout the state.
Photo Credit - gettyimages-zoomtravels
Categories: Kansas, Crops