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The 2024 WC94 provides useful information for the selection of herbicides to be used for weed management in soybeans, corn and pasture grown in Iowa. Herbicide injury symptoms that may occur on crops are described as well as timely discussions about evolved herbicide resistance in Iowa, issues with invasive weeds and the potential for herbicide carryover.

The 2022 Iowa Farm and Rural Life Poll (IFRLP) surveyed farmers about their attitudes and behaviors related to weed and herbicide resistance management. This topic was included due to rising concern from agricultural stakeholders regarding a growing body of research documenting increased numbers of weeds that have evolved resistance to one or more classes of herbicide. This report summarizes the findings to help inform strategies to tackle resistance effectively.

Whether you’re a hobby farmer, large-scale grower, or agronomist, keeping records will not only help you define your bottom line, but will also help you make sure you’re being as efficient as possible with your inputs. Keeping detailed and accurate farm records provides numerous benefits for your farming operation. This publication was designed to help farmers accurately measure herbicide program success, as well as help to design future weed management strategies.

Research is ongoing regarding herbicide control methods for Palmer amaranth. The Farm Service Agency is working to approve broadcast herbicide applications to be used in CRP land. This publication discusses both the preemergence and postemergence herbicides that have been approved to control Palmer amaranth.

Interest in cover crops has dramatically increased due to their many potential benefits. In addition to conservation purposes, cover crops can provide forage for livestock producers. It is important for livestock producers to consider restrictions on labels of herbicides used earlier in the growing season if they intend to use the cover crop as a forage source.