What’s up with Chlorpyrifos and Dicamba?
Blog Post
Recent court cases have brought changes to two pesticides with agricultural uses.
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New cut-off date for over-the-top dicamba use in Iowa for 2023
Blog Post
On February 16, the U.S. Environmental Protection Agency (EPA) approved the label amendments that further restrict the use of over-the-top (OTT) dicamba in Iowa, Illinois, and Indiana. For the 2023 season, the revised federal labels for XtendiMax, Engenia and Tavium contains a new cut-off date restriction for OTT dicamba use:
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Regional Update: July 13 - 19, 2022
Blog Post
With hot weather and few rain chances in the forecast, concern turns toward soil moisture reserves and the ever-important pollination timing in corn. ISU Extension field agronomists observed corn rootworm beetles, Japanese beetle feeding, grasshoppers, numerous diseases, and more off-target herbicide movement this week.
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Don’t forget your annual dicamba training for 2022
Blog Post
One of the label requirements for the dicamba products labeled for over-the-top use in soybean (Xtendimax, Tavium, Engenia) is that applicators must complete a special dicamba training annually. If you need to complete this training, go to the Agribusiness Association of Iowa website, and you will find links to the companies’ websites with their training information. Note that the links are found under the heading “Product Labels and Information, see image below.
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Soybean cupping 2021: Iowa Update
Blog Post
In October 2020, EPA approved five-year registrations (until 2025) for dicamba products including XtendiMax (Bayer), Engenia (BASF) and Tavium (Syngenta) for over-the-top use in Xtend and XtendFlex soybeans. These new dicamba product registrations included national cutoff dates (June 30 in most cases) and mandatory use of additional volatility reduction agents (VRAs) in the tank.
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Reporting a Suspected Dicamba Incident
Blog Post
If you have experienced a suspected dicamba incident contact the Iowa Department of Agriculture and Land Stewardship (IDALS) at 515-281-8591 to file a report. You may file an “Incident Report” or a “Documentary Report” with the IDALS Pesticide Bureau.
Reporting dicamba incidents helps evaluate the impact of dicamba use in Iowa and provides valuable information.
Incident Reports
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Protection of Endangered Species where Xtendimax, Engenia and Tavium will be applied.
Blog Post
The 2020 registration for Xtendimax, Engenia and the extension of the Tavium registration included additional restrictions for protection of Endangered Species.
Iowa counties with Endangered Species protection include Allamakee, Cerro Gordo, Clayton, Delaware, Dickinson, Dubuque, Emmet, Hancock, Howard, Jackson, Kossuth and Osceola.
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Use of dicamba on dicamba-resistant soybean
Blog Post
Most people are aware that EPA approved new labels for the dicamba products used on dicamba-resistant crops. The following describes major changes in the labels and important restrictions. The labels only describe use on the dicamba-resistant crops, therefore eliminating some of the confusion on earlier labels.
Major changes to dicamba use on DR soybean
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An Open Letter to the EPA
Dicamba 2020: What went wrong in Iowa?
Blog Post
There is no question that dicamba injury across the Iowa landscape in 2020 is the most extensive it has been since the introduction of dicamba in the 1960s. ISUEO field agronomists and commercial agronomists in several areas of the state report nearly all non-dicamba resistant soybean are showing symptoms characteristic of dicamba, and in many fields the injury is fence row to fence row. This is not the type of injury we have observed in the past; it’s at a landscape level.
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