Wheat Weeds
All Wheat Weeds Content
While Illegal in Tolerant Soybean, Dicamba Can Still Be Applied in Other Crops
While dicamba labels (i.e., Engenia, Tavium, and Xtendimax) for over-the-top applications for tolerant soybeans have been pulled for the 2025 growing season, the herbicide can still be applied in other crops. Below is a guideline for dicamba use in various crops.
Effects of 2,4-D with and without wiper-applied glyphosate on leafy spurge (Euphorbia esula) treated-shoot, shoot regrowth, and root biomass
Fact sheet on the effects of 2,4-D with and without wiper-applied glyphosate on leafy spurge.
Weed Control Field Test Data
Data books to use as a reference to select appropriate herbicide(s) for row crops
Identification and management of common cocklebur
Fact sheet to help identify and manage common cocklebur.
Identification and management of common ragweed and giant ragweed
Fact sheet to help identify and manage common ragweed and giant ragweed.
Current State of Row Crop Weed Management in South Dakota
Results of an online survey to determine how South Dakota stakeholders are currently managing row crop weeds.
Isolated Female Waterhemp Plant Produced Seed: Implications that pollen is in the air
Recent observations by the SDSU Extension Weed Science team highlight that pollen can move far distances to pollinate isolated female plants. This reinforces the need to effectively manage weeds in fields and adjacent areas.
Fall-Applied Residual Herbicides
Many parts of South Dakota can experience dry conditions when residual herbicides are applied, resulting in inadequate weed control. In these areas, residual herbicides can be applied in the fall and take advantage of a longer period to receive activating precipitation.
Perennial Weed Management in the Fall
Most herbicide applications to manage perennial weeds have already occurred. However, now is the time to consider fall applications for weeds that were not treated or escaped the spring application.
Galls on Canada Thistle: Biological Management at Work
A common sight this summer on Canada thistle is odd growths (also known as galls) on stems. These galls are a product of thistle stem gall fly attacking Canada thistle plants.