Postemergence Weed Control in Spring Wheat at Hettinger, ND, 2025.

A trial was conducted to evaluate postemergence herbicides for weed control in spring wheat. Spring wheat was planted on May 5, 2025. Herbicide treatments were applied on June 18 when wheat was in early tillering stage and 14 inches in height (see Table 1 for treatments and Table 2 for description of application). At time of application, kochia averaged 2.2 inches in height and was found at a density averaging 53 kochia per square foot. Other weeds present included green foxtail (2.2 in), and tame buckwheat (3.4 in). Kochia control with Huskie FX at 15.5 and 18 oz/A was 82 and 87%, respectively, 30 days after treatment (DAT). Kochia control with Tolvera (85% at 30 DAT) was similar to Huskie FX. Green foxtail control was poor in all treatments except Tolvera (94% at 30 DAT). Tame buckwheat control was 85 to 90% with all treatments except Talinor (68%) and Tolvera (79%). Wheat yield was similar for all herbicide treatments. While there was no yield increase, uncontrolled weeds increase soil seed bank levels and could be more troublesome in rotational crops.