Postemergence Weed Control in Spring Wheat with Vios FX Herbicide tank-mixes at Hettinger, ND, 2025.

A trial was conducted to evaluate Vios FX Herbicide tank-mixes for postemergence 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 3.8 inches in height. Other weeds present included green foxtail (3.4 in), and wild oat (6.6 in). Kochia control with Vios FX alone was 75% at 15 days after treatment (DAT) and 87% 30 DAT. Addition of other herbicides as tank-mixes did not improve kochia control 30 DAT. Green foxtail control with Vios FX was 89% 30 DAT. Addition of other herbicides did not improve green foxtail control and in some cases, foxtail control was reduced when other herbicides were tank-mixed. Wild oat control with Vios FX was 86% 30 DAT. Similar to other weeds, there was no improvement in wild oat control when other herbicides were tank-mixed. 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.