Aminocyclopyrachlor-methyl

Aminocyclopyrachlor-methyl is a herbicide that mimics indole-3-acetic acid (IAA). It targets the IAA signaling pathway and is readily absorbed by the leaves and roots of susceptible plants. Aminocyclopyrachlor-methyl significantly inhibits the growth and biomass of trumpet creeper (Campsis radicans) as well as the growth and regeneration of mugwort (Artemisia vulgaris), effectively controlling these weeds.

Aminocyclopyrachlor-methyl, when applied postemergence at rates between 8.75 and 70 g·ha⁻¹, achieves a control effectiveness of 58% to 99% on Campsis planted in greenhouses, reaching up to 99% control with the 70 g·ha⁻¹ dosage while significantly reducing fresh biomass. At higher doses (70-280 g·ha⁻¹; postemergence), it provides 77% to 99% control, inhibiting stem growth and reducing population density and dry biomass. The herbicide exhibits dose-dependent effects on Artemisia, achieving 95% to 98% visual control, near-complete population reduction, and total biomass elimination 365 days after treatment (DAT) at doses of 140-280 g·ha⁻¹. In greenhouse applications, 70-140 g·ha⁻¹ postemergence foliar treatment resulted in 79% to 92% visual control of Artemisia 28 days after application and completely inhibited regrowth at 70 and 140 g·ha⁻¹ doses 60 days after application.