Bicyclopyrone
Type: Herbicide
Mode of Action: Inhibiting the enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD)
Common Product Names: Acuron
What is it?
Bicyclopyrone is a chemical compound developed by Syngenta. It belongs to the chemical class of isoxazoline and is categorized under Group 27 according to the Herbicide Resistance Action Committee (HRAC). Bicyclopyrone is primarily a systemic herbicide, meaning it is absorbed by plants and transported throughout their tissues. It is selective, targeting specific weeds without harming certain crops. The primary area of use for Bicyclopyrone is in corn, where it controls a broad spectrum of broadleaf weeds. It is typically applied at a low to moderate use rate.
How does it work?
Bicyclopyrone works by inhibiting the 4-hydroxyphenylpyruvate dioxygenase (HPPD) enzyme in susceptible plants. This enzyme is essential for the production of carotenoids, which protect chlorophyll from photodegradation. By inhibiting HPPD, Bicyclopyrone leads to the bleaching of tissues and ultimately the death of the weed. The visible effects on weeds typically become apparent within a few days to weeks after application, depending on the weed species and environmental conditions.