Based on generalized half-life ranges provided, which category of chemical is engineered to resist rapid breakdown for extended control?

Answer

Persistent Herbicides

Persistent herbicides are intentionally formulated to resist quick breakdown so they can offer residual weed control over a prolonged season, exhibiting half-lives ranging from months to over a year.

Based on generalized half-life ranges provided, which category of chemical is engineered to resist rapid breakdown for extended control?
environmentchemicalpersistencesoil