Chemical Family: Cyclohexanediones. Systemic post-emergence herbicide that is rapidly absorbed and readily translocated from treated foliage to the roots and growing plant. Clethodim is a lipid (fatty acid) inhibitor. Plant lipids (fats) are vital to the integrity of cell membranes and to new plant growth. Broadleaf plants are tolerant to this herbicide family, but a wide range of perennial and annual grasses are susceptible. What it controls: Post-emergence control of annual and perennial[...]

Sethoxydim kills grasses by preventing the synthesis of lipids, but it has little or no impact on broadleaf herbs or woody plants. Sethoxydim is readily degraded through microbial metabolism and photolysis, and possibly by hydrolysis. Numerous degradation products have been identified, some of which are also toxic to plants. The average half-life of sethoxydim in soils is four to five days, but half-lives can range from a few hours to 25 days. Because sethoxydim is water-soluble and does[...]