Imazapyr is a non-selective

herbicide Herbicides (, ), also commonly known as weedkillers, are substances used to control undesired plants, also known as weeds.EPA. February 201Pesticides Industry. Sales and Usage 2006 and 2007: Market Estimates. Summary in press releasMain page fo ...

used for the control of a broad range of weeds including terrestrial annual and perennial grasses and broadleaved herbs, woody species, and riparian and emergent aquatic species. It is used to eliminate '' Lithocarpus densiflorus'' (Tan Oak) and ''

Arbutus menziesii ''Arbutus menziesii'' or Pacific madrone (commonly madrone or madrona in the United States and arbutus in Canada), is a species of broadleaf evergreen tree in the family Ericaceae, native to the western coastal areas of North America, from Bri ...

'' (Pacific Madrone). Additionally, imazapyr is used to control annual and perennial grass and broadleaved weeds, brush, vines and many deciduous trees. Imazapyr is absorbed by the leaves and roots, and moves rapidly through the plant. It accumulates in the meristem region (active growth region) of the plant. In plants, imazapyr disrupts

protein synthesis Protein biosynthesis (or protein synthesis) is a core biological process, occurring inside Cell (biology), cells, homeostasis, balancing the loss of cellular proteins (via Proteolysis, degradation or Protein targeting, export) through the product ...

and interferes with cell growth and DNA synthesis. Imazapyr is an ingredient of the commercial product Ortho GroundClear. A related herbicide,

imazapic Imazapic is a chemical used as an herbicide. It controls many broad leaf weeds and controls or suppresses some grasses in pasture, rangeland and certain types of turf. It has a half-life Half-life (symbol ) is the time required for a quanti ...

is an ingredient in Roundup Extended Control. Both chemicals are non-selective, long-lasting, and effective in weed control. They are, however, water-soluble, and depending on soil type and moisture they can move into parts of the landscape where they were not sprayed. Some desirable landscape plants are especially sensitive to them and can be damaged.

References

{{Herbicides Carboxylic acids Herbicides Pyridines Imidazolines Isopropyl compounds