Weed Management Handbook

That part of a compound without toxic or killing properties, sometimes called the carrier.

Mixing a herbicide into the soil, generally by mechanical means or with overhead water.

Soil at bottom of the body of water.

A naturally occurring substance in plants that controls growth or other physiological processes. It is used with reference to certain synthetic chemicals that require or affect growth activity.

Spray applications of more than 60 gal/A volume.

A phytotoxic chemical used for killing or inhibiting (stunting) the development or growth of plants.

A plant that remains soft or succulent and does not develop woody tissue.

The probability that injury or detrimental effects will result if a substance is not used properly.

Water that contains certain minerals, usually calcium and magnesium sulfates, chlorides, or carbonates in solution in sufficient amounts to cause a curd or precipitate instead of a lather when soap is added. Generally defined as water containing 332 ppm of calcium carbonate. Very hard water may cause precipitates in some herbicidal sprays.

A substance used for controlling or modifying plant growth processes.