The formation of plant sugars from carbon dioxide and water using the energy of sunlight.
The amount of pesticide residue that may legally remain in or on a food crop.
Any substance or mixture of substances intended for controlling insects, rodents, fungi, weeds, and other forms of plant or animal life that are considered to be pests.
A plant that continues to live from year to year. In many cases, in cold climates the tops die down but the roots and rhizomes persist. Examples: field bindweed, Canada thistle, quackgrass, dandelion.
A dry formulation of herbicide and other components in discrete particles usually larger than 10 cubic centimeters (cc).
Toxicity of a compound when it is ingested.
Organic matter.
Usually refers to aromatic or paraffinic oils used in formulating products, as diluents or carriers for herbicides or for direct use.
A weed defined by law as being especially undesirable, troublesome, or difficult to control.
