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Concentration The amount of active ingredient or herbicide in a quantity of diluent, expressed as percentage or as pounds per gallon (lb/gal), etc. ...
Contact herbicide A herbicide that is phytotoxic by contact with plant tissue rather than as a result of translocation. Only that portion of a plant contacted is directly affected. Young seedlings are killed, but perennials may recover because of the unin ...
Crop rotation The practice of growing different crops in succession on the same land, chiefly to preserve the productive capacity of the soil. ...
Cross resistance Resistant plants that are resistant to other herbicides with the same site of action. ...
CRP Conservation Reserve Program. ...
Cuticle Waxy, fatty material that covers plant surfaces such as leaves. ...
Cut-surface application Treatments applied to frills or girdles that have been made through the bark into the wood of the tree. ...
Deciduous plants Plants that are perennial in habit but lose their leaves during winter. ...
Defoliant A material that causes the leaves to fall from plants. ...
Degredation The process by which a chemical is decomposed or broken down into less complex compounds or elements. ...