Following are a few terms relating to herbicides and their use. In liquids, a.i. may be indicated as pounds per gallon. In dry formulations it is usually given as percent of total weight. Band application is application in a continuous specific area such as in or along a row rather than over an entire area. Directed application is application to weed foliage while avoiding foliage contact of desirable plants.
Drift is the movement of spray particles from application area to nontreated area.
Extremely fine spray particles, high-pressure application and too much wind may cause drift. Formulation is the mixture of active chemical with inert ingredients to ease application or increase safety. Granular means a herbicide is formulated in small pellets to be applied dry to the soil. Nondirected spray application covers all plants without regard to contact on desirable plant foliage. Nonselective herbicide will kill any plant it contacts.