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Glufosinate is the only commercialized glutamine synthetase herbicide in the United States. Glufosinate belongs to phosphinic acid chemistry. It is a broad-spectrum postemergent herbicide that controls most annual grasses and broadleaves.
(not ACCase Inhibition) Herbicides in this mode of action are most effective on annual grasses and some broadleaf weeds. In general, these herbicides are applied preplanting or preemergence and incorporated into the soil.
Long Chain Fatty Acid Inhibitors are preemergent herbicides that are used to control annual grasses and some small-seeded broadleaf weeds in a variety of crops. They do not control or seriously damage emerging plants.
Microtubule Inhibitors are generally applied preemergence to control annual grasses and some broadleaf weeds in many crops and turf grass. These herbicides are absorbed by both roots and shoots of emerging seedlings but are not readily translocated.
PSI Electron Diverters are primarily nontranslocated herbicides that are light activated. These are relatively nonselective chemicals used to control all existing vegetation and as preharvest desiccants. PSI Electron Diverters belong to bipyridylium chemistry.
Photosynthetic Inhibitors control many broadleaf and some grass weeds. In general, these herbicides inhibit photosynthesis by binding to D1 proteins of the photosystem II complex in chloroplast thylakoid membranes.
ACCase Inhibitors are primarily used for postemergence grass control in broadleaf crops. These herbicides are absorbed through the foliage and translocated in the phloem to the growing point, where they inhibit meristematic activity.
The acetolactate synthase (ALS) inhibiting herbicides, also called acetohydroxyacid synthase (AHAS), have a broad spectrum of selectivity and are used at low rates as soil-applied or postemergence treatments in many cropping systems, trees and vines, roadsides, range and pasture, turf, and vegetatio...
Synthetic Auxins and Auxin Transport Inhibitors are generally used for controlling broadleaf weeds in grass crops, pastures, and industry. These herbicides include some of the more effective chemicals for perennial broadleaf weed and brush control.
