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A pre-emergence spray of herbicide being added onto a field of oilseed rape. Preemergent herbicides are a form of chemical weed control which prevent germinated weed seedlings from becoming established. In some areas of the world, they are used to prevent crabgrass from appearing in lawns. [1]
Pages in category "Preemergent herbicides" The following 18 pages are in this category, out of 18 total. This list may not reflect recent changes. ...
Preemergence: Preemergence herbicides are applied before the weed seedlings emerge through the soil surface. Herbicides do not prevent weeds from germinating but they kill weeds as they grow through the herbicide-treated zone by affecting the cell division in the emerging seedling.
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Herbicide options are limited for these minor crops, particularly in the vegetable sector. [4] Long-term field studies performed by the German government and institutions together with farmers call pendimethalin efficient for controlling blackgrass, regarding weed control efficacy, crop yield, treatment costs and environmental impact.
Trifluralin is a common pre-emergent selective herbicide, a dinitroaniline.With about 14 million pounds (6,400 t) used in the United States in 2001, [3] and 3–7 million pounds (1,400–3,200 t) in 2012, [4] it is one of the most widely used herbicides.