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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] Preemergent herbicides are applied to lawns in the spring and autumn, to prevent the establishment of weed seeds. They will not ...
Pages in category "Preemergent herbicides" The following 18 pages are in this category, out of 18 total. This list may not reflect recent changes. ...
Shqip; Simple English; ... Preemergent herbicides (18 P) S. Sulfonylurea herbicides (5 P) Systemic herbicides (5 P) Pages in category "Herbicides"
Pre-emergent herbicides are applied to the soil and prevent germination or early growth of weed seeds. In agriculture large scale and systematic procedures are usually required, often by machines, such as large liquid herbicide 'floater' sprayers, or aerial application .
Dinitramine is a preëmergent dinitroaniline herbicide incorporated into soil to control weeds for months after. [2] [3] It is no longer approved in the U.S.A., and is not in the European Union, [4] though in Iran it has been used to control annual grasses and broadleaf weeds in cotton and soybeans, [5] as it was in the U.S. as of 1975, [6] where it was also used on sunflower.
One major complication to the use of herbicides for weed control is the ability of plants to evolve herbicide resistance, rendering the herbicides ineffective against target plants. Out of 31 known herbicide modes of action, weeds have evolved resistance to 21. 268 plant species are known to have evolved herbicide resistance at least once. [ 59 ]
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.
This is a list of herbicides. These are chemical compounds which have been registered as herbicides . The names on the list are the ISO common name for the active ingredient which is formulated into the branded product sold to end-users. [ 1 ]