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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] Preemergent herbicides are applied to lawns in the ...
Halosulfuron-methyl is a sulfonylurea post-emergence herbicide used to control some annual and perennial broad-leaved weeds and sedges (such as nutsedge/nutgrass) in a range of crops (particularly rice), established landscape woody ornamentals and turfgrass. It is marketed under several tradenames including Sedgehammer[2] and Sandea.
Glyphosate is an aminophosphonic analogue of the natural amino acid glycine and, like all amino acids, exists in different ionic states depending on pH. Both the phosphonic acid and carboxylic acid moieties can be ionised and the amine group can be protonated and the substance exists as a series of zwitterions.
Pendimethalin is an herbicide of the dinitroaniline class [2] used premergently and postemergently to control annual grasses and certain broadleaf weeds. It inhibits cell division and cell elongation. Pendimethalin is a K1-group (in Australia group D, or numerically group 3) according to the Herbicide Resistance Action Committee (HRAC ...
Roundup 2. Roundup is a brand name of herbicide originally produced by Monsanto, which Bayer acquired in 2018. Prior to the late-2010s formulations, it used broad-spectrum glyphosate-based herbicides. [2] As of 2009, sales of Roundup herbicides still represented about 10 percent of Monsanto's revenue despite competition from Chinese producers ...
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. Trifluralin is also used in Australia. [5]
Post-emergent herbicides include active ingredients such as: Quinclorac. Fenoxaprop-p-ethyl. If left intact, crabgrass plants will get huge, with up to 11 to 12 tillers by midsummer. These mature ...
Mesotrione is a systemic pre- and post-emergence herbicide for the selective contact and residual control of broadleaf weeds in field corn, seed corn, yellow popcorn and sweet corn. [14] Mesotrione possesses a broad spectrum of activity on commercially important broadleaf weeds including Abutilon theophrasti, Amaranthus powellii, Amaranthus ...