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The Herbicide Resistance Action Committee (HRAC) classifies herbicides by their mode of action (MoA) to provide a uniform way for farmers and growers to identify the agents they use and better manage pesticide resistance around the world. [1] [2] It is run by CropLife International [3] in conjunction with the Weed Science Society of America ...
The industry-sponsored Herbicide Resistance Action Committee (HRAC) advises on the use of herbicides in crop protection and classifies the available compounds according to their chemical structures and mechanism of action so as to manage the risks of pesticide resistance developing. [4]
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] Herbicide resistance was first observed in 1957, and since has evolved repeatedly in weed species from 30 families across the globe. [ 60 ]
This curiosity led to the discovery and development of the triketone class of herbicides. [19] Investigation of the mode of action of this class of compounds led to the discovery that it could be used to treat patients with tyrosinaemia type 1, a treatment which has been said to "transform the natural history of tyrosinaemia". [20]
Chlorsulfuron is an ALS (acetolactate synthase) inhibitor herbicide, and is a sulfonylurea compound. [ 3 ] [ 4 ] It was discovered by George Levitt in February 1976 while working at DuPont , which was the patent assignee .
MCPA (2-methyl-4-chlorophenoxyacetic acid) is a widely used phenoxy herbicide introduced in 1945. It selectively controls broad-leaf weeds in pasture and cereal crops. The mode of action of MCPA is as an auxin, which are growth hormones that naturally exist in plants. [2] [3]
In the United States as of 2014, atrazine was the second-most widely used herbicide after glyphosate, [16] with 76 million pounds (34 thousand metric tons) of it applied each year, [19] [20] nearly identical to its usage in 1974, of 76.8 million pounds. [21] Atrazine continues to be one of the most widely used herbicides in Australian ...
Oxyfluorfen is a chemical compound used as an herbicide. It is manufactured by Dow AgroSciences, Adama Agricultural Solutions and 4Farmers under the trade names Goal, Galigan, and Oxyfluorfen 240. [2] [3] Oxyfluorfen is used to control broadleaf and grassy weeds in a variety of nut, tree fruit, vine, and field crops, especially wine grapes and ...