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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.
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 ...
The term organic herbicide has come to mean herbicides intended for organic farming. Few natural herbicides rival the effectiveness of synthetics. [ 82 ] Some plants also produce their own herbicides, such as the genus Juglans ( walnuts ), or the tree of heaven ; such actions of natural herbicides, and other related chemical interactions, is ...
In 1990 sulcotrione was introduced for post- emergence weed control in corn. Isoxaflutole opened the market more broadly for HPPD inhibitors when it was introduced in 1996 for corn and sugarcane, and for use as a pre-emergence herbicide that could control broadleaf weeds as did sulcotrione, but also additional grass weeds.
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.
Metribuzin (4-amino-6-tert-butyl-3- (methylthio)-1,2,4-triazin-5 (4H)-one) is a herbicide used both pre- and post-emergence in crops including soy bean, potatoes, tomatoes and sugar cane. It acts by inhibiting photosynthesis by disrupting photosystem II. [2] It is widely used in agriculture and has been found to contaminate groundwater.
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 ...
The triketone herbicides were found to be effective on a wide range of commercially-important weed species and to have both pre- and post-emergence activity. [9] Mesotrione was chosen for development (by Zeneca Agrochemicals under the code number ZA1296) because it controls a wide range of broad-leaved weeds that compete with maize and can also suppress some annual grass weeds that may be ...