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Herbicides (US: / ˈ ɜːr b ɪ s aɪ d z /, UK: / ˈ h ɜːr-/), also commonly known as weed killers, are substances used to control undesired plants, also known as weeds. [1] Selective herbicides control specific weed species while leaving the desired crop relatively unharmed, while non-selective herbicides (sometimes called "total weed ...
Weed control is a type of pest control, which attempts to stop or reduce growth of weeds, especially noxious weeds, with the aim of reducing their competition with desired flora and fauna including domesticated plants and livestock, and in natural settings preventing non native species competing with native species.
Often called field burning, this technique is used to clear the land of any existing crop residue as well as kill weeds and weed seeds. Field burning is less expensive than most other methods such as herbicides or tillage, but because it produces smoke and other fire-related pollutants, its use is not popular in agricultural areas bounded by ...
When applied, imazaquin halts weed growth which eventually kills the weed or causes the weed to die due to its incapability to compete with surrounding vegetation. Imazaquin may be applied pre-plant incorporated, pre-plant surface, pre-emergence, or early post-emergence.
It is quick-acting and non-selective, killing green plant tissue on contact. Paraquat is toxic (lethal) to human beings and animals. Paraquat's poisoning and lethality depends on the dose and how the herbicide is absorbed by the body. In humans, paraquat damages the mouth, stomach, and intestines if it is ingested. [7]
Fluazifop and other similar herbicides act by inhibiting plant acetyl-CoA carboxylase (ACCase). [ 14 ] [ 15 ] [ 6 ] Their selectivity for grasses arises because they target the plastid isoform of the enzyme present only in these species, making them ineffective on broad-leaved weeds and other organisms including mammals. [ 16 ]
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