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Monsanto developed and patented the use of glyphosate to kill weeds in the early 1970s and first brought it to market in 1974 under the Roundup brandname. [ 27 ] [ 28 ] While its initial patent [ 29 ] expired in 1991, Monsanto retained exclusive rights in the United States until its patent [ 30 ] on the isopropylamine salt expired in September ...
Dicamba is a selective and systemic herbicide that kills annual and perennial broadleaf weeds. [10] Its primary commercial applications are weed control for grain crops and turf areas. It is also used to control brush and bracken in pastures, as well as controlling legumes and cacti.
This salt is one of the most widely used herbicides worldwide. [6] 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.
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Chemical weed controls can lose their effectiveness in killing weeds, too, so instead of finding a solution to having fewer weeds, more problems to tackle could be created.
MCPA is used as an herbicide, generally as its salt or esterified forms. Used thus, it controls broadleaf weeds, including thistle and dock, in cereal crops and pasture. It is selective for plants with broad leaves, and this includes most deciduous trees. Clovers are tolerant at moderate application levels.