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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.
One major complication to the use of herbicides for weed control is the ability of plants to evolve herbicide resistance, rendering the herbicides ineffective against target plants. 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 ]
Desiccation can improve the uniformity of a crop. It may correct for uneven crop growth which is a problem in northern climates, during wet summers, or when weed control is poor. Plants that have naturally reached the end of their maturation may be mingled with plants in earlier stages of growth; controlled desiccation evens that out.
Sodium chlorate was an extensively used weed killer within the EU, until 2009 when it was withdrawn after a decision made under terms of EU Regulations. Its use as a herbicide outside the EU remains unaffected, as does its use in other non-herbicidal applications, such as in the production of chlorine dioxide biocides and for pulp and paper ...
It is selective for plants with broad leaves, and this includes most deciduous trees. Clovers are tolerant at moderate application levels. It is currently classified as a restricted use pesticide in the United States : its use is mapped by the US Geological Survey , whose data show consistent use from 1992, with a small recent decline in the ...
Once you use bleach on any type of wood, it’s near impossible to remove. “The porous nature of wood will only absorb the bleach, and you can’t safely remove it or rinse it," says Mehas. "Not ...
Using bleach could harm the pipes, too, creating more problems in your home than relief. "I would not recommend using bleach to clean drains," says Julie Edelman , author of The Accidental ...
2,4-Dichlorophenoxyacetic acid is an organic compound with the chemical formula Cl 2 C 6 H 3 OCH 2 CO 2 H.It is usually referred to by its ISO common name 2,4-D. [4] It is a systemic herbicide that kills most broadleaf weeds by causing uncontrolled growth, but most grasses such as cereals, lawn turf, and grassland are relatively unaffected.