Herbicide
From The Art and Popular Culture Encyclopedia
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| + | '''Herbicides''', also commonly known as '''weedkillers''', are [[pesticide]]s used to kill unwanted [[plant]]s. Selective herbicides kill specific targets, while leaving the desired [[crop]] relatively unharmed. Some of these act by interfering with the growth of the [[weed]] and are often synthetic mimics of natural [[plant hormone]]s. Herbicides used to clear waste ground, industrial sites, railways and railway embankments are not selective and kill all [[plant]] material with which they come into contact. Smaller quantities are used in forestry, pasture systems, and management of areas set aside as wildlife [[habitat]]. | ||
| - | '''Arsenic''' is a [[chemical element]] with the symbol '''As''' and [[atomic number]] 33. Arsenic was first documented by [[Albertus Magnus]] in 1250. | + | Some plants produce natural herbicides, such as the genus ''[[Juglans]]'' ([[walnut]]s), or the [[tree of heaven]]; such action of natural herbicides, and other related chemical interactions, is called [[allelopathy]]. |
| - | Arsenic and its compounds, especially the trioxide, are used in the production of [[pesticide]]s (treated wood products), [[herbicide]]s, and [[insecticide]]s. These applications are declining, however. | + | Herbicides are widely used in [[agriculture]] and landscape turf management. In the US, they account for about 70% of all agricultural pesticide use. |
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| - | Arsenic is notoriously poisonous to multicellular life, although a few species of bacteria are able to use arsenic compounds as respiratory metabolites. [[Arsenic contamination of groundwater]] is a problem that affects millions of people across the world. | + | |
| ==See also== | ==See also== | ||
| - | * [[Aqua Tofana]] | + | * [[Integrated pest management]] |
| - | * [[Arsenic poisoning]] | + | * [[Index of pesticide articles]] |
| - | * [[Fowler's solution]] | + | * [[Weed control]] |
| - | * [[Grainger challenge]] | + | * [[Bioherbicide]] |
| - | * [[White arsenic]] | + | * [[List of environmental health hazards]] |
| - | * [[Arsenic trioxide]] | + | * [[Rainbow herbicides]] |
| + | * [[Soil contamination]] | ||
| + | * [[Surface runoff]] | ||
| + | * [[Weed]] | ||
| {{GFDL}} | {{GFDL}} | ||
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Herbicides, also commonly known as weedkillers, are pesticides used to kill unwanted plants. Selective herbicides kill specific targets, while leaving the desired crop relatively unharmed. Some of these act by interfering with the growth of the weed and are often synthetic mimics of natural plant hormones. Herbicides used to clear waste ground, industrial sites, railways and railway embankments are not selective and kill all plant material with which they come into contact. Smaller quantities are used in forestry, pasture systems, and management of areas set aside as wildlife habitat.
Some plants produce natural herbicides, such as the genus Juglans (walnuts), or the tree of heaven; such action of natural herbicides, and other related chemical interactions, is called allelopathy.
Herbicides are widely used in agriculture and landscape turf management. In the US, they account for about 70% of all agricultural pesticide use.
See also
- Integrated pest management
- Index of pesticide articles
- Weed control
- Bioherbicide
- List of environmental health hazards
- Rainbow herbicides
- Soil contamination
- Surface runoff
- Weed
