of herbicides (lat.: herba = herb, grass) or herbicides are substances, with whose employment in the agriculture selectively (selective herbicides) or not selectively (total herbicide) economically uninteresting Begleitkräuter is to be killed, without damaging the useful plants thereby.
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organization of the herbicides
a possible organization takes place according to the kind of the effect:
- corrosive herbicides
- Growth hormones
- Total herbicides
- affect all plants and kill them. The most well-known total herbicides are under the trade name the RoundUp refugee Glyphosat and the no more in the trade available UnkrautEx on basis of sodium chlorate. For some years with genetic methods also plants are bred, which are resistant to total herbicides. These so-called. The “Green genetic engineering “e.g. is. for the total herbicidesRoundUp and Basta (active substance:Glufosinat) carried out.
Organization of the herbicides to points of attack in the metabolism of the plants:
- Mitosehemmer or Keimhemmer
- restrain the cell division
- of stature material herbicides
- lead to the fact that the plants grow themselves “to death”
- amino acid antagonists
- restrain the education of important amino acids (example: Glufosinat)
by the repeated employment of only one group of effects over several years can be particularly selected in Monokulturen resistant weeds out. This procedure was observed at nearly all groups of effects. Thereby plants become particularly frequent alsoa high reproduction rate resistant. A current example represents the field fox tail in Germany. Side of the Herbicide Resistance Action Committee
of herbicides as agents
of herbicides can be used and already frequently as military agents.
see: Herbicides as agents
- Thomas Seitz, Michael G. Hoffmann, Hansjörg Krähmer: Herbicides for the agriculture: Chemical weed control. Chemistry in our time 37 (2), S. 112 - 126 (2003), ISSN of 0009-2851