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2007-03-01 23:11:45 · 11 answers · asked by jing 1 in Environment

11 answers

A liquid or spray that kills insects. Often used by farmers to protect there crops from aphids and caterpillars and the like.

2007-03-01 23:15:53 · answer #1 · answered by Anonymous · 0 0

An Insecticide is a pesticide whose purpose is to kill or to prevent the multiplication of insects.
Some insecticides have been banned due to their adverse effects on animals or humans.
DDT is an example of a heavily used and misused pesticide. One of the better known impacts of DDT is to reduce the thickness of the egg shells on predatory birds. The shells sometimes become too thin to be viable, causing reductions in bird populations. This occurs with DDT and a number of related compounds due to the process of bioaccumulation, wherein the chemical, due to its stability and fat solubility, accumulates to progressively higher concentrations in the body fat of animals farther up the food chain. The near-worldwide ban on DDT and related chemicals has allowed some of these birds--such as the peregrine falcon--to recover in recent years.
Misuse of insecticides is a major factor in pollinator decline.
Individual insecticides:
·Chlorinated, several now banned because of their ecological persistence:
oAldrin
oChlordane
oDieldrin
oDDT
oLindane
·Organophosphorus (chemically similar to Nerve agents)
oDiazinon
oMalathion
·Plant toxin derived:
oDerris (rotenone)
oPyrethrum
·Others:
oCypermethrin
·Branded products:
oBlack Flag (insecticide)

2007-03-06 06:23:22 · answer #2 · answered by arka_spacerocker 2 · 0 0

Well a true insecticide would kill insects, or a particular kind of insect without harming other life. But most insecticides are just more poisonous to what they are made for and less poisonous to other life.

2007-03-02 07:19:05 · answer #3 · answered by Derek Stoike 1 · 0 1

An insecticide is a pesticide used against insects in all developmental forms.

2007-03-02 07:15:12 · answer #4 · answered by Topgear is my life! TG 2 · 1 0

they are very strong chemicals, that are very dangerous and can polute drinking water in underground reservoirs if enough is sprayed on the crops to combat pests that are attacking the crops

there are other organic or natural methods wich are not harmfull to either nature or man.
also with deforestation the top soils often are washed into the rivers and if these contain pesticides ,it can also contaminate river waters and kill fish ,or Humans

Agro chemicals that get into the waters change the PH of the water and this effects sexual devellopment in the fetusses of mothers who drink the water

herbicides which kill weeds are just as bad
and both Herbiides and pesticides should not be used

.Many countries already forbid many of the more dangerous ones
and the consumer market is growing towards buying produce that have not used them in the growing process

2007-03-02 15:39:40 · answer #5 · answered by Anonymous · 0 0

It literally means killing an insect. It's used as a term for chemicals used on plants (usually) to kill insects that can harm the plant.

2007-03-02 07:16:16 · answer #6 · answered by Anonymous · 1 0

a chemical or fertilizer used to kill the insects is called as a insecticide
it is diluted with water and sprayed in the form of spray

2007-03-02 07:45:25 · answer #7 · answered by varun hi 1 · 0 0

Any toxic substance that is used to kill insects. Such substances are used primarily to control pests that infect cultivated plants or to eliminate disease-carrying insects in specific areas.

2007-03-02 07:19:14 · answer #8 · answered by Anonymous · 0 0

something example spray to get rid of insects

2007-03-02 07:15:46 · answer #9 · answered by Answerer 4 · 0 0

its a chemical used to control or kill insects.

2007-03-02 07:15:47 · answer #10 · answered by askmike 5 · 0 0

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