Sunday, 22 May 2011

Organic Farming Pest Control

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organic farming pest control
Do all pesticides cause problems? are they all non-biodegradable? PLEASE HELP!?

please help!

and please write ur source too thanks

x
also if you can answer this too:
how are pests controlled without pesticide use for organic farming??

report help!
pleasee help
thanks in advance
xxx

and sources too please and in detail if u can
xxx


All pesticides have some degree of impact on non-target species.

Classes of pesticide that may be praised for having no impact on vertebrates, like insect growth regulators or Bacillis Thurengiensis are hazardous toward other invertebrates and can wreak havok if they drain to a watershed where they can destroy the invertebrates that fish and other creatures immune to the pesticide feed on.

Be careful what you read. I recently read an article saying that a new pest species in the US (introduced from Australia) was not a problem, because insect growth regulators could destroy them. The author omitted the potential effect on fish and other creature who would starve as all invertebrates in the spray area would be affected.

Pesticides have varying degrees of environmental stability (biodegradability). Most current pesticides become too degraded for protection from pest insects within several months of application around the baseboards, or about 5 years of sub-slab application for termite treatment.

Other pesticides, like Organophosphates, can take decades to totally degrade. DDT was banned years ago, but is still being found even in Human breast milk (in parts per million levels, if I recall correctly) from traveling up the food chain (chickens eat the poisoned bugs, we eat the chickens. Next year, the crop picks up traces of DDT from the ground and the cycle repeats).

Organic farming uses destruction of habitat, like the cut stalks of last years crop (to keep pests from lasting through the winter), the use of "nonpoisonous" chemicals to kill pests (soap can kill insects by making them vulnerable to drowning if they get wet) and by the use of biocontrol agents such as wasps who only feed on the pest insects. This is planned in a manner to maximize effect on the pest's life cycle (like during their mating or egg laying season) and minimize effect on their predators.

My source is a Master's Degree in Entomology. I do not recall the references, but have given you keywords that you can use in a search engine.


Good Bugs / Bad Bugs - Organic Farming & Pest Control









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