Insecticides
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Insecticides. Chemicals that are used to kill that are pests. 1st Generation. mixtures containing. - lethal to both bugs AND humans. e.g.. tropical legume. tobacco. African chrysanthemum. Plants are a “natural” place to look for insecticides because they. spines.

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Insecticides

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Insecticides

Insecticides

Chemicals that are used

to kill that are pests.

1st Generation

  • mixtures containing

- lethal to both bugs AND humans


Insecticides

e.g.

tropical legume

tobacco

African

chrysanthemum


Insecticides

Plants are a “natural” place to look for insecticides because they

spines

thorns

poisons

sensitive plant


Insecticides

Natural does NOT always mean


Insecticides

2nd Generation


Insecticides

Characteristics of DDT:

  • broad – spectrum:

  • persistent:


Insecticides

DDT changed world history by:

  • preventing a

    among the Allied soldiers

    invading Italy during WWII


Insecticides

  • preventing millions from dying because of


Insecticides

  • increasing

    worldwide


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won the Prize in Chemistry

for the synthesis of DDT.


Insecticides

What Went Wrong?


Insecticides

DDT was banned in Canada in & in the U.S.in 1972, but it is

still being used in some countries (e.g.- ).


Insecticides

To cope with these problems, which it had itself created, the

World Health Organization was obliged to parachute into Borneo.


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Characteristics of Modern Insecticides

Therefore, they CAN’T

cause bioaccumulation.


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Problems with Pesticides

  • Because most pesticides are broad-spectrum, they kill

    , not just pests.


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  • If an insecticide is overused, can develop.


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Doctors are usually cautious about prescribing

for the same reason. (i.e.- Some disease-causing bacteria have become resistant to all known .)


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  • Some pesticides have been linked to certain types of .

2,4 - D has been linked

to

Saku Koivu


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  • Many synthetic chemicals, including pesticides, mimic

    the action of the female sex hormone & may be

    causing in adolescents.

Bisphenol A


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The province of Ontario banned the use of

(pesticides that non-essential or used to improve the appearance

of lawns, gardens, & trees) in .


Insecticides

There are exceptions for agriculture, forestry, the promotion of

public health or safety (e.g.- to control plants that are poisonous

to the touch, such as ; insects that bite, sting, are venomous or are disease carrying, like mosquitoes; and animals, insects or plants that may cause damage to a structure or infrastructure, such as ), and .


Insecticides

The is one of North America's most devastating forest pests.

Both Toronto & Mississsauga have carried out

to control this pest.


Insecticides

Technically, the law says

you can use

or for poison

ivy, but NOT for

cosmetic purposes.


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What are Some of the Alternatives to Cosmetic Pesticides?


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wildflowers

shrubs

trees


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Go Native!

Native plants are adapted to the conditions here. They are &

than introduced species. Put away those pesticide & fertilizer bottles & turn off the sprinkler!


Insecticides

Organic Food

Food produced without: antibiotics;

growth hormones; most conventional ;

petroleum- based or sewage sludge-based

; bioengineering; or ionizing radiation.


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