Pesticides and Their Management in
Canada
The Pest Control Products Act (PCPA)
Pesticides in Canada are registered under the federal Pest
Control Products Act (PCPA). The current act was passed in
1969 and has not been significantly amended since that time.
It is completely outdated and inadequate for protecting health
and the environment and reducing society's reliance on toxic
chemicals.
The Pest Management Regulatory Agency (PMRA), a branch of
Health Canada, is responsible for administering the PCPA.
Overall, pesticides are the responsibility of the Minister of
Health.
Pesticides In Canada
There are approximately 6,000 pesticide products registered
for use in Canada. WWF has calculated that at least 50 million
kilograms of herbicides, insecticides, and fungicides are used
in Canada each year at a reported value of one billion dollars
a year. They are used in agriculture, for lawn care, in fish
farming, in homes, in day-cares, on golf courses, on pets, and
even on children to combat head lice. They are also used
widely in industry.
Many pesticides are used for cosmetic purposes. These
include pesticides used on lawns and in agriculture to prevent
blemishes and other cosmetic imperfections that have no
connection with health or taste.
The Problem With Pesticides
Pesticides are designed to kill. They are released
deliberately into the environment and onto food. Only about 1%
of a pesticide actually reaches its target. The rest is
released into the environment, exposing innocent people and
wildlife.
Numerous studies, and common-sense, indicate that many of
the pesticides registered for use in this country can have
harmful effects on living things other than those they are
designed to kill.
Some are persistent (meaning they don't break down) and
bio-accumulative (meaning they collect in the fatty tissues of
living organisms). Many are considered hormone disruptors
(meaning they disrupt hormone function in humans and other
mammals) which can undermine reproductive, immune and
behavioural fitness, especially affecting the next generation.
Other pesticides are acutely toxic (meaning they can cause
death upon exposure).
There is no way to avoid widespread contamination from
pesticides. The older, persistent pesticides can travel great
distances on air currents and are found in every part of the
planet, including in mothers' milk around the world. Soluble
pesticides can end up in groundwater. The average person is
most exposed to pesticides via their food, but farmers and
their families have higher occupational exposures. Wildlife
are often acutely exposed via their food and in their
habitats.
Some populations are especially vulnerable to the effects
of toxic pesticides. Arctic people and wildlife are
super-exposed to persistent pesticides due to their geography
and animal-based diet. Many Inuit children suffer rates of
chronic infections 10-15 times higher than children in the
south and vaccinations often fail because the child's immune
system is so suppressed that the necessary antibodies are not
produced.
Children are both more exposed and more vulnerable to
pesticides. From conception to sexual maturity, their bodies,
sex organs, brains, immune and nervous systems are developing
and are sensitive to disruption. Exposure to pesticides before
birth can cause serious and irreversible damage. Because they
eat more per unit of body weight, and roll around on lawns,
dig in the earth, crawl on floors and carpets - all of which
may have pesticide residues - they are more exposed than
adults.
Birds, friendly bugs such as ladybugs and bees, and other
wildlife are often inadvertently killed or seriously harmed by
pesticides applied to crops.
Alternatives To Pesticides
There are many effective alternatives to pesticides.
Organic farming methods and Integrated Pest Management (IPM)
rely on techniques such as crop rotation, pest prevention,
companion planting, and soil development.
In fact, many pesticides are losing their effectiveness as
the bugs and plants they are designed to eradicate develop
resistance. (Already 504 insect and mite species, 150 plant
diseases, and 188 weed species have developed resistance.)
Farmers still lose about 20 per cent of their crops to weeds
and insects, the same proportion as they lost in 1930.