The Rural Voice, 1989-02, Page 23whenever they have a spare half day.
It's better to spread it every six
months or so, so neighbours know
they're in for only a few rough days.
He also suggests that farmers avoid
spreading manure just before a long
weekend when the number of sensitive
noses in an area could increase.
It appears that pollution from
animal manure in Ontario is not a big
problem. The farms here are reason-
ably well dispersed, spreading (so to
speak) the manure over a large enough
land area. Farmers are generally com-
petent and conscientious, following
recommended application rates and
times as well as maintaining their
storage and application equipment.
It is also apparent however, that the
pollution potential of manure is consi-
derable. Modern liquid manure is not
the benign solid waste of the past, it is
a concentrated, potentially toxic waste
product that requires careful handling.
We can look to Europe as an example
of how far things can go: in some
places fields are saturated with manure
and there is talk of banning animal
production from some river systems.
While it is unlikely that we will
find ourselves in a similar situation
here in Canada, farmers must be aware
of the hazards of manure disposal and
take precautions:
• do not spread manure in the
winter, especially if the field is near
open water;
• consider the nitrogen contained in
the manure before applying chemical
fertilizer,
• follow the recommended applica-
tion rates (12 to 13 tonnes/hectare for
solid, 5 to 12 cu. metres/hectare for
liquid — rates vary with the type of
manure and soil, so consult OMAF for
advice);
• ensure that facilities are adequate
and properly maintained at all times.
If these precautions are taken,
manure will remain what it always has
been: a much maligned but valuable
source of nutrients for growing crops.0
* New Scientist, 24 July 1986
* New Scientist, 8 October 1988
* "Water Pollution from Farm
Waste: 1985 Survey," Water Author-
ities Association, Britain
* "Runoff Characteristics from
Feedlots and Manure Storage Areas in
Southwestern Ontario."
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