The Rural Voice, 2001-07, Page 42Canada tleabane was one of the
new weeds added to herbicide ratings
tables in the Guide to Weed Control
(Pub. 75) last fall and these ratings
will be enhanced as new data is
found. Over the past 10 years Ontario
no -till soybean growers have found
that glyphosate as a burndown
herbicide is required in almost all
situations and that it almost always
gives excellent control of Canada
tleabane if sprayed when they are
small. Later applications such as was
common in 2000 sometimes require
higher rates. Roundup is also used a
second time in Roundup Ready fields
and sometimes for pre -harvest
glyphosate applications. This high
frequency use pattern would be the
most likely scenario to find fleabane
escapes that are resistant to
glyphosate in Ontario. So far we have
not found it but it could be just a
matter of time.
We should be vigilant to look for
scattered plants that are unusual or
unexplained escapes and to remove
them before they go to seed. In corn
we have a number of options to
control fleabane including Converge,
Fieldstar, Banvel and Marksman.°
Handling mortalities
on your farm
Article taken from Pork News &
Views, June 2001
Every livestock producer is
responsible for disposing of all
livestock mortalities in an
environmentally safe and timely
manner. Ontario Dead Animal
Disposal Act (ODADA), in Ontario,
all dead cattle, swine, sheep, goats,
and horses must be disposed of
within 48 hours after death in one of
three approved methods:
1. Contacting a provincially licensed
collector for pickup.
2. Composting under 60 cm (2 feet)
of organic substrate, such as straw or
sawdust.
3. Burying under 60 cm (2 feet) of
soil and away from all waterways.
The ODADA does not require a
licensed collector to pick up
mortalities. Producers are responsible
for using. the composting or burial
methods of disposal if collection
38 THE RURAL VOICE
Advice
services are unavailable.
Producer Transported Mortalities —
Since the spring of 2000, farmers
residing east of Hwy 400 can
transport their livestock mortalities to
provincially licensed collectors by
following these guidelines:
• Mortalities must be covered and
transported in a leak proof vehicle.
• Farmers may only transport their
own mortalities.
• Mortalities must be identified with
the owner's name, address and phone
number.
• Farmers are limited to the number
and type of species they may
transport to the collection service for
each trip.
Penalties
Every person who contravenes the
ODADA or the regulations is guilty
of an offense. On conviction, of a
first offence, the offender is liable to
a fine of not more than $2000. For a
subsequent offence, the offender is
liable to a fine of not more than
$5000 or to imprisonment of not
more than six months.
Best Management Practices Do's
• Call a collection service once a
mortality has been detected.
• Develop a protocol with your
collector for pick up, storage, and
bio -security.
• If composting, select a site and
construct an appropriate container to
prevent leaching or wildlife and pet
contact.
• Designate burial sites in low
environmental risk areas away from
waterways.
• Learn more about provincial
regulations and guidelines regarding
disposal.
• Consult your veterinarian if unusual
or out of the ordinary mortalities
occur.
Don'ts
• Never allow pets, livestock, vermin
or scavengers to consume mortalities.
• Never dispose of livestock
mortalities in solid or liquid manure
systems. This is not an appropriate
composting system.
• Never place mortalities for pick up
in public view or along roadways.
• Never bury animals close to
waterways, wells or where water
collects.
• Burning or incinerating mortalities
is illegal under the ODADA.
• Producer transport of mortalities is
illegal except in defined designated
areas.
This information and a list of
collectors are available from the
Information Sheet "Managing On
Farm Mortalities." It is available
from the Agricultural Information
Contact Centre at 1-877-424-1300 or
your local Resource Centre.°
Resitant ragweed
is here
By Hugh Martin, Weed
Management Specialist, OMAFRA
Last fall we had reports of
common ragweed surviving
applications of ALS inhibiting
(Group 2) herbicides. Seeds have
been collected from these locations
and tested at the Department of Plant
Agriculture of the University of
Guelph. They were sprayed post
emergence with Pursuit, First Rate
and Classic.
We are now in a position to
confirm 'that some of these
populations are resistant to members
of the Group 2 herbicides. The field
histories of these sites are similar to
other fields with Group 2 resistant
weeds. Most of these locations have
grown a lot of soybeans and have
used Group 2 herbicides frequently in
the rotation. Further testing will be
conducted to get more information
on the level of resistance in these
populations and to determine whether
there are any differences in their
cross-resistance pattern.
Herbicide resistance is moving to
a county, township and farm near
you. We now have four weed species
in Ontario with confirmed locations
of resistance to Group 2 herbicides:
redroot pigweed, green pigweed,
Eastern -black nightshade and
common ragweed. So far we have
found that plants that have acquired
resistance to these herbicides usually
will show very little symptoms
especially when sprayed at the
labeled rates for the herbicide. We
have however observed with the
common ragweed that some plants
that were initially injured could re-