Soil moisture
conditions remain good to
excellent for crop development
throughout Manitoba except for
the southwest area of the province.
Moisture conditions are variable
throughout Saskatchewan. Rainfall
occurred throughout much of
the province with accumulations
ranging from 1/10" to 3".
However, the southwest and the
drier pockets of the southeast
and northwest areas of the province
reported the lowest amounts
of rainfall. Moisture conditions
in Alberta remain good to excellent.
However, the southern part of
the province and an area west
of Spirit River in the Peace
River Region has become dry
and in need of moisture soon.
For current PFRA maps of moisture
conditions, check these Web
pages:
http://www.agr.gc.ca/pfra/drought/drprec4_e.htm
http://www.agr.gc.ca/pfra/drought/drprecw_e.htm
http://www.agr.gc.ca/pfra/drought/prgrowing_e.htm
Additional
moisture information for Alberta
is available from Alberta Environment
at:
http://www3.gov.ab.ca/env/water/WS/data/precipmaps/weekly.pdf
The latest
crop report from Saskatchewan
Agriculture, Food & Rural
Revitalization is available
at:
http://www.agr.gov.sk.ca/docs/reports/crop_report/crprpt030622.asp?
firstPick=Reports&secondPick=Crop%20Report
Hail Damage has been reported in many areas of western Canada again this week. Potential yields losses will depend on stage of crop and the severity of the damage. Hail damage allows a point of entry for diseases such as sclerotinia stem rot, alternaria black spot and blackleg to infect canola plants. Further information is available in the Canola Growers Manual, Chapter 5, pages 511 and 512.
Insects
identified in the past week
include diamondback moth, flea
beetles, red turnip beetle,
grasshoppers, beet webworm,
alfalfa looper, lygus bugs,
and bertha armyworms. There
is potential for some of these
insects (diamondback moth, lygus
bugs and beet webworm) to reach
economic thresholds in the next
few weeks. It is very important
to keep scouting for these insects
as the crop finishes flowering
and starts podding. It is at
the early podding stage that
the crop is most vulnerable
to economic losses from these
insects. It is also important
to use proper techniques when
scouting for various insects.
Use a sweep net to determine
thresholds for lygus bugs and
cabbage seedpod weevil. A sweep
net cannot be used for determining
thresholds for diamondback moth,
bertha armyworm, beet webworm
or alfalfa looper larvae. An
estimation of the number of
these larvae within a square
meter is a more accurate determination
of thresholds for these insects.
Watch for more detailed information
on action thresholds for these
insects in upcoming crop reports.
Click on the following links
to previous Canola Crop Watch
Reports to find out more information
about some of the insects mentioned
above:
For more information and images
of the moth and larvae, visit
these Web pages:
http://vc55moths.topcities.com/imagearchive/pyralid/loxostegesticticalis.htm
http://www.canola-council.org/images_insects.html
Red turnip
beetle and alfalfa looper:
http://www.canola-council.org/seed/canola-watch/watch-jun18.shtml
Lygus bugs,
diamond back moth and sweep
net scouting:
http://www.canola-council.org/seed/canola-watch/watch-jun25.shtml
http://www.canola-council.org/PDF/sweepcard_04.pdf
http://www.canola.ab.ca/acpc/lygus.shtml
Spraying for sclerotinia has been reported in various areas of western Canada. It has been completed on many acres in eastern Manitoba and in the wetter regions of Saskatchewan and Alberta. The risk of sclerotinia infection on some of the later seeded fields may have been reduced in areas where conditions have become drier. Weather is one of the most important factors in the development of sclerotinia infection. As the warmer and drier part of the summer approaches, the likelihood of sclerotinia infection that warrants spraying decreases.
For the most
recent sclerotinia risk forecast
map, click on the following
link:
http://www.aceweather.ca/canola.cfm
Alternaria may develop in areas with heavy plant stands and wet conditions. The disease cycle can continue throughout the season intensify at flowering when these heavy crop canopies promote humid conditions. A foliar fungicide can be applied at the 95% bloom stage to increase yield of infected stands.
Direct overall questions regarding this report to David Blais, Agronomist, Western Saskatchewan with the Canola Council of Canada at blaisd@canola-council.org : ph/fax 306-895-2122.
For specific questions regarding regional issues associated with this report, please consult one of the following Canola Council of Canada regional agronomists or provincial oilseed specialists:
Derwyn Hammond, Agronomist, Manitoba,
hammondd@canola-council.org,
204-729-9011
Rob Park, Manitoba Agriculture
& Food, rpark@gov.mb.ca,
204-745-5665
David Blais, Agronomist, Western
Saskatchewan, blaisd@canola-council.org,
306-895-2122
Jim Bessel, Senior Agronomist,
Northeastern Saskatchewan, besselj@canola-council.org,
306-373-6771
Bill Greuel, Saskatchewan Agriculture,
Food & Rural Revitalization,
wgreuel@agr.gov.sk.ca,
306-787-2756
Doug Moisey, Agronomist, Central
& Southern Alberta, moiseyd@canola-council.org,
403-553-2829
Christine Mardell, Agronomist,
Peace River Region, mardellc@canola-council.org,
780-518-1513
Murray Hartman, Alberta Agriculture,
Food & Rural Development,
murray.hartman@gov.ab.ca,
403-782-8024
Kerry Clark, BC Ministry of Agriculture,
Food & Fisheries, Kerry.Clark@gems9.gov.bc.ca,
250-787-3213
John Mayko, Agronomic Research
and Extension Manager, maykoj@canola-council.org,
ph/fax:780-764-2593.
The Canola Crop Watch Report provides just-in-time information on canola production to growers and industry. Contributors to the Canola Agronomy Network are:
Manitoba Agriculture & Food, Manitoba Canola Growers Association, Agricore United, Cargill, James Richardson International, Saskatchewan Wheat Pool, United Farmers of Alberta, Saskatchewan Agriculture, Food & Rural Revitalization, Saskatchewan Canola Growers Association, Saskatchewan Canola Development Commission, Alberta Agriculture, Food & Rural Development, Alberta Canola Producers Commission, BC Ministry of Agriculture, Food & Fisheries, and the Canola Council of Canada.