NEW! Field Guide to Support Integrated Pest Management (IPM) in Field and Forage Crops – NOW available for download

Jennifer Otani
Week 5

Field Crop and Forage Pests and their Natural Enemies in Western Canada: IDENTIFICATION AND MANAGEMENT FIELD GUIDE

Whether you’re a new or experienced producer, agrologist or field scout in Western Canada, “What’s ‘bugging’ this crop?” and “Does it need to be controlled?” are typical questions raised when scouting for pests in a field of grain, oilseed, pulse or forage.
This new, 152-page, full-colour field guide, now available online, is designed to help you make informed decisions in managing over 90 harmful pests of field and forage crops in Western Canada. Better decision making helps save time and effort and eliminates unnecessary pesticide applications to improve your bottom line. The guide also helps the reader identify many natural enemies that prey on or parasitize pest insects. Recognizing and fostering populations of natural enemies will enhance their role in keeping or reducing pest populations below economic levels.
FREE download from
Click here to download English, French

What you’ll find inside:
Description of over 90 economic pests and 30+ natural enemy species or species groups:
  • diagnostic characteristics
  • life cycle
  • damage
  • monitoring/scouting techniques
  • economic threshold
  • control options: biological, cultural and chemical
Large full-colour photos depicting various life stages of featured pests and natural enemies
Overview of Integrated Pest Management (IPM) strategies
Natural enemy and pest relationships

Book Description
Author: Hugh Philip, 2015
Published by: Agriculture and Agri-Food Canada, Saskatoon, SK [with funding from the Pest Management Centre’s Pesticide Risk Reduction Program]
Pages: 152
Downloadable formats: pdf and pdf-enhanced [features internal hyperlinks allowing the reader to quickly jump to referenced pages]
Languages: Available in English and French
French title: Guide d’identification des ravageurs des grandes cultures et des cultures fourragères et de leurs ennemis naturels et mesures de lutte applicables à l’Ouest canadien
Dimensions: 27.9 x 21.6 cm (landscape)
Document numbers – regular pdf
  • ISBN: 978-1-100-25768-6
  • Catalogue Number: A59-23/2015E-PDF
  • Department Number: AAFC No. 12327E
Document numbers – pdf-enhanced
  • ISBN: 978-1-100-25952-9
  • Catalogue Number: A59-23/2015E-PDF1
  • Department Number: AAFC No. 12346E

Alfalfa Weevil Biology and Management Fact Sheet

Julie Soroka and prairiepest_admin
Week 5

Calling all alfalfa producers: Have you seen this culprit feeding on alfalfa leaves?

Contact for more information about this image.

Research led by Dr. Julie Soroka of AAFC-Saskatoon has resulted in a new Fact Sheet summarizing the biology and management of the Alfalfa weevil (Curculionidae: Hypera postica) which growers can view here.

Textual summary, photos of the weevil, the damage it causes AND the parasitoid that attacks it are all featured to aid in-field scouting and management of the Alfalfa weevil.

Wind Trajectories

Ross Weiss, Owen Olfert, Serge Trudel and prairiepest_admin
Week 5
trajectories Related to Diamondback Moth (DBM) and Aster Leafhopper
Introductions to the Canadian Prairies in 2015

wind events capable of carrying insect pests from source areas in the USA can
be identified by following trajectories for air parcels through time. 
altitude air masses, originating from southern locations, frequently move
northerly to Canadian destinations. Insect pest species such as Diamondback
moth and Aster leafhoppers, traditionally unable to overwinter above the 49th
parallel, can utilize these air masses in the spring to move north from Mexico
and the United States (southern or Pacific northwest).
Wind trajectory
data processing by AAFC-Saskatoon Staff (Weiss & Olfert) began in April.
 Reverse Trajectories track air masses arriving across the
prairies back to their point of origin.  Forward Trajectories predict favorable winds
expected to arrive across the Canadian Prairies.  
Updated: June 1,
1.  Reverse
trajectories (RT)
Pacific Northwest (PNW) – Relative to the previous week,
there has been an increase in the number of
reverse trajectories that were predicted to cross the prairies over the
last few days (May 30 – 1; May 31 – 10; June 1 – 17).
2.  Forward
trajectories (FT)
For the last couple of
weeks the winds originating over southwest USA were generally tracking
eastward, to the Atlantic Ocean. Over the last few days, forward trajectories
are predicted to move north of 49oN before moving in an eastward
direction (e.g. Brownsville TX). Over the next few days these trajectories may
carry insects north to the prairies.
3.  Trajectory
summary for April 1-May 28, 2015
Based trajectory data from
April 1 – May 28, 2015, a greater number of trajectories were
predicted to arrive across the prairies originating from the Pacific northwest (Figure 1) compared to southwest USA
(Figure 2).

Figure 1
Figure 2