|
Canola Insect
Trapping Network
Bertha Armyworm
|
|
Week of
|
|
2004
|
June 15
|
June 22 |
June 29 |
July 6
|
July 13 |
July 20 |
July 27 |
Cum.
Total
|
|
North Central Region
|
|
|
|
|
|
|
|
|
Renville County-W. Mohall
Trapper-Janet Knodel |
set-out |
0 |
1 |
13 |
8 |
18 |
2 |
42 |
Bottineau County-Kramer
Trapper-Tim Semler
|
set-out
|
0
|
6 |
21 |
12 |
4 |
1 |
44 |
Bottineau County-Bottineau
Trapper-Tim Semler
|
set-out
|
2
|
12 |
32 |
9 |
2 |
4 |
61 |
Ward County-NCREC, Minot
Trapper-Janet Knodel
|
set-out |
0 |
1 |
13 |
2 |
4 |
0 |
20 |
Ward County-Carpio
Trapper-Mike Rose
|
|
|
set-out |
13 |
9 |
3 |
-- |
25 |
|
Northwest Region
|
|
|
|
|
|
|
|
|
Divide County-Crosby
Trapper-Keith Brown
|
set-out |
1 |
0 |
8 |
5 |
3
|
0
|
17 |
McKenzie County-Arnegard
Trapper-Dale Naze
|
set-out
|
4 |
4
|
2 |
1 |
0 |
-- |
11 |
Burke County-NE Bowbells
Trapper-Dan Folske
|
|
|
set-out |
28 |
30 |
20 |
7 |
85 |
Burke County-N Bowbells
Trapper-Dan Folske
|
|
|
set-out |
12 |
12 |
40 |
8 |
72 |
Burke County-Columbus
Trapper-Dan Folske
|
|
|
set-out |
12 |
8 |
41 |
4 |
65 |
Williams County-Williston
Trapper-Chet Hill
|
|
|
set-out
|
3 |
2 |
2 |
-- |
7 |
|
Northeast Region
|
|
|
|
|
|
|
|
|
Cavalier County-Langdon
Trapper-Bryan Hanson
|
|
|
set-out
|
1 |
12 |
17 |
20 |
50 |
|
Southwest Region
|
|
|
|
|
|
|
|
|
Hettinger County-New England
Trapper-Roger Ashley
|
2 |
2 |
0 |
0 |
0 |
0 |
0 |
4 |
Dunn County-Dickinson
Trapper-Roger Ashley
|
0 |
0 |
0 |
0 |
0 |
0 |
2 |
2 |
|
Minnesota-Dave LeGare
|
|
|
|
|
|
|
|
|
|
Pennington County-Thief River Falls
|
|
set-out |
0 |
0 |
1 |
7 |
0 |
8 |
|
Marshall County-Grygla
|
|
set-out |
0 |
0 |
0 |
1 |
4 |
5 |
|
Roseau County-Roseau
|
|
|
set-out |
0 |
0 |
0 |
0 |
0 |
|
Kennedy
|
|
|
|
|
set-out |
1 |
1 |
2 |
Interpreting Bertha Armyworm Cumulative Moth Counts
The population of adult bertha armyworms will be monitored during the flight
and egg-laying period. Monitoring is done using pheromone baited traps. The monitoring period extends from
about mid-June through July. Each week moths caught in the traps are counted, and data for that
week, as well as cumulative moth counts, are entered into the table for the appropriate
trapping area. The cumulative total number of moths will continue to rise until the end of
the monitoring period. The following table relates the cumulative moth counts with the risk of larval infestation.
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