|
Canola Insect
Trapping Network
Bertha Armyworm
|
|
Week of
|
|
2003
|
June 17
|
June 24 |
July 1 |
July 8
|
July 15 |
July 22 |
July 29 |
Cum.
Total
|
|
North Central Region
|
|
|
|
|
|
|
|
|
Renville County-W. Mohall
Trapper-Janet Knodel |
43 |
123 |
127 |
73 |
37 |
37 |
|
442 |
Bottineau County-Bottineau
Trapper-Janet Knodel
|
34 |
53 |
32 |
40 |
8 |
9 |
2 |
188 |
Bottineau County-Kramer
Trapper-Tim Semler
|
51
|
85
|
70 |
63 |
6 |
|
|
275 |
Bottineau County-Gardena
Trapper-Tim Semler
|
18
|
46
|
32 |
46 |
4 |
|
|
146 |
Mountrail County-Strobeck
Trapper-Jim Hennessy
|
12 |
53 |
29 |
22 |
19 |
27 |
|
162 |
Mountrail County-East Belden
Trapper-Jim Hennessy
|
11 |
61 |
102 |
91 |
109 |
71 |
|
445 |
Mountrail County-North
Stanley
Trapper-Jim Hennessy
|
13 |
84 |
16 |
44 |
64 |
38 |
|
259 |
Mountrail County- North Belden
Trapper-Jim Hennessy
|
3 |
7 |
95 |
39 |
48 |
31 |
|
223 |
Mountrail County-Ross
Trapper-Jim Hennessy
|
17 |
142 |
79 |
112 |
143 |
161 |
|
654 |
Ward County-NCREC, Minot
Trapper-Janet Knodel
|
8 |
23 |
18 |
7 |
2 |
4 |
0 |
63 |
Ward County-Iota Flats
Trapper-Mike Rose
|
Set-out |
30 |
25 |
20 |
8 |
|
|
83 |
|
South Central Region
|
|
|
|
|
|
|
|
|
Mercer County-Hazen 1
Trapper-Bruce Schmidt
|
217 |
52 |
78 |
34 |
28 |
5 |
|
414 |
Mercer County-Hazen 2
Trapper-Bruce Schmidt
|
38 |
15 |
68 |
10 |
1 |
0 |
|
132 |
|
Northwest Region
|
|
|
|
|
|
|
|
|
Divide County-Crosby
Trapper-Keith Brown
|
47 |
50 |
27 |
12 |
0 |
|
|
136 |
McKenzie County-Arnegard
Trapper-Dale Naze
|
0
|
17 |
45
|
3 |
0 |
|
|
65 |
|
Southwest Region
|
|
|
|
|
|
|
|
|
Slope County-Amidon
Trapper-Roger Ashley
|
|
|
14 |
|
|
|
|
14 |
Hettinger County-New England
Trapper-Roger Ashley
|
|
|
2 |
|
|
|
|
2 |
Dunn County-New Hradec
Trapper-Roger Ashley
|
|
|
4 |
|
|
|
|
4 |
|
Northeast Region
|
|
|
|
|
|
|
|
|
Cavalier County-Langdon
Trapper-Bryan Hanson
|
3
|
6
|
18
|
7 |
11 |
|
|
45
|
Minnesota-
Dave LeGare
|
|
|
|
|
|
|
|
|
|
Pennington County-Thief River Falls
|
|
|
Set-out |
0 |
0 |
|
|
0 |
|
Kittson County-Kennedy |
-- |
3 |
0 |
0 |
0 |
|
|
3 |
|
Roseau County-Roseau |
-- |
4 |
2 |
0 |
0 |
|
|
6 |
|
Marshall County-Grygla |
-- |
3 |
0 |
0 |
|
|
|
3 |
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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