|
Canola Insect
Trapping Network |
|||||||
|
Week of |
|||||||
|
- |
June 20 | June 27 | July 4 | July 11 | July 18 | July 25 |
Cum. Total |
|---|---|---|---|---|---|---|---|
|
North Central Region |
-- | -- | -- | -- | -- | -- | |
|
Renville County-W. Mohall Trapper-Louie Voigt |
0 | 10 | - | 11 | 1 | 2 | 24 |
|
Bottineau County-Bottineau Trapper-Tim Semler |
setout | 26 | 8 | 4 | 4 | 2 | 44 |
|
Bottineau County-Kramer Trapper-Tim Semler |
setout | 16 | 10 | 8 | 1 | 0 | 35 |
|
Bottineau County-Willow City Trapper-Tim Semler |
setout | 13 | 14 | 3 | 2 | 1 | 33 |
|
Burke County-Bowbells Trapper-Dan Folske |
setout | ||||||
|
Burke County-Bowbells 2 Trapper-Dan Folske |
setout | ||||||
|
Burke County-Powers Lake Trapper-Dan Folske |
setout | ||||||
|
Ward County-NCREC, Minot Trapper-Jan Knodel |
0 | 5 | 0 | 1 | 0 | 0 | 6 |
|
Ward County-Kenmare Trapper-Mike Rose |
setout | -- | 50 | 11 | pulled | -- | 61 |
| Western Region | -- | -- | -- | -- | -- | -- | -- |
| McKenzie County-Arnegard Trapper-Dale Naze | 23 | 4 | 4 | 2 | 0 | 2 | 35 |
| Northwest Region | -- | -- | -- | -- | -- | -- | -- |
|
Divide County-Crosby (north) Trapper-Keith Brown |
7 | 40 | 9 | 19 | 4 | pulled | 79 |
| Williams County-Williston Trapper-Chet Hill | -- | setout | 6 | - | 2 | 4 | 12 |
| Southwest Region | -- | -- | -- | -- | -- | -- | -- |
|
Slope County-New England Trapper-Roger Ashley |
setout | 4 | 5 | 1 | 1 | 0 | 11 |
|
Dunn County-Dickinson Trapper-Roger Ashley |
setout | 3 | 1 | 0 | 1 | 1 | 6 |
| Northeast Region | -- | -- | -- | -- | -- | -- | -- |
|
Cavalier County-Langdon Trapper-Bryan Hanson |
-- | -- | -- | -- | 13 | 6 | 19 |
| Minnesota | |||||||
| Pennington County-Thief River Falls Trapper-Dave LeGare | -- | 1 | 0 | 0 | 1 | 0 | 2 |
| Roseau Trapper-Dave LeGare | -- | 0 | 0 | 0 | 0 | 0 | 0 |
| Grygla Trapper-Dave LeGare | -- | 0 | 5 | 0 | 0 | 0 | 5 |
|
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. |
|||||||
| Cumulative number of Moths | ||
| From | To | Larval Infestation Risk Level |
| 0 | 300 | Low - Infestations are unlikely to be widespread, but fields should be inspected for signs of insects or damage. |
| 300 | 900 | Uncertain - Infestations may not be widespread, but fields that were particularly attractive to egg-laying females could be infested. Check your fields. |
| 900 | 1200 | Moderate - Canola fields should be sampled regularly for larvae and for evidence of damage. |
| 1200 | 1500+ | High - Canola fields should be sampled frequently for larvae and for evidence of damage. |
| (Other links: Manitoba Bertha Armyworm Factsheet) | ||