Black Cutworm

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DATCP has monitored early-season black cutworm migration flights for more than 20 years, with the help of volunteer cooperators throughout the state. Moth counts from the annual trapping survey provide precise data on the timing of black cutworm arrival into Wisconsin and are used to forecast optimal scouting and treatment windows based on significant captures. A significant capture occurs when nine or more moths are trapped in two nights.

For the 2021 season, 48 pheromone traps have bee​n established in 16 counties. The first moths of the season were registered during Week 1 (April 1-7), and significant captures of 21 and 23 moths were recorded at sites in Dane, Green, Iowa and Lafayette counties Week 2 (April 8-14). ​

The results of the 2021 survey are presented below and will be updated weekly through early June. Current multistate migration maps are available at black cutworm - Corn ipmPIPE.

​​​Black Cutworm Counts fo​r the Week Ending May 27​​​, 2021​​​

​​County​
Location​​
Week 1​ Week 2​ Week 3​ Week 4​ Week 5​
Week 6​ Week 7​
Week 8
​Adams
​Springville
​0
​0
​0

​2
​Buffalo
​Alma
​0
​0
​0
​0
​0
​0
​0​4
​Buffalo
​Gilmanton
​0
​0
​0
​0
​0
​0
​0​2
​Columbia
​Pardeeville
​0
​4
​0
​1
​2
​1
​0​0
​Dane
​Belleville N
​1
​18*
​0
​0
​0
​6
​0​0
​Dane
​Cross Plains N
​0
​7
​0
​0
​3
​0
​0​0
​Dane 
​Cross Plains S
​0
​9
​0
​0
​2
​5
​0​0
​Dane 
​Middleton N
​0
​2
​0
​0
​0
​2
​0​0
​Dane
​Middleton S
​1
​0
​0
​0
7
​4
​5​2
​Dane
​Mt. Horeb
​2
​2
​0
​0
​7
​1
​2​3
​Dane
​Oregon NW
​0
​1
​0
​0
1
​0
​0​1
​Dane
Verona
​0
​2
​1
​0
​4
​0
​0​0
​Dodge
Beaver Dam
​0
​1
​0
​4
16*
​13*
​37​4
Dodge
​Lowell
​0
​0
​0
​1
​11*
​8
​11​8
​Dodge
Waupun
​0
​11
​2
​4
​35*
​23*
​56​12*
​Fond du Lac
Lamartine​​0
​2
​0
​0
​14*
7
​3​3
Fond du Lac
Ripon​​0
​0
​3
​16*
​19*
​29​1
​Grant
Prairie du Chien
​0

​3
​4
​0
​0
​Green
Albany NW​​1
​1
​1
​0
​0
​5
​0​0
​Green
Albany SW​
​17**
​8
​5
​2
​1
​4
​1
​Green
Browntown NE
​5
​7
​0
​0
​0
​2
​1​1
​Green
Browntown NW​​9
​2
​4
​2
​1
​3
​2​0
​Green
​Monroe NE
​1
​23*
​6
​1
​11*
​8
​1​27*
Green
Monroe NW
​2
​10
​0
​0
​10
​3
​2​7
​Green
​Monticello S
​4
​21*
​1
​2​
​8
​8
​3​3
​Green 
​New Glarus E
​0
​4
​1
​0
​0
​5
​0​0
​Iowa
​Barneveld E
​1
​3
​0
​0
​2
​0
​0​2
​Iowa
​Barneveld W
​2
​8
​0
​0
​9
​18*
​1​6
​Iowa
​Dodgeville E
​4
​10
​3
​1
​3
​53*
​3​18
​Iowa
​Dodgeville W
​1
​9
​3
​2
​2
​9
​4​11*
​Iowa
​Mineral Point E
​5
​15*
​0
​2
​8
​15*
​0​9
​Iowa
​Mineral Point W
​2
​17*
​2
​3
​1
​2
​0​2
​La Crosse
​Onalaska
​0
​0
​0
​1
​1
​2
​3​5
​La Crosse
​Rockland
​0
​1
​0
​0
​0
​2
​6​7
​La Crosse
​West Salem
​0
​0
​0
​2
​2
​0
​0​2
​Lafayette
​Argyle SW
2​​10
​0
​2
​2
​2
​0​1
​Lafayette
​Belmont
​2
​8
​0
​0
​1
​2
​3​6
​Lafayette
​Darlington NW
​2
​3
​4
​0
​0
​0
​​0
​0
​Lafayette
​Darlington S
​0
​5
​0
​1
​4
​5
​0​2
​Lafayette
​Darlington SE
​6
​3
​0
​1
​1
​0
​0​0
​Lafayette
​Darlington SW
3
​19*
​2
​3
​14*
​2
​16​16*
​Lafayette
​Mineral Point S
​2
​14*
7​​0
​2
​2
​0​3
​Lafayette
​Wiota
​4
​8
​1
​2
​2
​3
​1​2
​Langlade
​Antigo
​0
​0
​0
​0
​9
​1
​3​9
​Monroe
​Sparta
​0
​0
​0
​2
​0
​0
​2​4
​Pepin
​Durand
​0
​0​
​0
​13*
​5
​4
​1
​Racine
​Burlington
​0
​0
​0
​0
​0
​0
​0
​Vernon
​Stoddard
​0
​0​
​0
​3
​3
​1
​4​4
​Key: *Significant capture occurs when 9 or more moths are caught in a two-night period. Week 1 (April 1-7); Week 2 (April 8-14); Week 3 (April 15-21); Week 4 (April 22-28); Week 5 (April 29-May 5); Week 6 (May 6-12); Week 7 (May 13-19); Week 8 (May 20-26); Week 9 (May 27-June ​​2)​​ ​ ​ ​ ​ ​ ​ ​ ​
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