Thirteen sites reporting this week with European corn borer (ECB)-E caught at 5 sites and ECB-Z caught at 7 sites. ECB numbers are low at all sites except Eden, which reported 23 ECB-Z this week. Approximately half of the trap sites have reached 631 degree days which corresponds with peak ECB-E flight. Five sites are reporting corn earworm (CEW). Four of these sites have trap catches high enough to be on a 5 or 6 day spray schedule. Fall armyworm were caught at 3 sites and western bean cutworm (WBC) has not been caught at any of the trap sites to date.
J.W. Apple, Department of Entomology, University of Wisconsin-Madison
| Location | ECB-E | ECB-Z | CEW | FAW | WBC | DD to Date |
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| Avoca (Steuben Co.) | NA | NA | NA | NA | NA | 598.0 | |
| Avon (Livingston Co.) | 0 | 0 | 0 | 2 | 0 | 716.3 | |
| Baldwinsville (Onondaga Co.) | 4 | 0 | 0 | 1 | 0 | 672.3 | |
| Batavia (Genesee Co.) | NA | NA | NA | NA | NA | 499.5 | |
| Belfast (Allegany Co.) | 0 | 1 | 1 | 0 | 0 | 629.4 | |
| Bellona (Yates Co.) | NA | NA | NA | NA | NA | 742.3 | |
| Eden (Erie Co.) | 0 | 23 | 2 | 0 | 0 | 627.9 | |
| Farmington (Ontario Co.) | 3 | 0 | 0 | 0 | 0 | 639.4 | |
| Hamlin (Monroe Co.) | NA | NA | NA | NA | NA | 617.6 | |
| Kennedy (Chautauqua Co.) | 0 | 3 | 0 | 0 | 0 | 561.7 | |
| King Ferry (Cayuga Co.) | NA | NA | NA | NA | NA | 698.2 | |
| Kirkville (Madison Co.) | NA | NA | NA | NA | NA | 718.5 | |
| LeRoy (Genesee Co.) | NA | NA | NA | NA | NA | 590.7 | |
| Lockport (Niagara Co.) | 1 | 1 | 0 | 0 | 0 | 595.5 | |
| Oswego (Oswego Co.) | 0 | 0 | 0 | 0 | 0 | 625.6 | |
| Owego (Tioga Co.) | NA | NA | NA | NA | NA | 622.6 | |
| Pavilion (Genesee Co.) | NA | NA | NA | NA | NA | 590.7 | |
| Penn Yan (Yates Co.) | 2 | 2 | 2 | 0 | 0 | 711.5 | |
| Plessis (Jefferson Co.) | NA | NA | NA | NA | NA | 597.7 | |
| Preble (Cortland Co.) | 0 | 0 | 0 | 2 | 0 | 673.0 | |
| Seneca Castle (Ontario Co.) | 3 | 2 | 0 | 0 | 0 | 650.6 | |
| Sherwood (Cayuga Co.) | NA | NA | NA | NA | NA | 698.2 | |
| Spencerport (Monroe Co.) | 0 | 3 | 4 | 0 | 0 | 716.3 | |
| Waterport (Orleans Co.) | 0 | 0 | 2 | 0 | 0 | 617.6 | |
| Williamson (Wayne Co.) | NA | NA | NA | NA | NA | 577.9 | |
| ECB – European Corn Borer CEW – Corn Earworm FAW – Fall Armyworm WBC – Western Bean Cutworm NA – not available DD – Degree Day (modified base 50F) accumulation |
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| trap catches for the week of 6.9.15 – 6.16.15 |
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For fields that are in early tassel emergence, scout for any signs of eggs, larvae and feeding damage in the emerging tassel. Separate the leaves and look down into the tassel for any signs of feeding, frass or larvae. The treatment threshold at tassel emergence is 15% infested plants.
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- ECB egg mass
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- Scouting tassel emergence sweet corn
