Eleven sites reporting this week with European corn borer (ECB)-E trapped at three of those sites and ECB-Z trapped at one site. Corn earworm (CEW) was trapped at the Eden site with a catch high enough to be on a 4-5 day spray schedule. Fall armyworm (FAW) was also reported this week at the Preble site. Most sites will set Western bean cutworm (WBC) traps within the next 2 weeks.
Peak ECB-E flight occurs at approximately 631 degree days modified base 50. A few sites have already reached this and several other sites will see degree day accumulations for peak flight reached within the next week (see degree days for each site in table below).
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
J.W. Apple, Department of Entomology, University of Wisconsin-Madison
Sweet corn field 6.6.2017
| Location | ECB-E | ECB-Z | CEW | FAW | WBC | DD to date |
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| Avoca (Steuben Co.) | NA | NA | NA | NA | NA | 695.0 | |
| Avon (Livingston Co.) | NA | NA | NA | NA | NA | 601.0 | |
| Baldwinsville (Onondaga Co.) | NA | NA | NA | NA | NA | 588.5 | |
| Batavia (Genesee Co.) | NA | NA | NA | NA | NA | 538.7 | |
| Farmersville Sta. (Cattaraugus Co.) | 0 | 0 | 0 | 0 | NA | 488.3 | |
| Bellona (Yates Co.) | NA | NA | NA | NA | NA | 647.9 | |
| Eden (Erie Co.) | 0 | 0 | 7 | 0 | NA | 648.9 | |
| Farmington (Ontario Co.) | 6 | 0 | 0 | 0 | NA | 578.5 | |
| Hamlin (Monroe Co.) | NA | NA | NA | NA | NA | 476.9 | |
| Kennedy (Chautauqua Co.) | NA | NA | NA | NA | NA | 514.0 | |
| King Ferry (Cayuga Co.) | NA | NA | NA | NA | NA | 614.3 | |
| Kirkville (Madison Co.) | NA | NA | NA | NA | NA | 549.5 | |
| LeRoy (Genesee Co.) | NA | NA | NA | NA | NA | 551.2 | |
| Ransomville (Niagara Co.) | NA | NA | NA | NA | NA | 531.5 | |
| Oswego (Oswego Co.) | NA | NA | NA | NA | NA | 455.5 | |
| Owego (Tioga Co.) | NA | NA | NA | NA | NA | 488.3 | |
| Pavilion (Genesee Co.) | NA | NA | NA | NA | NA | 600.4 | |
| Penn Yan (Yates Co.) | 0 | 0 | 0 | 0 | NA | 449.5 | |
| Plessis (Jefferson Co.) | NA | NA | NA | NA | NA | 602.0 | |
| Preble (Cortland Co.) | 0 | 0 | 0 | 5 | NA | 567.0 | |
| Seneca Castle (Ontario Co.) | 15 | 0 | 0 | 0 | NA | 571.2 | |
| Sherwood (Cayuga Co.) | NA | NA | NA | NA | NA | 614.3 | |
| Spencerport (Monroe Co.) | NA | NA | NA | NA | NA | 601.0 | |
| Waterport (Orleans Co.) | NA | NA | NA | NA | NA | 472.5 | |
| Williamson (Wayne Co.) | NA | NA | NA | NA | NA | 500.6 | |
| ECB – European Corn Borer CEW – Corn Earworm FAW – Fall Armyworm WBC – Western Bean Cutworm DD – Degree Day (base 86/50F) accumulation NA – not available |
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| trap catches for the week of 5.30.17 – 6.6.17 |
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| Eastern NY Locations | ECB-E | ECB-Z | CEW | FAW | WBC | DD to date |
|
| Accord (Ulster Co.) | NA | NA | NA | NA | NA | 607.6 | |
| Amsterdam (Fulton Co.) | 0 | 0 | NA | NA | NA | 606.1 | |
| Athens (Greene Co.) | NA | NA | NA | NA | NA | 654.8 | |
| Clifton Park (Saratoga Co.) | 0 | 0 | NA | NA | 0 | 606.1 | |
| Feura Bush (Albany Co.) | 0 | 0 | NA | NA | 0 | 550.2 | |
| Florida (Orange Co.) | 0 | 2 | 0 | 0 | . | 689.5 | |
| Greenwich (Washington Co.) | 3 | 0 | NA | NA | NA | 556.5 | |
| Kinderhook (Columbia Co.) | NA | NA | NA | NA | NA | 616.1 | |
| Peru (Clinton Co.) | NA | NA | NA | NA | NA | 447.3 | |
| Plattsburgh (Clinton Co.) | NA | NA | NA | NA | NA | 421.1 | |
| Salem (Washington Co.) | NA | NA | NA | NA | NA | 556.5 | |
| Schoharie (Schoharie Co.) | 0 | 0 | NA | NA | NA | . | |
| Stone Ridge (Ulster Co.) | NA | NA | NA | NA | NA | 607.6 | |
| ECB – European Corn Borer CEW – Corn Earworm FAW – Fall Armyworm WBC – Western Bean Cutworm DD – Degree Day (base 86/50F) accumulation since May 1st NA – not available |
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| trap catches for the week of 5.30.17 – 6.6.17 |
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