Fifteen sites reporting this week. European corn borer (ECB-E) was caught at two sites and ECB-Z was caught at five sites. Corn earworm (CEW) was caught at 6 of the reporting sites. Two of the six sites reporting CEW were over threshold, indicating a need for a spray, please see the chart at the bottom of this page to determine the correct spray interval for your field. Fall armyworm (FAW) was caught at only one site. Most sites now have western bean cutworm (WBC) traps set, but no moths were caught.
| Location | ECB-E | ECB-Z | CEW | FAW | WBC | Total WBC to date |
| Avoca (Steuben Co.) | 0 | 0 | 0 | 0 | 0 | 0 |
| Avon (Livingston Co.) | 0 | 0 | 1 | NA | 0 | 0 |
| Baldwinsville (Onondaga Co.) | 0 | 0 | 0 | 0 | 0 | 0 |
| Batavia (Genesee Co.) | 0 | 0 | 1 | 0 | 0 | 0 |
| Bellona (Yates Co.) | NA | NA | NA | NA | NA | NA |
| Eden (Erie Co.) | 0 | 5 | 3 | 1 | 0 | 0 |
| Farmington (Ontario Co.) | 0 | 0 | 2 | 0 | 0 | 0 |
| Hamlin (Monroe Co.) | NA | NA | NA | NA | NA | NA |
| Kennedy (Chautauqua Co.) | NA | NA | NA | NA | NA | 0 |
| King Ferry (Cayuga Co.) | NA | NA | NA | NA | NA | NA |
| Kirkville (Madison Co.) | NA | NA | NA | NA | NA | NA |
| LeRoy (Genesee Co.) | NA | NA | NA | NA | NA | NA |
| Lockport (Niagra Co.) | 0 | 5 | 0 | 0 | 0 | 0 |
| Oswego (Oswego Co.) | 0 | 0 | 0 | 0 | 0 | 0 |
| Owego (Tioga Co.) | 0 | 0 | 0 | 0 | 0 | 0 |
| Pavilion (Genesee Co.) | 0 | 0 | 0 | 0 | 0 | 0 |
| Penn Yan (Yates Co.) | 1 | 4 | 1 | 0 | NA | NA |
| Plessis (Jefferson Co.) | NA | NA | NA | NA | NA | NA |
| Preble (Cortland Co.) | NA | NA | NA | NA | NA | NA |
| Seneca Castle (Ontario Co.) | 27 | 9 | 1 | 0 | 0 | 0 |
| Sherwood (Cayuga Co.) | NA | NA | NA | NA | NA | NA |
| Spencerport (Monroe Co.) | 0 | 3 | 0 | 0 | 0 | 0 |
| Waterport (Orleans Co.) | NA | NA | NA | NA | 0 | 0 |
| Williamson (Wayne Co.) | 0 | 0 | 0 | 0 | 0 | 0 |
| ECB – European Corn Borer CEW – Corn Earworm FAW – Fall Armyworm WBC – Western Bean Cutworm NA – not available |
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| trap catches for the week of 6.17.14 – 6.24.14 |
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Scouting of bare ground sweet corn should begin when the tassel starts to emerge. When scouting focus on the emerging tassel. Separate the leaves and look down into the tassel for any signs of feeding, frass or larvae. The threshold for ECB and FAW is 15% infested plants at tassel emergence. I scouted a field in early tassel today that was just over the 15% threshold. To help you scout your fields please view the new video titled How to Scout Fresh Market Sweet Corn. This video will show you how and when to scout sweet corn using the Sweet corn scouting form (pdf).
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- ECB frass in emerging tassel.
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- ECB larva on tassel
