Twenty-five sites reporting this week. European corn borer (ECB)-E was caught at ten sites and ECB-Z was caught at six sites. Nine sites caught corn earworm (CEW). Fall armyworm (FAW) was caught at three sites and no Western bean cutworm (WBC) were caught this week.
Several sites reporting ECB larvae and feeding damage in emerging tassels while other sites have corn that is beginning to silk. The thresholds when scouting differ for these two stages of corn. For tassel emergence corn the threshold is 15% infested plants. As the tassels begin to emerge larvae will leave the tassel and move down the plant looking for protected places to feed. Insecticide applications need to be timed to kill larvae before they bore into a new feeding location where they will be protected from sprays. For silking corn the threshold drops to 5% infested plants. Scout the ear zone, two leaves above and one leaf below the ears, for egg masses, damage and larvae.
Many sites also reported CEW catches this week. CEW is difficult to scout for but pheromone trap catches may be used to time sprays in silking corn according to the table at the bottom. Add one day to the recommended spray interval if daily maximum temperatures are less than 80° F for the previous 2-3 days.
| Location | ECB-E | ECB-Z | CEW | FAW | WBC | DD to Date |
|
| Accord (Ulster Co.) | NA | NA | NA | NA | NA | 936 | |
| Amsterdam (Fulton Co.) | 0 | 0 | 0 | 0 | 0 | 721 | |
| Athens (Greene Co.) | NA | NA | NA | NA | NA | 857 | |
| Attica (Wyoming Co.) | 0 | 1 | 0 | 0 | 0 | 688 | |
| Avon (Livingston Co.) | 0 | 0 | 1 | 0 | 0 | 706 | |
| Baldwinsville (Onondaga Co.) | 3 | 0 | 3 | 1 | 0 | 717 | |
| Basom (Genesee Co.) | NA | NA | NA | NA | NA | 724 | |
| Batavia (Genesee Co.) | 0 | 0 | 0 | 0 | 0 | 695 | |
| Bellona (Yates Co.) | NA | NA | NA | NA | NA | 719 | |
| Carlton (Orleans Co.) | 0 | 0 | 0 | 0 | 0 | 623 | |
| Eagle Bridge (Washington Co.) | 0 | 0 | 0 | 0 | 0 | 749 | |
| Eden (Erie Co.) | 0 | 0 | 3 | 0 | 0 | 713 | |
| Farmington (Ontario Co) | 2 | 0 | 0 | 0 | 0 | 724 | |
| Feura Bush (Albany Co.) | 1 | 3 | 1 | 0 | 0 | 868 | |
| Florida (Orange Co.) | NA | NA | NA | NA | NA | 982 | |
| Geneva (Ontario Co.) | 6 | 2 | 0 | 0 | 0 | 699 | |
| Greenwich (Washington Co.) | 0 | 0 | NA | 10 | 0 | 753 | |
| Hamlin (Monroe Co.) | NA | NA | NA | NA | NA | 633 | |
| Hurley (Ulster Co.) | 2 | 0 | 0 | 0 | 0 | 857 | |
| Kennedy (Chautauqua Co.) | NA | NA | NA | NA | NA | 720 | |
| Kinderhook (Columbia Co.) | 0 | 1 | NA | 0 | 0 | 867 | |
| King Ferry (Cayuga Co.) | NA | NA | NA | NA | NA | 677 | |
| Kirkville (Madison Co.) | NA | NA | NA | NA | NA | 733 | |
| Lyndonville (Orleans Co.) | 2 | 0 | 2 | 0 | 0 | 625 | |
| New Paltz (Ulster Co.) | NA | NA | NA | NA | NA | 788 | |
| Oswego (Oswego Co.) | 0 | 0 | 3 | 0 | 0 | 519 | |
| Owego (Tioga Co.) | 0 | 0 | 0 | 0 | 0 | 751 | |
| Penn Yan (Yates Co.) | 2 | 0 | 2 | 0 | 0 | 698 | |
| Peru (Clinton Co.) | 0 | 0 | 0 | 0 | 0 | 608 | |
| Plattsburgh (Clinton Co.) | 1 | 0 | 1 | 0 | 0 | 650 | |
| Plessis (Jefferson Co.) | NA | NA | NA | NA | NA | 425 | |
| Portville (Cattaraugus Co.) | 0 | 0 | 0 | 1 | 0 | 717 | |
| Preble (Cortland Co.) | NA | NA | NA | NA | NA | 551 | |
| Ransomville (Niagara Co.) | 5 | 1 | 3 | 0 | 0 | 650 | |
| Schaghticoke (Rensselear Co.) | NA | NA | NA | NA | NA | 848 | |
| Seneca Castle (Ontario Co.) | 17 | 0 | 0 | 0 | 0 | 663 | |
| Sharon Springs (Schoharie Co.) | NA | NA | NA | NA | NA | 700 | |
| Sherwood (Cayuga Co.) | NA | NA | NA | NA | NA | 668 | |
| South Colton (St. Lawrence Co.) | NA | NA | NA | NA | NA | 496 | |
| Stone Ridge (Ulster Co.) | NA | NA | NA | NA | NA | 836 | |
| Tivoli (Dutchess Co.) | 0 | 1 | 0 | 0 | 0 | 933 | |
| Unadilla (Delaware Co.) | NA | NA | NA | NA | NA | 627 | |
| Williamson (Wayne Co.) | 0 | 0 | 0 | 0 | 0 | 579 | |
| ECB – European Corn Borer CEW – Corn Earworm FAW – Fall Armyworm WBC – Western Bean Cutworm NA – not available DD – Degree Day (base 86/50) accumulation Climate Smart Farming |
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| trap catches for the week of 6.19.19 – 6.25.19 |
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