Twenty-seven sites reported this week. European corn borer (ECB)- E was caught at five sites and ECB-Z was caught at eight sites. The hybrid ECB was caught at two of the seven sites trapping for it: Hurley (2) and Penn Yan (1). Nineteen sites reported corn earworm (CEW) catches this week with sixteen sites high enough to be on a 4, 5, or 6 day spray schedule (see table at bottom of post). Fall armyworm (FAW) was caught at seventeen sites and Western bean cutworm (WBC) was caught at twenty-four sites.
Often at this time of year we are catching CEW at most locations and in high enough numbers that other moths will be controlled by the spray timing needed for CEW. In the absence of CEW, continue to scout for ECB egg masses, and ECB and FAW larvae and feeding damage, using a threshold of 15% infested plants in tassel emergence stage fields and 5% in silk stage fields.
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- ECB egg mass
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- ECB feeding damage on leaves.
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- ECB larva in tassel
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- Fall armyworm egg mass.
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- Fall armyworm feeding damage and frass.
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- Fall armyworm larva, note the inverted ‘Y’ om head capsule.
| Location | ECB-E | ECB-Z | CEW | FAW | WBC | DD | |
| Western NY trap Catch |
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| Baldwinsville (Onondaga Co.) | 0 | 0 | 17 | 5 | 2 | 1913 | |
| Batavia (Genesee Co.) | 0 | 0 | 0 | 0 | 3 | 1911 | |
| Bellona (Yates Co.) | 1 | 2 | 2 | 10 | 11 | 1937 | |
| Collins (Erie Co.) | NA | NA | NA | NA | NA | 1847 | |
| Eden (Erie Co.) | 0 | 0 | 1 | 5 | 6 | 1890 | |
| Farmington (Erie Co.) | 0 | 0 | 0 | 1 | 3 | 1979 | |
| Geneva (Ontario Co.) | 1 | 1 | 19 | 0 | 3 | 1927 | |
| Hamlin (Orleans Co.) | 0 | 6 | 109 | 35 | 17 | 1878 | |
| King Ferry (Cayuga Co.) | 0 | 0 | 5 | 104 | 3 | 1856 | |
| Kirkville (Madison Co.) | NA | NA | NA | NA | NA | 1954 | |
| LeRoy (Genesee Co.) | 4 | 7 | 43 | 3 | 86 | 1899 | |
| Lyndonville (Orleans Co.) | 0 | 2 | 1 | 0 | 25 | 1867 | |
| Oswego (Oswego Co.) | 0 | 0 | 0 | 0 | 15 | 1774 | |
| Panama (Chautauqua Co.) | 3 | 0 | 3 | 0 | 2 | 1631 | |
| Penn Yan (Yates Co.) | 0 | 7 | 7 | 0 | 0 | 1888 | |
| Portville (Cattaraugus Co.) | 1 | 0 | 5 | 3 | 5 | 1670 | |
| Preble (Cortland Co.) | NA | NA | NA | NA | NA | 1633 | |
| Ransomville (Niagara Co.) | NA | NA | NA | NA | NA | 1982 | |
| Seneca Castle (Ontario Co.) | 0 | 0 | 0 | 0 | 0 | 1883 | |
| Sherwood (Cayuga Co.) | 0 | 0 | 0 | 97 | 3 | 2012 | |
| Williamson (Wayne Co.) | 0 | 0 | 41 | 0 | 27 | 1720 | |
| Eastern NY trap Catch |
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| Accord (Ulster Co.) | 0 | 0 | 27 | 34 | 0 | 2087 | |
| Afton (Chenango Co.) | 0 | 1 | 1 | 2 | 1 | 1714 | |
| Feura Bush (Albany Co.) | 0 | 1 | 17 | 1 | 2 | 2026 | |
| Florida (Orange Co.) | NA | NA | NA | NA | NA | 2127 | |
| Greenwich (Washington Co.) | NA | NA | NA | NA | NA | 1981 | |
| Hurley (Ulster Co.) | 0 | 0 | 15 | 6 | 2 | 2086 | |
| Kinderhook (Columbia Co.) | 0 | 0 | 62 | 12 | 2 | 2028 | |
| Melrose (Rensselear Co.) | NA | NA | NA | NA | NA | 2002 | |
| Peru (Clinton Co.) | 0 | 0 | 0 | 1 | 33 | 1841 | |
| Plattsburgh (Clinton Co.) | 0 | 0 | 0 | 1 | 103 | 1887 | |
| Plessis (Jefferson Co.) | 0 | 0 | 3 | 0 | 20 | 1845 | |
| South Colton (St. Lawrence Co.) | NA | NA | NA | NA | NA | 1582 | |
| Stone Ridge (Ulster Co.) | NA | NA | NA | NA | NA | 2082 | |
| Ticonderoga (Essex Co.) | 0 | 0 | 0 | 4 | 10 | 1937 | |
| Tivoli (Dutchess Co.) | 0 | 0 | 34 | 0 | 1 | 2080 | |
| Unadilla (Delaware Co.) | NA | NA | NA | NA | NA | 1707 | |
| ECB – European Corn Borer CEW – Corn Earworm FAW – Fall Armyworm WBC – Western Bean Cutworm NA – not available DD – Degree Day (base 86/50) April 1st accumulation Climate Smart Farming |
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| trap catches for the week of 8.9.22 – 8.16.22 |
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Interactive Sweet Corn Pheromone Trapping Network Map
Dry Bean Western Bean Cutworm Alert
8.16.22
This year we are monitoring 12 WBC traps placed next to dry bean fields. Dry bean growers should scout adjacent corn for WBC eggs and larvae when cumulative trap catch reaches 50 moths. All sites except Pavilion have reached 50 cumulative moths. Peak flight for most of the sites happened last week (numbers in red below). All dry bean growers should begin scouting pods for WBC feeding about 10 days after peak flight regardless of cumulative trap catch, and should continue to scout for three weeks, especially if damage has been seen in recent years.
Check 10 random spots in a field, 5 plants per spot. Inspect all the pods on the plants looking for holes. Surface feeding can be caused by other insects. WBC will mine directly into the pod and will often feed on the seed inside. European corn borer will also feed inside the pod and would most likely still be present. If there is damage going directly into the pod and seed but no larva present, it is quite possibly WBC. During the day WBC larva are not actively feeding in the pod, instead they drop to the soil and will remain there until night. Fresh damage will be green, not brown.
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- Early damage made by small WBC larvae.
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- ECB in pod.
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- Damage caused by slug feeding, note slime trail.
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- Later feeding damage going through pod and into beans.
This project is funded by the NYS Dry Bean Industry.
| Dry Bean Location | 7.5.22 | 7.12.22 | 7.19.22 | 7.26.22 | 8.2.22 | 8.9.22 | 8.16.22 | Cumulative WBC |
| Alexander (Genesee Co.) | 0 | 1 | 11 | 18 | 23 | 9 | 10 | 72 |
| Avoca Hill (Steuben Co.) | 0 | 1 | 10 | 31 | 53 | 23 | 6 | 124 |
| Avoca Valley (Steuben Co.) | 0 | 2 | 4 | 19 | 28 | 23 | 12 | 88 |
| Caledonia (Livingston Co.) | 1 | 3 | 8 | 25 | 36 | 36 | 14 | 123 |
| Churchville (Monroe Co.) | 0 | 3 | 30 | 36 | 31 | 24 | 11 | 135 |
| LeRoy (Genessee Co.) | 0 | 2 | 67 | 92 | 95 | 64 | 16 | 336 |
| Pavilion (Genesee Co.) | 0 | 1 | 5 | 4 | 3 | 5 | 3 | 21 |
| Penfield (Monroe Co.) | 3 | 2 | 26 | 94 | 120 | 85 | 32 | 362 |
| Penn Yan 1 (Yates Co.) | 1 | 2 | 6 | 19 | 29 | 20 | 9 | 76 |
| Penn Yan 2 (Yates Co.) | 0 | 0 | 12 | 7 | 31 | 11 | 13 | 74 |
| Wayland (Steuben Co.) | 1 | 1 | 4 | 34 | 90 | 47 | NA | 177 |
| Wyoming (Wyoming Co.) | 0 | 3 | 24 | 13 | 13 | 1 | 1 | 55 |
| Western Bean Cutworm trap counts by date NA – not available |
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