Twenty-one sites reported this week for Western NY. European corn borer (ECB)-E was caught at nine sites and ECB-Z was caught at six sites this week. Corn earworm (CEW) reported at five sites, all high enough to require a 4, 5, or 6 day spray schedule (see table at bottom of post). Fall armyworm (FAW) continues to increase with 11 sites reporting trap catches. Western bean cutworm (WBC) numbers are increasing with 15 sites reporting trap catches. The site in Eden had 122 WBC caught this week. Please see the bottom of this post for a table of trap catches from Eastern NY.
Where CEW are being caught in high enough numbers to drive the spray schedule, the other worm pests should also be controlled. At locations with low CEW numbers, scout tassel emergence and silk stage fields for ECB, FAW, and WBC egg masses and larvae. Several sites have reached the degree day accumulations for 50% WBC emergence, however, degree day forecasts pertain only to local populations. Last year peak WBC trap catches occurred during the last week of July and the first week of August. Below is a graph showing the average trap catches for Western NY to date.
Average sweet corn trap catches for all reporting sites from 5.31.16 – 7.26.16
Percent WBC moth emergence, data from
University of Nebraska
| Western NY Locations | ECB-E | ECB-Z | CEW | FAW | WBC | DD to date |
|
| Avoca (Steuben Co.) | 0 | 0 | 0 | 1 | 6 | 1139.5 | |
| Avon (Livingston Co.) | NA | NA | NA | NA | NA | 1432.0 | |
| Baldwinsville (Onondaga Co.) | 3 | 1 | 0 | 4 | 45 | 1363.6 | |
| Batavia (Genesee Co.) | 1 | 1 | 6 | 0 | 24 | 1029.4 | |
| Belfast (Allegany Co.) | 0 | 2 | 0 | 0 | 2 | 1178.0 | |
| Bellona (Yates Co.) | 0 | 0 | 0 | 4 | 34 | 1447.4 | |
| Eden (Erie Co.) | 2 | 0 | 2 | 15 | 122 | 1241.1 | |
| Farmington (Ontario Co.) | 0 | 0 | 0 | 0 | 0 | 1274.7 | |
| Hamlin (Monroe Co.) | NA | NA | NA | NA | NA | 1296.9 | |
| Kennedy (Chautauqua Co.) | 4 | 0 | 0 | 6 | 5 | 1138.3 | |
| King Ferry (Cayuga Co.) | 0 | 0 | 0 | 8 | NA | 1311.2 | |
| Kirkville (Madison Co.) | 18 | 7 | 3 | 0 | 3 | 1360.1 | |
| LeRoy (Genesee Co.) | NA | NA | NA | NA | NA | 1269.1 | |
| Oswego (Oswego Co.) | 0 | 0 | 0 | 0 | 21 | 1429.0 | |
| Owego (Tioga Co.) | 0 | 0 | 0 | 0 | 0 | 1206.0 | |
| Pavilion (Genesee Co.) | 0 | 0 | 0 | NA | 38 | 1035.8 | |
| Penn Yan (Yates Co.) | 1 | 0 | 0 | 0 | 32 | 1413.2 | |
| Plessis (Jefferson Co.) | 3 | 0 | 0 | 14 | 38 | 1265.0 | |
| Preble (Cortland Co.) | 4 | 1 | NA | 17 | 23 | 1280.5 | |
| Ransomville (Niagara Co.) | 0 | 0 | 7 | 0 | 12 | 1422.4 | |
| Seneca Castle (Ontario Co.) | 0 | 0 | 0 | 5 | 29 | 1324.8 | |
| Sherwood (Cayuga Co.) | 1 | 0 | 0 | 8 | 0 | 1311.2 | |
| Spencerport (Monroe Co.) | 0 | 4 | 4 | 2 | 0 | 1432.0 | |
| Waterport (Orleans Co.) | NA | NA | NA | NA | NA | 1306.0 | |
| Williamson (Wayne Co.) | 0 | 0 | 0 | 0 | 0 | 1231.3 | |
| ECB – European Corn Borer CEW – Corn Earworm FAW – Fall Armyworm WBC – Western Bean Cutworm DD – Degree Day (base 50F) accumulation since May 1st NA – not available |
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| trap catches for the week of 7.19.16 – 7.26.16 |
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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 | 1139.5 | |
| Amsterdam (Fulton Co.) | 3 | 0 | 0 | 0 | 3 | 1452.5 | |
| Athens (Greene Co.) | 0 | 2 | 0 | 1 | 8 | 1525.8 | |
| Clifton Park (Saratoga Co.) | 3 | 0 | NA | NA | 2 | 1452.5 | |
| Feura Bush (Albany Co.) | 3 | 0 | 0 | 0 | 3 | 1303.4 | |
| Florida (Orange Co.) | 1 | 0 | 0 | 2 | 0 | 1454.6 | |
| Greenwich (Washington Co.) | 3 | 0 | 0 | 0 | 4 | 1334.4 | |
| Kinderhook (Columbia Co.) | 0 | 0 | 1 | 20 | 7 | 1402.9 | |
| Peru (Clinton Co.) | 0 | 0 | 0 | 1 | 2 | 1255.9 | |
| Plattsburgh (Clinton Co.) | 0 | 0 | 0 | 4 | 36 | 1254.9 | |
| Salem (Washington Co.) | 1 | 0 | 0 | 1 | 3 | 1334.4 | |
| Schoharie (Schoharie Co.) | NA | NA | NA | NA | NA | 1325.0 | |
| Stone Ridge (Ulster Co.) | 6 | 1 | 0 | 0 | 0 | 1139.5 | |
| ECB – European Corn Borer CEW – Corn Earworm FAW – Fall Armyworm WBC – Western Bean Cutworm DD – Degree Day (base 50F) accumulation since May 1st NA – not available |
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| trap catches for the week of 7.19.16 – 7.26.16 |
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