Thirteen sites reporting this week. European corn borer (ECB-E) was found at three sites with Seneca Castle once again having the highest trap catch with 73 moths. ECB-Z was caught at five sites. We also have our first report of corn earworm (CEW) at the Eden site in Erie County and one fall armyworm (FAW) in Avoca. Only a few western bean cutworm (WBC) traps have been set but no moths caught.
| Location | ECB-E | ECB-Z | CEW | FAW | WBC | Total WBC to date |
| Avoca (Steuben Co.) | 0 | 0 | 0 | 1 | NA | NA |
| Avon (Livingston Co.) | NA | NA | NA | NA | NA | NA |
| Baldwinsville (Onondaga Co.) | NA | NA | NA | NA | NA | NA |
| Batavia (Genesee Co.) | 0 | 1 | 0 | 0 | NA | NA |
| Bellona (Yates Co.) | NA | NA | NA | NA | NA | NA |
| Eden (Erie Co.) | 0 | 10 | 2 | 0 | NA | NA |
| Farmington (Ontario Co.) | 0 | 1 | 0 | 0 | 0 | 0 |
| Hamlin (Monroe Co.) | NA | NA | NA | NA | NA | NA |
| Kennedy (Chautauqua Co.) | 0 | 3 | 0 | 0 | 0 | 0 |
| King Ferry (Cayuga Co.) | NA | NA | NA | NA | NA | NA |
| Kirkville (Madison Co.) | 1 | 0 | 0 | 0 | NA | NA |
| LeRoy (Genesee Co.) | NA | NA | NA | NA | NA | NA |
| Lockport (Niagra Co.) | 0 | 1 | 0 | 0 | NA | NA |
| Oswego (Oswego Co.) | NA | 0 | 0 | 0 | 0 | 0 |
| Owego (Tioga Co.) | 0 | 0 | 0 | 0 | NA | NA |
| Pavilion (Genesee Co.) | NA | NA | NA | NA | NA | NA |
| Penn Yan (Yates Co.) | 4 | 0 | 0 | 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.) | 73 | 11 | 0 | 0 | 0 | 0 |
| Sherwood (Cayuga Co.) | NA | NA | NA | NA | NA | NA |
| Spencerport (Monroe Co.) | NA | NA | NA | NA | NA | NA |
| Waterport (Orleans Co.) | 0 | 0 | 0 | 0 | NA | NA |
| Williamson (Wayne Co.) | 0 | 0 | 0 | 0 | NA | NA |
| 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 6.10.14 – 6.17.14 |
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ECB-E flight peaks at 631 degree days (modified base 50). All but two of the sites, Batavia and Kennedy, have reached the peak moth flight according to degree day models. For sites catching CEW the recommended spray intervals can be found at the bottom of this post. Usually CEW will be controlled with sprays for ECB, but since ECB numbers are low in most places, sites that are catching CEW may need to spray.
Feeding damage as well as egg masses of ECB were observed in some early tasseling corn (see photos below). As well as symptoms of Stewart’s wilt disease. Stewart’s wilt is vectored by flea beetles, if you have varieties planted that are susceptible to Stewart’s wilt you will want to scout for flea beetles from plant emergence to mid whorl. The threshold is 6 flea beetles per 100 plants.
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- Feeding damage. Photo: Darcy Telenko
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- ECB egg mass. Photo: Darcy Telenko, CVP
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- Stewart’s Wilt Disease. Photo: Meg McGrath, Cornell University
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- Flea Beetle. Photo: Russ Ottens, University of Georgia
