Nineteen sites reported this week. Only five sites reported European corn borer-E (ECB-E) and seven sites had ECB-Z. Corn earworm (CEW) was reported from 6 sites with three sites requiring a 5 or 6 day spray interval (see table below). Fall armyworm (FAW) numbers continue to increase at certain sites with one site, Pavilion, catching a total of 72 moths. Ten sites reported Western bean cutworm (WBC), but overall numbers continue to decrease.

The graph below shows the average number of moths caught per week throughout the season. From this graph you can see that FAW (red line) peaked in late July and is now showing a second peak. All other moths are on the decline.

Average sweet corn trap catches for all reporting sites from 5.20.14 to 8.26.14.

Average sweet corn trap catches for all reporting sites from 5.20.14 to 8.26.14.

 

I have received several reports of FAW damage and have seen feeding damage in several of the fields that I scouted. Where FAW are being caught, a tassel emergence scout in late plantings is still a good idea, as some years we see heavy FAW infestations in the emerging tassels (see photos below) that may have time to get into developing ears before silk sprays for CEW.

 

Location ECB-E ECB-Z CEW FAW WBC Total WBC
to date
Avoca (Steuben Co.) NA NA NA NA NA 17
Avon (Livingston Co.) NA NA NA NA NA 84
Baldwinsville (Onondaga Co.) 2 0 2 0 5 34
Batavia (Genesee Co.) 0 0 1 1 3 63
Bellona (Yates Co.) NA NA NA NA NA 17
Eden (Erie Co.) 0 0 1 37 1 480
Farmington (Ontario Co.) 0 0 0 0 0 4
Hamlin (Monroe Co.) 1 2 6 0 8 16
Kennedy (Chautauqua Co.) 0 0 0 29 0 131
King Ferry (Cayuga Co.) 0 1 1 19 1 16
Kirkville (Madison Co.) NA NA NA NA NA 44
LeRoy (Genesee Co.) 2 1 0 0 0 16
Lockport (Niagra Co.) 1 0 0 1 0 9
Oswego (Oswego Co.) 0 1 0 0 1 84
Owego (Tioga Co.) 0 0 0 0 0 2
Pavilion (Genesee Co.) 0 3 0 72 0 147
Penn Yan (Yates Co.) 0 0 0 2 1 10
Plessis (Jefferson Co.) 0 0 0 0 0 161
Preble (Cortland Co.) 0 0 0 0 2 37
Seneca Castle (Ontario Co.) 8 1 0 1 1 14
Sherwood (Cayuga Co.) 0 0 0 0 0 0
Spencerport (Monroe Co.) 0 4 5 0 0 12
Waterport (Orleans Co.) 0 0 0 0 1 31
Williamson (Wayne Co.) NA NA NA NA NA 20
ECB – European Corn Borer
CEW – Corn Earworm
FAW – Fall Armyworm
WBC – Western Bean Cutworm
NA – not available
trap catches for the week of 8.19.14 – 8.26.14

 

 

cewtable