WNY Sweet Corn Trap Network Report 8.6.13

European corn borer (ECB) trap catches are in the single digits at all locations except Farmington where 20 ECB-E moths were caught. Corn earworm (CEW) numbers are variable and were caught at 7 locations this week. Some locations have counts justifying either a 5 or 6 day spray schedule (see chart below). Only two sites reported fall armyworm (FAW) but one of those sites had a trap catch of 12 for the week.

Western bean cutworm (WBC) was caught at 18 of the 20 sites reporting, with a high count of 79. It appears that WBC numbers are still increasing (see graph below). Still no WBC eggs seen in the two fields I scouted. I also received reports from three other people all finding high WBC moths but no eggs observed in the field. The degree day accumulation (May 1st, base 50°F) for sweet corn trap network sites ranges from 1303-1707 with an average of 1510. Most areas are just above 50% WBC moth emergence based on accumulated degree days (for local population).

Below is a graphical representation of moth emergence for the season. All reporting sites have been combined to show the general trend for the 5 moth species for western NY from May 21 to August 6 (please see the map for site locations). Numbers for ECB-Z have been low for most of the season. ECB-E had a small peak early on and a second peak the third week of July. WBC are still peaking with a combined trap catch for all reporting sites of 276 for this week.

Total sweet corn trap catches for all reporting sites from 5.21.13 to 8.6.13.

 

 

 

 

 

 

 

 

 

 

 

Location ECB-E ECB-Z CEW FAW WBC
Avoca (Steuben Co.) NA NA NA NA NA
Avon (Livingston Co.) 0 0 0 0 16
Baldwinsville (Onondaga Co.) 0 0 0 0 10
Batavia (Genesee Co.) 1 0 1 0 8
Bellona (Yates Co.) 2 0 0 12 51
Eden (Erie Co.) 0 0 2 0 0
Farmington (Ontario Co.) 20 1 0 0 1
Hamlin (Monroe Co.) 4 5 4 0 7
Interlaken (Seneca Co.) 1 1 1 0 20
Kennedy (Chautauqua Co.) 0 0 0 0 4
King Ferry (Cayuga Co.) 4 1 3 0 1
Kirkville (Madison Co.) 2 0 0 0 3
LeRoy (Genesee Co.) 0 4 5 0 11
Lockport (Niagra Co.) 0 0 0 0 3
Oswego (Oswego Co.) NA NA NA NA NA
Owego (Tioga Co.) 0 2 0 0 0
Penn Yan (Yates Co.) 4 0 0 3 18
Pike (Wyoming Co.) NA NA NA NA NA
Plessis (Jefferson Co.) 0 0 0 0 79
Preble (Cortland Co.) 0 0 0 0 5
Sherwood (Cayuga Co.) NA NA NA NA NA
Spencerport (Monroe Co.) 0 0 0 0 4
Waterport (Orleans Co.) 0 0 0 0 8
Williamson (Wayne Co.) 0 3 4 0 27
ECB – European Corn Borer
CEW – Corn Earworm
FAW – Fall Armyworm
WBC – Western Bean Cutworm
NA – not available
trap catches for the week of 6.18.13 – 6.25.13

 

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