Nineteen sites reporting this week. Seven sites had European corn borer-E (ECB-E) and six sites had ECB-Z. Both corn earworm and fall armyworm numbers are up this week as compared to last week. CEW was reported at six sites, all six sites were high enough to require a 4, 5, or 6 day spray interval. Please see the chart at the bottom to determine the correct spray interval for your site. Fall armyworm (FAW) numbers were also up this week with 11 sites reporting trap catches. Western bean cutworm (WBC) numbers are down but the total number of sites reporting remains high at 17 sites.

For sites with high enough CEW trap catches, the recommended spray intervals for CEW should be adequate to control ECB, FAW and WBC.  But at sites where corn earworm are not being caught in high enough numbers to determine the spray schedule, you should scout fields in the late whorl stage through silking for ECB, FAW, and WBC eggs and larvae. Here is a link to a video on how to scout for WBC.

 

Location ECB-E ECB-Z CEW FAW WBC Total WBC
to date
DD
to date
Avoca (Steuben Co.) NA NA NA NA NA 17 1653
Avon (Livingston Co.) 0 0 3 23 5 84 1946
Baldwinsville (Onondaga Co.) NA NA NA NA NA 29 1957
Batavia (Genesee Co.) 2 0 2 1 5 60 1516
Bellona (Yates Co.) 23 0 0 13 1 17 2013
Eden (Erie Co.) 0 0 2 31 46 479 1804
Farmington (Ontario Co.) NA NA NA NA NA 4 1829
Hamlin (Monroe Co.) 1 2 4 1 8 8 1839
Kennedy (Chautauqua Co.) 0 1 0 5 7 131 1521
King Ferry (Cayuga Co.) 0 0 4 24 5 15 1888
Kirkville (Madison Co.) NA NA NA NA NA 44 2069
LeRoy (Genesee Co.) 2 0 0 0 5 16 1690
Lockport (Niagra Co.) 3 0 0 0 5 9 1731
Oswego (Oswego Co.) 0 0 0 3 20 83 1804
Owego (Tioga Co.) 0 0 0 0 2 2 1727
Pavilion (Genesee Co.) NA NA NA NA NA 147 1690
Penn Yan (Yates Co.) 0 1 0 1 2 9 1964
Plessis (Jefferson Co.) 0 0 0 1 19 161 1711
Preble (Cortland Co.) 0 0 0 2 0 35 1869
Seneca Castle (Ontario Co.) 1 1 0 0 3 13 1858
Sherwood (Cayuga Co.) 0 0 0 0 0 0 1888
Spencerport (Monroe Co.) 0 10 12 0 4 12 1946
Waterport (Orleans Co.) 0 0 0 0 7 33 1839
Williamson (Wayne Co.) 4 1 0 0 2 20 1741
ECB – European Corn Borer
CEW – Corn Earworm
FAW – Fall Armyworm
WBC – Western Bean Cutworm
NA – not available
DD – Degree Day (modified base 50F) accumulation
trap catches for the week of 8.12.14 – 8.19.14

 

 

cewtable