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 |
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trap catches for the week of 8.12.14 – 8.19.14 |