NY Sweet Corn Trap Network Report 8.16.22

Twenty-seven sites reported this week. European corn borer (ECB)- E was caught at five sites and ECB-Z was caught at eight sites. The hybrid ECB was caught at two of the seven sites trapping for it:  Hurley (2) and Penn Yan (1). Nineteen sites reported corn earworm (CEW) catches this week with sixteen sites high enough to be on a 4, 5, or 6 day spray schedule (see table at bottom of post). Fall armyworm (FAW) was caught at seventeen sites and Western bean cutworm (WBC) was caught at twenty-four sites.

Often at this time of year we are catching CEW at most locations and in high enough numbers that other moths will be controlled by the spray timing needed for CEW. In the absence of CEW, continue to scout for ECB egg masses, and ECB and FAW larvae and feeding damage, using a threshold of 15% infested plants in tassel emergence stage fields and 5% in silk stage fields.

ECB development based on accumulated degree days (Base 86/50).

Location ECB-E ECB-Z CEW FAW WBC DD
Western NY trap Catch
Baldwinsville (Onondaga Co.) 0 0 17 5 2 1913
Batavia (Genesee Co.) 0 0 0 0 3 1911
Bellona (Yates Co.) 1 2 2 10 11 1937
Collins (Erie Co.) NA NA NA NA NA 1847
Eden (Erie Co.) 0 0 1 5 6 1890
Farmington (Erie Co.) 0 0 0 1 3 1979
Geneva (Ontario Co.) 1 1 19 0 3 1927
Hamlin (Orleans Co.) 0 6 109 35 17 1878
King Ferry (Cayuga Co.) 0 0 5 104 3 1856
Kirkville (Madison Co.) NA NA NA NA NA 1954
LeRoy (Genesee Co.) 4 7 43 3 86 1899
Lyndonville (Orleans Co.) 0 2 1 0 25 1867
Oswego (Oswego Co.) 0 0 0 0 15 1774
Panama (Chautauqua Co.) 3 0 3 0 2 1631
Penn Yan (Yates Co.) 0 7 7 0 0 1888
Portville (Cattaraugus Co.) 1 0 5 3 5 1670
Preble (Cortland Co.) NA NA NA NA NA 1633
Ransomville (Niagara Co.) NA NA NA NA NA 1982
Seneca Castle (Ontario Co.) 0 0 0 0 0 1883
Sherwood (Cayuga Co.) 0 0 0 97 3 2012
Williamson (Wayne Co.) 0 0 41 0 27 1720
Eastern NY trap Catch
Accord (Ulster Co.) 0 0 27 34 0 2087
Afton (Chenango Co.) 0 1 1 2 1 1714
Feura Bush (Albany Co.) 0 1 17 1 2 2026
Florida (Orange Co.) NA NA NA NA NA 2127
Greenwich (Washington Co.) NA NA NA NA NA 1981
Hurley (Ulster Co.) 0 0 15 6 2 2086
Kinderhook (Columbia Co.) 0 0 62 12 2 2028
Melrose (Rensselear Co.) NA NA NA NA NA 2002
Peru (Clinton Co.) 0 0 0 1 33 1841
Plattsburgh (Clinton Co.) 0 0 0 1 103 1887
Plessis (Jefferson Co.) 0 0 3 0 20 1845
South Colton (St. Lawrence Co.) NA NA NA NA NA 1582
Stone Ridge (Ulster Co.) NA NA NA NA NA 2082
Ticonderoga (Essex Co.) 0 0 0 4 10 1937
Tivoli (Dutchess Co.) 0 0 34 0 1 2080
Unadilla (Delaware Co.) NA NA NA NA NA 1707
ECB – European Corn Borer
CEW – Corn Earworm
FAW – Fall Armyworm
WBC – Western Bean Cutworm
NA – not available
DD – Degree Day (base 86/50) April 1st accumulation Climate Smart Farming
trap catches for the week of 8.9.22 – 8.16.22

Interactive Sweet Corn Pheromone Trapping Network Map

 



Dry Bean Western Bean Cutworm Alert
8.16.22

This year we are monitoring 12 WBC traps placed next to dry bean fields. Dry bean growers should scout adjacent corn for WBC eggs and larvae when cumulative trap catch reaches 50 moths. All sites except Pavilion have reached 50 cumulative moths. Peak flight for most of the sites happened last week (numbers in red below). All dry bean growers should begin scouting pods for WBC feeding about 10 days after peak flight regardless of cumulative trap catch, and should continue to scout for three weeks, especially if damage has been seen in recent years.

Check 10 random spots in a field, 5 plants per spot. Inspect all the pods on the plants looking for holes. Surface feeding can be caused by other insects. WBC will mine directly into the pod and will often feed on the seed inside. European corn borer will also feed inside the pod and would most likely still be present. If there is damage going directly into the pod and seed but no larva present, it is quite possibly WBC. During the day WBC larva are not actively feeding in the pod, instead they drop to the soil and will remain there until night. Fresh damage will be green, not brown.

This project is funded by the NYS Dry Bean Industry.

Dry Bean Location 7.5.22 7.12.22 7.19.22 7.26.22 8.2.22 8.9.22 8.16.22 Cumulative WBC
Alexander (Genesee Co.) 0 1 11 18 23 9 10 72
Avoca Hill (Steuben Co.) 0 1 10 31 53 23 6 124
Avoca Valley (Steuben Co.) 0 2 4 19 28 23 12 88
Caledonia (Livingston Co.) 1 3 8 25 36 36 14 123
Churchville (Monroe Co.) 0 3 30 36 31 24 11 135
LeRoy (Genessee Co.) 0 2 67 92 95 64 16 336
Pavilion (Genesee Co.) 0 1 5 4 3 5 3 21
Penfield (Monroe Co.) 3 2 26 94 120 85 32 362
Penn Yan 1 (Yates Co.) 1 2 6 19 29 20 9 76
Penn Yan 2 (Yates Co.) 0 0 12 7 31 11 13 74
Wayland (Steuben Co.) 1 1 4 34 90 47 NA 177
Wyoming (Wyoming Co.) 0 3 24 13 13 1 1 55
Western Bean Cutworm trap counts by date
NA – not available