June 11, 2019

NY Sweet Corn Trap Network Report 6.11.19

Seventeen sites reporting this week. European corn borer (ECB)-E was caught at six sites with high counts of 20 and 27 in Hurley and Seneca Castle. ECB-Z was caught at four sites. Five sites caught corn earworm (CEW).  Fall armyworm (FAW) was caught at two sites and Western bean cutworm (WBC) was caught at two sites.

ECB eggs and larvae were found this week in fields with high trap catches. For fields that are in early tassel emergence, scout for any signs of eggs, larvae and feeding damage in the emerging tassel. Separate the leaves and look down into the tassel for any signs of feeding, frass or larvae. The treatment threshold at tassel emergence is 15% infested plants. ECB egg masses are usually located on the underside of the leaf along the midrib. The egg mass consists of 10-35 flattened eggs that overlap like fish scales. Eggs take approximately 100 base 50 degree days to hatch. Egg masses will change from white to cream to black as they age. When they appear black they are in the “black head” stage and will most likely hatch with 24 hours (see photo).

Location ECB-E ECB-Z CEW FAW WBC DD to Date
Accord (Ulster Co.) NA NA NA NA NA 693
Amsterdam (Fulton Co.) NA NA NA NA NA 503
Athens (Greene Co.) NA NA NA NA NA 624
Attica (Wyoming Co.) 0 0 0 0 0 498
Avon (Livingston Co.) NA NA NA NA NA 512
Baldwinsville (Onondaga Co.) NA NA NA NA NA 514
Basom (Genesee Co.) NA NA NA NA NA 530
Batavia (Genesee Co.) 0 0 5 0 0 510
Bellona (Yates Co.) NA NA NA NA NA 525
Carlton (Orleans Co.) 0 0 0 0 0 452
Eagle Bridge (Washington Co.) 0 0 0 0 0 550
Eden (Erie Co.) 0 0 32 0 0 525
Farmington (Ontario Co) 1 0 0 0 0 529
Feura Bush (Albany Co.) 3 0 NA 0 0 645
Florida (Orange Co.) 0 0 0 4 1 748
Geneva (Ontario Co.) NA NA NA NA NA 502
Greenwich (Washington Co.) 0 0 NA 0 2 551
Hamlin (Monroe Co.) NA NA NA NA NA 455
Hurley (Ulster Co.) 20 15 0 0 0 645
Kennedy (Chautauqua Co.) NA NA NA NA NA 547
Kinderhook (Columbia Co.) 0 3 0 0 0 646
King Ferry (Cayuga Co.) NA NA NA NA NA 497
Kirkville (Madison Co.) NA NA NA NA NA 548
Lyndonville (Orleans Co.) NA NA NA NA NA 452
New Paltz (Ulster Co.) NA NA NA NA NA 729
Oswego (Oswego Co.) NA NA NA NA NA 379
Owego (Tioga Co.) NA NA NA NA NA 567
Penn Yan (Yates Co.) 1 0 1 0 0 513
Peru (Clinton Co.) 0 0 0 0 0 407
Plattsburgh (Clinton Co.) 0 0 0 1 0 443
Plessis (Jefferson Co.) NA NA NA NA NA 398
Portville (Cattaraugus Co.) 0 0 1 0 0 544
Preble (Cortland Co.) NA NA NA NA NA 401
Ransomville (Niagara Co.) NA NA NA NA NA 455
Schaghticoke (Rensselear Co.) 0 0 NA 0 0 631
Seneca Castle (Ontario Co.) 27 1 0 0 0 477
Sharon Springs (Schoharie Co.) NA NA NA NA NA 519
Sherwood (Cayuga Co.) NA NA NA NA NA 486
South Colton (St. Lawrence Co.) NA NA NA NA NA 327
Stone Ridge (Ulster Co.) NA NA NA NA NA 625
Tivoli (Dutchess Co.) 1 1 1 0 0 702
Williamson (Wayne Co.) NA NA NA NA NA 410
ECB – European Corn Borer
CEW – Corn Earworm
FAW – Fall Armyworm
WBC – Western Bean Cutworm
NA – not available
DD – Degree Day (base 86/50) accumulation Climate Smart Farming
trap catches for the week of 6.4.19 – 6.11.19