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Sweet Corn Pheromone Trap Network

for Western NY - 2010

This is a seasonal scouting report giving growers in the Western New York area information on the presence of sweet corn pests and recommendations on scouting and thresholds. The report is written by Abby Seaman, NYS IPM's Area Extension Educator for Vegetables.

For 6/8/10

European corn borer trap catches are mixed this week.  Up at some locations, slightly down at others.  According to degree days forecasts, peak flight would have occurred over the past week at many locations.  Heavy rainfall may have inhibited moth flights and reduced trap catches.  Window pane damage on the bases of leaves emerging from the whorl, and very small larvae were found in field scouted this morning.  The field was just approaching the tasseling stage.  No corn earworms have been caught yet this year.

Fields not yet in or just approaching the tassel emergence stage can be scouted and treated, if over threshold, at tassel emergence.  Fields that were already tasseling when the flight started should be scouted for egg masses to determine the need for a spray, or if you're not confident about finding egg masses, sprayed at weekly intervals while the flight continues.  Egg mass hatching will be slower while the weather remains cool.  ECB eggs require 100 degree days (base 50) from oviposition to hatch.  Degree day calculations for many locations may be found on the NEWA web site.

Trap catches for the week of 6/1-6/8:

Location
ECB-E
ECB-Z
CEW
FAW
Avoca (Steuben Co.)
0
0
NA
NA
Avon (Livingston Co.)
NA
NA
NA
NA
Baldwinsville (Onondaga Co.)
18
1
0
NA
Batavia (Genesee Co.)
0
4
0
NA
Bellona (Yates Co.)
23
1
NA
NA
Eden Z (Erie Co.)
0
21
0
NA
Farmington (Ontario Co.)
3
1
0
NA
Great Valley (Cattaraugus Co.)
NA
NA
NA
NA
Hamlin (Monroe Co.)
0
3
0
NA
Kennedy (Chautauqua Co.)
1
0
NA
NA
King Ferry (Cayuga Co.)
NA
NA
NA
NA
Kirkville (Madison Co.)
NA
NA
NA
NA
LeRoy (Genesee Co.)
NA
NA
NA
NA
Lockport (Niagara Co.)
0
15
0
NA
Medina (Orleans Co.)
0
5
0
NA
Owego (Tioga Co.)
1
0
0
NA
Penn Yan (Yates Co.)
0
5
NA
NA
Pike (Wyoming Co.)
NA
NA
NA
NA
Plessis (Jefferson Co.)
NA
NA
NA
NA
Spencerport (Monroe Co.)
0
19
0
NA
Williamson (Wayne Co.)
NA
4
0
NA