European Corn borer Survey Results, Fall 2004.
Region
Fields Surveyed
Borer Entries/ Tassel1,2
Borer Entries/ Above Ear Zone1,2
Borer Entries/ Ear Zone 1,2
Borer Entries/ Below Ear Zone1,2
Borer Entries/ Ear Shank 1,2
Total Borer Entries/Plants1
Overwintering Larvae/ Plant3
SW
6
0.01
0.10
0.16
0.18
0.08
0.52
0.07
SC
6
0.00
0.24
0.27
0.13
0.07
0.70
0.33
SE
6
0.01
0.13
0.14
0.03
0.01
0.33
0.12
WE
6
0.01
0.12
.014
0.09
0.11
0.47
0.10
C
6
0.01
0.06
0.08
0.05
0.08
0.28
0.03
EC
6
0.00
0.14
0.18
0.18
0.11
0.61
0.22
NW
6
0.00
.015
0.18
0.08
0.10
0.51
0.07
NC
6
0.00
0.08
0.11
0.13
0.05
0.37
0.13
NE
6
0.00
0.04
0.08
0.09
0.04
0.25
0.08
AVG.
0.00
0.12
0.15
0.11
0.07
0.45
0.13

1Counts made on 20 plants/ field

2Plant zones are as follows: Tassel; Ear Zone, includes 2 nodes above and 2 nodes below primary ear; Above Ear Zone, includes all nodes between tassel and ear zone; Below Ear Zone, includes all nodes between ground and ear zone; Ear Shank, includes primary ear only.

3Numbers based on 10 plants dissected/field.