European Corn Borer Survey Results, Fall 2001
(Ron Blackwell)
Region*
Borer Entries/ Tassel1,2
Borer Entries/ Above Ear Zone1,2 Borer Entries/ Ear Zone1,2 Borer Entries/ Below Ear Zone1,2 Borer Entries/ Ear Shank1,2 Total Borer Entries/ Plant1 Overwintering Larvae/ Plant3
SW
0.00
0.10
0.09
0.04
0.03
0.26
0.20
SE
0.00
0.07
0.27
0.18
0.08
0.60
0.28
SWC
0.00

0.11

0.13
0.06
0.02
0.31
0.02
SEC
0.01
0.08
0.23
0.08
0.04
0.43
0.17
WC
0.01
0.49
0.90
0.29
0.28
1.97
0.84
C

0.01

0.22
0.33
0.25
0.09
0.90
0.20
EC
0.00
0.27
0.35
0.19
0.11
0.92
0.42
NW
0.00
0.83
1.72
1.26
0.60
4.41
1.58
NE
0.00
0.32
0.68
0.58
0.23
1.81
0.74
Avg.
0.00
0.28
0.52
0.32
0.16
1.29
0.49

*Five or six fields were surveyed per region.
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 diseected/field.