Transcript /abhps/downloads/1901.ppt

38
34
10
11
ECB Survey
2005
3
6
9
41
46
Ave % Infestation
40
38
8
16
32
9
12
22
23
35
55
15
61
26
8
7
9
42
37
22
35
39
33
52
23
11
34
32
30
46
31
5
3
40
18
3
44
20
41
Northwest
29%
Northeast
11%
West
35%
Central
23%
East
13%
20
West Southwest 32%
12
East Southeast
31%
Southwest
14%
Southeast
30%
State
24%
87
97
10
13
ECB Survey
2005
3
9
95
7
144
66
40
Ave ECB/100 plants
0
19
2
61
74
60
41
33
51
8
19
5
39
36
11
89
113
44
6
5
6
28
126
14 21
31
46
21
75
7
22
21
2
4
32
15
0
34
16
46
Northwest
74
Northeast
11
West
50
Central
27
East
26
West Southwest
53
East Southeast
32
Southwest
10
Southeast
26
State
34
0.29
0.34
0.52
0.16
0.34
2003
0.6
1999
1995
0.27
0.91
0.95
1.1
1.3
1.36
2.07
2.2
2.8
2.8
3.3
3.48
3.5
1991
1.24
1.6
1.7
1.7
1.55
1.4
1.3
1.2
1.04
1
1
0.52
0.7
1987
0.4
0.9
0.26
0.53
0.76
0
1983
1979
1975
0.4
0.3
0.6
0.6
1
1
1
1.2
2.5
1971
1967
1963
0.6
1.5
1.8
3
1959
0.7
0.8
0.8
1.3
2
1955
0.5
0.4
0.5
0.6
1.4
1.4
4.2
4.5
1951
1947
1.4
1.5
1.5
0.9
0.8
1
1943
Avg. ECB/Stalk
Summary of European Corn Borer Fall
Surveys,
University of Illinois Extension, 1943 - 2005
4
Is ECB Economically Damaging
Year
% Injury non Bt
% Injury Bt
Date
E
M
L
E
M
L
’05
46
88
88
0
0
0
’04
13
21
45
0
0
0
’03
21
17
39
0
0
0
Average
26
42
57
E- early 4/7-11
M-mid 4/28-5/8
L-late 5/20-28
Bushel advantage for Bt
Plant date
Year
early mid late
’05
0
6
13
’04
7
5
18
’03
-1
5
2
E- early 4/7-11
M-mid 4/28-5/8
L-late 5/20-28
Corn Borer Control
• YGCB, Herculex 1, scout and spray
• Herculex provides protection against ecb,
cew, wbc, bcw, faw
• YGCB provides protection against ecb,
cew, faw, stalk borer