© Benaki Phytopathological Institute
Antonatos & Emmanouel
46
Table 1.
Mortality % (Mean ± S.E.) of nymphs of
Calliptamus barbarus barbarus
when exposed for 48 hours to grapevine leaves treated with dif-
ferent insecticides.
Treatment
Day of trial
1
st
2
nd
3
rd
4
th
5
th
6
th
7
th
8
th
9
th
10
th
Spinosad
60,9 ± 9,0a 81,3 ± 7,5a 89,1 ± 6,4a 93,8 ± 4,1a 96,9 ± 2,1a 96,9 ± 2,1a 98,5 ± 1,6a 98,5 ± 1,6a 98,5 ± 1,6a 98,5 ± 1,6a
Imidacloprid
42,2 ± 4,7ab 53,1 ± 6,1b 65,6 ± 5,2b 73,4 ± 5,5b 78,1 ± 4,6b 81,3 ± 4,7b 85,9 ± 5,0ab 89,1 ± 5,0ab 89,1 ± 5,0ab 89,1 ± 5,0ab
Alpha cypermethrin 25,0 ± 7,5b 35,9 ± 10,1b 54,7 ± 10,3b 64,1 ± 9,0b 70,3 ± 7,1b 75,0 ± 6,7bc 75,0 ± 6,7bc 78,1 ± 6,1bc 79,7 ± 5,3bc 81,3 ± 4,7bc
Diflubenzuron
3,1 ± 2,1c
7,8 ± 4,1c 20,3 ± 8,2c 31,3 ± 10,6c 37,5 ± 10,3c 42,2 ± 12,7cd 48,4 ± 11,9cd 48,4 ± 11,9cd 51,6 ± 11,4cd 53,1 ± 11,5cd
Azadirachtin
1,6 ±1,6c
4,7 ± 2,3c
6,3 ± 2,4c 12,5 ± 2,4c 12,5 ± 2,4d 15,6 ± 3,1de 18,8 ± 4,7de 23,4 ± 3,7de 26,6 ± 3,7de 29,7 ± 4,7d
Control
3,1 ± 2,1c
4,7 ± 2,3c
9,4 ± 3,1c 9,4 ± 3,1c 9,4 ± 3,1d 9,4 ± 3,1e 12,5 ± 4,1e 14,1 ± 3,7e 15,6 ± 3,9e 15,6 ± 3,9e
Chi-square
36,49
36,47
35,39
35,38
37,22
34,4
35,29
35,39
35,25
35,05
df
5
5
5
5
5
5
5
5
5
5
P
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
Means of the same column followed by different letter differ significantly (Mann-Whitney U-test:
P
< 0.05)
