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Table 2 Mean lethal time (LT) for different concentrations of cypermethrin+dimethoate (Cydim super) and age of residues

From: Acute and residual concentration-dependent toxicities of some selected insecticides to adult Bactrocera invadens Drew, Tsuruta and White (Diptera: Tephritidae)

  

Mean ± S. E. lethal time (min)

Age of residue

Concentration (ml L−1)

LT50

LT90

FTP

0.0

> 2880.00 ± 0.00

> 2880.00 ± 0.00

1.6

66.33 ± 8.78

128.00 ± 20..81

2.3

62.00 ± 15.52

103.00 ± 14.18

3.00

29.67 ± 13.68

73.67 ± 41.67

LSD (P < 0.05)

f-value

p

50.22

10238.18

< .001

56.24

3257.96

< .001

3-DOTP

0.0

> 2880.00 ± 0.00

> 2880.00 ± 0.00

1.6

127.00 ± 54.20

194.00 ± 72.00

2.3

66.00 ± 17.40

105.33 ± 27.51

3.0

44.67 ± 14.66

60.33 ± 18.46

LSD (P < 0.05)

f-value

p

96.00

2270.89

< .001

129.19

1217.66

< .001

6-DOTP

0.0

> 2880.00 ± 0.00

> 2880.00 ± 0.00

1.6

144.33 ± 55.47

199.67 ± 129.66

2.3

74.33 ± 17.32

94.33 ± 21.30

3.0

42.67 ± 9.74

62.00 ± 17.62

LSD (P < 0.05)

f-value

p

96.10

2248.90

< .001

114.30

1555.47

< .001

  1. Legend: FTP freshly treated panels, 3-DOTP 3-day-old-treated panels, 6-DOTP 6-day-old-treated panels