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Table 5 Reduction percentages of Tuta absoluta infestation treated with the most potent insecticides

From: Comparative toxicity of new insecticides generations against tomato leafminer Tuta absoluta and their biochemical effects on tomato plants

Insecticides

Rate of application (Cm3/F)

Before-spray

Reduction (%) at indicated duration after application (mean ± SD)

Average reduction %

Initial effect

Residual effect

 

Alive larvae (AL)

% Infestation

1 day

3 days

5 days

7 days

 

AL

%R

AL

%R

AL

%R

AL

%R

 

Challenger

410.0

20.33 ± 3.2

67.77 ± 3.2

9.33 ± 1.5b

60.65 ± 1.5c

4.67 ± 0.6b

78.67 ± 0.6b

3.67 ± 0.6b

84.74 ± 0.5b

1.67 ± 0.6b

91.27 ± 0.5

84.89b

Coragen

6.0

18.33 ± 3.1

61.10 ± 3.1

4.67 ± 0.6cd

78.18 ± 1.5b

1.67 ± 1.5b

91.55 ± 1.6a

0.67 ± 1.2cd

96.92 ± 1.2a

0.33 ± 0.6b

98.06 ± 0.6

95.51a

Emperor

200.0

24.67 ± 7.8

82.23 ± 1.5

2.00 ± 1.0d

93.05 ± 1.0a

1.00 ± 1.0b

96.23 ± 1.0a

0.00 ± 0.0d

100.0 ± 0.0a

0.00 ± 0.0b

100.00±0.0

98.74a

Radiant

25.0

19.33 ± 2.1

64.43 ± 2.1

7.67 ± 1.5bc

66.00 ± 1.6c

4.00 ± 1.0b

80.77 ± 1.0b

2.67 ± 0.6bc

88.33 ± 0.5b

0.67 ± 0.6b

96.33±0.5

88.48b

Vapcomic

270.0

21.33 ± 7.8

71.10 ± 7. 8

5.00 ± 2.0cd

79.91 ± 2.0b

4.33 ± 0.6b

81.12 ± 0.5b

3.67 ± 1.2b

85.46 ± 1.1b

0.67 ± 1.2b

96.67 ± 0.6

87.75b

Control

–

22.00 ± 3.0

73.33 ± 3.0

25.67 ± 2.5a

–

23.67 ± 7.8a

–

26.00 ± 3.0a

–

20.67 ± 4.04a

-

-

LSD 0.05

 

NS

NS

3.11

11.93

5.73

8.56

2.55

6.38

3.14

NS

5.28

  1. (%R= Reduction percentages of infestation; L.S.D0.05 least significant difference at 0.05 level of probability; N.S not significant difference at 0.05 level of probability; Means accompanied by the same letter in a column are not significantly different at 0.05 level of probability. AL= Alive Larvae)