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Table 2. Larvicide of green and roasted C. arabica and CuNPs.

Substances

No Larvae*

Concentration (ppm)

% Mortality

Mean±SD

LC50

LC90

Χ2

(df - 3)

Green C. arabica

20

100

48.3±1.53a

124.52

456.55

6.48

200

58.3±2.08b

300

76.6±2.52c

400

88.3±1.15c, d

500

96.6±0.58d

Rosted C. arabica

20

100

65.0±1.00a

73.45

371.49

4.61

200

71.6±1.53b

300

83.3±2.08c

400

91.6±1.53c, d

500

100.0±0.00d

 

 

CuNPs

 

20

2

20±7.29c

5.79

36.59

1.57

12

73.8±5.41b

25

87.5±6.5a

50

91.3±4.46a

100

96.3±2.07a

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X2 = Chi-square value. * Three replicates= 20 mosquito larvae each. Mean±SD superscripted by the same letter in the same column indicates not significant differences according to LSD at 0.05, the line is a good fit, and the data are significantly homogenous.