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Table 6 Insecticidal activity of solvent extracts from Polygonum hydropiper against Tribolium castaneum and Rhyzopertha dominica

From: Chemical profiling, antimicrobial and insecticidal evaluations of Polygonum hydropiper L

Samples/Fractions

Total Insects

Conc. (μg/ml)

Tribolium castraneum killed

Percent mortality

LC50 μg/ml

Rhyzopertha dominica Killed

Percent mortality

LC50 μg/ml

Crude (Ph.Cr)

30

125

12.00 ± 0.57

40.00***

255

19.00 ± 0.00

63.33**

25

30

250

14.33 ± 0.66

47.76***

21.00 ± 1.15

70.00**

30

500

18.33 ± 0.33

61.10**

22. 67 ± 0.88

75.56**

n-Hexane (Ph.Hex)

30

125

12.66 ± 0.33

42.20***

360

13.00 ± 0.57

43.33***

190

30

250

15.66 ± 0.66

62.20**

16.66 ± 0.33

55.53***

30

500

18.67 ± 0.33

62.23**

19.00 ± 0.58

63.33**

Ethyl acetate (Ph.EtAc)

30

125

17.66 ± 0.66

58.86***

80

15.33 ± 0.88

51.10***

110

30

250

20.00 ± 0.57

66.66**

23.00 ± 1.15

76.66**

30

500

24.00 ± 0.57

80.00*

26.33 ± 0.33

87.76*

Butanol (Ph.Bt)

30

125

21.33 ± 0.33

71.10**

20

19.66 ± 1.88

65.53**

57

30

250

24.00 ± 0.57

80.00*

25.00 ± 1.15

83.33*

30

500

26.67 ± 0.89

88.90*

28.00 ± 0.00

93.33

Chloroform (Ph.Chf)

30

125

4.66 ± 0.88

15.53***

>500

5.00 ± 0.57

16.55***

>500

30

250

6.33 ± 0.33

21.10***

9.00 ± 1.15

30.00***

30

500

8.67 ± 0.89

28.90***

11. 67 ± 0.88

38.90***

Aqueous (Ph.Aq)

30

125

14.00 ± 0.00

46.66***

130

9.66 ± 0.88

32.20***

300

30

250

21.00 ± 1.15

70.00**

14.00 ± 0.57

46.66***

30

500

23.33 ± 1.21

77.77**

18.33 ± 0.33

61.10**

(Saponins) Ph.Sp

30

125

15.33 ± 0.88

51.10***

110

21.33 ± 1.20

71.10**

28

30

250

22.00 ± 0.00

73.33**

24.00 ± 0.00

80.00*

30

500

25.00 ± 0.00

83.33*

27.00 ± 0.00

90.00

Positive Control

30

125

24.00 ± 0.00

80.00

15

24.66 ± 0.33

82.20

9

30

250

27.66 ± 0.88

92.20

27.33 ± 0.88

91.10

30

500

30.00 ± 0.00

100.00

30.00 ± 0.00

100.00

Negative Control

30

---

0 ± 0.00

0 ± 0.00

---

0 ± 0.00

0 ± 0.00

 
  1. Data was represented as mean ± SEM (n = 3) of three independent experimental readings. Positive control: Permethrin. Negative Control: solvents used for dissolution. Values significantly different when compared to standard drug *: 0.05, **: 0.01 and ***: 0.001 at 90% confidence interval