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Table 3 Efficacy of nematode isolates and concentrations mortality rate on fifth instar of cotton leafworm larvae

From: Biological control potential of local entomopathogenic nematodes against the different stage larvae of cotton leafworm Spodoptera littoralis (Boisduval) (Lepidoptera: Noctuidae)

Nematode

Concentrations

 

50 IJs/ml

100 IJs/ml

200 IJs/ml

Control

 

Steinernema carpocapsae

(Tokat-Bakışlı05)

88.75 ± 3.55

a*

B**

93.27 ± 2.91

a

B

100.00 ± 0.00

a

A

3.33 ± 0.00

F = 5.51, p = 0.01

Steinernema feltiae

(Tokat-Emir)

87.63 ± 3.68

a

A

89.87 ± 3.37

a

A

92.12 ± 2.25

b

A

1.11 ± 1.11

F = 0.19, p = 0.83

Heterorhabditis bacteriophora

(TOK-20)

17.56 ± 2.46

c

B

28.87 ± 4.01

b

B

49.28 ± 7.87

c

A

2.22 ± 1.11

F = 9.04, p = 0.00

Heterorhabditis bacteriophora

(11 KG)

72.96 ± 4.72

b

A

79.76 ± 6.29

a

A

87.62 ± 4.03

b

A

0.00 ± 0.00

F = 2.17, p = 0.14

 

F = 42.83, p = 0.00

F = 24.56, p = 0.00

F = 27.37, p = 0.00

  
  1. *Means within column bearing the same letter are not significantly different (Duncan’s test, p > 0.05)
  2. **Means within lines bearing the same letter are not significantly different (Duncan’s test, p > 0.05)