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Table 8 The mortality rate of third stage cotton leafworm larvae at different exposure times

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

Nematode

Time

48 h

72 h

96 h

 

Steinernema carpocapsae

(Tokat-Bakışlı05)

87.17 ± 4.83

a*

A**

92.02 ± 2.85

a

A

95.40 ± 1.82

a

A

F = 1.68,

p = 0.21

Steinernema feltiae

(Tokat-Emir)

86.44 ± 3.39

a

B

93.16 ± 2.96

a

AB

97.70 ± 1.52

a

A

F = 4.09,

p = 0.03

Heterorhabditis bacteriophora

(TOK-20)

33.31 ± 5.39

b

A

46.44 ± 8.16

b

A

54.04 ± 10.07

b

A

F = 1.53,

p = 0.24

Heterorhabditis bacteriophora

(11 KG)

46.88 ± 6.06

b

B

58.97 ± 3.82

b

AB

65.53 ± 3.86

b

A

F = 3.94,

p = 0.03

Control

1.67 ± 1.67

  

2.50 ± 1.60

  

3.33 ± 1.36

   
 

F = 21.10, p = 0.00

F = 22.27, p = 0.00

F = 22.12, 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)