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Table 4 Efficacy of nematode isolates and concentrations mortality rate on fourth 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)

82.93 ± 4.49

a*

B**

90.92 ± 4.31

a

AB

98.87 ± 1.13

a

A

3.33 ± 0.00

F = 6.03, p = 0.01

Steinernema feltiae

(Tokat-Emir)

92.05 ± 2.83

a

A

95.48 ± 3.44

a

A

97.74 ± 1.50

ab

A

3.33 ± 0.00

F = 1.37, p = 0.27

Heterorhabditis bacteriophora

(TOK-20)

17.76 ± 2.27

c

C

30.34 ± 2.70

c

B

56.69 ± 6.24

c

A

2.22 ± 1.11

F = 22.22, p = 0.00

Heterorhabditis bacteriophora

(11 KG)

37.21 ± 3.86

b

C

62.36 ± 4.10

b

B

90.92 ± 3.15

b

A

2.22 ± 1.11

F = 40.21, p = 0.00

 

F = 56.22, p = 0.00

F = 47.57, p = 0.00

F = 28.15, 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)