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Table 1 Efficacy of nematode isolates and concentrations mortality rate on 6th 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 species

Concentrations

 

250 IJs/ml

500 IJs/ml

1000 IJs/ml

Control

 

Steinernema carpocapsae

( Tokat-Bakışlı05)

70.23 ± 14.94

a*

C**

85.71 ± 13.13

b

B

95.24 ± 10.86

ab

A

6.67 ± 1.67

F = 11.22, p = 0.00

Steinernema feltiae

(Tokat-Emir)

78.13 ± 7.45

a

B

95.24 ± 9.45

a

A

98.81 ± 3.57

a

A

8.89 ± 3.09

F = 23.26, p = 0.00

Heterorhabditis bacteriophora

(TOK-20)

38.07 ± 8.93

b

B

49.98 ± 16.08

c

AB

54.75 ± 10.42

c

A

6.67 ± 3.33

F = 4.42, p = 0.02

Heterorhabditis bacteriophora

(11 KG)

69.04 ± 9.94

a

A

78.56 ± 13.13

b

AB

90.47 ± 9.95

b

A

6.67 ± 3.33

F = 6.60, p = 0.01

 

F = 22.65, p = 0.00

F = 15.44, p = 0.00

F = 29.24, 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)