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Table 3 t test for the comparison between the levels of Varroa infestations before and after the four treatments by the different concentrations of jatropha oil

From: Evaluating the impact of jatropha oil extract against the Varroa mite, Varroa destructor Anderson & Trueman (Arachnida: Acari: Varroidae), infesting honeybee colonies (Apis mellifera L.)

Concentrations

Mean percentage of Varroa infestation on worker brood

Mean percentage of Varroa infestation on adult workers

Before treatments

After fourth treatment

t value (df = 6)

Before treatments

After fourth treatment

t value (df = 6)

1%

16.00

3.00

3.434*

18.75

10.50

1.291NS

2%

25.00

6.00

2.752*

17.50

4.25

2.535*

5%

20.00

5.00

7.833**

12.25

7.50

2.094NS

10%

18.00

5.00

8.510**

10.75

7.75

2.640*

Control

12.00

20.00

2.828*

10.00

15.25

2.414*

  1. Minimum average risk t value (P = 0.05) = 2.29