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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