Skip to main content
Egyptian Journal of Biological Pest Control

Table 2 Effects of Bacillus thuringiensis var. thuringiensis against Syllepte derogata larvae under field conditions

From: Biological characteristics and efficacy of Bacillus thuringiensis var. thuringiensis against the cotton leaf roller, Syllepte derogata (Fabricius, 1775) (Lepidoptera: Crambidae)

Btt concentration (g/l)

Mortality rate (%)

3rd day

7th day

0.5 g/l

57.41

72.88

Control

0.00

0.00

Ttest

t = − 7.57238

t = − 18.3358

P = 0.0066*

P = 0.0004*

  1. *According to the independent t test, there is a significant difference between treatment and control on both 3th and 7th days (p ˂ 0.01).
Back to article page