In vitro virulence of three Lecanicillium lecanii strains against the whitefly, Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae)

Egyptian Journal of Biological Pest Control

Table 1 Factorial analysis of variance of the mortality rate of Bemisia tabaci bioassay with the conidia of the three Lecanicillium lecanii strains

Source	DF	SS	MS	F value	p value
Concentration	3	78,385	26,128.2	399.41	≤ 0.001
Time	3	58,315	19,438.2	297.14	≤ 0.001
Treatment	2	693	346.7	5.30	< 0.058
Concentration × time	9	9667	1074.1	16.42	≤ 0.001
Concentration × treatment	6	807	134.4	2.06	0.060
Time × treatment	6	497	82.8	1.27	0.275
Concentration × time × treatment	18	577	32.0	0.49	0.960
Error	192	12,560	65.4
Total	239	161500
CV/GM		19.59/41.29

DF Degree of freedom, SS Sum of squares, MS Mean sum of squares, F F-statistic, CV Coefficient of variation, GM Grand mean
*p < 0.001 (highly significant) and p < 0.05 (significant); three-way factorial analysis of variance (ANOVA) at α = 0.05