In Vitro Acaricidal Activity of Selected Medicinal Plants Traditionally Used against Ticks in Eastern Ethiopia

Table 5

In vitro tick killing effect of methanolic extract of Vernonia amygdalina against Rh. (B). decoloratus.

Extract concentration (mg/ml)	Mean number of ticks dead () at minute/hour post exposure
	30 min	1 hr	2 hr	3 hr	6 hr	12 hr	24 hr
100	^a	^a	^ab	^cd	^cd	^de	^bc
50	^a	^a	^ab	^abc	^bc	^cd	^bc
25	^a	^a	^a	^bc	^b	^bc	^b
12.5	^a	^a	^a	^ab	^ab	^bc	^b
6.25	^a	^a	^a	^a	^a	^b	^b
0.1% diazinon	^a	^a	^b	^d	^d	^e	^c
Distilled water	^a	^a	^a	^a	^a	^a	^a

Means followed by the same letter on the same column are not significantly different by ANOVA ().