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

Table 6

In vitro tick killing effect of methanolic extract of Ricinus communis against Rh. pulchellus.

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	^b	^b	^ab	^b	^cb
50		^a	^b	^ab	^c	^ab	^cb
25		^a	^a	^ab	^bc	^ab	^cb
12.5		^a	^a	^a	^b	^b	^ab
6.25		^a	^a	^a	^a	^ab	^cb
0.1% diazinon		^a	^a	^ab	^c	^ab	^cb
Distilled water		^a	^a	^a	^a	^a	^a

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