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Table 1 Corrected mortality (%) of tick larvae exposed to crude water and water with surfactant extracts (100 mg/mL) of six plant species and Amitraz (2 mL/L, ; 0.002%) (N = 4)

From: Addition of a surfactant to water increases the acaricidal activity of extracts of some plant species used to control ticks by Zimbabwean smallholder farmers

Plant speciesMean mortality (%)Corrected mortality ±SEM (%)
Maerua edulis (tuber)97.597.4 ± 0.96a
Monadenium lugardae (stems)32.330.6 ± 0.96b
Maerua edulis (leaves)15.413.3 ± 3.30c
Cissus quadrangularis (stems)4.21.7 ± 2.34d
Aloe vera (stems)5.02.6 ± 3.10d
Datura stramonium (leaves)19.217.5 ± 4.84c
Cassia abbreviata (leaves)17.715.6 ± 10.16c
Water with surfactant (negative control)2.490 ± 0.87d
Amitraz (positive control)100100a
Water without surfactant00d
  1. Superscripts with different letters in a column denote treatments that differ statistically (P < 0.05)