Table 2.

Acaricidal activity of essential oils against Tetranychus urticae adult females at 0.1% concentration 24 h after treatment (Mean ± SD)

Essential oils	Corrected mortality (%)	Total no. of eggs	No. of eggs per live adult
Bergamot	11.0 ± 6.0	225.0 ± 24.1	10.2 ± 0.9
Bitter orange	21.4 ± 21.5	205.3 ± 58.1	10.1 ± 0.8
Black pepper	22.8 ± 20.0	239.0 ± 76.7	12.0 ± 1.2
Blue gum	19.7 ± 22.5	209.7 ± 50.9	9.6 ± 1.9
Cajeput tree	23.5 ± 11.4	201.3 ± 13.3	9.5 ± 1.4
Cedar wood	12.4 ± 6.7	224.0 ± 63.0	9.5 ± 3.2
Cinnamon	23.6 ± 20.6	211.0 ± 51.6	10.8 ± 1.6
Citronella	27.6 ± 20.7	192.3 ± 48.0	8.6 ± 1.7
Clary sage	7.1 ± 0.2	214.7 ± 77.5	8.7 ± 3.2
Clove bud	41.3 ± 36.3	174.3 ± 118.3	10.2 ± 0.9
Common thyme	62.2 ± 42.0	131.7 ± 151.4	17.3 ± 9.4
Cypress	28.9 ± 18.4	198.7 ± 55.5	10.7 ± 1.5
Eucalyptus	27.9 ± 21.7	201.0 ± 36.4	9.9 ± 2.2
Frankincense	24.8 ± 27.7	219.0 ± 98.3	10.3 ± 2.4
Geranium	30.0 ± 15.7	193.3 ± 13.1	10.6 ± 3.1
Ginger	11.9 ± 13.0	242.0 ± 41.1	10.2 ± 0.2
Grapefruit	30.6 ± 35.2	188.7 ± 70.8	11.7 ± 3.6
Hyssop	28.1 ± 22.3	196.7 ± 55.8	9.5 ± 1.7
Juniper	42.6 ± 21.8	128.0 ± 82.0	7.9 ± 3.4
Lemon peel	34.9 ± 37.9	129.3 ± 68.7	8.5 ± 1.7
Lemongrass	17.8 ± 9.5	210.3 ± 48.4	10.0 ± 4.0
Myrrh	22.8 ± 17.8	189.7 ± 70.2	8.9 ± 2.0
Niaouli	26.8 ± 30.7	213.0 ± 85.0	10.8 ± 0.4
Patchouli	20.3 ± 20.4	243.3 ± 86.0	10.9 ± 1.6
Peppermint	23.7 ± 18.2	215.7 ± 52.3	10.5 ± 1.8
Rosemary	11.7 ± 22.0	212.3 ± 33.3	9.3 ± 2.3
Sandalwood	89.2 ± 8.5	28.0 ± 10.0	13.2 ± 5.2
Scotch pine	50.4 ± 18.5	159.7 ± 53.5	14.6 ± 11.1
Sweet basil	21.0 ± 17.9	209.3 ± 62.4	10.5 ± 1.9
Sweet marjoram	7.1 ± 0.2	236.7 ± 18.6	9.5 ± 0.5
Sweet orange	45.6 ± 37.4	123.0 ± 51.9	9.4 ± 2.9
Tea-tree	28.6 ± 33.5	142.7 ± 70.5	7.7 ± 2.3
True lavender	26.1 ± 21.2	226.3 ± 85.7	11.0 ± 1.3
Ylang–Ylang	24.2 ± 14.9	221.7 ± 111.3	10.2 ± 4.2
EtOH + Triton-X + water	10.9 ± 4.4	227.0 ± 27.1	10.8 ± 1.3
Control	0.0	323.7 ± 52.0	13.1 ± 3.6
Statistics at df = 35, 72	F = 1.46	F = 1.56	F = 0.89
	P = 0.0588	P = 0.0576	P = 0.6423