oils

Concentration (%)

Control

cedar

pine

thyme

lemon

0.2

53.18 a

31.68 d

33.74 c

0

36.09 b

0.5

27.27 f

30.48 d

0

8.46 h

1.0

30.70 d

28.92 e

0

0

2.0

28.41 e

26.00 g

0

0