Volatile organic compounds of hoary stock are responsible for suppressing downy mildew of grape in an intercropping system

Table 1 Effective concentration for 50% inhibition (EC₅₀) of volatile organic compounds on Plasmopara viticola

Compounds	EC₅₀ (mg/L)	Compounds	EC₅₀ (mg/L)
Tridecane	0.54 ± 0.12	Methyl phenylacetate	3.67 ± 1.20
Phenethyl alcohol	0.63 ± 0.18	(E)-ethyl-2-methyl-2-butenoate	4.37 ± 0.38
Eugenol	0.82 ± 0.24	Ethyl benzoate	4.79 ± 0.0
Limonene	1.38 ± 0.62	Amyl acetate	5.72 ± 0.09
Ethyl-2-methylbutyrate	1.85 ± 0.47	β-caryophyllene	9.33 ± 1.92
1,8-cineole	2.37 ± 0.12	α-pinene	10.71 ± 0.74
Anethol	2.56 ± 0.64	β-pinene	14.49 ± 0.83
2,6-di-tert-butyl-4-methylphenol	2.93 ± 0.86	β-farnesene	126.92 ± 54.14
1,1-diethoxy-ethane	3.03 ± 0.64