Table 2 Antifungal activity of spinasterol and 22,23-dihydrospinasterol against Magnaporthe grisea, Rhizoctonia solani, and Phytophthora infestans.

Compound name	Conc. µg mL⁻¹	Inhibition ratio (%)			EC₅₀^a
Compound name	Conc. µg mL⁻¹	M. grisea	R. solani	P. infestans	M. grisea	R. solani	P. infestans
Spinasterol and 22,23-dihydrospinasterol	0.78	0.088	0.016	0.158	206.09	129.56	1093.1
	3.12	0.115	0.073	0.195
	12.5	0.218	0.208	0.247
	50	0.373	0.336	0.341
Boscalid	0.78	0.055	0.153	0.333	868.02	1.64	1.62
	3.12	0.139	0.913	0.616
	12.5	0.212	0.964	0.966
	50	0.255	0.964	0.994
Carbendazim	0.78	0.955	0.653	0.118	< 0.78	< 0.75	8721.1
	3.12	0.997	0.879	0.187
	12.5	1.000	1.000	0.141
	50	1.000	1.000	0.170

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