Table 3.

EC₅₀ and EC₉₀ values (µg/cm² of filter paper) and their 95% fiducial limits, standard deviations, and P values of three allelochemicals ([1], [2], and [3]) isolated by silica gel chromatography and tested in the bridge bioassay.

Allelochemical	EC50	95% Fiducial Limits		EC90	95% Fiducial Limits		Standard deviation	P-Value
	(µg/cm²)	Lower	Upper	(µg/cm²)	Lower	Upper
[1] 7-epi-zingiberene	0.01655	0.01392	0.0198	0.0481	0.03785	0.06612	0.00030	<.0001
[2] 9-hydroxy-zingiberene	0.00198	0.00165	0.00235	0.0073	0.0057	0.00103	0.00032	<.0001
[3] 9-hydroxy,10,11-epoxy-zingiberene	0.00182	0.00167	0.00216	0.00448	0.00363	0.00602	0.00018	<.0001