Table 2.

Effects of benzoxazolin-2(3H)-one (BOA) and cinnamic acid (CA) on root length (cm) of three C₃ perennials (L. perenne, D. glomerata, and R. acetosa) at four (0.1, 0.5, 1.0, and 1.5 mM) concentrations

	Concentration (mM)	L. perenne	D. glomerata	R. acetosa
BOA	0	33.00±0.27	52.32±3.18	20.38±0.95
	0.1	31.00±2.30*	47.58±1.48*	18.00±1.73*
	0.5	26.33±2.33*	47.50±4.92*	17.67±1.20*
	1.0	22.33±1.45*	43.33±1.85*	16.00±0.93*
	1.5	22.67±1.45*	42.33±1.45*	15.50±1.32*
CA	0	33.00±0.27	52.32±3.18	20.38±0.95
	0.1	27.10±0.49*	43.57±2.82*	16.38±0.95*
	0.5	26.33±1.33	40.66±3.71*	15.67±1.20*
	1.0	25.00±1.76*	37.33±2.40*	15.33±0.88*
	1.5	24.60±1.20*	33.67±1.85*	14.33±1.76*

Each value represents the mean (±SE) of three replicates.

*Significant differences compared with the control for P <0.05 according to the Dunnett test.