Table 4.

Baby rocket leaf plants hunter color parameters (L*, a*, and b*) at different harvest dates in relation to N fertilization rates (N0 = 0, N1 = 60, N2 = 80, and N3 = 100 kg ha⁻¹) and biostimulant application (Control, tropical plant extract (TPE): Auxym and legume-derived protein hydrolysate (LDPH): Trainer).

Treatments	I Harvest			II Harvest			III Harvest
	L*	a*	b*	L*	a*	b*	L*	a*	b*
Nitrogen (N)
N0	42.83	–16.20 b	25.15 b	39.82	−14.26 c	20.38 b	41.73	–13.01 c	20.39 c
N1	42.96	–16.85 a	25.69 a	39.74	–14.75 b	20.68 b	41.81	–13.30 bc	20.71 bc
N2	42.96	–16.90 a	25.96 a	39.77	–14.91 ab	21.23 a	41.63	–13.69 ab	20.91 ab
N3	42.96	–17.07 a	27.15 a	39.83	−15.07 a	21.40 a	41.66	–13.85 a	21.30 a
Biostimulants (B)
Control	42.87	–16.75	26.20	39.71	–14.64	20.84	41.74	–13.46	20.83
TPE	43.00	–16.72	26.33	39.79	–14.77	20.94	41.67	–13.56	20.89
LDPH	42.91	–16.79	26.18	39.87	–14.83	20.98	41.72	–13.38	20.77
Significance
N	NS	*	**	NS	**	**	NS	**	**
B	NS	NS	NS	NS	NS	NS	NS	NS	NS
N × B	NS	NS	NS	NS	NS	NS	NS	NS	NS

NS, *, ** Non-significant or significant at p < 0.05 and 0.01, respectively. Non-significant interaction was recorded between the two tested factors; the letters separated by Duncan’s test (significance level 0.05) were used to denote statistical differences between the main effects.