Table 2.

Nutrient solution uptake, leaf concentration and plant content of selected mineral elements in basil grown under fluorescent light (CK₁) or LED lights at varying R:B ratio (RB_0.5, RB₁, RB₂, RB₃, and RB₄).

	N						P						K
	Uptake %		Concentration (mg g−1 FW)		Content (mg plant−1)		Uptake %		Concentration (mg g−1 FW)		Content (mg plant−1)		Uptake %		Concentration (mg g−1 FW)		Content (mg plant−1)
RB0.5	36	c	5.34	ab	65.6	bc	59	ab	1.09	ab	13.4	bc	55	c	2.43	c	29.9	bc
RB1	34	c	5.62	ab	86.5	b	55	b	0.96	bc	14.9	b	52	c	2.47	c	38.0	b
RB2	41	bc	5.67	ab	121.2	ab	56	b	1.13	ab	24.4	ab	64	b	2.72	b	58.9	a
RB3	52	a	5.83	a	143.6	a	64	a	1.19	a	29.3	a	61	b	2.89	a	71.8	a
RB4	44	b	5.80	a	111.9	ab	57	b	1.05	b	19.6	b	75	a	2.79	ab	53.1	ab
CK1	27	d	5.10	b	36.0	c	48	c	0.89	c	6.7	c	41	d	2.85	a	21.9	c
	∗∗∗		∗		∗∗∗		∗∗∗		∗∗∗		∗∗∗		∗∗∗		∗∗∗		∗∗∗
	Ca						Mg						Fe
	Uptake %		Concentration (mg g−1 FW)		Content (mg plant−1)		Uptake %		Concentration (mg g−1 FW)		Content (mg plant−1)		Uptake %		Concentration (μg g−1 FW)		Content (μg plant−1)
RB0.5	57		0.73	c	8.9	c	26	b	0.57	c	7.0	b	71	c	9.88	c	127.8	c
RB1	52		0.92	b	14.6	bc	20	c	0.66	c	10.2	b	79	b	8.76	c	135.9	c
RB2	50		0.92	b	20.0	ab	22	bc	0.69	bc	14.7	ab	77	b	12.93	b	284.4	b
RB3	55		1.06	a	26.3	a	29	ab	0.73	bc	18.4	a	78	b	17.32	a	439.4	a
RB4	55		0.94	ab	18.8	b	33	a	0.79	b	15.2	ab	91	a	11.32	bc	230.2	bc
CK1	52		0.88	b	6.8	c	22	bc	0.92	a	7.1	b	91	a	7.76	c	59.0	c
	ns		∗∗		∗∗∗		∗∗∗		∗∗∗		∗∗		∗∗∗		∗∗∗		∗∗∗

Mean values from experiments 2 and 3 based on 18 replicate plants. Different letters indicate significant differences at ^∗P ≤ 0.05, ^∗∗P ≤ 0.01, ^∗∗∗P ≤ 0.001. ns, not significant differences. Highest values are in bold.