. 2018 Aug 10;26(6):1377–1386. doi: 10.1007/s10499-018-0293-8

Table 4.

Lettuce leaf composition of the dry matter (dm) (range […, …] samples, n = 2)

Parameter	Unit	System HP	System RAS	ANOVA
K⁺	mmol kg⁻¹ dm⁻¹	1808.00 [1795, 1821]	2327.50 [2325, 2330]	p = 0.000
Na⁺	mmol kg⁻¹ dm⁻¹	25.50 [25, 26]	91.90 [86.1, 97.7]	p = 0.008
Ca²⁺	mmol kg⁻¹ dm⁻¹	325.00 [314, 336]	408.50 [396, 421]	p = 0.038
Mg²⁺	mmol kg⁻¹ dm⁻¹	167.00 [160, 174]	206.50 ± 7.78 [201, 212]	p = 0.047
N	mmol kg⁻¹ dm⁻¹	3708.00 [3526, 3890]	3909.50 [3864, 3955]	p = 0.395
P	mmol kg⁻¹ dm⁻¹	311.00 [306, 316]	369.00 [353, 385]	p = 0.075
Fe²⁺	mmol kg⁻¹ dm⁻¹	3.25 [3.1, 3.4]	3.70 [3.3, 4.1]	p = 0.403
Mn²⁺	mmol kg⁻¹ dm⁻¹	3.55 [3.4, 3.7]	4.80 [4.6, 5.0]	p = 0.038
Zn²⁺	mmol kg⁻¹ dm⁻¹	15.50 [15, 16]	7.35 [6.5, 8.2]	p = 0.014
B	mmol kg⁻¹ dm⁻¹	3.20 [3.2, 3.2]	3.05 [3.0, 3.1]	p = 0.095
Mo⁶⁺	μmol kg⁻¹ dm⁻¹	25.20 [24.6, 25.8]	18.10 [17.2, 19.0]	p = 0.022
Cu²⁺	μmol kg⁻¹ dm⁻¹	170.50 [170, 171]	148.50 [142, 155]	p = 0.078