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. 2016 Mar 30;7:391. doi: 10.3389/fpls.2016.00391

Table 1.

Concentration of the macro nutrients used in the nutrient solution (NS).

Phenological phases N_NO3 N_N H4 K+ P Mg2+ Ca2+ SO42--S

(mM)
Start of cycle - Fourth inflorescence 9.4 0.6 6.1 1.6 1.6 3.2 2.5
Fourth inflorescence - Beginning of harvest 10.1 0.6 7.7 1.6 1.9 3.2 0.7
Beginning of harvest – Third truss 8.1 0.5 7.7 1.6 1.9 2.5 0.4
Third truss – End of the cycle 8.1 0.5 9.2 1.6 1.9 2.5 1.7

The micronutrient concentrations were the following: Fe (20 μM), Mn (5 μM), Zn (2 μM), B (25 μM), Cu (0.5 μM), and Mo (0.1 μM). The starting EC value of the NS was 1.7 dS ⋅ m-1. The concentrations of Na+ and Cl- increased until the values reported into the experimental protocol.