Table 5. NPK composition of Ocimum basilicum exposed to different night lighting regimen in a polyculture aquaponic system (wet weight basis)

Parameter	0 h	4 h	8 h	12 h
Cycle 1
Initial N (mg/g)	20.38 ± 0.24	20.41 ± 0.11	20.40 ± 0.13	20.40 ± 0.21
Final N (mg/g)	31.16 ± 0.15^a	31.07 ± 0.32^a	31.13 ± 0.03^a	31.15 ± 0.48^a
Initial P (mg/g)	0.57 ± 0.01	0.58 ± 0.02	0.59 ± 0.02	0.58 ± 0.02
Final P (mg/g)	1.12 ± 0.02^a	1.13 ± 0.02^a	1.13 ± 0.03^a	1.13 ± 0.03^a
Initial K (mg/g)	1.10 ± 0.01	1.09 ± 0.01	1.10 ± 0.02	1.10 ± 0.03
Final K (mg/g)	1.50 ± 0.01^a	1.49 ± 0.02^a	1.49 ± 0.03^a	1.50 ± 0.06^a
Cycle 2
Initial N (mg/g)	20.85 ± 0.14	20.86 ± 0.18	20.83 ± 0.19	20.85 ± 0.14
Final N (mg/g)	32.22 ± 0.25^a	32.22 ± 0.11^a	32.11 ± 0.25^a	32.25 ± 0.06^a
Initial P (mg/g)	0.59 ± 0.02	0.58 ± 0.03	0.59 ± 0.02	0.59 ± 0.02
Final P (mg/g)	1.21 ± 0.01^a	1.21 ± 0.0^a	1.21 ± 0.01^a	1.23 ± 0.03^a
Initial K (mg/g)	1.09 ± 0.02	1.09 ± 0.03	1.09 ± 0.04	1.10 ± 0.03
Final K (mg/g)	1.51 ± 0.06^a	1.51 ± 0.08^a	1.53 ± 0.07^a	1.53 ± 0.01^a

Data are represented as mean ± SE.
Values within the same row with different superscript letters are significantly different (p < 0.05).
N, nitrogen; P, phosphate; K, potassium.