Table 1.

Effects of the nutrition treatments on plant morphological and growth characteristics.

Morphological parameters	Commercial	+ P	+ NPK	+ Humic acids
Plant height (cm)	63.5 ± 2.12 a	48.6 ± 3.2 b	61.1 ± 3.1 a	60.7 ± 2.06 a
Stem diameter (mm)	8.9 ± 0.62 a	9.2 ± 0.4 a	9.6 ± 0.47 a	8.1 ± 0.47 b
Internode length (cm)	1.6 ± 0.06 a	1.3 ± 0.05 b	1.55 ± 0.04 a	1.5 ± 0.09 a
Inflorescence length (cm)	5.4 ± 0.26 a	4.1 ± 0.16 b	5.1 ± 0.35 a	5.5 ± 0.31 a
No. of internodes on the main stem	9.0 ± 0.9 a	9.1 ± 0.97 a	8.6 ± 0.5 a	8.3 ± 0.55 a
No. of side branches on the main stem	7.7 ± 0.92 a	8.8 ± 0.47 a	10 ± 1.15 a	8.8 ± 1.07 a

Data are averages ±SE (n = 6). Different small letters across a row, represent significant differences within the morphological parameter, according to Tukey’s HSD test at α = 0.05.