Table 5.
Mineral profile of basil leaves under untreated control, copper sulfate (Cu), copper complexed with amino acids and peptides (Cu-VPH), vegetal protein hydrolysate (VPH), and Cu-VPH enriched with VPH (VPH+Cu-VPH) treatments.
| Treatments | P | K | Ca | Mg | Cu | Fe | Mn | Zn |
|---|---|---|---|---|---|---|---|---|
| mg g–1 dw | μg g–1 dw | |||||||
| Control | 2.61 ± 0.11 | 52.10 ± 1.05 b | 16.54 ± 0.62 b | 3.20 ± 0.06 c | 7.78 ± 0.65 c | 34.06 ± 1.18 b | 61.37 ± 0.54 bc | 19.19 ± 0.59 ab |
| Cu | 2.41 ± 0.12 | 53.02 ± 1.29 b | 16.76 ± 0.48 b | 3.30 ± 0.12 c | 118.66 ± 6.81 a | 33.41 ± 1.58 b | 66.10 ± 2.23 b | 18.40 ± 0.55 b |
| Cu-VPH | 2.42 ± 0.14 | 59.59 ± 1.56 a | 18.65 ± 0.58 ab | 3.78 ± 0.05 ab | 116.87 ± 8.78 a | 44.01 ± 1.98 a | 65.80 ± 1.99 b | 18.76 ± 0.74 ab |
| VPH+Cu-VPH | 2.36 ± 0.01 | 57.73 ± 1.39 ab | 20.63 ± 0.98 a | 3.94 ± 0.13 a | 60.66 ± 2.53 b | 44.83 ± 2.76 a | 74.17 ± 0.87 a | 21.56 ± 0.77 a |
| VPH | 2.32 ± 0.07 | 59.72 ± 0.93 a | 17.17 ± 0.16 b | 3.50 ± 0.08 bc | 6.98 ± 0.64 c | 40.32 ± 1.20 ab | 56.52 ± 0.66 c | 16.83 ± 0.50 b |
| Significance | ns | ** | ** | *** | *** | ** | *** | ** |
ns, **, and *** denote nonsignificant or significant at p ≤ 0.01 and 0.001, respectively. Different letters within each column indicate significant differences according to Tukey HSD test (p = 0.05). All data are expressed as mean ± standard error, n = 3.