| Treatment | NRA, nmoles NO2 h−1∙g−1 fr. wt. | ||
| AlCl3 conc., mM | KNO3, 10 mM | NH4NO3, 5 mM | NH4Cl, 10 mM |
| 0.000 | 1610 ± 78 (100) | 1283 ± 110 (100) | 597 ± 79 (100) |
| 0.001 | 1660 ± 197 (103) | 1020 ± 135 (80) | 520 ± 94 (87) |
| 0.010 | 1836 ± 195 (114) | 1038 ± 122 (81) | 481 ± 44 (81) |
| 0.100 | 1827 ± 148 (114) | 1040 ± 152 (81) | 461 ± 60 (77) |