Table 1.
Estimated biomass yields of Narcissus pseudonarcissus (cv. Carlton) plus corresponding galanthamine yields during the first (2016) and second (2017) harvest years (where Daff/full = compound fertiliser applied at a rate of 50 kgN/ha, 25 kgP/ha and 25 kgK/ha; Daff/half = compound fertiliser applied at a rate of 25 kg N/ha, 12.5 kg P/ha and 12.5 kg K/ha).
| Year | Daff/full | Daff/half | s.e.d | F prob | |
|---|---|---|---|---|---|
| 2016 | FM yield (kg/ha) | 1448 | 1765 | 176.8 | ns |
| Galanthamine conc (% FM) | 0.042 | 0.042 | 0.0024 | ns | |
| Galanthamine yield (g/ha) | 594 | 753 | 91.1 | ns | |
| 2017 | FW yield (kg/ha) | 1664 | 1361 | 107.7 | < 0.01 |
| Galanthamine conc (% FM) | 0.050 | 0.044 | 0.0024 | < 0.05 | |
| Galanthamine yield (g/ha) | 831 | 592 | 62.0 | < 0.001 |