Table 4.
Pools of macronutrients (mg per plant) in different compartments of non-reproductive and reproductive plants
| Non-reproductive plants (V) |
Reproductive plants (R) |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nutrient element | Green leaves | Leaf bases (young) | Leaf bases (old) | Stem | Green leaves | Leaf bases (young) | Leaf bases (old) | Stem | Fruit-stalk | Capsule walls | Seeds | Internal translocation |
| N | 798 | 293 | 113 | 235 | 798 | 247 | 113 | 148 | 322 | 157 | 577 | 134 (13 %) |
| P | 43 | 24 | 6 | 19 | 25 | 14 | 4 | 8 | 15 | 10 | 52 | 40 (52 %) |
| K | 1284 | 800 | 130 | 358 | 601 | 280 | 43 | 155 | 843 | 464 | 295 | 1493 (93 %) |
| Mg | 130 | 105 | 43 | 143 | 120 | 67 | 27 | 55 | 51 | 27 | 43 | 151 (126 %) |
| S | 164 | 100 | 38 | 178 | 149 | 66 | 26 | 71 | 104 | 18 | 47 | 167 (99 %) |
Internal translocation is estimated as the difference in pool size of vegetative compartments of reproductive and non-reproductive plants. Division of this figure by the nutrient pools of reproductive structures gives an estimate (in %) of the proportion ‘explained’ by internal translocation.