| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Panax quinquefolius | Plant | 14.0 | 16.0 | -0.7 | * |
| Panax ginseng | Root | -- | -- | * | |
| Papaver somniferum | Leaf | -- | 1000.0 | 0.4 | * |
| Petroselinum crispum | Tissue Culture | -- | -- | * | |
| Petroselinum crispum | Sprout Seedling | -- | -- | * | |
| Pisum sativum | Sprout Seedling | -- | 18.0 | * | |
| Pisum sativum | Seed | -- | 18.0 | -1.0 | * |
| Sambucus nigra | Fruit | -- | -- | * | |
| Solanum tuberosum | Tuber | -- | -- | * | |
| Taraxacum officinale | Root | -- | -- | * | |
| Theobroma cacao | Plant | -- | -- | * | |
| Trachyspermum ammi | Fruit | 21.0 | 23.0 | 1.0 | * |
| Trigonella foenum-graecum | Seed | 0.007 | 35.0 | 1.0 | * |