| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Theobroma cacao | Seed | -- | 8800.0 | -0.3 | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |
| Tilia sp. | Flower | -- | -- | * | |
| Trifolium pratense | Plant | -- | -- | * | |
| Trigonella foenum-graecum | Seed | 12150.0 | 13365.0 | 0.5 | * |
| Triticum aestivum | Seed | 1000.0 | 7567.0 | -0.6 | * |
| Urtica dioica | Leaf | -- | -- | Jim Duke's personal files. | |
| Vaccinium corymbosum | Fruit | 200.0 | 1300.0 | -0.8 | * |
| Valeriana officinalis | Rhizome | -- | -- | * | |
| Valerianella locusta | Plant | 630.0 | 8750.0 | 0.3 | * |
| Vicia faba | Seed | 2460.0 | 12950.0 | 0.5 | USDA's Ag Handbook 8 and sequelae) |
| Vigna unguiculata | Seed | -- | 12030.0 | 0.3 | * |
| Vigna angularis | Seed | 9760.0 | 11275.0 | 0.1 | * |
| Vigna unguiculata | Seed | -- | 12030.0 | 0.3 | * |
| Vigna radiata | Sprout Seedling | 330.0 | 3466.0 | -1.3 | USDA's Ag Handbook 8 and sequelae) |
| Vigna radiata | Seed | 11760.0 | 12930.0 | 0.5 | USDA's Ag Handbook 8 and sequelae) |
| Vitis vinifera | Fruit | 320.0 | 1646.0 | -0.7 | USDA's Ag Handbook 8 and sequelae) |
| Zea mays | Seed | 1530.0 | 6365.0 | -0.8 | USDA's Ag Handbook 8 and sequelae) |
| Zingiber officinale | Tuber | -- | -- | * | |
| Zingiber officinale | Rhizome | 450.0 | 2596.0 | -1.0 | * |
| Zingiber officinale | Shoot | -- | -- | * |