| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Nigella sativa | Seed | 13100.0 | 16750.0 | 3.2 | * |
| Bertholletia excelsa | Seed | 10140.0 | 10346.0 | 1.6 | * |
| Juglans cinerea | Seed | 6111.0 | 6321.0 | 0.5 | * |
| Oenothera biennis | Seed | 5400.0 | 5763.0 | 0.4 | * |
| Cucurbita pepo | Seed | 5195.0 | 7885.0 | 0.9 | * |
| Helianthus annuus | Seed | 4940.0 | 20500.0 | 4.2 | * |
| Glycine max | Seed | 4920.0 | 5380.0 | 0.3 | USDA's Ag Handbook 8 and sequelae) |
| Sinapis alba | Seed | 4800.0 | 5136.0 | 0.2 | * |
| Juglans nigra | Seed | 4730.0 | 4945.0 | 0.2 | USDA's Ag Handbook 8 and sequelae) |
| Papaver somniferum | Seed | 4700.0 | 5042.0 | 0.2 | * |
| Papaver bracteatum | Seed | 4500.0 | 5050.0 | 0.2 | * |
| Pinus pinea | Seed | 4300.0 | 6050.0 | 0.4 | * |
| Pistacia vera | Seed | 3810.0 | 3963.0 | -0.1 | * |
| Carum carvi | Seed | 3610.0 | 4005.0 | -0.1 | Revised USDA data received 1993. |
| Psophocarpus tetragonolobus | Seed | 3560.0 | 3884.0 | -0.1 | * |
| Vigna unguiculata | Seed | 3460.0 | 3779.0 | -0.1 | USDA's Ag Handbook 8 and sequelae) |
| Phaseolus vulgaris | Seed | 3250.0 | 3653.0 | -0.2 | USDA's Ag Handbook 8 and sequelae) |
| Sesamum indicum | Seed | 3120.0 | 9413.0 | 1.3 | * |
| Trigonella foenum-graecum | Seed | 3120.0 | 3720.0 | -0.2 | * |
| Foeniculum vulgare | Fruit | 3010.0 | 3302.0 | 2.9 | * |