# Activity | Chemical | Low PPM | High PPM | StdDev | *Reference | |
---|---|---|---|---|---|---|
6 | IRON | Shoot | 10.0 | 1850.0 | 1.81 | Duke, J. A. Writeups or information summaries on approximately 2,000 economic plants, USDA, ARS, Beltsville, MD 20705. |
28 | CALCIUM | Flower | 2358.0 | 13100.0 | 2.03 | * |