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Dr. Duke's Phytochemical and Ethnobotanical Databases
U.S. Department of Agriculture
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K2O

Chemical ID
K2O
Ubiquitous
No

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List of chemical plants.
Click on column headings to sort table by that column. *Unless otherwise noted all references are to (Duke, 1992)
Plant Name Plant Part Low Parts Per Million High Parts Per Million Standard Deviation Reference
Indigofera tinctoria Leaf 16500.0 -1.0 *
Melilotus alba Plant 8300.0 -1.4 *
Melilotus indica Plant 15300.0 0.7 *
Tephrosia candida Plant 15100.0 0.7 *
Tridax procumbens Leaf 84000.0 1.0 ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes.