An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

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

 K2O

Download a full report in PDF format
Chemid
K2O
Ubiquitous
No

Data Views

List of all chemical plants
Click on column headings to sort table by that column
Plant Part Low PPM High PPM StdDev *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.
*Unless otherwise noted all references are to Duke, James A. 1992. Handbook of phytochemical constituents of GRAS herbs and other economic plants. Boca Raton, FL. CRC Press.