Question

From the 17 essential plant elements, which one has no mineral sources?
HOPKNS Ca Fe is Mighty good and Clean. The owner is my Cu Zn Mo B the Nickel Miner

Answer 1

The 17 Essential Plant Elements include:

Macro nutrients - Nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mn), sulfur (S).

Micro nutrients -  boron (B), chlorine (Cl), iron (Fe), manganese (Mg), zinc (Zn), copper (Cu), molybdenum (Mo), nickel (Ni), sodium (Na), zinc (Zn), molybdenum (Mo).  

The non-mineral essential plant elements include hydrogen (H), oxygen (O), and carbon (C). These are either taken up as a gas or water.  

There are 4 elements that are beneficial to promote plant growth but are not considered to be necessary for the completion of the plant life cycle. They are silicon, sodium, cobalt, and selenium.