What is the name of the process of the generation of plant nutrients from dead and decaying organic matter
What is the name of the process of the generation of plant nutrients from dead and decaying organic matter?
Answer: Mineralization.
Mineralization in soil science is the decomposition, i. e. oxidation, of the chemical compounds in organic matter, by which the nutrients in those compounds are released in soluble inorganic forms that may be available to plants.

