Molybdenum- nitrogen fixation and nitrate reduction.
Copper- involved in some REDOX reactions.
Zinc- activator or component of many enzymes.
Manganese- enzyme activator, membrane integrity, oxygen release in PSN.
Boron- Ca2+ utilization, nucleic acid synthesis, membrane integrity.
Iron- chlorophyll synthesis.
Chlorine- osmosis and ionic balance.
Nickel- enzyme functioning in nitrogen metabolism.