Boron (B)
‧Helps in the use of nutrients and regulates other nutrients.
‧Aids production of sugar and carbohydrates.
‧Essential for seed and fruit development.
‧Sources of boron are organic matter and borax

Copper (Cu)
‧Important for reproductive growth.
‧Aids in root metabolism and helps in the utilization of proteins.

Chloride (Cl)
‧Aids plant metabolism.
‧Chloride is found in the soil.

Iron (Fe)
‧Essential for formation of chlorophyll.
‧Sources of iron are the soil, iron sulfate, iron chelate.

Manganese (Mn)
‧Functions with enzyme systems involved in breakdown of carbohydrates, and nitrogen metabolism.
‧Soil is a source of manganese.

Molybdenum (Mo)
‧Helps in the use of nitrogen.
‧Soil is a source of molybdenum.

Zinc (Zn)
‧Essential for the transformation of carbohydrates.
‧Regulates consumption of sugars.
‧Part of the enzyme systems which regulate plant growth.
‧Sources of zinc are soil, zinc oxide, zinc sulfate, zinc chelate.