Trace elements or micro elements are those that plants need in very small quantities for healthy growth. Trace elements include; iron, manganese, boron, copper, zinc and molybdenum.
The macro nutrients that plants need in relatively large quantities are nitrogen (N), sulphur (S), phosphorus (P), potassium (K), calcium (Ca) and magnesium (Mg). But plants also need trace elements in small quantities for healthy growth. Trace elements include; iron (Fe), manganese (Mn), boron (B), copper (Cu), zinc (Zn), molybdenum (Mo) and humic acids.
If any of these are not available to the plant it may suffer characteristic symptoms.
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