FAQ: How do I know when my plants are lacking trace elements? – Knowledge Base

Here's some signs of trace element deficiencies:

Boron: Death of stem and root apical meristem, leaves twisted, young tissue most affected
Cobalt: used for nitrogen fixation, same as nitrogen deficiency signs (stunted growth)
Copper: Young leaves dark green, twisted, wilted, tip remains alive
Manganese: Chlorosis of young leaves, with smallest veins remaining green, necrosis between veins
Molybdenum: Chlorosis, twisting, death of young leaves
Zinc: Reduced leaf size, shortened internodes, chlorosis, spotted leaves, older leaves most affected<
Nickel: lack of germination or seed formation, required for iron absorption