Rare Earth Elements

Rare Earth Elements

Lanthanum (La), Cerium (Ce) and Praseodymium (Pr) have been shown to support the following:
     
  1. Confirmed in greenhouse and field conditions to increase crop yields up to 15% in some plant species,
    particularly if moisture was limiting.
  2. Rare Earth Elements may enhance nitrogen fixation by Azotobacter species
  3. Rare Earth Elements may enhance absorption of ions by root hairs
  4. Rare Earth Elements may enhance manganese and iron absorption
  5. Rare Earth Elements may enhance Photosystems I & II efficiencies
  6. Rare Earth Elements have enhanced abscissic acid production
  7. Rare Earth Elements have been shown to help plants contend with stress
  8. Rare Earth Elements may stimulate Mg-ATPase in photosynthesis
  9. Rare Earth Elements enhance the Hill Rxt of Photosynthesis
  10. Rare Earth Elements have inhibited fungal growth (Cercospora nicotianae)

Zinc (Zn)


  1. Zinc is essential for many different enzyme systems in plants
  2. Zinc is important for synthesizing nucleic acids
  3. Zinc is utilized in metabolizing the hormone Auxin

Boron (B)

  1. Has a role in biosynthesis
  2. Impacts metabolic pathways
  3. Improves plasma membrane integrity
  4. Impacts the uptake of sugar

Copper (Cu)

Enzyme activator, notably nitrogen reductase, and for certain protein forming and Vitamin A forming enzymes; an essential part of photosynthesis.

Cobalt (Co)

Root nodule bacteria is required to fix nitrogen and therefore the presence or absence of Co has a direct bearing on legume plants. Enzyme activator, helps form vitamin B12; improves growth, water movement and photosynthesis; boll production in cotton.

Iodine (I)

Some chemical forms of iodine appear to stimulate various plants. For example iodate, not iodide, stimulates the growth of a wide range of plants.

Manganese (Mn)

Manganese is involved in activating several enzyme systems, photosynthesis and protein synthesis

Molybdenum (Mo)

  1. Necessary for nitrogen fixation
  2. Used by the enzyme systems nitrogenase and nitrate reductase
  3. Involved in nitrogen metabolism; similarly stimulates plant vigor.
  4. An important part of chlorophyll
  5. Essential for iron and phosphate metabolism

Nickel (Ni)

The most recent element added to the essential trace element list. Pecans are among plants known to require Ni for fruit production.

Arsenic (As)

At very low concentrations, it has has been known to stimulate plant growth. At high concentrations it is toxic to plants.

Selenium (Se)

Selenium is essential for animals and for bacteria, including the nitrogen-fixing bacteria. Essentiality in higher plants is controversial.

Tin (Sn)

Inorganic tin is generally unavailable to plants, absorbed by root hairs and generally not redistributed elsewhere in the plant. Conclusive studies have not been made.

Vanadium (V)

Essential for the formation of chlorophyll in several forms of algae (lower plants). Its role in higher plants is not yet clear.

Tungsten (W)

Tungsten interacts with molybedum and at < 5 ppm W has been reported to have a positive impact on a variety of higher plants.