N
Nitrogen is the main nutrient for all plants: neither protein nor many vitamins, especially B group vitamins, can be formed without it.
P
Phosphor promotes plant winter resistance, development and ripening, stimulates fruitification, makes root system growth more intensive and thus improves drought tolerance.
K
Potassium deficiency can clearly manifest itself mostly in the appearance of old leaves: the edges turn brownish, the edges and the tips look burnt.
B
Boron deficiency typically shows as dieback of sprouts, shoot and roots, poor formation and development of reproductive organs and vascular tissue disruption.
Zn
Zinc deficit in plants slows down generation of sucrose, starch and auxins, deranges protein formation thus promoting accumulation of non-protein nitrogen compounds, compromising photosynthesis and impeding plant growth
Mo
Molybdenum deficiency leads to accumulation of nitrates in plants and nitrogenous metabolism. Molybdenum improves calcium uptake by plants.
Mg
Insufficient magnesium mostly takes toll on the ability to absorb phosphor, thus its symptoms are similar to the phosphor deficiency.
Mn
Low magnesium decelerates root system development and plant growth, and decreases the yield. This trace element is indispensable for photosynthesis, synthesis of protein substances, fats etc.
Ca
If calcium is low the leaf blades warp and get twisted, the tips and edges first whiten and then get blackish. The roots, leaves and some parts of the stem first taint and then die out.
S
Sulfur deficiency slackens photosynthesis by 40% down to protein breakdown and accumulation of soluble nitrogen compounds. Sulphur deficit symptoms show up at new leaves or shoots.
Si
Silicon absorption optimization is found to improve photosynthesis efficiency and root system performance.
Fe
Iron deficiency shows up in the first place at new leaves of upright shoots. The leaves tips show chlorosis.
Cu
Copper participates in hormonal regulation of plants: as copper regulates the content of growth inhibitors of a phenolic nature, plants get more resistant to lodging.
Co
Cobalt fully participates in oxidation reduction reactions and stimulates biosynthesis of nucleic acids. It is good for winter wheat in soils close to neutral ones.