AgroZAR - Zinc

ZINC (Zn) is a catalyst for many enzyme systems. A component of enzymes,
involved in the metabolism of nitrogen, carbohydrates, as well as DNA synthesis. IS
an enzyme activator that prevents premature aging of cells. Answers
for the synthesis of tryptophan – the basis of auxin. Contributes to the increase of heat and drought
cold resistance of plants.

Zinc is an important biogenic element present in living organisms that performs
the plant organism has versatile functions: actively participates in oxidative
reducing processes, regulating the oxidation of substrates and the transfer of electrons by
phosphorylating respiratory chain, activates at least 13 enzymes, participates in
biosynthesis of growth stimulants.

The intensity of zinc absorption by plants from the soil depends on its acidity:
it is insignificant in neutral and alkaline soils. On such soils, as well as when abundant
application of phosphorus, zinc strongly binds in the upper horizons, as a result of which it can
zinc starvation occurs, especially in crops with deep roots,
where zinc does not enter. At the same time, a decrease in the amount of absorbed zinc in the soil
is explained by the creation of sparingly soluble phosphates of this element.
Zinc deficiency reduces the absorption of ammonium nitrogen. With insufficient zinc in plants
the accumulation of sugars decreases, the amount of organic acids increases, is disturbed
protein synthesis; at the same time, the content of non-protein nitrogen compounds – amides and amino acids – increases.

Signs of zinc deficiency:
• Shortened internodes.
• The appearance of small yellow spots and chlorotic spots in dicot cultures; appearance
yellow interveinal stripes
in cereal crops.
• Premature death of shoots and falling of leaves in fruit trees.
• Slowed growth and cell dysfunction.