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Before the upcoming vegetation season, while wheat in the field is still, it is a good time to refresh our knowledge about this important crop through several short texts.

Wheat is the most important bread cereal and the most wide-spread crop in the world and it is basic food to a large part of the world's population. Its most important parts, grain and straw, are fed on and contain 15 elements. The most common in wheat composition is N (nitrogen), P (phosphorus), K (potassium), Ca (calcium), Mg (magnesium) and Si (silicon), slightly lower is Fe (iron) and S (sulfur) and the lowest represented are Zn (zinc), Ni (nickel), Mn (manganese), Mo (molybdenum), Cu (copper), Co (cobalt) and B (boron).

It is important to emphasize that N, P and K nutrients need to be added in a certain amount even to most fertile soils, whether by direct fertilizing of wheat or enhanced fertilizing of pre-culture after which wheat is sown. The amount of nutrition required depends on the yield of the grain and the corresponding harvest residues (straw). As a guide, the required amount for 1t of yield (grain and straw) is 25 - 35 kg of N (nitrogen), 10 - 15 kg of P2O5 (phosphorus) and 20-30 kg of K2O (potassium).

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