Fertilizers are agents used in plant cultivation to produce higher yield and better quality of crops. The role of fertilizers is to provide plants with essential nutrients supporting plant growth and development – macroelements: N (nitrogen), P (phosphorus), K (potassium), Ca (calcium), Mg (magnesium), S (sulphur), Fe (iron), and microelements: Mn (manganese), Cu (copper), Zn (zinc), B (boron), Mo (molybdenum).

Fertilizers can be applied to soils or to leaves (so-called foliar feeding).

Essential nutrients are taken up mainly by roots. Macro- and microelements are essentially required for plants to develop healthy rooting, to grow, and to produce high crop yield.

Foliar feeding is a must and is used to supplement the uptake of nutrients from soil. Foliar application of fertilizers in agriculture and horticulture helps rebalance sudden deficits in nutrients caused by drought and general nutrient deficiencies in soil.

However, only reasonable use of fertilizers guarantees high quality crops, according to Liebig’s law of the minimum. It states that the availability of the most abundant nutrient in the soil is only as good as the availability of the least abundant nutrient in the soil.

Plants absorb the nutrients they need for life mainly through the root system. The ingredients taken up by the roots allow the plant to rooting well, proper growth and development, and consequently a high yield. Fertilization is necessary and supplements soil fertilization.


The foliar application of fertilizers in agricultural and horticultural crops allows for quick removal of sudden nutrient deficiencies caused, for example, by drought, general nutrient deficiencies in the soil and thus in the plant.


According to Liebig’s law, only rational fertilization gives the possibility of obtaining a high-quality crop. Liebig’s law says that the yield of a plant depends on the dose of this nutrient, which is present in the soil in the smallest amounts compared to other necessary nutrients.