This study outlines the basic principles and practical method of fertilisation technical advice, briefly summing up the main soil types from the aspect of crop production,based on their characteristics that determine fertility (mechanical composition, acidityand lime content). The technical advisory system provides the main soil physical andsoil chemical features and limit concentrations needed for the evaluation of soil qualityand fertilisation need.

The study also touches upon the physiological effects and agronomical significanceof basic nutrients, describing the methods of fertiliser need estimation: field trial/test,soil analyses, using field registry data, preparation of nutrient balance, considering otherfactors that modify fertiliser need.

Finally, the study covers the correlations between fertilisation and environmentalprotection, emphasising that professional fertilisation could result in a healthier soil,soil life, vegetation and animal communities by making up for deficient nutrients.The unfavourable side-effect of manuring and fertilisation (yield decrease, qualitydeterioration, pollution of the soil and groundwater etc.) could arise if nutrients areunprofessionally used in an unnatural form, quantity and proportion.

This communication is a guide for those involved in technical advice..

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