EN
Reduced growth and development of plants on acid soils is an effect of worsening of chemical, physical and biological properties of soils and in consequence toxic influence of some elements on plant and restricted uptake of plant nutrients. To more important factors reduced the yield of plants on acid soils could be included: toxic action of Al., Mn and H ions on plants, restriction in uptake of many nutrients by plants, precipition beyond the root system of phosphorus and molybdenum, diminishing of soil sorption capacity and others. Counteraction to these results could be take by application of lime to the optimal level of pH for particular plant species. Individual species and also varieties have different immunity mechanism on excessive acidity of the soil. In that case detrimental effect of soil acidity could be diminished not only by liming but also by assortment of species and varieties as well as by application some chemical compounds (gypsum, compounds of Mg, F, nitrates and others). Mentioned factors are discussed in this paper.