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The influence of application of various soil ameliorants (lime, manure and phosphorus fertilizers) to increase fertility of extremely acid soil type Pseudogley was investigated. The greatest fertility increase of studied soil was obtained by combined use of lime, manure and complex NPK fertilizer. In this variant, pH value, content of easy – available P and available Ca increased for 2.0pH units, 3.5 mg 100 g-1 and 39 mg 100 g-1 , respectively in relate to control sample. At the same time, availability of some microelements (Fe, Mn i Zn) significantly decreased, as well as content of mobile Al forms (for 5.7 mg 100 g-1 in relate to control and for 6.3 mg 100 g-1 in relate to others fertilizing variants). The highest content of available P, Ca and Mn were registered under wheat crop, while the highest content of mobile Al and Fe were under rye crop.
