A significant increase of pHKCl values was noted by the transfer from objects A (the plants fell completely out) to objects C (the plants grew normally). In the places where the arable layer of soil contained over 70 mg A1 kg⁻¹ the grains showed distinct symptoms of physiological illness, and at the content over 90 mg A1 kg⁻¹ the plants fell out completely. In spite of distinct differences in the growth and development of plants between several objects (A, B, C), the content of basic macroelements and aluminium in the above-ground parts and roots of plants proved stable. The increase of physiological illness symptoms in the particular grain plants was mostly connected with the occurrence of mobile aluminium. The increaes in Al³⁺ concentration in soil limited the growth and development of plants and, in extreme cases, drying and falling out proceded.