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Do badań wybrano gleby płowe z obszaru Ziemi Dobrzyńskiej. W pobranych z poziomów i podpoziomów genetycznych próbach glebowych określono zawartość Cu całkowitej i Zn całkowitego po mineralizacji w mieszaninie kwasów HClO₄ i HF oraz tzw. form dostępnych dla roślin, w roztworach DTPA. Zawartość Cu całkowitej kształtowała się w granicach 8,9-27,9 mg/kg, co jest dalekie od tzw. granicy dopuszczalnego...
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