Only a few reports have been made on long‐term liming experiments on Ultisols and Oxisols in Africa. This series of experiments on an Ultisol in northern Zambia, beginning in 1978, were used to measure the effects of liming with continuous cultivation in an area which receives about 1200 mm annual rainfall in a 7‐month period. The effects of liming were still present after 8.5 years. Lime applied at 8 t ha‐1reduced soluble Al in the 30–45 and 60–75 cm depths to 1/3 and 1/2 respectively of that in the control; lower rates of lime were less effective at these depths. Changes in pH, exchangeable Ca and Mg, and soluble Al also occurred at the various depths for the lime treatments.