The effect of long-term liming on the chemical properties of Lithuanian soils

This paper summarizes the results of long-term stationary studies of the li ming effect on 330 profiles of very acidic soddy moderately podzolic soils on moraine loam and of soddy slightly podzolic soil on glaciofluvial loamy sand. Individual soil profiles and trenches were examined. The effect of in itial liming with 2.0 and 2.5 standard doses of slaked lime can be observed in the soil on moraine loam even after 50 years. An intensive periodical l iming with powder-like ground limestone (2.0 standard doses each 3-4 years and 2.5 standard doses each 7 years) on the background of liming with 2.0 a nd 2.5 doses of slaked lime (corresponding to 59.9 and 55.4 t/ha, respectiv ely) prevents the acidification of the plow and A2B horizons in the layer o f 0-50 cm and improves soil properties in the layer of 0-1 m. An intensive liming (23 t/ha of CaCO3 in 25 years) of the soil on glaciofluvial loamy sa nd underlain by calcareous gravel changed its chemical properties in the la yer of 0-60 cm.