The great volume of calcareous wastes generated by dimension stone industry and its composition, rich in important elements to promote plant growth, indicate possibilities of utilizing them as amendment of soil acidity. This study aimed to compare the capacity of neutralization of soil acidity and the use of two kinds of marble waste and a commercial limestone. The experiment was conducted in a completely randomized design, in factorial scheme, with four replications. An Oxisol mixed with four different doses of amendment (75, 100, 150, 300% and control), based on a standard recommendation. The experimental units consited of storage in polyethylene bags, and the soil moisture was elevated up to 70% of field capacity using distillated water. The pH, Ca, Mg, Al, H + Al, were analysed and SB, CTC, V were calculated. The wastes showed good potential to be used as amendment of soil acidity, since the initial reactivity was higher than the commercial limestone.
dimension stones; liming; agrominerals
