Calagem num podzolico vermelho-amarelo para cultivo de tres gramineas forrageiras

A green house experiment was carried out at Instituto de Zootecnia - Nova Odessa, State of Sao Paulo, in order to study the effects of lime levels (0; 1.2; 2.4 and 3.6 t/ha) upon dry matter yields and concentrations of nitrogen, calcium, magnesium and potassium of guineagrass (Panicum maximum Jacq.),braquiariagrass (Brachiaria decumbens Stapf. Prain) and molassesgrass (Melinis minutiflora P. de Beauv.) grown in an Ultisol. The treatments were arranged in a randomized complete block design, with four replications. Liming increased the dry matter yield in these grasses, particularly at the second harvest. Calcium concentrations in guineagrass increased in lhe two cuttings, in braquiaria at the second harvest, while the concentrations of magnesium in the three grasses increased as lime levels increased.