Influence of lime and phosphorus in initial growth of eucalyptus and in P critical level

Abstract

The effect of combined application of lime and phosphorus in critical levels in soil and plants of Eucalyptus dunnii in vessels was studied. The treatments consisted of three levels of lime (C0, without liming; C1/2, liming with half the doses to raise the pH in water at pH 5.5 by the method of SMP; C1, liming with dose to raise the pH in water at 5.5 by the same method) and five doses of phosphorus (0, 50, 150, 300 and 600 mg P kg-1 of soil). The experiment was carried out during 67 days in a greenhouse, using a Ta-aluminate Typical Humic Cambisol. The highest yields of shoots dry matter were observed at the highest level of liming. The critical levels of P in soil and shoot dry mass decreased with increasing level of liming.