Crescimento, nutri??o mineral e nível crítico foliar de P em mudas de umbuzeiro, em fun??o da aduba??o fosfatada

摘要

This work was accomplished in order to evaluate the growth, the mineral nutrition and the foliar critical level of P in 'umbuzeiro' seedlings, grown in pots containing distroferric Red Latosol, in function of phosphorus fertilization. The experimental design was randomized blocks with four replications and six doses of P (0, 30, 60, 120, 240 and 480 mg dm-3). The phosphorus fertilization was done in just one application, before the transplant of the seedlings. The dose of 281 mg dm-3 of P provided the highest production of dry matter of the 'umbuzeiro' seedlings. Even when well nourished with P, the 'umbuzeiro' accumulated more organic matter in the root than shoot. The level critical of P in the leaves of the umbuzeiro seedlings range from 1.52 to 1.91 g kg-1.