Abstract
A field experiment was established in a schist soil, in the portuguese region of Tras-os-Montes, aiming to study the effect of two nitrogen, phosphorus and lime application rates on leaf mineral composition and yields of olive trees (cv. Verdeal Transmontana). The results are inconsistent concerning nutrient behaviour according to the experimental year. However, main results point to a leaf-Zn decreasing during the third year of the trial as a result of nitrogen application. During the fourth and fifth years of the trial, the leaf-P increased due to both lime and phosphorus applications. In the fifth year, nitrogen application showed a positive effect on foliar Mn concentrations, while liming induced lower levels; in the same year the phosphorus fertilization increased the leaf-S.
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