The effects of mineral nutrient deficiencies on Eucalyptus urophylla growth in nutrient solutions

Abstract

The present was work carried out in order to study: a. the effect of the omission and presence of N, P, K, Ca, Mg, S, B and Fe on the growth of Eucalyptus urophylla. b. deficiency symptoms; c. the effect of the deficiencies on the dry matter production and on the chemical composition. Seedlings of Eucalyptus urophylla were grown in pots containing nutritive solution (HOAGLAND & ARNON, 1950, modificated by SARRUGE, 1970). Clear cut deficiencies symptoms of N, P, K, Mg, B, Fe were observed. The morphological deficiencies symptoms of phosphorus and calcium observed in the leaves were not in complete agreement with the symptoms reported in the literature. The leaves presented the following mineral contents (% and ppm expresse in dry matter weight):