Mineral nutrition of ornamental plants: IV. mineral nutrients deficiencies on rose plants

Abstract

The present work carried out in order to study: a) the effect of the omission and presence of N, R, K, Ca, Mg, S, Cu, B, Fe, Mn and Zn on the growth of the plants variety Happiness; b) deficiency symptoms; c) the effect of the deficiencies on the dry matter production and on the chemical composition. Young rose plants (Rosa spp, var. Happiness) were grown in pots containing pure quartz. Several times a day they were irrigated by percolation with nutrient solutions. CONCLUSIONS: 1. Symptoms of malnutrition were observed for N, R, K, Ca, Mg, S, B, Cu, Fe, Mn and Zn; 2. The omission of the nutrients affected the dry matter producion; 3. The nutrient content, expressed in dry matter, in deficient leaves and leaves and healthy leaves were: 4. One rose plant absorved: R - 25.6 mg; Κ - 232.1 mg; Ca - 158.6 mg; Mg - 32.8 mg; S - 16.5 mg; Cu - 90,0 ug; Fe - 1600 ug; Mn - 608ug; Zn - 611 ug.