Boro e magnésio na produção de óleo essencial de Corymbia citriodora e teor de clorofila

Abstract

The Corymbia citrodora has been presented highlighted importance in the Brazilian economy, for being a little susceptive species to the pedo-climatic variations, what allows its cultivation in many regions besides being an excellent essential oil producer. The objective was to study the effect of the nutrients boron and magnesium on the Corymbia citriodora oil production and chlorophyll content. Two experiments had been carried through and analyzed separately, being one using Typic Quartzipsamment soil (RQ) and Typic Dystrophic Red Latosol (Oxisol) (LVd), where the plants had been cultivated in vases of 3,5 dm 3. The experiments had been designed in factorial system 4 × 5, (0,0; 0,3; 0,6 and 0,9 cmol c dm -3 of Mg) and (0,00; 0,25; 0,50; 0,75 and 1,00 mg dm -3 of B), using the delineation block-type randomized with four repetitions. Seedlings were kept in a greenhouse in the first 15 days and sequentially placed in conditions of natural luminosity, where they had been for a period of 6 months. From the obtained results we can conclude that the contents of B and Mg had affected chlorophyll content and the essential oil production of C. citriodora seedlings.