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Revista Brasileira de Plantas Medicinais

versão impressa ISSN 1516-0572

Resumo

BENEDETTI, E.L. et al. Liming and fertilization on "espinheira-santa" [Maytenus ilicifolia (Schrad.) Planch.] growth in greenhouse. Rev. bras. plantas med. [online]. 2009, vol.11, n.3, pp.269-276. ISSN 1516-0572.  http://dx.doi.org/10.1590/S1516-05722009000300007.

Since there is scarce information about fertilization for "espinheira-santa" and an increasing search for this species, the present study aimed to evaluate the effect of liming, organic and mineral fertilization, and nutrient omission on Maytenus ilicifolia growth. Seedlings were produced from seeds, and in August 2006 they were transferred to 8 dm3 pots containing Dystrophic Red Latosol. The experiment was carried out in a greenhouse and the design was completely randomized, in bi-factorial arrangement, totaling 12 treatments and four replicates; treatments were: without fertilization and with liming (T1), without fertilization and without liming (T7), organic fertilization (T2 and T8), mineral fertilization NPK (T3 and T9), mineral -N (T4 and T10), mineral -P (T5 and T11) and mineral -K (T6 and T12). T1 to T6 received lime at the dose equivalent to 7.06 t ha-1 calcium carbonate, and T7 to T12 were tested in the absence of liming. After 314 days of the experiment installation, the following variables were analyzed: leaf dry mass (LDM), stem (STDM) and root dry mass (RDM), shoot dry mass (SDM), leaf area (LA), root volume (RV), height (H), diameter (D), root and shoot ratio (R/S), and height and diameter ratio (H/D). Liming alone does not result in significant benefits to plant growth. In the presence of liming, both mineral and organic fertilization can be employed. In the absence of liming, organic fertilization showed to be more favorable in stimulating plant growth. Under mineral fertilization conditions, irrespective of the presence or absence of liming, phosphorus showed to be important for the nutrition of "espinheira-santa".

Palavras-chave : medicinal plants; mineral fertilization; organic fertilization.

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