Resumen
Availability of nutrients and toxic heavy metals in marigold plants. This study was performed aiming to assess the availability of nutrients and toxic heavy metals present in marigold plants (Calendula officinalis) treated with different fertilizers. The treatments were arranged in factorial scheme (2 x 2 x 3) in a completely randomized experimental design (CRD), with two textures of soil (sandy and clayey), two forms of fertilization (organic and chemical) and three fertilization levels (without fertilization, recommended dose, and twice the recommended dose) totaling 12 treatments, with four replications. The results showed that the clayey soil promoted the availability of N P, K, Mg, Cu, Zn and Fe; on the other hand, the sandy soil favored the availability of Ca, Mn, Pb and Cr. The organic fertilization provided higher levels of P and Fe, while the leaf tissue of marigold plants chemically fertilized presented higher concentrations of K and Mn.