Abstract

BERNAL F., ANDREA ANGÉLICA; FORERO U., FABIO EMILIO  and  ALMANZA-MERCHAN, PEDRO JOSÉ. Content of foliar sulfur, aluminum, iron and manganese in plant species grown in acid sulfate soil. rev.colomb.cienc.hortic. [online]. 2015, vol.9, n.2, pp.279-289. ISSN 2011-2173.  https://doi.org/10.17584/rcch.2015v9i2.4184.

Acid sulfate soils (ASS) are characterized by having high amounts of iron and sulfur minerals, which, in the presence of air, are oxidized and form sulfuric horizons that are extremely acidic, which affects the growth of plants and generates a scalded surface. Using plants as cover crops is proposed as an environmental practice that can be implemented in these soils. In this study, a leaf analysis of three plant species, fodder beet (Beta vulgaris L.), forage turnip (Brassica rapa L.) and fodder radish (Raphanus sativus L.) planted in an ASS, was contrasted with that of a non-sulfated soil in order to evaluate the excesses or deficiencies of sulfur (S), aluminum (Al), iron (Fe) and manganese (Mn) in plants sown in an ASS of Paipa (Boyacá). The plants were hold under greenhouse plastic cover, in 5 kg black plastic bags, and, at the end of their growing season, the foliar concentrations of the elements proposed were measured. The results indicated that the plants sown in the ASS had higher foliar contents of S, Al, Fe and Mn than the plants in the non-sulfated soil, probably due to an increase or removal of the storage capacity by the species or increased availability of the elements in the ASS.

Keywords : soil acidity; Beta vulgaris; Brassica rapa; Raphanus sativus.

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