Abstract

BERNAL FIGUEROA, Andrea Angélica  and  FORERO ULLOA, Fabio Emilio. Evaluation of plant species for use in the control of acid sulfated soils in Paipa, Boyacá. Corpoica cienc. tecnol. agropecu. [online]. 2014, vol.15, n.2, pp.229-236. ISSN 0122-8706.

Acid sulfated soils are characterized by high amounts of iron and sulfur, which in presence of air are oxidized and form sulfuric horizons extremely acidic, generating environmental changes ranging from water pollution to problems associated with fertility and crop production, among others. This research was conducted in order to identify suitable plant species to control the acidity of these soils in the town of Paipa, Boyacá, Colombia. A completely randomized experimental design with 6 treatments and 3 replications was implemented in potting shed; there, the response of Beta vulgaris L. (forage beet), Brassica rapa L. (forage turnip) and Raphanus sativus L. (forage radish) on the acidity of sulfated acid soil, contrasted with a non-sulfated soil, was evaluated, after correction with liming. To assess the effects, pH and exchangeable acidity (H⁺ + Al⁺³ cmol /kg ) were measured in the two types of soil before and after seeding ; the agronomic response of plants in each treatment was determined at the end of the growing season (120 days after seeding ). On acid sulfated soils, species B. rapa, R. sativus and B. vulgaris along with the complementary use of liming as corrective induced a reduction in exchangeable acidity; B. rapa and R. sativus showed better growth potential and resistance, while B. vulgaris was affected in height and root diameter.

Keywords : liming; forage turnips; forage radish; rehabilitation; forage beet; acid sulfated soils.

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