35 4Eficiencia energética y monetaria de sistemas de producción de durazno (Prunus pérsica) en El Jarillo, Venezuela 
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Idesia (Arica)

 ISSN 0718-3429

COMBATT CABALLERO, Enrique; ALVAREZ V., Víctor Hugo    LIMA N., Julio César. Estimation and chemical alterations of tiomorphics soils with lime application in greenhouse. Idesia []. 2017, 35, 4, pp.7-16. ISSN 0718-3429.  http://dx.doi.org/10.4067/S0718-34292017000400007.

In tiomorphics soils or acid sulphate soils are produced large amounts of acids, product the oxygenation and drainage, as conse-quence there are release of Al3+ and the pH drops to less than 3.5. The objective was to determine the effect of the application of agricultural lime in the variation of chemical properties in tiomorphics soils drained. Six soil samples were collected in the deltas of the rivers sweet in the state of Espírito Santo - Brazil and Río Sinú Valley in Colombia. The work was developed in greenhouse and laboratory the Department the soil Federal University of Vigosa. The chemical product that was used consisted of a mixture of calcium carbonate (CaO = 54%) and magnesium carbonate (MgO = 39.3%) in molar ratio of 4:1. For this study were used 14 equations having different chemical parameters such as pH, organic matter, potential acidity (H + Al), saturation bases (SB), Fe2+ , Mn2+ and Al3+ extracted by several methods. The results indicate that different dosage of agricultural lime are necessary, to modify the chemical characteristics of different tiomórficos soils. According to the quadratic regression equations than were used to estimate 40% of the maximum dry matter production, is necessary the application of doses of liming between 7.03 and 156 t ha-1 to obtain pH 5.0 and lower the Al3+ interchangeable between 0.139 and 5.37 cmolc dm-3. In addition for estimated a 80% of the maximum dry matter production, it is necessary to apply between 9.36 and 1901 ha-1, with its which would be achieved to reach pH 5.5 and reduce the Al3+ interchangeable between 0 and 1,691 cmolc dm-3.

: limestone; acid sulphate soils; chemical; aluminum; equations..

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