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Revista de Ciências Agrárias
versión impresa ISSN 0871-018X
Resumen
VILLA, E. y VIDAL, M.. Biomass production model for lime amended acid raña-soils. Rev. de Ciências Agrárias [online]. 2010, vol.33, n.1, pp.191-198. ISSN 0871-018X.
Field trials were carried out over a period of two years, aimed at correcting the acidity of a Typic Palexerult in raña formations in the northern mesa of León province (Spain). Gypsum, dolomite, limestone and sugar foam waste were employed as liming materials to correct soil acidity, incorporating 6000 kg of CaCO3 equivalent per ha-1, and crop trials were carried out using a local variety of rye. In addition to carrying out a general analysis, soluble and easily exchanged forms of A1 were identified (Al-CaCl2), as was A1 extracted using KC1 and BaCl2. Multiple linear regression models for total biomass production show that in the first year, variance (R2 = 0.82) was largely explained by the parameters Al-CaCl2, pH and CECE. However, in the second year of crop trials, production was most closely correlated with the variables Al-KCl and base saturation percentage (R2 = 0.80).
Palabras clave : Al; biomass; liming; model; rañas.