Water retention curve to analyze soil structure changes due to liming

Abstract: Liming can influence crop growth by altering pore geometry, pore size distribution and water retention characteristics in acid soils. The aim of this work is to determine liming effects on the soil structure based on analysis of water retention data using a cubic spline adjustment function. For that, the authors investigated the effect of three lime rates (0, 15 and 20 t ha-1) on soil water retention characteristics and pore size distribution of a silty-clay “Cambissolo Háplico Alumínico” (Dystrudept) located in the SE region of the Paraná State, Brazil. Soil cores were collec...