Comparação entre os métodos do cilindro e do torrão na determinação da porosidade e da densidade do solo

The objective of this study was to compare and to establish relations between bulk density, total porosity, macro and microporosity values determined by the Uhland core method and by the clod method, for no tillage and conventional tillage, with and without grazing. Soil samples were collected from a Hapludalf, with a loam surface texture, located in Santa Maria, in Brazil. The bulk density values obtained by the clod method were greater than those obtained by the Uhland core method. The macroporosity was the soil parameter with the greatest variations when comparing the two methods. Thus, comparison it should be avoided to compare management systems, of studies where different methods were used.