Maximum bulk density of Brazilian agricultural soils from the Proctor compaction test

Data on soil maximum buylk density from the Proctor compaction test, soil texture (clay, sil and sand contents), soil organic carbon and bulk density for Brazilian soils taken from peer-reviewd scientific papers. Metadata: citation reference citation country country of origin of the data point state state in Brazil from which the data came from city municipality in Brazil from which the data came from order soil order - Brazilian Soil Classification suborder soil suborder according to the Brazilian System for Soil Classification soil_class soil classification - 4th level according to Brazilian Soil Classification latitude geographic coordenate - latitude longitude geographic coordenate - longitude landuse current landuse on the sampling site depth sampling depth data_form wether data came from tables, comapction curve graphs or from the original thesis CLAY clay content in g/kg SILT silt content in g/kg SAND sand content in g/kg SOC soil organic carbon content in g/kg Db soil bulk density in g/cm³ Dbmax maximum bulk density in g/cm³ from the Proctor compaction test CLAY2 squared clay content in g/kg SILT2 squared silt content in g/kg SAND2 squared sand content in g/kg ClSi clay:silt ratio ClSa clay:sand ratio SiCl silt:clay ratio SiSa silt:sand ratio SaCl sand:clay ratio SaSi sand:silt ratio ClSiSand (clay+silt):sand ratio or fine to coarse ratio Cfratio sand:(clay+silt) ratio or coarse to fine ratio SSI strucutral stability index or soc:(clay+silt) ratio SOCCl SOC to clay ratio Cl_ClSi clay to clay+silt ratio Si_ClSi silt to clay+silt ratio lnClSi logarithm of the clay:silt ratio lnClSa logarithm of the clay:sand ratio lnSiCl logarithm of the silt:clay ratio lnSiSa logarithm of the silt:sand ratio lnSaCl logarithm of the sand:clay ratio lnSaSi logarithm of the sand:silt ratio lnClSiSand logarithm of the (clay+silt):sand ratio or fine to coarse ratio lnCfratio logarithm of the sand:(clay+silt) ratio or coarse to fine ratio lnCl_ClSi logarithm of the clay to clay+silt ratio lnSi_ClSi logarithm of the silt to clay+silt ratio lnCl logarithm of the clay content lnSi logarithm of the silt content lnSa logarithm of the sand content reference complete reference for the original data