Nevada Desert Face Facility Soil Texture and Particle Size

Samples collected in 1997 from center of each plot before CO2 treatment commenced. Samples were oven dried (60C) and total weight determined. Sample were fractionated using a 2mm sieve and weights of rock fraction (>= 2mm) and soil fraction (<2mm) determined. Soil fraction was further analyzed for particle size ([NDFF_Soil_Particle_Size.xls]).Soil fractions of samples collected at NDFF([NDFF_Soil_Texture.xls]) in 1997 before CO2 treatment commenced. Samples were processed through 62.5 um sieve to remove sand fraction then analysized for fine soil particle size on Micromeretics Saturn DigiSizer 5200.(see http://soilslab.dri.edu/instrument_dig.htm)