Variable	Description
Plot		Plot number at NDFF (1-9)
Location 	aspect from center (c) where soil sample was taken
Depth (cm) 	soil depth sample was obtained
Sample wt (g) 	total weight of sample
Rock wt(g) 	weight of sample retained by 2 mm sieve
Soil wt (g) 	weight of sample passed through 2 mm sieve
Rock % 		% of sample retained by 2 mm sieve
Soil % 		% of sample passed through 2 mm sieve

Method:  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]).

Contributed by:
S.Zitzer