was performed using 150 mesh and again wet sieving was performed using 200 mesh.
2001; Fierer and Schimel 2003), and dry sieving
is preferable to wet sieving for preservation of structure and soluble SOC components (Sarkhot et al.
The aggregate size distribution and aggregate stability in both dry sieving
and wet sieving will be measured.
Aggregates were separated into three different aggregate size groups (4.0-2.0 mm; 2.0-0.84 mm and less than 0.84 mm) by dry sieving. The dry bulk density and saturated hydraulic conductivity of the TC and TF soils for each aggregate size group was also determined under three different compaction efforts (0, 45, 90 KPa) for saturated condition of soil water content.
The aggregate size groups were separated by dry sieving. Soil samples were gently broken by hand, air- dried and sieved through 4 mm screen.
Feces particle size was determined by dry sieving
. The five sieves which were used for measuring particle size distribution meant these sieves separated feces into six sizes (Table 6).
Water repellency may also concentrate in the finest fractions (<0.125 mm in diameter) when separation of aggregates by dry sieving scrapes off hydrophobic coatings and accumulates these coatings in the finest materials (de Jonge et al.
Soil aggregates of 10 mm size (5 15 mm) were selected from the 2-25-mm fraction, which had been separated by dry sieving soil samples from the topsoil (0-0.20 m depth).
The GilSonic AutoSiever (Model GA-6) performs dry sieving
of fine powders to 5 microns with the utilization of 3" sieves.
of soil with a compact rotary sieve is the technique recommended for determining wind erodible fraction of agricultural soils for use in the wind erosion equation (6, 11).
Significant differences between land use at each site, for the dry sieving
, was determined by use of a t-test (P = 0.05).
A dry sieving
technique was used for measurement of the soils' aggregate size distribution.