Bulk and core soil samples were collected from upper, middle, and
lower landscape positions from randomly selected points in each land
use types. Representative sample sites at forest and agricultural lands
were adjacent to each other. Theywere spatially separated by 10–20m
within the same physiographic unit with similar slope and aspect. At
each sampling point, three cores (5.0 cm diameter) were randomly
taken within 1 m of each other to a depth of 15 cm. About 500 g
composite soil samplewas obtained after combining three cores at each
point. A total of 60 composite soil samples were air dried and passedthrough 2 mm sieve, and selected soil attributes were determined. The
bulk density (ρb) was measured by the coremethod (Blake and Hartge,
1986). The infiltration rate was measured by double ring infiltrometer
using the water ponding method. Large clods of bulk samples were
broken by hand into smaller segments along natural cleavages prior to
air drying. The aggregates were sieved using the wet sieving technique
(Yoder, 1936; Kemper and Rosenau, 1986). Soilwater stable aggregates
were assessed according to methods described by Cambardella and
Elliott (1993) and expressed as aggregates N1.0 mm. The remaining soil
was ground and sieved through a 2-mmsieve, and 50 g of the sieved soil
was used for particle size analysis by the hydrometermethod (Gee and
Bauder, 1986). Organic carbon contentwas determined byWalkley and
Black method. Total N was measured with the Kjeldhal method and
available P by ammonium acetate extraction, colorimetrically. Surface
stoniness, vegetative cover and soil macro fauna were measured using
1m2 quadrate at each sampling site.
Bulk and core soil samples were collected from upper, middle, andlower landscape positions from randomly selected points in each landuse types. Representative sample sites at forest and agricultural landswere adjacent to each other. Theywere spatially separated by 10–20mwithin the same physiographic unit with similar slope and aspect. Ateach sampling point, three cores (5.0 cm diameter) were randomlytaken within 1 m of each other to a depth of 15 cm. About 500 gcomposite soil samplewas obtained after combining three cores at eachpoint. A total of 60 composite soil samples were air dried and passedthrough 2 mm sieve, and selected soil attributes were determined. Thebulk density (ρb) was measured by the coremethod (Blake and Hartge,1986). The infiltration rate was measured by double ring infiltrometerusing the water ponding method. Large clods of bulk samples werebroken by hand into smaller segments along natural cleavages prior toair drying. The aggregates were sieved using the wet sieving technique(Yoder, 1936; Kemper and Rosenau, 1986). Soilwater stable aggregateswere assessed according to methods described by Cambardella andElliott (1993) and expressed as aggregates N1.0 mm. The remaining soilwas ground and sieved through a 2-mmsieve, and 50 g of the sieved soilwas used for particle size analysis by the hydrometermethod (Gee andBauder, 1986). Organic carbon contentwas determined byWalkley andBlack method. Total N was measured with the Kjeldhal method andavailable P by ammonium acetate extraction, colorimetrically. Surfacestoniness, vegetative cover and soil macro fauna were measured using1m2 quadrate at each sampling site.
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