The initial study area consisted of a pair of transects, with ten sample
points in each transect. Each transect was parallel to and 4.5 m from
the boundary line (between the farms) and 55 m Jong. Soil samples were
collected in the summer of 1985 from the surface 0-10 cm for all
20 samples and analysed for bulk density and soil water content. At the
same 20 sample points, deeper soil cores (7 cm diameter) to at least
100 cm in depth were analysed in the field for soil texture, colour,
thickness of Al horizon and depth to the Bt horizon. From the texture
and colour changes evident in the soil core profiles, thicknesses of the
surface horizons to the underlying argillic (Bt) horizons were determined.
A t-test was used to compare the bulk densities, moisture
contents, thickness of the Al horizons, and depths to the Bt horizons
between the two farms. The study area also consisted of four plots
(6.1x9.1 m), two on each side of, and 6.1 m away from the boundary
line between the farms. Twenty surface soil samples (0-lOcm depth)
were collected from a grid pattern superimposed on each of the four
plots for a total of 80 samples. These samples were analysed for modulus
of rupture using the Reeve method26 and polysaccharide content according
to the anthrone method proposed by Brink et a/.27 and modified by
Metting and Rayburn28• Statistical comparisons of the results were made
The initial study area consisted of a pair of transects, with ten samplepoints in each transect. Each transect was parallel to and 4.5 m fromthe boundary line (between the farms) and 55 m Jong. Soil samples werecollected in the summer of 1985 from the surface 0-10 cm for all20 samples and analysed for bulk density and soil water content. At thesame 20 sample points, deeper soil cores (7 cm diameter) to at least100 cm in depth were analysed in the field for soil texture, colour,thickness of Al horizon and depth to the Bt horizon. From the textureand colour changes evident in the soil core profiles, thicknesses of thesurface horizons to the underlying argillic (Bt) horizons were determined.A t-test was used to compare the bulk densities, moisturecontents, thickness of the Al horizons, and depths to the Bt horizonsbetween the two farms. The study area also consisted of four plots(6.1x9.1 m), two on each side of, and 6.1 m away from the boundaryline between the farms. Twenty surface soil samples (0-lOcm depth)were collected from a grid pattern superimposed on each of the fourplots for a total of 80 samples. These samples were analysed for modulusof rupture using the Reeve method26 and polysaccharide content accordingto the anthrone method proposed by Brink et a/.27 and modified byMetting and Rayburn28• Statistical comparisons of the results were made
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