Soils of the - Agriculture and Agri-Food Canada

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RYDER SOILS
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Location and Extent : Ryder soils are common on the uplands and lower mountain slopes in the eastern par t
The map area . About 1280 ha of pure map units and 3260 ha of soil complexes dominated by Ryder soils ar e
Mapped . The complexes are mainly with Lonzo Creek, Calkins, Marble Hill and Cannell soils .
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Topography and Elevation : Ryder soils have variable topography, ranging from undulating or gentl y
sloping to very steeply sloping or hilly. Slope gradients range between 5 and 50 percent . Most areas, however ,
are gently rolling or moderately sloping to strongly rolling with gradients from 10 to 30 percent . Elevations rang e
from about 30 to 200 m above sea level .
Parent Material and Texture : Ryder soils have developed from medium-textured . stone-free eolia n
deposits. 50 cm or more thick, which overly moderately coarse textured glacial till, Surface and subsurfac e
ures are mostly silt loam, varying sometimes to loam or fine sandy loam . The moderately stony underlyin g
pact glacial till is sandy loam or gravelly sandy loam, sometimes containing lenses of gravel or sand .
Soil Moisture Characteristics : Ryder soils are well to moderately well drained . They are moderatel y
pervious and have high water holding capacity and slow to moderate surface runoff . Telluric seepage along th e
surface of the subsoil glacial till often occurs during and after heavy, prolonged rains .
General Soil Description : Ryder soils have a dark reddish brown to reddish-brown . friable, weakl y
structured, silty, cultivated surface about 20 cm thick that contains moderate amounts of soft to hard, spherical
cretions. The surface is underlain by at least 30 cm of friable, silty material which varies from reddish-brow n
e upper part to yellowish-brown in the lower part and contains variable amounts of usually soft, spherica l
cretions. Under this, often abruptly, is grayish-brown, firm to very firm, sandy to loamy glacial till whic h
contains . usually in lower slope positions, common to few, yellowish-brown to yellowish-red mottles . A thin (les s
5 cm thick), discontinuous zone of root concentration is often present on top of the glacial till . Soil reactio n
es from very strongly acid in the surface and subsurface to strongly acid in the upper part of the glacial till .
classification is Orthic Humo-Ferric Podzol.
Plate 36 Typical landscape on the uplands
north of Mission . On the undulating
landscape in the foreground are mainly
Ryder and Lonzo Creek soils developed in
a variable depth of silty, eolian material
overlying glacial till . The soils on the hilly
backgroundare similar except Cannel/ soils
also occur there. Cannel, soils are underlain
by bedrock within 1 m of the surf .
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