Soil Report - Agriculture et Agroalimentaire Canada
Soil Report - Agriculture et Agroalimentaire Canada
Soil Report - Agriculture et Agroalimentaire Canada
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Parent Materials and Textures Vanessa soils have developed<br />
on 40-100 cm of nearshore lacustrine sand modified by wind<br />
action, over Wentworth till . The texture of the surface<br />
horizons is usually fine sandy loam, som<strong>et</strong>imes grading into<br />
fine sand or loamy sand with depth. The Wentworth till in<br />
this area ranges from somewhat gravelly loam to a gravelly<br />
fine sandy loam .<br />
<strong>Soil</strong> Moisture Characteristics Vanessa soils are poorly<br />
drained . Peaty phase Vanessa soils are very poorly drained .<br />
They both are rapidly permeable . Groundwater levels are at<br />
or near the surface most of the year, receding somewhat in<br />
the summer. Vanessa soils have low water-holding capacities<br />
and low surface runoff.<br />
General <strong>Soil</strong> Description The surface horizons of Vanessa<br />
soilsusually consist of 20-30 cm of fine sandy loam . Exceptions<br />
to this are some peaty phase Vanessa soils (VSS.P), that<br />
have 15-40 cm of organic soils comprising the surface<br />
horizon. Underlying the surface is a zone of variable<br />
thickness, usually b<strong>et</strong>ween 30 and 60 cm thick, of mainly<br />
fine sandy loam, or fine sand . Distinct or prominent, strong<br />
brown to dark yellowish-brown mottles occur in this zone<br />
and in the underlying till . The C horizon usually begins near<br />
the sand-gravel contact, and is strongly to very strongly<br />
calcareous . Textures of the grvelly till range from loam with<br />
10-20% gravel, to gravelly fine sandy loam . <strong>Soil</strong> reaction is<br />
usually neutral in the surface horizons, ranging to mildly or<br />
moderately alkaline in the gravelly subsoil. <strong>Soil</strong> classification<br />
is usually Orthic Humic Gleysol.<br />
Commonly Associated <strong>Soil</strong>s Oakland (OKL) soils are often<br />
associated with Vanessa soils in map unit VSS 3 . They have<br />
similar textures but differ from Vanessa soils by being<br />
imperfectly drained.<br />
General Land Use Comments<br />
(1) Vanessa soils require artificial drainage before they can<br />
be used feasibly for agricultural crops . Drained Vanessa<br />
soils are used for grain corn and spring grains, and to a lesser<br />
extent for tobacco and certain veg<strong>et</strong>able crops.<br />
(2) Mainly because of their w<strong>et</strong>ness, Vanessa soils are of<br />
little value for forest production .<br />
Vittoria <strong>Soil</strong>s (VIT)<br />
Locationand Extent Vittoria soils occur in the western part<br />
of the region, where shallow sands overlie loamy lacustrine<br />
sediments, mainly in the Langton, Waterford and Vittoria<br />
areas . There are 422 ha of pure Vittoria map units, and 4391<br />
ha of Vittoria soils in complex map units in which they are<br />
most extensively associated with Walsher and Silver Hill<br />
soils .<br />
Landform and Topography Vittoria soils occupy lacustrine<br />
plains, composed of shallow wind-modified sands over silts .<br />
The topography ranges from level to very gently sloping .<br />
Parent Materials and Textures Vittoria soils have developed<br />
on 40-100 cm of fine sand to fine sandy loam lacustrine and<br />
eolian deposits, over lacustrine silt loam containing occasional<br />
layers of very fine sandy loam or silty clay loam.<br />
<strong>Soil</strong> Moisture Characteristics Vittoria soils are imperfectly<br />
drained. They are usually rapidly permeable through the<br />
upper sandy materials, but slowly permeable through the<br />
underlying loamy materials that are often capped by a weak<br />
hardpan. Groundwater remains temporarily above this<br />
contact zone, som<strong>et</strong>imes into the growing season . Vittoria<br />
soils have relatively high water-holding capacities and slow<br />
surface runoff.<br />
50<br />
General <strong>Soil</strong> Description The depth of surfaceAp horizons<br />
in Vittoria soils is usually 20-25 cm . The textures of the<br />
surface and upper subsoil horizons of the sandy overlay<br />
materials are dominantly loamy sand, fine sand, fine sandy<br />
loam and loamy fine sand . Distinct or prominent strong<br />
brown to yellowish-brown mottles may occur in this sandy<br />
overlay, and in the underlying loamy materials. These loamy<br />
materials, which begin at the 40-100 cm depth, usually have<br />
silt loam textures, but silty clay loam and very fine sandy<br />
loam layers are not uncommon . The surface of the loamy<br />
materials is often semicemented . The C horizon usually<br />
commences near the sand-silt contact, and is generally<br />
strongly or very strongly calcareous. <strong>Soil</strong> reaction ranges<br />
widely in the surface horizons, from very strongly acidic to<br />
mildly alkaline . In the lower subsoil horizons, soil reaction is<br />
usually mildly or moderately alkaline . <strong>Soil</strong> classification is<br />
usually Gleyed Brunisolic Gray Brown Luvisol.<br />
CommonlyAssociated <strong>Soil</strong>s Walsher(WSH) and Silver Hill<br />
(SIH) soils are often associated with Vittoria soils ; they have<br />
similar textures, but differ by being well and poorly drained,<br />
respectively . Walsher soils are associated with Vittoria soils<br />
in map unit VIT 2 ; with Silver Hill soils in map unit VIT3.<br />
General Land Use Comments<br />
(1) Vittoria soils are good agricultural soils. Some tile<br />
drainage may be necessary for certain crops, and supplemental<br />
irrigation will be needed for high-value crops like tobacco .<br />
Grain corn, swe<strong>et</strong> corn, tomatoes, apples, strawberries and<br />
some other veg<strong>et</strong>able crops are grown commercially on<br />
these soils, at the present time .<br />
(2) Aside from minor limitations, related to the nutrient<br />
supply and erodibility of surface sands, Vittoria soils are<br />
eminently suitable for most commercial tree species.<br />
Walsher <strong>Soil</strong>s (WSH)<br />
Location and Extent Walsher soils are mapped in the<br />
western part of the region, where shallow sands overlie<br />
loamy lacustrine sediments, mainly in the Langton, Waterford,<br />
and Walsh areas . There are 1154 ha of pure Walsher map<br />
units, and 3322 ha of Walsher soils in complex map units<br />
where they are most often associated with Vittoria soils .<br />
Landform and Topography Walsher soils occupy loamy ;<br />
lacustrine plains over which have been deposited shallow<br />
lacustrine sands, that have usually been modified by wind<br />
action . The topography ranges from nearly level to strongly<br />
sloping, but most slopes are in the 2-5% range .<br />
Parent Materials and Textures Walsher soils have developed<br />
on 40-100 cm of sandy lacustrine and eolian deposits<br />
overlying loamy, lacustrine sediments. The texture of the<br />
sandy surface materials is dominantly loamy fine sand . The<br />
underlying loamy sediments usually have textures of silt<br />
loam or loam, with occasional layers of loamy very fine<br />
sand .<br />
<strong>Soil</strong> Moisture Characteristics Walsher soils are welldrained.<br />
They are usually rapidly permeable through the<br />
upper sandy materials, then slowly permeable through the<br />
underlying loamy sediments, which are, in places, capped by<br />
a relatively impermeable, compacted layer . Groundwater<br />
may be above this layer for brief time periods, usually not<br />
long enough to adversely affect plant growth . Walsher soils<br />
have relatively high water-holding capacities, and surface<br />
runoff ranging from slow on level areas to relatively rapid on<br />
steeper slopes .