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Soil Report - Agriculture et Agroalimentaire Canada

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They occur on topography ranging from nearly level to<br />

strongly sloping, but are most prevalent on slopes of 3-6% .<br />

Parent Materials and Textures Bookton soils have developed<br />

on shallow lacustrine and eolian sands overlying clayey<br />

lacustrine and till deposits . The surface consists of 40-100<br />

cm of fine sand, sand or loamy sand overlying silty clay<br />

loam, silty clay or clay .<br />

<strong>Soil</strong> Moisture Characteristics Bookton soils are well-drained .<br />

The surface sands are rapidly permeable, but underlying<br />

clays are only moderately to slowly permeable . On flatter<br />

sites, groundwater may perch on the clays for brief periods of<br />

time . Surface sands have relatively low water-holding capacities<br />

and are droughty during dry summers . Surface runoff is slow<br />

on level to gently sloping Bookton soils, but increases on<br />

moderate and strong slopes .<br />

General <strong>Soil</strong> Description The surface Ap horizon usually<br />

consists of 20-25 cm of fine sandy loam . It is underlaid by 40-<br />

70 cm of sandy A and B horizons over clays . The clay<br />

content of the sands usually is greatest in the Bt horizon near<br />

the clay contact . The clays at this contact zone are som<strong>et</strong>imes<br />

tough and compacted . The clayey materials which comprise<br />

the IICk horizon, have silty clay loam or silty clay textures<br />

on lacustrine plains (BOO), and silty clay loam or clay<br />

textures on till moraines (BOO.T) . The IICk horizon is<br />

usually very strongly calcareous . <strong>Soil</strong> reaction ranges from<br />

strongly acidic or neutral in the surface horizons, to moderately<br />

alkaline in the subsoil . <strong>Soil</strong> classification is usually Brunisolic<br />

Gray Brown Luvisol .<br />

Commonly Associated <strong>Soil</strong>s In lacustrine areas, Berrien<br />

(BRR) and Wauseon (WUS) soils are most often associated<br />

with Bookton soils in map units BOO 3 and BOO 4 . Berrien<br />

and Wauseon soils have similar parent materials, but differ<br />

from Bookton soils by being imperfectly and poorly drained,<br />

respectively . In till areas, Bookton soils are most often<br />

associated with imperfectly drained Gobles (GOB) in map<br />

unit BOO 15, and till phase Berrien (BRR.T) soils in map<br />

unit BOO 13 .<br />

General Land Use Comments<br />

(1) Bookton soils are widely used for tobacco, grain corn,<br />

winter wheat, sour cherries, and some other horticultural<br />

crops . Doughtiness can be a problem and supplemental<br />

irrigation may be necessary for some crops .<br />

(2) Bookton soils are suitable foremost upland forest tree<br />

species, especially white pine, red pine and black walnut .<br />

Figure 25 . Tomatoes growing on a Bookton soil near Boston<br />

Brady <strong>Soil</strong>s (BAY)<br />

Location and Extent Brady soils are mainly confined to the<br />

Norfolk sand plain in the western half of the region . They<br />

also occupy some small areas near Dunnville at the east end<br />

of the region . There are 872 ha of pure Brady map units, and<br />

14669 ha of Brady soils in complex map units, most often<br />

associated with Fox and Granby soils .<br />

Landform and Topography Brady soils occur mainly on<br />

level areas of the Norfolk sand plain . They are often<br />

underlain at a few m<strong>et</strong>ers depth by impermeable clays or<br />

silts . Brady soils occupy topography ranging from level to<br />

very gently sloping, and are most prevalent on slopes of 0 .5-<br />

2'/,, .<br />

Parent Materials and Textures Brady soils have developed<br />

on lacustrine sands, usually modified somewhat at the<br />

surface by wind action . <strong>Soil</strong> textures are most commonly<br />

loamy sand or sand, with occasional fine sand at the surface .<br />

<strong>Soil</strong> Moisture Characteristics Brady soils are imperfectly<br />

drained and usually rapidly permeable . Groundwater levels<br />

rise into the subsurface horizons of Brady soils during the<br />

winter and spring . Brady soils have relatively low waterholding<br />

capacities and consequently are droughty during<br />

dry summers . They have slow surface runoff .<br />

General <strong>Soil</strong> Description The surface Ap horizons usually<br />

consist of 20-25 cm of loamy sand or sand, underlain by 25-<br />

65 cm of loamy sand or sand in subsoil A and B horizons .<br />

Distinct to prominent reddish yellow or dark yellowish<br />

brown mottles are usually present below the 30 cm depth .<br />

The strongly to very strongly calcareous Ck horizon usually<br />

begins at 45-85 cm depth and consists of sand . <strong>Soil</strong> reaction<br />

ranges from very strongly acidic to neutral in the surface<br />

horizons, and is usually moderately alkaline in the subsoil .<br />

<strong>Soil</strong> classification is typically Gleyed Brunisolic Gray Brown<br />

Luvisol .<br />

Commonly Associated <strong>Soil</strong>s Brady soils are most often<br />

associated with Fox (FOX) soils in map unit BAY 4, and with<br />

Granby (GNY) soils in map unit BAY 5 . Fox and Granby<br />

soils differ from the Brady soils by being well drained and<br />

poorly drained, respectively .<br />

General Land Use Comments<br />

(1) Brady soils are extensively used for tobacco . To a lesser<br />

extent they are used forgrain corn, winter wheat. strawberries,<br />

and several commercial veg<strong>et</strong>able crops . Tile drainage is<br />

occasionally necessary for w<strong>et</strong> spots . Brady soils usually<br />

suffer from surface droughtiness and require supplemental<br />

irrigation for high-value crops like tobacco .<br />

(2) Brady soils are considered to be very good for wood<br />

production of most commercial tree species . Droughtiness<br />

can be a problem for recent plantings .<br />

Brant <strong>Soil</strong>s (BRT)<br />

Location and Extent Brant soils are confined to the western<br />

part of the region, adjacent to the eastern edge of the<br />

Norfolk sand plain . They are especially prevalent in the<br />

Simcoe-Waterford area and near Langton . There are 3389<br />

ha of pure Brant map units, and 3607 ha of Brant soils in<br />

complex map units where they are most frequently associated<br />

with Tuscola, Walsher and Alluvium 1 soils .<br />

Landform and Topography Brant soils occur on areas of<br />

glaciolacustrine silts that are usually transitional b<strong>et</strong>ween<br />

shallow water sands and deep water clays . Topography

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