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The Soils of Brant County - Agriculture and Agri-Food Canada

The Soils of Brant County - Agriculture and Agri-Food Canada

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usually begin at about 50 cm . <strong>The</strong>y have similar prismatic <strong>and</strong>angular blocky structure as the Bt horizons, <strong>and</strong> are clay orheavy clay in texture . <strong>The</strong>y are strongly calcareous . Soil reaction<strong>of</strong>Haldim<strong>and</strong> soils ranges from slightly acidic to neutral inthe surface horizons to moderately alkaline in the subsoil . Soilclassification is Gleyed Brunisolic Gray Brown Luvisol .Soil Moisture Characteristics Haldim<strong>and</strong> soils areimperfectly drained <strong>and</strong> slowly permeable . Groundwater riseswithin the B horizons <strong>of</strong> Haldim<strong>and</strong> soils for temporary periods each year. Perching <strong>of</strong> surface water in the upper horizonsalso is common following periods <strong>of</strong> heavy rainfall . Haldim<strong>and</strong>soils have medium to high water-holding capacities, butcan be droughty during prolonged dry periods due to slowrelease <strong>of</strong>water from the clay textures . <strong>The</strong>y have rapid surfacerun<strong>of</strong>f.Commonly Associated <strong>Soils</strong> Smithville (SHV), Lincoln(LIC) <strong>and</strong> Berrien (BRR) soils are commonly associated withHaldim<strong>and</strong> soils as subdominant components in map unitsHIM 5, HIM 3 <strong>and</strong> HIM 13, respectively. Smithville soils aremoderately well-drained <strong>and</strong> Lincoln soils are poorly drainedon similar parent materials to Haldim<strong>and</strong> soils. Berrien soilsare imperfectly drained <strong>and</strong> have a s<strong>and</strong>y surficial layer 40-100cm in depth over clayey-textured subsoil .L<strong>and</strong> Use <strong>and</strong> Management Haldim<strong>and</strong> soils are fairsoils for agricultural use with moderately severe limitationsdue to soil structure. <strong>The</strong>ir high clay content causes difficultiesin tillage, seed bed preparation, plant emergence <strong>and</strong> root penetration. Excess soil moisture also can be a problem, <strong>and</strong> sometile drainage may be necessary . Grain <strong>and</strong> silage corn, springgrain, winter wheat <strong>and</strong> forages are the most common crops onthese soils .Harrisburg <strong>Soils</strong> (HBG)General Soil Description Harrisburg soils have developedon silt loam textures 40 to 100 cm in depth overlyinglacustrine silty clay loam material . <strong>The</strong>y are well-drained .Surface Ap horizons <strong>of</strong> Harrisburg soils are about 15 cmthick <strong>and</strong> are silt loam in texture . <strong>The</strong>y are moderately high inorganic matter, averaging around 4-5% . <strong>The</strong> underlyingbrownish-coloured Bm horizons are quite thick, extending to adepth <strong>of</strong> approximately 50 cm . <strong>The</strong>y too are silt loam in texture. Distinctive dark-brown Bt horizons <strong>of</strong> silt loam texture,but with a significantly higher clay content than overlyinghorizons, occur from about 50 to 80 cm . <strong>The</strong>yare underlain byCk horizons which are silty clay loam in texture <strong>and</strong> stronglycalcareous . Soil reaction <strong>of</strong> Harrisburg soils ranges from acidicin the surface horizons to moderately alkaline in the subsoil .Soil classification is Brunisolic Gray Brown Luvisol .Soil Moisture Characteristics Harrisburg soils are welldrained<strong>and</strong> moderately to slowly permeable. Perching <strong>of</strong> surfacewater may occur for short periods in the zone immediatelyon top <strong>of</strong> the Bt horizon during periods <strong>of</strong> heavy rainfall . Harrisburgsoils have medium water-holding capacity, <strong>and</strong> may bedroughty during prolonged dry periods . Surface run<strong>of</strong>f can behigh <strong>and</strong> increases significantly with slope.Commonly Associated <strong>Soils</strong> Osborne (OBO), Ohsweken(OSE) <strong>and</strong> <strong>Brant</strong> (BRT) soils are commonly associatedwith Harrisburg soils as subdominant components in mapunits HBG 2, HBG 3 <strong>and</strong> HBO 4, respectively. Osborne soilsare imperfectly drained <strong>and</strong> Ohsweken soils poorly drained onsimilar parent materials to Harrisburg soils . <strong>Brant</strong> soils arewell-drained <strong>and</strong> are formed on deep lacustrine silt loammaterials .L<strong>and</strong> Use <strong>and</strong> Management Harrisburg soils are excellentsoils for agricultural use . <strong>The</strong>y are predominantly used forgrain corn <strong>and</strong> forages ; however, they have good potential forspecialty crops such as apples, beans, peppers <strong>and</strong> tomatoes .<strong>The</strong>re is some use <strong>of</strong> these soils for sod farming in <strong>Brant</strong><strong>County</strong>. <strong>The</strong>ir main limitation to use is susceptibility to watererosion on sloping topography.Heidelberg <strong>Soils</strong> (HIG)General Soil Description Heidelberg soils have developedon glaciolacustrine sediments <strong>of</strong> very fine s<strong>and</strong>y loam<strong>and</strong> loamy very fine s<strong>and</strong> textures . <strong>The</strong>y are imperfectlydrained .Surface Ap horizons <strong>of</strong> Heidelberg soils are about 20 cmthick <strong>and</strong> are very fine s<strong>and</strong>yloam in texture . <strong>The</strong>y have a moderateorganic matter content <strong>of</strong> about 3 to 4% . Brownishcoloured, mottled Bm horizons underlie the surface horizonextending to a depth <strong>of</strong> about 45 cm . <strong>The</strong>y too are very fines<strong>and</strong>y loam in texture . <strong>The</strong> Bt horizons are rather weakly developed<strong>and</strong> are similar in texture to the horizons above . <strong>The</strong>yextend to a depth <strong>of</strong> about 70 cm . Strongly calcareous Ck horizonsoccur below 70 cm <strong>of</strong> very fine loamy s<strong>and</strong> texture . Soilreaction <strong>of</strong> Heidelberg soils is near neutral throughout theupper solum <strong>and</strong> slightly alkaline in the subsoil . Soil classificationreflects transitional development representative <strong>of</strong> bothGleyed Brunisolic Gray Brown Luvisol <strong>and</strong> Gleyed OrthicMelanic Brunisol subgroups .Soil Moisture Characteristics Heidelberg soils areimperfectly drained <strong>and</strong> usually moderately permeable. Subsoilhorizons may be slowly permeable if they are compactedby heavy machinery. Heidelberg soils have a temporary highgroundwater table, but this usually recedes sufficiently early inthe growing season to avoid interfering with root development .<strong>The</strong>y have moderate to good water-holding capacities . Surfacerun<strong>of</strong>f from these soils can be moderately high, especially onsloping topography.Commonly Associated <strong>Soils</strong> Granby (GNY) soils aremost commonly associated with Heidelberg soils as the subdominantcomponent in map unit HIG 2 . <strong>The</strong>y are poorlydrained <strong>and</strong> developed onlacustrines<strong>and</strong> or loamy s<strong>and</strong> parentmaterial .L<strong>and</strong> Use <strong>and</strong> Management Heidelberg soils are goodsoils for agricultural use . Grain corn, spring grain <strong>and</strong> foragesare the common field crops grown on these soils . <strong>The</strong>y are fairto good soils for a range <strong>of</strong> specialty crops, although there is littlecurrent use <strong>of</strong> these soils for this purpose. Artificial drainageis seldom required on these soils, unless moisture-sensitivecrops are grown .Kelvin <strong>Soils</strong> (KVN)General Soil Description Kelvin soils have developed onglacial till <strong>of</strong> silty clay loam <strong>and</strong> silty clay textures . <strong>The</strong>y arepoorly drained .Surface Ap horizons <strong>of</strong>Kelvin soils range from 20 to 25 cmthick <strong>and</strong> usually are silty clay loam in texture. <strong>The</strong>y have highorganic matter contents <strong>of</strong> about 4 to 6% . Prominently mottled Bg horizons underlie the surface horizons to a depth <strong>of</strong> 50to 60 cm . <strong>The</strong>y have slightly higher clay contents than the adjacenthorizons <strong>and</strong> are silty clay intexture . Development <strong>of</strong>massivestructure in this horizon isnot uncommon under cultivatedconditions . <strong>The</strong> Ck horizons also have prominent mottles <strong>and</strong>range in texture from silty clay loam to silty clay. <strong>The</strong>y usually

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