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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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Soil Moisture Characteristics Gobles soils are imperfectlydrained . <strong>The</strong>y are moderately to slowly permeable.Groundwater rises within the B horizons <strong>of</strong> Gobles soils fortemporary periods each year . <strong>The</strong>y have high water-holdingcapacities <strong>and</strong> surface run<strong>of</strong>f is also relatively high .Commonly Associated <strong>Soils</strong> Muriel (MUI), Kelvin(KVN) <strong>and</strong> Colwood (CWO) soils . are commonly associatedwith Gobles soils as subdominant components in map unitsGOB 4, GOB 3 <strong>and</strong> GOB 13, respectively. Muriel <strong>and</strong> Kelvinsoils are moderately well <strong>and</strong> poorly drained, respectively, withsoil materials similar to Gobles . Colwood soils are poorlydrained, but occur on deep silt loam materials.L<strong>and</strong> Use <strong>and</strong> Management Gobles soils are good agriculturalsoils for general field crops . Grain corn, hay <strong>and</strong>spring grains are the most common crops on these soils . <strong>The</strong>iruse <strong>and</strong> productivity is usually enhanced with tile drainage. Ofthe specialty crops, soybeans are occasionally produced onGobles soils, <strong>and</strong> they are fairly well-suited to this use .Granby <strong>Soils</strong> (GNY)General Soil Description Granby soils have developedon glaciolacustrine materials with textures <strong>of</strong> s<strong>and</strong> <strong>and</strong> loamys<strong>and</strong> . <strong>The</strong>y are poorly drained .Surface Ap horizons <strong>of</strong>Granby soils are about 20 cm thickconsisting <strong>of</strong> s<strong>and</strong>y loam or loamy s<strong>and</strong> textures . <strong>The</strong>y are normallyquite high in organic matter content, <strong>and</strong> peaty surfacehorizons are not uncommon . This is the usual situation inwooded sites . Thin A or B horizons with prominent mottles<strong>and</strong> gleyed colours usually occur between 20-25 cm depth . Thisoverlies prominently mottled Btg horizons extending fromabout 25 to 60 cm . <strong>The</strong>y have a slight increase in clay content,<strong>and</strong> textures <strong>of</strong>s<strong>and</strong>y loam . Granby Ck horizons occur at variabledepths ranging from 50 to more than 100 cm . <strong>The</strong>ir carbonatecontents also tend to be variable <strong>and</strong> calcareousnessranges from weakly to strongly calcareous, the latter conditionusually occurring with increasing depth. Soil reaction <strong>of</strong>Granby soils ranges from strongly acidic or neutral in the surfacehorizons to mildly alkaline in the subsoil . Soil classificationis usually Humic Luvic Gleysol in <strong>Brant</strong> <strong>County</strong>.Elsewhere, it is usually Orthic Humic Gleysol .Soil Moisture Characteristics Most Granby soils arepoorly drained, except for some peaty phase Granby soilswhich are very poorly drained . <strong>The</strong>y usually are rapidly permeable . Most horizons are saturated by groundwater for long periodseach year unless artificially drained . Granby soils havelow water-holding capacities <strong>and</strong> slow surface run<strong>of</strong>f.Commonly Associated <strong>Soils</strong> Brady (BAY) <strong>and</strong> Stayner(STN) soils are commonly associated with Granby soils as subdominantcomponents in map units GNY 4 <strong>and</strong> GNY 10,respectively. Brady soils are imperfectly drained, with soilmaterials similar to Granby. Stayner soils are very poorlydrained <strong>and</strong> occur in depressional areas where 40 to 100 cm <strong>of</strong>organic materials have accumulated over the s<strong>and</strong> .L<strong>and</strong> Use <strong>and</strong>Management Granby soils in their naturalcondition are relatively poor soils for agricultural use because<strong>of</strong> wetness limitations . A large portion <strong>of</strong> them still occur inundrained forested swamps in <strong>Brant</strong> <strong>County</strong>. On cleared areas,undrained Granby soils can be used for pasture. Where artificialdrainage has been established, Granby soils are well-suitedfor grain corn, soybeans, tobacco <strong>and</strong> some commercial vegetablecrops .Guelph <strong>Soils</strong> (GUP)General Soil Description Guelph soils have developedon glacial till, mainly <strong>of</strong> loam texture . <strong>The</strong>y are well-drained .Surface Ap horizons <strong>of</strong> Guelph soils are about 20 cm thick<strong>and</strong> are low to medium in organic matter content . <strong>The</strong>y areusually loam or silt loam in texture . Brownish-coloured Bmhorizons underlie the surface horizon to a depth <strong>of</strong> 35 to 45 cm .<strong>The</strong>y also are loam or silt loam in texture. <strong>The</strong>se horizons maybe absent on slopes where surface erosion has occurred, as theyhave been incorporated by plowing into the Ap horizon . Distinctivedark-brown Bt horizons usually occur at a depth rangingfrom 35 to 70 cm . <strong>The</strong>y have a pronounced increase in claycontent <strong>and</strong> are usually loam to clay loam in texture . <strong>The</strong>sehorizons <strong>of</strong>ten have awavy, tongueing boundary with underlyingCk horizons . Ck horizons occur at variable depths, withthe mean depth being 60 to 70 cm . <strong>The</strong>y are generally loam intexture <strong>and</strong> are strongly calcareous . Soil reaction <strong>of</strong> Guelphsoils ranges from near neutral in the surface horizons to moderatelyalkaline in the subsoil . Soil classification is BrunisolicGray Brown Luvisol .Soil Moisture Characteristics Guelph soils are welldrained. <strong>The</strong>y are moderately permeable <strong>and</strong> have mediumwater-holding capacities . Surface run<strong>of</strong>f can be moderatelyhigh <strong>and</strong> it increases markedly as slope increases, <strong>and</strong> as theorganic matter content <strong>of</strong> the surface horizon decreases .Commonly Associated <strong>Soils</strong> London (LOD), Woolwich(WOW), Colwood (CWO) <strong>and</strong> Scotl<strong>and</strong> (STD) soils are commonlyassociated with Guelph soils as subdominant components in map units GUP 2, GUP 4, GUP 6 <strong>and</strong> GUP 7,respectively. London soils are imperfectly drained with soilmaterials similar to Guelph soils . Woolwich soils are welldrained,<strong>and</strong> have a surficial veneer <strong>of</strong> silt overlying the loamtill <strong>of</strong> the Guelph soils . Colwood soils are poorly drained <strong>and</strong>consist <strong>of</strong> silty deposits in excess <strong>of</strong> 100 cm in depth . Scotl<strong>and</strong>soils are rapidly drained, <strong>and</strong> are characterized by s<strong>and</strong>y texturesoverlying gravelly loam glacial till . .L<strong>and</strong> Use <strong>and</strong> Management Guelph soils are good soilsfor agricultural use. <strong>The</strong>y are commonly used for field cropssuch as grain corn, hay, winter wheat <strong>and</strong> spring grains .Recently, specialty crops such as soybeans have appeared onGuelph soils . <strong>The</strong> only limitations <strong>of</strong> significance affecting theuse <strong>of</strong> Guelph soils for field crops are topography <strong>and</strong> past erosion. Complex slopes exceeding 3 °Io have a slight topographiclimitation . This limitation becomes more severe as slopeincreases . Hummocky or rolling topography may also havemoderate to severe erosion limitations due to loss <strong>of</strong> topsoil bywater erosion .Haldim<strong>and</strong> <strong>Soils</strong> (HIM)General Soil Description Haldim<strong>and</strong> soils have developedon glaciolacustrine sediments <strong>of</strong> clay or heavy clay textures. <strong>The</strong>y are imperfectly drained .Surface Ap horizons <strong>of</strong> Haldim<strong>and</strong> soils are about 20 cmthick <strong>and</strong> silty clay loam or silty clay in texture . <strong>The</strong>y are moderatelyhigh in organic matter, ranging from 4 to 6 016 . <strong>The</strong> Bmhorizons underlying the surface horizon are prominently mottled<strong>and</strong> generally silty clay in texture . <strong>The</strong>y extend to an averagedepth <strong>of</strong> about 40 cm . <strong>The</strong> Bt horizons normally havedistinctive prismatic <strong>and</strong> angular blocky structure. In cultivatedfields, they <strong>of</strong>ten have compacted <strong>and</strong> amorphous structure. Soil texture usually is silty clay or clay. <strong>The</strong> Ck horizons

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