Oct 6 Soil Colour

Slide 1 Soil Colour Slide 2 Soil Colour Black/brown: very rich in humus and other decayed organic matter Slide 3 Soil Colour Red or Orange: Iron in well-drained soil “oxidized iron” Slide 4 Soil Colour White: leached soils soils without iron presence of limestone quartz is white or grey (indicates parent material) Slide 5 Soil Colour Blue or Dull Gray: Iron in very slow draining soil or seasonal high water tables Slide 6 Soil Colour Mottled: Multi-coloured or a change in soil colour indicates a fluctuation drainage Slide 7 Soil Colour Grassland soils which dominate the southern prairie region of the province dark-coloured A horizons brownish-coloured B horizons light-coloured C horizons with lime carbonate accumulation. Slide 8 Soil Temperature Slide 9 Soil Temperature Plants sensitive to extreme changes in soil temperature. Planting determined by soil temperature Soil microbes affected by soil temperature Slide 10 What affects Soil temperature Mulch/ cover crop vs bare soil Moisture Exposure Compoaction Texture Organic matter Depth