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Home > All Images > 2003 > November > 19 Nov 2003

Images Dated 19th November 2003

Choose from 18 pictures in our Images Dated 19th November 2003 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.


Soil triangle diagram Featured 19 Nov 2003 Image

Soil triangle diagram

Soil triangle diagram. This diagram is used to work out the type of soil in an area. A sample of soil is left to settle in water. Larger particles settle out of suspension faster than smaller ones. Soil particles are placed in three categories depending on their size: sand (largest), silt and clay (smallest). Once the layers have settled, the depth of the layer is used to work out its percentage as a component of the soil. The three percentages are then read off the axes of the triangle: clay horizontally, silt towards bottom left and sand towards top left. Loams are the best soils for cultivation

© SHEILA TERRY/SCIENCE PHOTO LIBRARY