Thursday, July 1, 2010

Sand, Silt or Clay - Soil
















Today was a particularly lovely day in the garden with mild temperatures and plenty of sunshine. All of the gardens are thriving with the great growing conditions and exceptional care provided by the gardeners.


Laurel discovered a small yellow squash and expects more in the near future as the plant has lots of flowers.


Soil was the focus of the class today including soil composition and the many benefits that soil provides plants. including, anchoring roots, providing nutrients, air and water. The lesson continued with an interesting discussion about the 3 soil components of sand, silt and clay and how soil varies from one area to another. Afterwards the young gardeners conducted 2 experiments. The first experiment allowed students to see how clay, silt and sand are separated by adding water . The heavy sand fell to the bottom follow by the silt and lastly the clay.

Next they each took a handful of soil, added a small amount of water and proceeded to evaluate the soil texture as shown in the photo below.



Lenna got a little muddy with the clay she was experimenting with but fortunately it washes off and she didn't mind, too much.






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