# The proportions of what three particles are used to...

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SOIL ANALYSIS LAB "Its a Small World After All" Title: Soil Analysis in Sparse and Diverse Ecosystems Purpose: To measure the differences between the soil in sparse and diverse ecosystems. Data Tables: Diverse Soil Texture Soil Cm % Sand 0.5 cm 45% Silt 0.2 cm 18% Clay 0.4 cm 36% Soil Type= Sandy Clay Loam Sparse Soil Texture Soil Cm % Sand 0.6 cm 40% Silt 0.5 cm 33% Clay 0.4 cm 27% Soil Type= Clay Loam Soil Nutrients/ pH Factor Diverse Sparse pH 7 7 Nitrogen Low- <30 lb/A Low 40 lb/A Phosphorus Medium- 20 lbs/A 42 lbs/A Potassium Low- 40 lbs/A High 160 lbs/A Overall Comparative Analysis: Overall the sparse had less nutrients than the diverse soil soil. The ph was the same for both samples. This could because “some possible sources of error in the experiment are that the soil was left uncovered and it is possible that organic/inorganic material was added or lost. Even pH could be affected by moisture in the room. Also, results could be tainted by how well the soil sample settled. he dividing line between the sand, silt, and clay was not distinct. Therefore the percentages of sand, silt, and clay are very rough estimates. The capsules containing the chemicals in the soil test kit were hard to open carefully. As a result, not all of the powder made it into the container.” (Question 9). The sparse soil had more silt, less clay, and less sand percentage than the diverse soil.
Conclusion Questions #1-11 1. The proportions of what three particles are used to determine soil texture? Which of these particles has the smallest surface area? Which has the largest?