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Geology Science Fair Project

Soil Quality and Management

Soil Quality and Management | Science Fair Projects | STEM Projects
Let's explore how soil management affects soil quality. We'll compare soil from a forest, a field with conventional farming, and a field with compost added. We'll observe physical properties, measure pH, and test for nitrogen, phosphorus, and potassium.


The hypothesis is that the quality of soil will be affected by the use of conventional farming.

Method & Materials

You will find three soils of the same soil type, observe soil properties, collect samples, dry them, sieve them, and test them for pH, nitrogen, phosphorus, and potassium.
You will need a LaMotte Soil Testing kit, a pH pen and buffers, a Munsell soil color book, a scale, a trowel, a sieve, 100 mL beakers, 100 mL graduated cylinder, and distilled water.


Our results showed that the quality of soil was affected by the use of conventional farming. The pH levels and the levels of nitrogen, phosphorus, and potassium were different in each soil. The bulk density was also different for each soil.

Why do this project?

This science project is interesting because it shows how soil management affects soil quality in a tangible way. It also shows how different soil properties can be measured and compared.

Also Consider

Experiment variations to consider include testing for other soil properties such as organic matter content, earthworm activity, and soil structure. Another variation is to compare soils from different soil types.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

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