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Soil fertility and conductivityFeatured science projectScience project video

Observation

The results show that loam mixed with fertilizer has the highest electrical conductivity, while sand exhibits the lowest conductivity.
 

Soil type Sand Clay Loam Loam & fertilizer
Miliampere measured 3 3.5 6.5 9

The graph below represents our results:

soil conductivity science fair project

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Complexity level:
5
Project cost ($):
30
Time required:
6 hours for preparation, 1 hour to conduct this science project experiment
Material availability:
Easily found at a hobby store
Safety concerns:

None