In 2008 Harvard Yard soil restoration project started.
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Field Analysis & Lab Results of 2008 of soil sample
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Field Analysis
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Water percolation was satisfactory across all three areas tested.
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Measured pH ranged from 6.2 to 6.4.
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Significant compaction zone identified 2” – 6” below soil surface
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Roots measured in both the Test Plot and Control Plot consistently reached a depth of 2”.
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Lab Results
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Relatively low organic matter content, avg. 4.6%.
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Elevated bacteria levels Insufficient numbers of predators (protozoa), and inadequate fungal colonization.
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Soil creating just 25 to 50 lbs. of nitrogen per acre (typical healthy level is 150 lbs. per acre.)
© 2009 President and Fellows of Harvard College
To activate the object please place the solar panels in direct sunlight.
! Warning object may move or rotate !
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Feel free to update the changes of the core by submitting a photo to randima.rodrigo@gmail.com
Soil Cores collected May1st 2025, Plexiglass, Harvard soil, Sola panel, Vibrator, Led light
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