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Staff in the lab prepare samples for testing.

Virginia Tech’s Soil Testing Lab

The Virginia Tech Soil Testing Lab, affiliated with the School of Plant and Environmental Sciences and Virginia Cooperative Extension, analyzes soil samples submitted by the public and university researchers. 

Tests are performed to evaluate the soil’s nutrient potential and to determine the most beneficial application rates of fertilizer and lime for optimum plant growth.

Routine testing includes analysis of nine elements, plus soil pH and estimated CEC. The lab also performs soluble salts and organic matter tests. Samples are analyzed and computer recommendations are generated, typically within three days.

Year operations started

1938

Samples tested annually

50,000+

Average number of smaples received each March

10,000

Gallons of liquid argon
used each year

1,000

Lawn samples testing low
in phosphorus

1 in 6

Percentage of garden samples with too much lime

34

Staff in the lab prepare samples for testing.
Testing underway in the lab.