Soil columns from an abandoned grass-land were extracted by Charles Lynch (Biological Science Technician) and Edward Lester (Agricultural Science Research Technician) for use in a greenhouse study to evaluate effects of goat urine and limestone on nitrogen transformations.

The study details are available at:
Ritchey, K. D., D. G. Boyer, K. E. Turner, J. D. Snuffer. 2003.
Surface Limestone Application Increases Ammonia Volatilization from Goat Urine in Abandoned Pastures. Journal of Sustainable Agriculture, 23(2):111-125.

Photo by K. Dale Ritchey