Ammonium Nitrogen Accumulation and Leaching from an All Pine Bark Medium1

in HortScience
Authors:
Steve ThomasAuburn University Agricultural Experiment Station, Auburn University, AL 36849

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Fred B. Perry Jr.Auburn University Agricultural Experiment Station, Auburn University, AL 36849

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Abstract

When a 200 ppm N solution as (NH4)2SO4 was percolated through a wet pine bark medium, 6 times the medium volume of the N solution was required to reach an equilibrium of N in the bark. Once equilibrium was reached, the water added, leaching of the ammonium ion was rapid. When twice the medium volume of water was passed through the medium, 85% of the ammonium ions were leached. After analysis of the leachate indicated no N being leached from the bark, 60 ppm of N remained in the bark.

Contributor Notes

Received for publication March 15, 1980.

The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper must therefore be hereby marked advertisement solely to indicate this fact.

Form er Graduate Research Assistant, present address: 126 N. Greenfield Ave, Temple Terrace, FL 33617.

Associate Professor, Department of Horticulture.

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