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Published in J Environ Qual 15:351-356 (1986)
© 1986 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Wastewater Renovation in a Slash Pine Plantation Subjected to Prescribed Burning1

Jane T. Red and Wade L. Nutter

ABSTRACT

Two experimental areas were established in an underdrained 16-yr-old slash pine (Pinus elliottii Mor.) plantation land treatment system receiving 2.5 cm/week of secondarily treated domestic wastewater. One of the experimental areas was subjected to a prescribed burn as a forest management practice. A high degree of wastewater renovation was achieved and the prescribed burn had no significant effect on wastewater renovation. Forest floor storage of K, Ca, Mg, and P was significantly increased from pretreatment levels due to wastewater irrigation. Prescribed burning had no effect on forest floor nutrient storage. Soil concentrations of total and available P, Ca, Mg, and K increased significantly in the surface soil horizon due to wastewater irrigation. Additional increases in the surface soil horizon of total P, Ca, Mg, and K concentration occurred due to burning. Wastewater irrigation resulted in significant reductions in soil acidity and total-Kjeldahl N concentration in the surface horizon. Prescribed burning altered species composition and density of the understory. No significant differences in overstory nutrient storage were observed due to treatment.

Key Words: land treatment • wastewater irrigation • artificial drainage • Pinus elliottii Mor.

NOTES

1 Contribution from School of Forest Resources, Univ. of Georgia, Athens, GA 30602.

2 Research Coordinator and Associate Professor, School of Forest Resources, Univ. of Georgia, Athens, GA 30602.

Received for publication August 19, 1985.




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