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P50INFLUENCE OF HYDROCARBON-CONTAMINATED SOILS ON GERMINATION AND GROWTH OF VARIOUS PLANTS |
D.G. Vaugan, and D.H. Rickerl, Plant Science Department, South Dakota State University, Brookings, SD 57007 |
The use of plants and microorganisms to degrade hydrocarbons in contaminated soil could be less hazardous to the environment than the current method of burying the soil in a landfill. We are conducting a study to determine the effectiveness of various plant species and soil amendments for treating hydrocarbon-contaminated soils.
Germination of 34 plant species was compared in a greenhouse study using hydrocarbon-contaminated soil (HCS), hydrocarbon-contaminated soil plus 10% compost (HCS&C) (on a dry weight basis), uncontaminated soil(BS), and uncontaminated soil plus 10% compost(BS&C). HCS reduced germination of Trifollum hybridum (alsike clover) by up to 20%; however, HCS increased germination of Pisum sativum arvense (field pea), Vicia villosa (hairy vetch), Glycine max (soybean), and Panicum virgatum L. ( switchgrass). Eight species were selected for ongoing studies to determine the effects of hydrocarbon-contaminated soil on plant growth and soil microbe populations. Data will be presented for plant dry matter production, microbial MPN, and total hydrocarbon degradation. Key words: hydrocarbon contaminated soil, bioremediation
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Send comments on the Great Plains/Rocky Mountain HSRC web pages to: hsrc@engg.ksu.edu;
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