Significance of various soil amendments to borrow pit reclamation with loblolly pine and fescue
Loblolly pine seedlings with ectomycorrhizae formed by Pisolithus tinctorius (Pt) or naturally occurring Thelephora terrestris (Tt) were planted on a borrow pit in South Carolina in plots with no amendment; with fertilizer plus dolomitic limestone alone and with pine bark or bottom ash or bark and ash together; or with dried sewage sludge alone and with bark or ash or bark and ash together. All plots were subsoiled, disked, and seeded to fescue grass before planting pine seedlings. Naturally occurring Pt formed abundant ectomycorrhizae on all Tt seedlings by the end of the first season, precluding any specific ectomycorrhizal fungus effect for the duration of the study. Sewage sludge alone or with bark or ash amendments dramatically improved pine seedling growth and grass biomass in comparison with other soil treatments. Mean seedling volume (D/sup 2/H) was 28 times greater and grass biomass was five times greater in the sludge plots than on nonsludge plots. Generally, soil amended with sludge contained more N, P, organic matter, and had a higher cation exchange capacity than soil of other treatments. Foliage of pine seedlings in sludge-amended soil also contained more N and less Ca than other seedlings. The significance of these results to reclamation of borrow pits is discussed.
- Research Organization:
- Inst. for Mycorrhizal Research and Development, Athens, GA
- DOE Contract Number:
- A109-76-SRO-870
- OSTI ID:
- 6703263
- Journal Information:
- Reclam. Rev.; (United States), Vol. 3:2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Growth of containerized loblolly pine with specific ectomycorrhizae after 2 years on an amended borrow pit
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Related Subjects
LAND RECLAMATION
SEEDLINGS
SENSITIVITY
SURFACE MINING
ENVIRONMENTAL EFFECTS
CATIONS
COMPARATIVE EVALUATIONS
CONSTRUCTION INDUSTRY
ECOLOGICAL CONCENTRATION
FERTILIZERS
FUNGI
GRAMINEAE
HUMUS
ION EXCHANGE
NITROGEN
PHOSPHORUS
PINES
PLANT GROWTH
SITE PREPARATION
SLUDGES
SOIL CONSERVATION
SOILS
TERRESTRIAL ECOSYSTEMS
CHARGED PARTICLES
CONIFERS
ECOSYSTEMS
ELEMENTS
GROWTH
INDUSTRY
IONS
MINING
NONMETALS
PLANTS
RESOURCE CONSERVATION
TREES
510500* - Environment
Terrestrial- Site Resource & Use Studies- (-1989)