Performance of loblolly, Virginia, and shortleaf pine on a reclaimed surface mine as affected by Pisolithus tinctorius ectomycorrhizae and fertilization
The effects of an induced Pisolithus tinctorius infection and broadcast fertilization were studied on the survival and growth of loblolly (Pinus taeda), Virginia (Pinus virginiana), and shortleaf (Pinus echinata) pine outplanted on a reclaimed east Tennessee coal surface mine site. The study site had been previously regraded and hydroseeded with a mixture of ground cover species. After six years, the survival and growth of loblolly pine with P. tinctorius ectomycorrhizae were signficantly improved in comparison with control loblolly pine infected by other ectomycorrhizal symbionts. The response of the Virginia pine to the infection by P. tinctorius was negligible after five years. Fertilization at outplanting significantly reduced the survival of both loblolly and Virginia pine. Fertilization of the shortleaf pine at the start of the third growing season did not result in the drastic mortality exhibited by the loblolly pine, and to a lesser extent the Virginia pine, in response to fertilization at outplanting, but this treatment was still detrimental to the survival of the shortleaf pine after five years. There was a marginal improvement in the survival and growth of the shortleaf pine in response to the infection by P. tinctorius. The effect of fertilization on the growth of all three species was negligible, and the increase in mortality associated with this treatment appeared to be primarily the result of increased competition with the ground cover species. These results indicate that the magnitude of the response exhibited by pines on harsh sites to an ectomycorrhizal infection by P. tinctorius is species dependent. Also, broadcast fertilization is inefficient on surface-mined sites where a vegetative ground cover has been established. 11 refs., 3 tabs.
- Research Organization:
- Oak Ridge National Lab., TN (USA); Tennessee Univ., Knoxville (USA). Dept. of Ecology
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6507583
- Report Number(s):
- CONF-8511119-1; ON: DE86002277
- Country of Publication:
- United States
- Language:
- English
Similar Records
Pisolithus tinctorius ectomycorrhizae enhance the survival and growth of Pinus taeda on a southern Appalachian coal spoil
Growth, nutrient absorption, and moisture status of selected woody species in coal-mine spoil in response to an induced infection by the ectomycorrhizal fungus Pisolithus tinctorius
Related Subjects
010900* -- Coal
Lignite
& Peat-- Environmental Aspects
510100 -- Environment
Terrestrial-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
CONIFERS
DATA
EXPERIMENTAL DATA
GRASS
GROWTH
INFORMATION
LAND RECLAMATION
MINING
MORTALITY
MYCORRHIZAS
NUMERICAL DATA
PINES
PLANT GROWTH
PLANTS
PREFERRED SPECIES
REVEGETATION
SHRUBS
SURFACE MINING
TREES