Results 181 to 190 of about 60,003 (236)

Development of transgenic yellow poplar for mercury phytoremediation

Nature Biotechnology, 1998
We examined the ability of yellow poplar (Liriodendron tulipifera) tissue cultures and plantlets to express modified mercuric reductase (merA) gene constructs. Mercury-resistant bacteria express merA to convert highly toxic, ionic mercury, Hg(II), to much less toxic, elemental mercury, Hg(O).
C L, Rugh, J F, Senecoff, R B, Meagher, S A, Merkle   +3 more
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Yellow Poplar Gasification Over Ni Silicate and Ni/Silica

Journal of Nanoscience and Nanotechnology, 2020
The activity of Ni silicates having different Ni/Si molar ratio (0.5 and 1) and Ni/silica were tested on biomass gasification. Ni silicate (Ni/Si= 0.5) and Ni/silica produced the higher gas yield than Ni silicate (Ni/Si = 1.0). The larger amount of H2 and CO were produced over Ni silicate (Ni/Si = 0.5) and Ni/silica compared those over Ni silicate (Ni/
Abid, Farooq, Heejin, Lee, Gwang Hoon, Rhee, Eun-Bum, Cho, Young-Kwon, Park   +4 more
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Nitrogen Fertilization Decreases Yellow-Poplar Wood Density

Southern Journal of Applied Forestry, 1979
Abstract The effects of nitrogen fertilization on the relative wood density and growth of yellow-poplar (Liriodendron tulipifera L.) were studied over two growth periods. Transmitted gamma rays were used to measure relative wood density. A small but significant decrease in relative wood density was accompanied by diameter, height, basal ...
Donald Ross, Edward Buckner, Harold Core, Frank Woods   +3 more
openaire   +1 more source

Endotrophic Mycorrhizae Influence Yellow Poplar Seedling Growth

Science, 1963
Yellow poplar seedlings infected with endotrophic mycorrhizal fungi grow much faster than seedlings grown without mycorrhizae. A method of pot culture that uses natural soil structure provides an excellent means of studying growth differences due to microorganisms.
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Soil Properties Dominate Yellow-Poplar Seedling Growth

Southern Journal of Applied Forestry, 1987
Abstract Topdressing of urea (224 kg/ha) in combination with Glomus mosseae inoculum produced the largest 1-0 yellow-poplar (Liriodendron tulipifera L.) seedlings of 16 combinations of nursery fertilizer and endomycorrhizal treatments. However, after two years in an outplanting trial, significantdifferences in seedling size due to the ...
Ronald L. Hay, R. David Hammer, John P. Conn   +2 more
openaire   +1 more source

THE LEAF-MINING WEEVIL OF YELLOW-POPLAR

The Canadian Entomologist, 1968
AbstractThe known distribution, biology, and life cycle of the yellow-poplar leaf-mining weevilOdontopus calceatus(Say) are presented. Illustrations of mature larva, larval head capsule, and pupa, and the damage to the leaves of yellow poplar, are given.
Denver P. Burns, Lester P. Gibson
openaire   +1 more source

Microsite and Height Growth of Yellow-Poplar

Forest Science, 1968
Abstract Size of individual trees in an 18-year-old yellow-poplar, plantation varied with location in the stand. The 2.1-acre study area is at the down-slope end of an old field that had been abandoned from agriculture at least 10 years prior to being planted with yellow-poplar.
A. R. Gilmore, W. A. Geyer, W. R. Boggess   +2 more
openaire   +1 more source

Yellow-Poplar: A Component of Climax Forests?

Journal of Forestry, 1978
Abstract Although classed as intolerant and requiring exposed mineral soil for vigorous regeneration, yellow-poplar (Liriodendron tulipifera L.) has long been considered a dominant in climax stands on good sites in the southern Appalachians. More in keeping with its silvical traits is its role as an aggressive pioneer on disturbed sites.
Edward Buckner, Weaver McCracken
openaire   +1 more source

A New Virus Disease of Yellow-Poplar

Plant Disease, 1996
Viruslike symptoms were observed on leaves of yellow-poplar (Liriodendron tulipifera) near the New River in Ashe County, North Carolina, in June 1987. Similar symptoms were seen in Oconee County, South Carolina, in 1988, and in Pickens County, South Carolina, in 1991.
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Collection of Yellow-Poplar Seed-Heads by Shaking

Northern Journal of Applied Forestry, 1987
Abstract Yellow-poplar seed-heads can be collected successfully by shaking using a standard Shock Wave Shaker. In the first year of this trial the average percentage shaken was 64 per tree, varying from a low of 24 to a high of 95.
Franklin C. Cech, Roy N. Keys
openaire   +1 more source