Comparison of sludge and fertilizer applications on establishment and growth of seedlings of two sweetgum ecotypes endomycorrhizal with Glomus mosseae and Glomus etunicatus. Progress report

Technical Report · Wed Dec 31 23:00:00 EST 1980

OSTI ID:6448166

Kormanik, P P

Three different field trails are ongoing. The first study involves effects of sludge and fertilizer applications on the development of sweetgum progeny from 2 mother trees, each representing a different ecotype. Differences in overall survival exist between the 2 ecotypes (56.7% and 71.3%). Survival differences among the seedlings of both ecotypes in the fertilizer treatment were 58%, sludge 66% and control 73%. These figures are due to the differences in grass competition that developed across treatments. In study 2, grass competition was controlled and one level of fertilizer was used for all ecotypes and VAM symbionts. Pooling of data showed that VA seedlings were taller than non-VA seedlings. The third experiment compares root-collar diameter of progeny of 2 different sweetgum mother trees under uniform fertilizer treatment. Data suggest that root-collar diameter of mycorrhizal seedlings is a good indicator of future vigor. (MF)

• Research Organization: Forest Service, Athens, GA (USA). Inst. for Mycorrhizal Research and Development
• DOE Contract Number: AI09-76SR00870
• OSTI ID: 6448166
• Report Number(s): SRO-870-18; ON: TI85002220
• Country of Publication: United States
• Language: English

Related Subjects

560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
COMPARATIVE EVALUATIONS
FERTILIZERS
MYCORRHIZAS
PLANTS
SEEDLINGS
SEWAGE
SEWAGE SLUDGE
SLUDGES
SURVIVAL CURVES
TREES
WASTES