ISSN:
1573-1561
Keywords:
allelopathy
;
competition
;
fescue
;
sweetgum growth
;
plant leachates
;
mineral adsorption
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Abstract The height growth of field-planted sweetgum (Liquidambar styraciflua L.) seedlings was reduced where residual fescue (Festuca arundinacea Shreb. Var. Ky. 31) from previous agricultural experimentation was present. Interference (competition+allelopathy) effects of fescue on the growth of sweetgum were tested in the greenhouse. Fescue seeded into pots containing sweetgum seedlings resulted in dry weight reduction of sweetgum from 29 to 95%. Elimination of the competitive effect through the use of a stairstep apparatus implicated an allelopathic mechanism in the interference of sweetgum growth by fescue. Leachates from the rhizosphere of live fescue, dead fescue roots, and dead fescue leaves resulted in reduction up to 60% in dry matter production of sweetgum seedlings. Chemical analysis of sweetgum seedlings from the stairstep experiment suggested impaired adsorption of phosphorus and nitrogen by seedlings treated with fescue leachates.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00988812
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