Interactive Influences of Fertility and Nodulation on Growth, Nutrition, and Water Relations of European Alder in a Mine Soil
| Autor: | R. F. Walker, D. C. West |
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| Rok vydání: | 2005 |
| Předmět: | |
| Zdroj: | Journal of Sustainable Forestry. 20:83-104 |
| ISSN: | 1540-756X 1054-9811 |
| Popis: | Actinorhizal nodulation of European alder (Alnus glutinosa[L.] Gaertn.) as influenced by substrate fertility was assessed for its effects on seedling growth and physiology. After a brief period in seed flats, seedlings were transplanted to a mine soil where they resided for 18 months, and three fertility regimes were imposed by application of differing nutrient solution concentrations while two distinct levels of nodulation were created through methyl bromide fumigation. Ultimately, seedlings in nonfumigated soil had > 5Xthe nodules of those grown in fumigated soil, and rising fertility stimulated nodule formation in the former. Heavy nodulation resulted in a 35% increase in shoot mass and a 60% increase in root mass on average, responses that exceeded those to fertilization for the latter. Seedlings with abundant nodules had higher foliar concentrations of total N, NO3, K, and Cu and lower concentrations of Ca, Mg, S, Fe, Mn, Zn, Mo, and Al overall, than were found in those with minimal nodulati... |
| Databáze: | OpenAIRE |
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