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Phosphorus-31-nuclear magnetic-resonance spectroscopy to trace organic dung phosphorus in a temperate grassland soil

Title data

Bol, Roland ; Amelung, Wulf ; Haumaier, Ludwig:
Phosphorus-31-nuclear magnetic-resonance spectroscopy to trace organic dung phosphorus in a temperate grassland soil.
In: Journal of Plant Nutrition and Soil Science. Vol. 169 (2006) Issue 1 . - pp. 69-75.
ISSN 1436-8730
DOI: https://doi.org/10.1002/jpln.200521771

Abstract in another language

Cattle dung contributes to hot-spot inputs of nutrients to grassland systems, but not much is known about its organic P (Po) composition and fate in the grassland soils. We used 31Phosphorus (P)-Nuclear Magnetic-Resonance (NMR) spectroscopy of alkaline soil extracts to examine potentials for tracing of different functional Po forms into a temperate grassland soil amended with dung. The proportion of monoester, DNA-diester, and phospholipid+teichoic acid P were comparable in dung extracts, but the soil was dominated by monoester P. The temporal trends in the DNA-diester P-to-monoester P (DDNAM) and diester P-to-monoester P (DM) ratio of dung, native soil, and soil amended with dung were monitored in the 70 d field experiment. The DDNAM and DM ratio in the dung-amended soil (0-1 and 1-5 cm depth) were always intermediate between the dung and (unamended) control soil. Clearly, extracted soil P was a mixture of incorporated dung-derived P and native soil P. The dung-P contribution in the 0-1 cm samples peaked at 47% of the total extracted P at day 70 and at 15% after 42 d in the 1-5 cm soil depth (based on the DM ratio). The proportions of dung-derived P and C in the soil were positively correlated with: 1) topsoil, using the DDNAM ratio (r2 = 0.975), and 2) top- and subsoil, using the DM ratio (r2 = 0.656). We concluded that our DDNAM and DM-P ratios approach (obtained from solution-31P NMR) did trace successfully the short-term dynamics and fate of dung Po in soil. It indicated that dung-derived Po varied as rapidly in soil as the dung-derived C.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER50540
Keywords: phosphorus; nuclear magnetic-resonance spectroscopy; dung; grassland; soil; tracing
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 11 Sep 2015 06:33
Last Modified: 11 Sep 2015 06:33
URI: https://eref.uni-bayreuth.de/id/eprint/19157