 |
 |
Hello Tim, here are some more references: http://www.zef.de/publications, then "Books/Series", there (...ZEF edits three book series...) Ecology and Development Series at Cuvillier Verlag, Göttingen; click this and scroll down to No. 4 (author: Kayuki Crammer Kaizzi) and 2. (author: Dougbedji Fatondji); both articels in PDF. Sorry, the direct link is not working or possible. I am not sure if it is natural abundance-- Hope this helps, Deborah At 15:09 14.06.2005 +0100, you wrote: > Can anyone point me to published information on the effect of >animal/human manure of the NATURAL ABUNDANCE 15N/14N ratio of crop plants? >In particular, comparisons of 15N/14N of manured versus non-manured plants >grown in otherwise identical conditions would be very useful. Thanks. >Tim H.E. Heaton NERC Isotope Geosciences Laboratory >British Geological Survey >Keyworth, Nottingham NG12 5GG, England >(www.bgs.ac.uk/nigl/index.htm) Tel. +44(0)115 936 3401 >Email: [log in to unmask] > ******************** Deborah Rupprecht Institute of Plant Nutrition Karlrobert-Kreiten-Str. 13 53115 Bonn, Germany Phone (+049) 0228-73-3640, -1631 ********************