- Alexandersson , S. , Karlström , C. and Larsson-McCann , S. 1991 . Temperaturen och nederböden i Sverige 1961-1990. Referensnormaler . SMHl Report 81 ,
- Carlgren , K. and Mattsson , L . 2001 . Swedish soil fertility experiments . Acta Agriculture Scandinavica, Sect. B, Soil and Plant Sci , 51 : 49 – 78 .
- Erieson , L and Mattsson , L. 2000 . “ Soil and crop management impact on SOC and physical properties of soils in northern Sweden ” . In Global Climate change and cold regions ecosystems , Edited by: R. LaI , J.M. and Kimble , B.A. Stewart . 123 – 135 . Advances in Sou Science .
- Hansson , A-C. 1987 . Roots of Arable crops: production, growth dynamics and ntirogen content , Swedish University of Agricultural Sciences, Dept. of Ecology and Environmental Research . Report 28
- Honeycutt , C.W. and Potaro , L.J. 1990 . Field evaiuation of heat units for predicting crop residue carbon and nitrogen mineralization . Plant and soil , 125 : 213 – 220 .
- Jansson , S.L. 1986 . Soil biology -- plant production -- fertility studies. The crop residues as a component of soil fertility . Journal of the Royal Swedish Academy of Agriculture and Forestry , : 9 – 31 . in Swedish with English summary)
- Jenkinson , D.S. , Harkness , D.D. , Vance , E.D. , Adams , D.E. and Harrison , A.F. 1992 . Calculating net primary production and annual input of organic matter to soil from the amount and radiocarbon content of soil organic matter . Soil-Biol-Biochem, Vol , 24 ( 4) : 295 – 308 .
- Kirchmann , H. , Persson , J. and Carigren , K. 1994 . The Ultuna long-term soil organic matter experiment 1956-1991 , Uppsala : Swedish University of Agricultural Sciences, Dept. of Soil Sciences . Reports and Dissertations 17
- Körsehens , M. 1994 . Der Statische Düngungsversuch Bad Lauchstädt nach 90 Jahren. Einflubß der Düngung auf Boden , Stuttgart, Leipzig : Pflanze und Umwelt. B.C. Teober Verlagsgesellschaft .
- Körschens , M. and Weigel , A. 1996 . “ The evidence of carbon dynamics in soil,investigation in pot and model experiments ” . In Resource management in fragile environments , Edited by: R.K. Behl , A.P. , Gupta , A.L. and Khurana , & A. Singh . 123 – 132 . New Delhi : CCS HAU, Hisar & MMB .
- McDonagh , IK , Birch Thomsen , T. and Magid , J. 2001 . Soil organic matter decline and compositional change associated with cereal cropping in southern Tanzania . Land Degradation & Development , 12 ( 1) : 13 – 26 .
- Mercik , S. , Körschens , M. , Bielawski , A.W. , Russel , S. and Rumpel , J. 1995 . Ammonification, nitrification activity and soil respiration intensity as affected by long-term fertilization and soil type . Annals of Warsaw Agricultural University-SGCW, Agriculture , 29 : 27 – 35 .
- Persson , J and Kirehmaim , H. 1994 . Carbon and nitrogen in arable soils as affected by supply of N fertilizers and organic manures . Agriculture, ecosystems and environment , 51 : 249 – 255 .
- Uhlen , G . 1976 . Effect of nitrogen, phosphorus and potassium fertilizers and farm manure in long-term experrnents with rotation crops in Norway . Annales Agronomiques , 27 : 547 – 564 .
- Weigel , A. , Klimanek , E.-M , Körschens , M and Mercik , S. 1998 . “ Investigations of carbon and nitrogen dynamics in different long-term experiments by means of biological soil properties In; Soil processes and the carbon cycle ” . Edited by: LaI , R. , Kimble , J. , Folleti , R. and Stewart , B. 335 – 343 . CRC Press Boston
Archives of Agronomy and Soil Science
Volume 48, 2002 - Issue 2