Literature
- Carlgren , K. 1995 . “ Hur snabbt sjunker matjordens förmåga att leverera fosfor ” . In Växtnäringsförsök, 1994. Skörderesultat med växt‐ och jordanalyser (Mattsson, L. red.) , Rapport Specialnr. 5 SLU, Inst för markvetenskap, Avd. for växtnäringslära .
- Carlgren , K. and Nilsson , L. G. 1984 . “ Results of two long‐resting field trials at Öjebyn and Flahult ” . Report 157 Uppsala : Swedish University of Agricultural Sciences, Department of Soil Sciences, Division of Soil Fertility . (In Swedish with English summary)
- Dam Kofoed , A. and Nemming , O. 1976 . Askov 1894: Fertilizers and manure on sandy and loamy soils . Ann. Agron. , 27 : 583 – 610 .
- Haak , E. and Simán , G. 1992 . “ Field experiments with liming of mineral soils to different base saturation ” . Report 188 Swedish University of Agricultural Sciences, Dept. of Soil Sciences, Div. of Plant Nutrition . (In Swedish with English summary)
- Haak , E. , Lindén , B. and Persson , P. J. 1994 . “ Nitrogen flow in different cultivation systems ” . In A field experiment at Lanna research Station in south‐west Sweden , Report 194 Swedish University of Agricultural Sciences, Dept. of Soil Sciences, Div. of Plant Nutrition . (In Swedish with English summary)
- Iversen , T. , Halvorsen , N. E. , Mylona , S. and Sandner , H. 1991 . “ Calculated budgets for airborne acidifying components in Europe ” . EMEP/MSC‐W Report 1. Oslo : The Norwegian Meteorological Institute .
- 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 , 18 ( Supplement ) : 9 – 31 . (In Swedish with English summary)
- Jenkinson , D. S. 1991 . The Rothamsted long‐term experiments: Are they still of use? . Agronomy Journal , 83 : 2 – 10 .
- Kirchmann , H. , Persson , J. and Carlgren , K. 1994 . “ The Uituna long‐term soil organic matter experiment, 1956–1991 ” . Swedish University of Agricultural Sciences, Department of soil sciences . reports and dissertations 17
- Körschens , M. and Pfefferkorn , A. 1998 . Der statische Düngungsversuch und andere Feldversuche , UFZ‐Umweltforschungszentrum Leipzig‐Halle GmbH .
- Lagerquist , R. 1969 . “ Rapport från ett långtidsförsök vid Flahult, Jönköpings län. Riks‐rörsöksserie R3–8002, 1904–1965 ” . Rapport 14 Uppsala : Lantbrukshögskolan, avdelningen för växtnärings‐lära .
- Lövblad , G. , Amann , M. , Andersen , B. , Hovmand , M. , Joffre , S. and Pedersen , U. 1992 . Deposition of sulfur and nitrogen in the Nordic countries: present and future . Ambio , 5 : 339 – 347 .
- Mattsson , L. 1987 . “ Long‐term effects of N fertilizer on crops and soils ” . Report 170 Uppsala : Swedish University of Agricultural Sciences. Dept. of Soil Sciences, Division of Soil Fertility . Dissertation
- Mattsson , L. 1993 . “ Mera vall för mullens skull ” . In Sveriges lantbruksuniversitet, Fakta , 8 Mark/växter .
- Mattsson , L. 1998 . P in Swedish long‐term soil fertility experiments . Journal of the Royal Swedish Academy of Agriculture and Forestry , 7 : 69 – 76 .
- Ohlsson , S. 1979 . The long‐term lime trials at Lanna experimental station. Results and conclusions. In: Needs and means of liming of soils, forests and water. Present situation and possibilities of development . Journal of the Royal Swedish Academy of Agriculture and Forestry , 13 ( Supplement ) : 17 – 26 . (In Swedish with English summary)
- Simán , G. , Haak , E. and Mattsson , L. 1993 . “ Erfarenheter från de långliggande kalknings‐försöken ” . In Har markens långsiktiga produktionsförmåga förändrats? Erfarenheter från långliggande försök , Edited by: Eriksson , T. Vol. 66 , 48 – 62 . Kungl. Skogs‐ och Lantbruksakademien, Rapport .
- Address for correspondence: Swedish University of Agricultural Sciences, Dept. of Soil Sciences, Div. of Plant Nutrition and Soil Fertility, P.O. Box 7014, S‐750 07 Uppsala, Sweden.