References
- Carlgren , K. and Mattsson , L. 1999 . Swedish soil fertility experiments , Uppsala, , Sweden : Swedish University of Agricultural Sciences, Dept. of Soil Sciences . In press. Authors address P. O. Box 7014 S‐750 07
- Ivarsson , K. and Bjarnason , S. The long‐term soil fertility experiments in southern Sweden. I. Background, site description and experimental design . Acta Agric. Scand. , 38 137 – 143 .
- Jansson , S. L. 1983 . “ Twenty‐five years of soil fertility studies in Sweden ” . report 151 29 Swedish University of Agricultural Sciences, Dept. of Soil Sciences, Div. of Soil Fertility . (In Swedish)
- SAS institute . 1990 . SAS/STAT Users Guide , Cary, NC : Release 6.03. SAS Inst. Inc. . 27513. U.S.
- Address for correspondence: Dept. of Soil Sciences, Div. of Soil Fertility, Swedish University of Agricultural Sciences, P.O. Box 7014, Uppsala, S‐750 07 Sweden.