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Research article - Peer-reviewed, 1996

Agricultural improvement of cultivated organic soils I. Effects of deep cultivation, liming, irrigation and P-fertilization on crop yields

Berglund, Kerstin


Four field experiments were carried out on cultivated shallow fen pear overlying acid gyttja (lake mud) soil. The accessibility of the generally ample supply of physically available water was restricted by a limited root depth caused by low pH and high levels of aluminium in the subsoil. In order to improve the nutrient status and the crop water supply of the soils liming, deep cultivation, P-fertilization and irrigation were tested in field experiments comprising these four main treatments and their combinations. Liming and P-fertilization of the topsoil, irrigation and deep cultivation in combination with deep liming improved crop yields. Deep cultivation without liming had a negative effect on yield in most years.


organic soils; gyttja; deep ploughing; liming; irrigation; phosphorus fertilizers; Sweden

Published in

Soil Use and Management
1996, volume: 12, number: 4, pages: 169-175

Authors' information

Swedish University of Agricultural Sciences, Department of Soil Sciences

UKÄ Subject classification

Soil Science

Publication Identifiers


URI (permanent link to this page)