This field experiment investigated how C from fresh organic amendments and from a growing leek cr... more This field experiment investigated how C from fresh organic amendments and from a growing leek crop was allocated into different soil microbial and faunal groups in an arable field. A 13C-enriched red clover green manure was incorporated in one treatment, while the growing leek crop was pulse labelled with 13CO2 in another. Incorporation of 13C into microbial fatty acids, micro-
In a field experiment with leek, four forms of green manuring with red clover were compared; dire... more In a field experiment with leek, four forms of green manuring with red clover were compared; direct incorporation, biogas residue, compost and green mulch. The application rates were based on concentrations of nitrogen (N) and carbon (C) in the clover roots and shoots in the direct incorporation treatment, and the N-availability. A practically appropriate mulch application rate was included for
Fresh and anaerobically digested red clover were compared as N and S sources in a incubation expe... more Fresh and anaerobically digested red clover were compared as N and S sources in a incubation experiment without plants and a pot experiment with white cabbage, both conducted in climate chambers. The hypothesis was that anaerobic digestion would increase S availability in relation to N and that arylsulphatase activity would be higher in treatments with S deficiency. Besides the two
This field experiment investigated how C from fresh organic amendments and from a growing leek cr... more This field experiment investigated how C from fresh organic amendments and from a growing leek crop was allocated into different soil microbial and faunal groups in an arable field. A 13C-enriched red clover green manure was incorporated in one treatment, while the growing leek crop was pulse labelled with 13CO2 in another. Incorporation of 13C into microbial fatty acids, micro-
In a field experiment with leek, four forms of green manuring with red clover were compared; dire... more In a field experiment with leek, four forms of green manuring with red clover were compared; direct incorporation, biogas residue, compost and green mulch. The application rates were based on concentrations of nitrogen (N) and carbon (C) in the clover roots and shoots in the direct incorporation treatment, and the N-availability. A practically appropriate mulch application rate was included for
Fresh and anaerobically digested red clover were compared as N and S sources in a incubation expe... more Fresh and anaerobically digested red clover were compared as N and S sources in a incubation experiment without plants and a pot experiment with white cabbage, both conducted in climate chambers. The hypothesis was that anaerobic digestion would increase S availability in relation to N and that arylsulphatase activity would be higher in treatments with S deficiency. Besides the two
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