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  1. No Access

    Article

    Soil C balance in a long-term field experiment in relation to the size of the microbial biomass

    Soil C balances were calculated in a field experiment started in 1956. Treatments include a fallow and soils receiving different N fertilizers or organic amendments. By assuming the absence of a priming effect...

    E. Witter in Biology and Fertility of Soils (1996)

  2. No Access

    Chapter

    Towards zero accumulation of heavy metals in soils

    Sweden has recently introduced new guidelines for the agricultural use of sewage sludge which contain successively more restrictive metal loading rates for soils. At the same time further efforts are made to r...

    E. Witter in Fertilizers and Environment (1996)

  3. No Access

    Article

    Towards zero accumulation of heavy metals in soils

    Sweden has recently introduced new guidelines for the agricultural use of sewage sludge which contain successively more restrictive metal loading rates for soils. At the same time further efforts are made to r...

    E. Witter in Fertilizer research (1995)

  4. No Access

    Chapter and Conference Paper

    Effects of Acidification and Repeated Sewage Sludge Application on C Utilization by Soil Microorganisms

    A low biomass C to soil organic C ratio under steady-state conditions may indicate that soil microorganisms are subjected to environmental stress. A low biomass C to soil C ratio was found in long-term peat, [...

    S. Dahlin… in Integrated Soil and Sediment Research: A Basis for Proper Protection (1993)

  5. No Access

    Article

    Ammonia volatilization during aerobic and anaerobic manure decomposition

    Ammonia volatilization, nitrogen immobilization, carbon decomposition and formation of volatile fatty acids was investigated in a laboratory incubation experiment with fresh poultry manure, to which increasing...

    H. Kirchmann, E. Witter in Plant and Soil (1989)

  6. No Access

    Article

    Effects of addition of calcium and magnesium salts on ammonia volatilization during manure decomposition

    Ammonia volatilization during aerobic decomposition of poultry manure was significantly reduced through additions of calcium and magnesium salts. The percentage reduction in ammonia loss decreased during the 4...

    E. Witter, H. Kirchmann in Plant and Soil (1989)

  7. No Access

    Article

    Peat, zeolite and basalt as adsorbents of ammoniacal nitrogen during manure decomposition

    The effectiveness of sphagnum peat, zeolite (clinoptilonite) and basalt in reducing ammonia losses during aerobic manure decomposition was determined in an incubation experiment. Peat placed in the spent air-s...

    E. Witter, H. Kirchmann in Plant and Soil (1989)

  8. No Access

    Article

    Hämoperfusion bei Flecainidintoxikation

    A 79-year-old patient, who had received a pacemaker after suffering two posterior myocardial infarctions, was treated with 2 × 100 mg flecainide daily for 9 days for ventricular extrasystoles (Lown IV b). On a...

    R. Wurzberger, E. Witter, H. Avenhaus, H. Hennemann… in Klinische Wochenschrift (1986)