Control

soda_20170202

The use of antibiotics is not permitted in Switzerland; moreover, no other medication exists to combat European foul brood. Hives with symptoms must therefore be destroyed in order to limit the outbreak, and the contaminated material must be sanitised. Since prevention is the best cure, early detection is desirable. Numerous studies have been undertaken and documents have been created at the Swiss Bee Research Centre and elsewhere to draw the attention of beekeepers to these problems and inform them about the causes and the control measures to be implemented.

Merkblatt zur erkennung von Bienenbrutkrankheiten (German (PDF, 357 kB, 18.10.2017) and French (PDF, 226 kB, 02.02.2017))
M. Tschumi (2011)

Publication List

Publication List

Publications Jens Leifeld

Jens Leifeld
Soils as sources and sinks of greenhouse gases.

Jens Leifeld, M. Zimmermann
Thermal analysis of mineral soils before and after oxidation with sodium hypochlorite.
Journal of Thermal Analysis and Calorimetry, 86, (3), 2006, 845-848.

M. Zimmermann, Jens Leifeld, Jürg Fuhrer
Quantifying soil organic carbon fractions by infrared-spectroscopy.
Soil Biology and Biochemistry, 39, 2006, 224-231.

Jens Leifeld, Michael Zimmermann, Jürg Fuhrer
Characterization of soil carbon stocks and site-specific sequestration potentials of agricultural soils - extended summary . Final report to the Swiss Federal Office for the Environment.

Samuel Cornaz, Michel Decrem, René Flisch, Felix Herzog, Patrick Lazzarotto, Jens Leifeld, Paul Liechti, Harald Menzi, Reto Muralt, Jakob Nievergelt, Volker Prasuhn, Walter Richner, Ernst Spiess
Evaluation der Ökomassnahmen - Bereich Stickstoff und Phosphor.
Schriftenreihe der FAL = Les cahiers de la FAL, 57, 2005, 1-136.
other Languages: french

Leifeld J., Kögel-Knabner, I.
Soil organic matter fractions as early indicators for carbon stock changes under different land-use?
Geoderma, 124, (1-2), 2005, 143-155.

Felix Herzog, Samuel Cornaz, Michel Decrem, Jens Leifeld, Harald Menzi, Reto Muralt, Ernst Spiess, Walter Richner
Effet des mesures écologiques sur les émissions d'azote provenant de l'agriculture Suisse.
ART-Schriftenreihe, 57, 2005, 70-78.

Felix Herzog, Samuel Cornaz, Michel Decrem, Jens Leifeld, Harald Menzi, Reto Muralt, Ernst Spiess, Walter Richner
Wirkung der Ökomassnahmen auf die Stickstoffausträge aus der schweizerischen Landwirtschaft.
Schriftenreihe der FAL, 57, 2005, 70-78.

Angelika Kölbl, Jens Leifeld, Ingrid Kögel-Knabner
A comparison of two methods for the isolation of free and occluded particulate organic matter.
Journal of Plant Nutrition and Soil Science, 168, 2005, 660-667.

Jens Leifeld
Emissions de gaz hilarant provenant de l'agriculture suisse.
ART-Schriftenreihe, 57, 2005, 66-69.

Jens Leifeld
Lachgas-Emissionen aus der Schweizer Landwirtschaft.
Schriftenreihe der FAL, 57, 2005, 66-69.

Jens Leifeld, Jürg Fuhrer
Greenhouse gas emissions from Swiss agriculture since 1990: implications for environmental policies to mitigate global warming.
Environmental Science and Policy, 8, 2005, 410-417.

Jens Leifeld, Jürg Fuhrer
The temperature repsonse of CO2 production form bulk soils and soil fractions is related to soil organic matter quality.
Biogeochemistry, 75, 2005, 433-453.

Jens Leifeld, Seraina Bassin, Jürg Fuhrer
Carbon stocks in Swiss agricultural soils predicted by land-use, soil characteristics, and altitude.
Agriculture, Ecosystems & Environment, 105, 2005, 255-266.

Albrecht Neftel, Christof Ammann, Pierluigi Calanca, Chris Flechard, Jürg Fuhrer, Jens Leifeld, Markus Jocher
Treibhausgasquellen und -senken: die Kyoto-Wiese.
Agrarforschung, 12, (8), 2005, 356-361.

Jens Leifeld, Seraina Bassin, Jürg Fuhrer
Soil carbon stocks, sequestration potentials and soil carbon indicators in Swiss agriculture.

Jens Leifeld
Comments on Recalcitrant soil organic materials mineralize more efficiently at higher temperatures. Letter to the editor.
Journal of Plant Nutrition and Soil Science, 166, 2003, 777-779.

Jens Leifeld, I. Kögel-Knabner
Microaggregates in agricultural soils and their size distribution determined by X-ray attenuation.
European Journal of Soil Science, 54, 2003, 167-174.

Jens Leifeld, Seraina Bassin, Jürg Fuhrer
Carbon stocks and carbon sequestration potentials in agricultural soils in Switzerland.
Schriftenreihe der FAL = Les cahiers de la FAL, 44, 2003, 1-123.

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