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)

Publikationsliste

Publikationsliste

Publikationen Jens Leifeld

Fernández, J., Plante, A., Leifeld J., Rasmussen, C.
Methodological considerations for using thermal analysis in the characterization of soil organic matter.
Journal of Thermal Analysis and Calorimetry, 104, (1), 2011, 389-398.

Leifeld J., Gubler, L., Grünig A.
Organic matter losses from temperate ombrotrophic peatlands: an evaluation of the ash residue method.
Plant and Soil, 341, (1-2), 2011, 349-361.

Conen, F., Yukatin, M. V., Puchnin, A. N., Leifeld J., Alewell, C.
δ15N natural abundance in permafrost soil indicates impact of fire on nitrogen cycle.
Rapid Communications in Mass Spectrometry, 25, 2011, 661-664.

Sanaullah, M., Chabbi, A., Leifeld J., Bardoux, G., Billou, D., Rumpel, C.
Decomposition and stabilization of root litter in top- and subsoil horizons: what is the difference?
Plant and Soil, 338, (1), 2010, 127-141.

Leifeld J.
Kohlenstoffsequestrierung in landwirtschaftlichen Böden – eine kritische Betrachtung: In: Emissionen landwirtschaftlich genutzter Böden.
KTBL-Schrift, 483, 2010, 182-191.

Leifeld J., Fuhrer J.
Organic farming and soil carbon sequestration: What do we really know about the benefits?
Ambio, 39, (8), 2010, 585-599.

Alexis, M. A., Rumpel, C., Knicker, H., Leifeld J., Rasse, D., Péchot, N., Bardoux, G., Mariotti, A.
Thermal alteration of organic matter during a shrubland fire: A field study.
Organic Geochemistry, 41, (7), 2010, 690-697.

Plante, A. F., Fernández, J. M. , Leifeld J.
Application of thermal analysis techniques in soil science.
Geoderma, 153, 2009, 1-10.

Kammer, A., Hagedorn, F., Shevchenko, I., Leifeld J., Guggenberger, G., Goryacheva, T., Rigling, A., Moiseev, P.
Treeline shifts in the Ural mountains affect soil organic matter dynamics.
Global Change Biology, 15, 2009, 1570-1583.

Leifeld J., Reiser R., Oberholzer H.-R.
Consequences of conventional versus organic farming on soil carbon: results from a 27-year field experiment.
Agronomy Journal, 101, (5), 2009, 1204-1218.

Ammann C., Neftel A., Spirig, C., Leifeld J., Fuhrer J.
Stickstoff-Bilanz von Mähwiesen mit und ohne Düngung.
Agrarforschung, 16, (9), 2009, 348-353.

Anken T., Hermle, S., Leifeld J., Weisskopf P.
The effects of tillage systems on soil organic carbon content under moist, cold-temperate conditions.
In: 18th Triennial Conference International Soil Tillage Research Organisation (ISTRO). June 15-19, 2009, Izmir-Turkey. 2009.

Ammann C., Spirig C., Leifeld J., Neftel A.
Assessment of the nitrogen and carbon budget of two managed grassland fields.
Agriculture, Ecosystems & Environment, 133, 2009, 150-162.

Jens Leifeld, Michael Zimmermann, Jürg Fuhrer, Franz Conen
Storage and turnover of carbon in grassland soils along an elevation gradient in the Swiss Alps.
Global Change Biology, 15, 2009, 668-679.

Jens Leifeld
Einfluss der Bewirtschaftung auf den Bodenkohlenstoff in der Landwirtschaft.
Rundgespräche der Kommission für Ökologie, 35 Humus in B, 2009, 85-91.

Jens Leifeld, Jürg Fuhrer
Long-term management effects on soil organic matter in two cold, high-elevation grasslands: clues from fractionation and radiocarbon dating.
European Journal of Soil Science, 60, 2009, 230-239.

Janine Bolliger, Frank Hagedorn, Jens Leifeld, Jürgen Böhl, Stephan Zimmermann, Reto Solvia, Felix Kienast
Effects of land-use change on carbon stocks in Switzerland.
Ecosystems, 11, 2008, 895-907.

Franz Conen, Kristiina Karhu, Jens Leifeld, Barbara Seth, Pekka Vanhala, Jari Liski, Christine Alewell
Temperature sensitivity of young and old soil carbon. Same soil, slight differences in 13C natural abundance method, inconsistent results.
Soil Biology and Biochemistry, 40, 2008, 2703-2705.

Franz Conen, M. Zimmermann, Jens Leifeld, C. Alewell
Relative stability of soil carbon revealed by shifts in d15N and C:N ratio.
Biogeosciences, 5, 2008, 123-128.

Sandra Hermle, Thomas Anken, Jens Leifeld, Peter Weisskopf
The effect of the tillage system on soil organic carbon content under moist, cold-temperate conditions.
Soil & Tillage Research, 98, (1), 2008, 94-105.

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