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Animal production

Hertzberg H., Maurer V., Heckendorn F., Wanner A., Gutzwiller A., Mosimann E.

Control of gastrointestinal nematodes in cattle under dry pasture conditions

A controlled field experiment was performed in the year 2003 with 3 groups of each 20 first season grazing cattle. The efficacy of a biological (Duddingtonia flagrans) and an anthelmintic control strategy (morantel sustained release trilaminate bolus) against gastrointestinal nematodes (GIN) was investigated under unusually dry and warm meteorological conditions. The external conditions resulted in…
Plant production

Suter M., Lüscher A.

Senecio aquaticus – Can the occurrence be influenced by management pratice?

Senecio aquaticus Hill (marsh ragwort) is a poisonous weed in grasslands of various countries (e.g. Great Britain and Central European states); its further spread into farmland must be prevented. This study provides information on habitat preferences of S. aquaticus and reveals how management practice can influence the occurrence of the species. In a survey conducted in…
Food

Vergères G.

Nutrigenomics: science or fiction

Research in the domain of human nutrition is marked by the emergence of nutrigenomics, a science that bases itself on three decades of developments in life sciences (medicine, biochemistry, molecular biology), microtechnics and informatics. The sequencing of the human genome has opened the door to a holistic approach in which genetic material, proteins and metabolites…
Food

Fröhlich-Wyder M.-T., Bütikofer U., Guggisberg D., Wechsler D.

Raclette cheese: less calcium for better melting properties

ALP conducted studies with experimental raclette cheese made from pasteurised milk to obtain a better understanding of the influence of calcium on the melting properties of raclette cheese. The trial presented here achieved its aim of using various factors to lower the calcium content of the cheese and increase the proportion of dissolved calcium. The…
Food

Eigenmann C., Kellerhals M.

Which apples do the consumers require?

The survey at hand on new apple varieties and the survey on consumer habits were conducted in 2005 at the BEA 05 in Berne and in 2006 at the Migros in Wädenswil. The investigation was part of the EU project HIDRAS, which is concerned with the development of high-quality disease resistant apple varieties for a…
Agricultural economics

Mann S.

The situation of retired farmers

Data of the Swiss Health Survey is used to record the financial and social situation of retired farmers in a quantitative and econometric way. It is shown that the income gap between farmers and non-farmers decreases after retirement. Except that old farmers are more often exposed to children than old non-farmers, no significant social differences…
Plant production

Mascher F., Reichmann P., Schori A.

Influence of powdery mildew on triticale

In 2005, a first major epidemic of powdery mildew on triticale occurred in Switzerland. The present study relies on perennial observation from 3 sites of the Swiss variety trial network for the inscription in the national catalogue. Eight recent varieties have been included in the observation scheme in order to test the severity of the…
Environment

Hartmann M., Kölliker R., Enkerli J., Dubois D., Widmer F., Fliessbach A.

Farming systems influence soil bacteria

Soil microorganisms are known to influence nutrient cycling and transformation processes in soil. They are involved in maintaining soil quality and therefore in production of agricultural products of high quality. These communities may respond in a highly sensitive way to different environmental influences. High biodiversity may represent the ability of a soil to maintain functioning…
Environment

Stünzi H.

The soil P extraction with ammonium acetate EDTA (AAE10)

A prerequisite for the application of phosphorous values resulting from soil analysis methods is the comprehension of the chemical processes in the soil extraction. These processes were examined for the ammonium acetate EDTA extraction (AAE10-P) and compared with the extractions with CO2-saturated water (CO2-P) and pure water (H2O10-P). The average P-concentrations in the AAE10 extract…
Environment

Schaller B., Nemecek Th., Streit B., Zihlmann U., Chervet A., Sturny W. G.

Life cycle assessment of a system under no-tillage and ploughing

No-tillage and conventional plough tillage have been compared on a soil of medium heavy texture in a crop rotation without fallow period at the Inforama Ruetti in Zollikofen (Berne) since 1994. For the crop rotation period from 1999 to 2005 the environmental impact of both systems was calculated via life cycle assessment. With regard to…
Environment

Peter S.

Swiss nitrogen-cycle – expected deployment by 2013

The «Nitrogen-Project» has been mandated by the Swiss Federal Office of Agriculture and was elaborated at the Institute for Agricultural Economics at ETH Zurich. In the framework of this research project a recursive-dynamic agricultural allocation model has been used to anticipate the development of nitrogen emissions from agriculture on the sectoral level. This article provides…
Animal production

Chassot A., Dufey P.-A.

Finishing of steers following a summering period on mountain pastures: effect of the finishing duration on fatening performance

Subsequent to a summering period of 48 crossbred steers (Limousin x Swiss Fleckvieh) on low input mountain pastures, the effect of a finishing period on fattening performance was investigated. Steers were slaughtered either on the day of returning from the mountain pastures (no finishing) or after 4, 8 and 12 weeks of indoor finishing (loose…
Plant production

Gunst L., Krebs H., Dubois D., Mäder P.

Fungal diseases and yield in organic and conventional wheat production

The different farming systems had no influence on the incidence of disease, except for fungal pathogens on the leaves, which were reduced by fungicide treatment in the conventional systems. The influence of the annual weather conditions was significant. The amount of fertiliser applied and the previous crop in some cases significantly affected the incidence of…
Plant production

Huguenin-Elie O., Stutz C., Lüscher A., Gago R.

Grassland improvement by overseeding

To assess the influence of the seeding method on the success of overseeding, we compared four kinds of seeders – seed broadcaster with roller, seed broadcaster with harrow, drill seeder and seeder with rotary band cultivator – and two seasons (mid-Mai and mid-August) in grasslands of different initial sward composition. At two locations we tested…
Plant production

Lobsiger M., Hofer Ch., Mosimann E., Jeangros B., Lüscher A.

Grassland utilisation in autumn and yield in spring

The consequences of a late closing date in autumn on pasture in spring are mostly unknown. An experiment comparing the effect of three different closing dates in autumn (early October, late October, late November) was therefore carried out over a three-year period on two sites in the Swiss lowlands. The aim was to determine, how…
Plant production

Wellinger R., Buser H.P., Krauss J., Theiler R.

Carrots: cultivation, harvest and storage

During three years (2003 – 2005) carrot varieties Bolero and Maestro (Villmorin) were cultivated to study the influence of cultivation systems and harvest time on yield, carrot size and the incidence of carrot-rots after six months storage at 1°C and 92% RH. In all three years similar tendencies were observed with respect to yield and…

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