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Hebeisen T.,ART Agroscope Reckenholz Tanikon | Ballmer T.,ART Agroscope Reckenholz Tanikon | Wuthrich R.,ART Agroscope Reckenholz Tanikon | Dupuis B.,Forschungsanstalt Agroscope Changins Wadenswil
Agrarforschung Schweiz | Year: 2012

In 2008 and 2009, in field trials at the Changins-Nyon (Vaud canton) and Zurich-Reckenholz sites, respectively, the two research stations of Agro-scope Changins-Wädenswil ACW and Agroscope Reckenholz-Tänikon ART investigated the variety-specific nitrogen (N) requirement of the potato varieties Gourmandine, Jelly, Laura and Lady Jo (the latter at Changins only). The N levels varied from 0 to 200 kg N per hectare. All varieties reacted to the increasing N supply with a higher gross- and marketable yield. From an N-application level of 120 kg/ha onwards, however, no significant surplus yields were demonstrated. The Gourmandine variety produced significantly higher gross- and marketable yields than Jelly and Laura. The higher the N supply, the lower the starch content of the tubers. Tubers from plants fertilised with N tended to exhibit a slightly higher brushing susceptibility than those from the non-fertilised treatment. Crisps made from the tubers of non-fertilised plants were slightly lighter in crisp colour than those of the tubers of the fertilised plants. The Gourmandine, Jelly and Laura varieties produce high marketable yields at average N-appli-cation levels of 100 to 120 kg N/ha. These trials confirm the significant influence of the weather over the year as well as the site conditions on potato yields. Source

Schweizer S.,Forschungsanstalt Agroscope Changins Wadenswil | Kauf P.,Institute For Angewandte Simulation Ias | Hohn H.,Forschungsanstalt Agroscope Changins Wadenswil | Naef A.,Forschungsanstalt Agroscope Changins Wadenswil
Agrarforschung Schweiz | Year: 2013

Drug-containing droplets from the application of plant protection products (PPP) can be transported and deposited outside of the target area, which is called direct spray drift and affects adjacent waterbodies and other non-target areas. The environmental risk expected through spray drift of PPP is estimated as part of the authorization-process. If necessary, spray free buffer zones of 6 to 100 m must be applied towards surface waters. If drift is reduced by appropriate measures, the width of these buffer zones could be diminished. Four drift reduction measures have been tested under practical conditions of Swiss apple production. Windbreak hedges or injector nozzles reduced drift by approx. 75 % each, a hail net on the top of the orchard by approx. 65 %. A coarse-mesh net as a windbreak at the edge of the field showed an effect of about 20 % drift reduction only. Source

Brabant C.,Forschungsanstalt Agroscope Changins Wadenswil | Schwaerzel R.,Forschungsanstalt Agroscope Changins Wadenswil | Augsburger B.,Moulin du Rhone | Jaquet H.,Moulin de Sion SA | And 2 more authors.
Agrarforschung Schweiz | Year: 2013

This paper aims to better understand the milling and baking quality of rye varieties in Switzerland, in order to better meet the needs of users for rye. A quality scheme is proposed to determine the quality of rye grown in Switzerland. The analyzes measuring the flour yield (PHL, ash content) and the starch quality (falling number, Amylogram viscosity) are included in this scheme and a total of 40 points can be obtained. In 2007 and 2008, the varieties GISETTO and VISELLO got the highest points number with each 27 points in 2007 and 34 points in 2008. In contrast, the variety CADI got the lowest points number. Source

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