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| Jossi, Werner; Bruderer, Ruth; Valenta, Anna; Schweizer, Christian; Scherrer, Caroline; Keller, Siegfried; Dubois, David. |
| Laufkäfer, Kurzflügler und Spinnen gehören zu den nützlichen Bewohnern der Feldfauna. Auf dem Betrieb Burgrain wurde in drei Anbausystemen integrierte Produktion (IP) intensiv, IP extensiv und biologisch von 1997 bis 2002 das Vorkommen dieser räuberischen Arthropoden mit Bodenfallen untersucht. Die Laufkäfer traten in den drei beprobten Kulturen Sommergerste, Winterweizen und Körnermais etwa gleich häufig auf. Bei biologischer Bewirtschaftung wurden in Sommergerste und Winterweizen gesichert höhere Aktivitätsdichten als bei den zwei IP-Anbausystemen festgestellt. Im Durchschnitt der drei Ackerkulturen wurden bei Bio 22 % und bei IPextensiv 8 % mehr Laufkäfer gefangen als bei IPintensiv. Es scheint, dass vor allem der höhere Unkrautbesatz bei Bio und... |
| Tipo: Journal paper |
Palavras-chave: Biodiversity and ecosystem services. |
| Ano: 2004 |
URL: http://orgprints.org/3819/1/Einfluss_Bewirtsch_auf_Nuetzlinge.pdf |
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| Wittwer, Raphaël; Jossi, Werner; van der Heijden, Marcel. |
| Several studies indicate that cover crops can be used to enhance agricultural sustainability as they provide numerous ecological services in agro-ecosystems. They protect soil against erosion and nutrient losses and compete weeds. Moreover, legume species fix nitrogen (N) from the atmosphere and contribute to next crop nutrition. Hence, cover crops complement the ecological aims of organic agriculture. We investigated the impact of cover crops in different cropping systems (organic and conventional) and soil tillage intensities (plough, reduced and no-tillage) in various field experiments. Moreover, results from an experimental network, which has investigated the behavior of more than 11 cover crops, is included. Results show that the effects of cover... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality; Crop combinations and interactions. |
| Ano: 2017 |
URL: http://orgprints.org/31868/1/Die%20vielen%20Facetten%20von%20Zwischenfr%C3%BCchten.pdf |
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| Humphrys, Clay; Jossi, Werner. |
| Pollen beetle (Meligethes spp.) is a major yield-limiting factor in organic oilseed production. Currently there are no effective methods available to control this beetle in organic agriculture. From 2006 to 2008 work was carried out at Agroscope ARTReckenholz to find suitable organically compatible plant protecting agents which are effective against the beetle. A partial reduction in beetle infestation was observed when liquid manure, lavender oil and rapeseed oil was applied. Dusting agents such as ash and substances containing silicate (stone meal) were very efficient, almost completely removing the beetle after application. However, beetle infestation increased again after one or two days following application. Dusting substances in combination... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2009 |
URL: http://orgprints.org/14463/1/Humphrys_14463.pdf |
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| Van Der Heijden, Marcel; Wittwer, Raphael; Jossi, Werner; Prechsl, Ulrich; Nemecek, Thomas; Schläppi, Klaus; Hagen, Emily O.; Keller, Thomas; Walder, Florian; Büchi, Lucie; Charles, Raphael; Colombi, Tino; Hess, Julia; Hirte, Juliane; Mayer, Jochen; Loiaza, Viviana; Pujol-Pereira, Engil; Six, Jo; Dennert, Francesca; Maurhofer, Monika; Seitz, Steffen. |
| One of the primary challenges of our time is develop sustainable farming systems that can feed the world with minimal environmental impact. Some studies argue that organic farming systems are best because these have minimal impact on the environment and are positive for biodiversity. Others argue that no-tillage systems are better because such systems save energy and preserve soil structure and quality. A third group argues that conventional farming systems are best because yield per hectare is highest. However, so far, systematic comparisons of major arable production systems are rare and often it is difficult to compare the advantages and disadvantages of farming systems in a systematic way due to differences in soil/site characteristics and management.... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general Food security; Food quality and human health Soil tillage. |
| Ano: 2018 |
URL: http://orgprints.org/34561/1/vanderheijden-etal-2018ESA2018_FinalAbstractBook_p45.pdf |
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| Stadler, Marina; Zihlmann, Urs; Scherrer, Caroline; Jossi, Werner; Streit, Bernhard. |
| In a small-plot field trial 33 green manure plants (GM) were examined for their ability to suppress weeds in a no-tillage system. A roll-chopper was used to suppress the GMs before seeding winter wheat. The success of this organic method to control GMs was compared to the standard method using a non selective herbicide. Species of the group brassicaceae, monocotyles and plant mixtures covered the soil faster, produced more biomass and suppressed weeds more efficiently than species of the group legumes and dicotyles. In spring, weed infestation in all roll-chopper treatments always exceeded economic threshold values whereas in the herbicide treatment weed infestations remained below these values. Additionally, wheat yield and density was reduced in... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop husbandry. |
| Ano: 2009 |
URL: http://orgprints.org/14397/1/Stadler_14397.pdf |
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| Jossi, Werner; Zihlmann, Urs; Dubois, David; Pfiffner, Lukas. |
| Im DOK-Versuch werden seit 1978 zwei biologische und zwei konventionelle Anbauverfahren sowie ein ungedüngtes Kontrollverfahren miteinander verglichen. Regenwurm-Erhebungen von 2001 bis 2005 haben gezeigt, dass sowohl bei der Biomasse wie bei der Anzahl Regenwürmer keine gesicherten Unterschiede zwischen den mit Mist und Gülle gedüngten Verfahren D2, O2 und K2 festzustellen sind. Dabei waren die Werte generell auf einem für Ackerböden hohen Niveau. Gegenüber früheren Erhebungen konnten mit dem Verzicht regenwurmtoxischer Pflanzenschutzmittel seit 1992 die Regenwürmer auch in den konventionellen Verfahren geschont und regeneriert werden. Das rein mineralisch gedüngte Verfahren M2 wies gegenüber den Hauptverfahren eine 13 % geringere Regenwurm-Biomasse auf,... |
| Tipo: Journal paper |
Palavras-chave: Biodiversity and ecosystem services; Crop husbandry. |
| Ano: 2007 |
URL: http://orgprints.org/13144/1/jossi%2Detal%2D2007%2Ddok_AF.pdf |
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| Dorn, Brigitte; Jossi, Werner; van der Heijden, Marcel. |
| In large-plot field trials leguminous cover crops were examined under conservation tillage systems in organic farming conditions for their ability to suppress weeds. Cover crops were directly drilled after wheat harvest into the field. Suitability of cover crop was estimated by assessing their growth, soil coverage, biomass, biomass of weeds, mulch layer and yield of the main crop, which was either maize or sunflower. Fast growing cover crops, which had a high biomass, reduced weed growth most. Any cover crops grown reduced weed biomass significantly compared to the control without cover crop. Effects on the main crops will be determined after harvest in autumn 2010. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management. |
| Ano: 2011 |
URL: http://orgprints.org/17405/3/Dorn_17405.pdf |
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