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| Registros recuperados: 115 | |
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| Daniel, Claudia; Keller, Siegfried; Wyss, Eric. |
| Field efficacy of entomopathogenic fungi to control Rhagoletis cerasi. Two myco-insecticides, Naturalis-L (Beauveria bassiana) and PreFeRal®WG (Paecilomyces fumosoroseus), were applied against adult R. cerasi Loew (Diptera: Tephritidae) in two orchards in north-western Switzerland in summer 2006. Both products were able to cause mycosis on adult flies under field conditions. However, only Naturalis-L significantly reduced the number of damaged fruits (efficacy: 69-74%), whereas damaged fruits were not significantly reduced with PreFeRal (efficacy: 27%). For B. bassiana living fungal propagules were still detectable seven days after application while the fungal propagules of P. fumosoroseus remained only three days. A control of R. cerasi with... |
| Tipo: Journal paper |
Palavras-chave: Crop husbandry; Fruit and berries; Post harvest management and techniques. |
| Ano: 2008 |
URL: http://orgprints.org/20266/1/F_2008_02KifliFeldDgaae.pdf |
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| Wyss, Eric; Tamm, Lucius; Siebenwirth, Joachim; Baumgartner, Stephan. |
| A laboratory model system with the rosy apple aphid (Dysaphis plantaginea Pass.) on apple seedlings was developed to study the effects of homeopathic preparations on this apple pest. The assessment included the substance Lycopodium clavatum and a nosode of the rosy apple aphid. Each preparation was applied on the substrate surface as aqueous solution of granules (6c, 15c, or 30c). Controls were aqueous solutions of placebo granules or pure water. In eight independent, randomized, and blinded experiments under standardized conditions in growth chambers, the development of aphids on treated and untreated apple seedlings was observed over 17 days, each. Six experiments were determined to assess the effects of a strict therapeutic treatment; two experiments... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2010 |
URL: http://orgprints.org/16969/1/wyss%2Detal%2D2010_HomeopathyAphid_TSW.pdf |
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| Daniel, Claudia; Linder, Christian; Wyss, Eric. |
| The pear leaf blister mite can cause severe damages to pear trees. By their hidden way of living inside the leaf blisters, the mites are protected from plant protection agents. Until now, oil treatments in early spring, when the mites leave their hibernation sites and invade the young leaves, are the only possibility to control these mites. Because of the low temperatures during this period (February/ March) the efficacy of pesticides is often not reliable. The aim of this study was to assess the effects of sulphur applied after harvest at the time, when mites are leaving the blisters and migrate to the hibernation sites. The treatments were applied shortly after harvest to benefit from the mild temperatures in September. Visual controls in... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2006 |
URL: http://orgprints.org/13770/1/ecofruit_12th_9.pdf |
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| Daniel, Claudia; Wyss, Eric. |
| The European pear sucker Cacopsylla pyri (L.) (Homoptera: Psyllidae) – one of the main pest insects in pear production – is commonly controlled by spraying broad-spectrum insecticides, which may have serious side-effects on beneficial arthropods. Recently, a new approach to fruit pest management has arisen in the form of processed-kaolin particle film technology (product name Surround® WP). The white kaolin particle film repels insects without killing them. Therefore, side effects on beneficial arthropods are expected to be low. This new approach triggered the present study to control C. pyri. In spring 2003 a small-plot field trial was conducted to assess the impact of pre-flowering kaolin treatments on the first generation of C. pyri. Multiple... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2006 |
URL: http://orgprints.org/13114/1/daniel%2Dwyss%2D2006%2DPsyllaDgaaE.pdf |
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| Schied, Johannes; Leimgruber, Andrea; Willareth, Martin; Nagel, Peter; Pfiffner, Lukas; Luka, Henryk; Wyss, Eric. |
| Within this project we assess whether wildflower strips and companion plants increase the control of cabbage pests Plutella xylostella L. (Lepidoptera: Plutellidae), Mamestra brassicae L. (Lepidoptera: Noctuidae) and Pieris rapae L. (Lepidoptera: Pieridae) by (1) naturally occurring parasitoids and predators and (2) mass‐releasedn Trichogramma brassciae (Bezdenko) (Hymenoptera: Trichogrammatidae) parasitoids. Two organic cabbage fields were used for this study: adjacent to each field a wildflower strip was sown and companion plants (Centaurea cyanus L. (Asteraceae)) intermixed within the crop. Within each field ~15,000 M. brassicae eggs were placed out to determine the parasitism rates by mass‐released T. brassicae and to assess the levels of egg... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Vegetables; Biodiversity and ecosystem services. |
| Ano: 2009 |
URL: http://orgprints.org/18168/1/schied-etal-2009-biological-control.pdf |
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| Wyss, Eric; Daniel, Claudia. |
| 1.Wirkung U-förmig aufgestellter Insektenzäune gegen die Möhrenfliege Psila rosae im biologischen Möhrenanbau 2.Wirkung verschiedenartiger Abschirmungen mit Insektenzäunen gegen die Kohldrehherzgallmücke Contarinia nasturtii im biologischen Broccolianbau 3.Wirkung eines Insektenzauns gegen den Einflug der Zwergzikaden Eupterix atropunctata und Emelyanoviana mollicula in biologische Salbei- und Oreganokulturen 4.Nebenwirkung vertikaler Insektenzäune auf diverse Nichtziel-Insektengruppen 5.Wirkung eines Insektenzauns gegen den Einflug der Lauchminierfliege Napomyza gymnostoma im biologischen Lauchanbau 6.Wirkung eines Insektenzauns gegen den Einflug der Kleinen Kohlfliege Delia brassicae im biologischen Rettichanbau Fragestellung: Wirksamkeit... |
| Tipo: Report |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2004 |
URL: http://orgprints.org/5103/1/Daniel%2D2004%2DMoehrenfliege.pdf |
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| Registros recuperados: 115 | |
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