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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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| Luka, Henryk; Leimgruber, Andrea; Willareth, Martin; Nagel, Peter; Pfiffner, Lukas; Wyss, Eric; Schlatter, Christian; Schied, Johannes; Traugott, Michael. |
| Beneficials can prevent or reduce outbreaks of pest species. To strengthen the populations of beneficials, their food sources must be improved in cultivated areas. The effects of habitat management for augmenting beneficial population on parasitism and predation rates of three lepidopteran pest species were investigated on two organic fields in Alten (Switzerland). The aim was to improve pest regulation through wild flower strips along fields and by planting Centaurea cyanus as companion plant within the crop. Strips of Centaurea cyanus and Fagopyrum esculentum increased parasitsm on the lepidopteran pests. C. cyanus planted as companion plant furthermore increased predation on the eggs and parasitism of the larvae of Mamestra brassicae. Several... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2009 |
URL: http://orgprints.org/14127/1/Luka_14127.pdf |
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