Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2019
Authors
Roman Gebauer Daniel Volařík Josef Urban Isabella Børja Nina Elisabeth Nagy Toril Drabløs Eldhuset Paal KrokeneAbstract
No abstract has been registered
Authors
Jonathan RizziAbstract
No abstract has been registered
Abstract
No abstract has been registered
Authors
Francisco Javier Ancin Murguzur Gregory Taff Corine Davids Hans Tømmervik Jørgen A.B. Mølmann Marit JørgensenAbstract
No abstract has been registered
Authors
Dilli Prasad Rijal Kelsey Lorberau Jutta Kapfer Leif-Einar Støvern Inger Greve Alsos Kari Anne BråthenAbstract
No abstract has been registered
Authors
Sofie Hellsten Tommy Dalgaard Katri Rankinen Kjetil Tørseth Lars Bakken Marianne Bechmann Airi Kulmala Filip Moldan Stina Olofsson Kristoffer Piil Kajsa Pira Eila TurtolaAbstract
No abstract has been registered
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No abstract has been registered
Authors
Heli Fitzgerald Anna Palmé Åsmund Asdal Dag Terje Filip Endresen Elina Kiviharju Birgitte Lund Morten Rasmussen Hjörtur Thorbjörnsson Jens WeibullAbstract
No abstract has been registered
Authors
Isabella BørjaAbstract
No abstract has been registered
Abstract
Although supporting high productivity, modern agriculture caused a long-term impact on natural trophic interactions, releasing pests from pressure linked with their natural enemies. Studies have demonstrated that volatiles released under herbivory can recruit natural enemies of pests from a distance. Here, we used a novel biodegradable formulation loaded with induced and food-signalling volatiles with the aim to attract the green lacewing, Chrysoperla carnea, and increase biological control of two cereal aphids Sitobion avenae and Rhopalosiphum padi. The new product consisted of a biodegradable matrix loaded with a 3-component blend of methyl salicylate, acetic acid and phenylacetaldehyde in a 1:1:1 ratio. Field experiments were carried out in a barley field in Norway. Single plants were provided with a 1 ml dollop of the new formulation or with a standard polyethylene emballage dispenser loaded with the same amount of compounds. The number of lacewing eggs and larvae as well as the attraction of additional natural enemies was recorded both on the treated and surrounding plants by visual inspection. At the same time, an assessment of aphid infestation was carried out. A higher local density of lacewing adults, eggs and larvae over an 8-week period was observed for both the standard and the biodegradable formulation in comparison with untreated plants. Chemical analysis of the volatiles emitted from the slow-release matrix showed an active emission of the blend over at least a 4-week period. Significant biological control of aphid was measured in the vegetation surrounding the odour source. Both aphid populations were significantly reduced, with no difference between the new and the standard treatment. While coccinellids and hoverflies were not affected by the treatment, a lower number of mummified aphids were measured in some of the treated plants in comparison with untreated ones. Results show the potential for semiochemical-based targeted attraction of lacewings to enhance biological control of aphids in a prevalent monoculture field setting. Additional studies are required to support the development of practical integrated pest management guidelines, including optimization of application density, threshold value for pest and natural enemies and practical recommendation for the establishment of non-crop vegetation within and around the crop.