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.
2020
Authors
Hans Martin Hanslin Trygve S. Aamlid Ellen Johanne Svalheim Johannes Kollmann Geir Kjølberg Knudsen Harald BratliAbstract
No abstract has been registered
Authors
Hans Martin Hanslin Trygve S. Aamlid J. Kollmann T. Lennartson Ellen Johanne Svalheim Eveliina KallioniemiAbstract
No abstract has been registered
Authors
Hans Martin Hanslin Trygve S. Aamlid Ellen Johanne Svalheim Geir Kjølberg Knudsen Johannes Kollmann Harald Bratli Jörgen WissmannAbstract
No abstract has been registered
Authors
Karin Juul Hesselsøe K. Sintorn Koert Donkers N. Dokkuma Yajun Chen Trond Olav Pettersen Wolfgang Prämassing M. Woods D. Cleaver Anne Falk Øgaard Tore Krogstad Trygve S. AamlidAbstract
No abstract has been registered
Abstract
This is a report on the potential of NanoPro™ to reduce the rate of two commonly used fungicides for control of Microdochium patch (Microdochium nivale), the economically most important turfgrass disease in Scandinavia. The experiment was conducted from 14 Sept. 2018 to 1 May 2019 on an annual bluegrass golf green at the NIBIO Turfgrass Research Center Landvik. Use of NanoPro™ at a rate of 292 ml/ha in tank mixture with the systemic fungicide Delaro® SC 325 or/and the contact fungicide Medallion® TL produced the same level of disease control with a 30-60% reduction in fungicide dosage as with full fungicide dosage without additive. NanoPro™ was more effective with Medallion® TL than with Delaro® SC 325. We conclude that NanoPro™ may have a big potential in Scandinavia and other countries where authorities require reduced fungicide use. The experiment should be repeated one more year before giving final recommendations.
Authors
Trygve S. Aamlid Pia Heltoft Thomsen Tatsiana Espevig Wendy Marie Waalen Anne Mette Dahl Jensen Gudni ThorvaldssonAbstract
No abstract has been registered
Authors
Tatsiana Espevig Karin Normann Nick Bosholdt Marina Usoltseva Stefan Nilsson Anders Olofsson Jo Anne Crouch Kate Entwistle Kristine Sundsdal Trond Olav Pettersen Trygve S. Aamlid Torfinn TorpAbstract
No abstract has been registered
Authors
Camilla Lorange Lindberg Hans Martin Hanslin Marian Schubert Thomas Marcussen Ben Trevaskis Jill Christine Preston Siri FjellheimAbstract
Semelparous annual plants flower a single time during their 1‐yr life cycle, investing much of their energy into rapid reproduction. By contrast, iteroparous perennial plants flower multiple times over several years, and partition their resources between reproduction and persistence. To which extent evolutionary transitions between life‐cycle strategies are internally constrained at the developmental, genetic and phylogenetic level is unknown. Here we study the evolution of life‐cycle strategies in the grass subfamily Pooideae and test if transitions between them are facilitated by evolutionary precursors. We integrate ecological, life‐cycle strategy and growth data in a phylogenetic framework. We investigate if growth traits are candidates for a precursor. Species in certain Pooideae clades are predisposed to evolve annuality from perenniality, potentially due to the shared inheritance of specific evolutionary precursors. Seasonal dry climates, which have been linked to annuality, were only able to select for transitions to annuality when the precursor was present. Allocation of more resources to above‐ground rather than below‐ground growth is a candidate for the precursor. Our findings support the hypothesis that only certain lineages can respond quickly to changing external conditions by switching their life‐cycle strategy, likely due to the presence of evolutionary precursors.
Authors
Joel Lönnqvist Hans Martin Hanslin Birgitte Gisvold Johannessen Tone Merete Muthanna Maria Viklander Godecke BleckenAbstract
Standard succulent vegetation mixes developed mostly in temperate climates are being increasingly used on green roofs in different climate zones with uncertain outcome regarding vegetation survival and cover. We investigated vegetation on green roofs at nine temperate, cold, and/or wet locations in Norway and Sweden covering wide ranges of latitude, mean annual temperature, annual precipitation, frequencies of freeze-thaw cycles, and longest annual dry period. The vegetation on the roofs were surveyed in two consecutive years, and weather data were compiled from meteorological databases. At all sites we detected a significant decline in species compared to originally intended (planted/sown) species. Both the survival rate and cover of the intended vegetation were positively related to the mean annual temperature. Contrary to a hypothesis, we found that intended vegetation cover was negatively rather than positively related to mean annual precipitation. Conversely, the unintended (spontaneous) vegetation was favoured by high mean annual precipitation and low mean annual temperature, possibly by enabling it to colonize bare patches and outcompete the intended vegetation. When there is high mortality and variation in cover of the intended vegetation, predicting the strength of ecosystem services the vegetation provides on green roofs is difficult. The results highlight the needs for further investigation on species traits and the local factors driving extinction and colonizations in order to improve survivability and ensure a dense vegetation throughout the successional stages of a green roof.
Authors
Karin Juul HesselsøeAbstract
No abstract has been registered