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
Anna Bucharova Nina Farwig Johannes KollmannAbstract
No abstract has been registered
Authors
Cornelya KlutschAbstract
No abstract has been registered
Authors
L.T. Ellis Olga M. Afonina I.V. Czernyadjeva L.A. Konoreva A.D. Potemkin V.M. Kotkova M. Alataş Hans Blom M. Boiko R.A. Cabral S. Jimenez D. Dagnino C. Turcato L. Minuto P. Erzberger T. Ezer Olga Galanina N. Hodgetts M.S. Ignatov Elena A. Ignatova S.G. Kazanovsky T. Kiebacher H. Köckinger E.O. Korolkova J. Larraín A.I. Maksimov D. Maity A. Martins M. Sim-Sim F. Monteiro L. Catarino R. Medina M. Nobis Arkadiusz Nowak Ryszard Ochyra I. Parnikoza V. Ivanets V. Plášek M. Philippe P. Saha Md. N. Aziz A.V. Shkurko S. Ştefănuţ G.M. Suárez A. Uygur K. Erkul M. Wierzgoń A. GraulichAbstract
No abstract has been registered
Authors
L. T. Ellis M. Kh. Alikhadzhiev R. S. Erzhapova Hans Blom H. Bednarek-Ochyra M. Burghart M. J. Cano I.V. Czernyadjeva E. Yu. Kuzmina A. D. Potemkin G. Ya. Doroshina D. Dagnino C. Turcato L. Minuto P. Drapela M. V. Dulin E. Fuertes A. Graulich Kristian Hassel Lars Hedenäs Tom Hellik Hofton Torbjørn Høitomt I. Jukonienė M. Kırmacı N. E. Koroleva Ł. Krajewski M. Kropik H. Kürschner E. V. Kushnevskaya J. Larraín M. Lebouvier A. I. Maksimov O. Yu. Pisarenko V. Plášek Z. Skoupá S. Yu. Popov V. E. Fedosov M. Puglisi A Stebel S. Ştefănut G. Vončina M. Wierzgoń S.-L. GuoAbstract
No abstract has been registered
Abstract
Sweet potato (Ipomoea batatas L. Lam) has become one of the staple crops in Africa in the last 20 years. In Ethiopia, sweet potato is the second most widely grown root crop and is the first regarding the production per hectare. Thus, there is a great demand of planting material throughout the country. Currently, planting material is usually obtained from own previous season harvest, local markets or from the neighboring fields since no certified clean planting material production scheme has been established in Ethiopia yet. Unfortunately, this practice has contributed to the spread of viral diseases throughout the country. Elimination of viruses from infected plants is a tedious job, which requires efficient methods to eliminate the virus and also to verify that the plants are indeed virus-free. In the case of sweet potato, it was observed that heat treatment, combined with meristem tip culture is an efficient method for virus elimination. Previous findings indicate that reverse transcription (RT) PCR is more efficient than ELISA to verify the efficiency of virus elimination. In this study, the use of next generation sequencing (NGS) was explored as a verification method and compared with RT-PCR. The results show that NGS seems to be more efficient than RT-PCR, although also prone to inconclusive results.
Authors
Sophia Etzold Marco Ferretti Gert Jan Reinds Svein Solberg Arthur Gessler Peter Waldner Marcus Schaub David Simpson Sue Benham Karin Hansen Morten Ingerslev Mathieu Jonard Per Erik Karlsson Antti-Jussi Lindroos Aldo Marchetto Miklos Manninger Henning Meesenburg Päivi Merilä Pekka Nöjd Pasi Rautio Tanja G.M. Sanders Walter Seidling Mitja Skudnik Anne Thimonier Arne Verstraeten Lars Vesterdal Monika Vejpustkova Wim de VriesAbstract
Changing environmental conditions may substantially interact with site quality and forest stand characteristics, and impact forest growth and carbon sequestration. Understanding the impact of the various drivers of forest growth is therefore critical to predict how forest ecosystems can respond to climate change. We conducted a continental-scale analysis of recent (1995–2010) forest volume increment data (ΔVol, m3 ha−1 yr−1), obtained from ca. 100,000 coniferous and broadleaved trees in 442 even-aged, single-species stands across 23 European countries. We used multivariate statistical approaches, such as mixed effects models and structural equation modelling to investigate how European forest growth respond to changes in 11 predictors, including stand characteristics, climate conditions, air and site quality, as well as their interactions. We found that, despite the large environmental gradients encompassed by the forests examined, stand density and age were key drivers of forest growth. We further detected a positive, in some cases non-linear effect of N deposition, most pronounced for beech forests, with a tipping point at ca. 30 kg N ha−1 yr−1. With the exception of a consistent temperature signal on Norway spruce, climate-related predictors and ground-level ozone showed much less generalized relationships with ΔVol. Our results show that, together with the driving forces exerted by stand density and age, N deposition is at least as important as climate to modulate forest growth at continental scale in Europe, with a potential negative effect at sites with high N deposition.
Authors
Aina Lundon RussenesAbstract
No abstract has been registered
Abstract
Lystgassutslipp har blitt målt over to vekstsesonger i et feltforsøk i Trøndelag med gras gjødsla med stigende mengder nitrogen. Nedbør og temperatur varierte mye i de to åra. Lystgassutslippene var spesielt høye i perioder like etter vårgjødling og like etter gjødsling etter førsteslått dersom jordtemperaturen var over 10°C og jorda var godt fuktig. Avlingsmengden økte ikke i gjødslingsintervallet fra 24 til 32 kg N per daa og år, men lystgassutslippene økte betydelig i samme intervallet. I gjennomsnitt gikk 0,6% av tilført N tapt som lystgass i måleperioden, som ikke omfattet seinsommer, høst og vinter. I rapporten diskuteres om balansert gjødsling, seinere gjødsling og deltgjødsling kan være gode strategier for å minske risikoen for denitrifikasjon og store lystgassutslipp fra eng om våren. Resultatene gir ikke grunnlag for å si at den offisielle utslippsfaktoren for lystgass på 1% av tilført N, bør heves, men samtidig er ikke vinterperioden med, og risikofaktorer som kløverinnslag og bruk av husdyrgjødsel ble ikke dekt av forsøket.
Authors
Kerry O'Donnell Abdullah M. S. Al-Hatmi Takayuki Aoki Balázs Brankovics José F. Cano-Lira Jeffrey J. Coleman G. Sybren de Hoog Antonio Di Pietro Rasmus J. N. Frandsen David M. Geiser Connie F. C. Gibas Josep Guarro Hye-Seon Kim H. Corby Kistler Imane Laraba John F. Leslie Manuel S. López-Berges Erik Lysøe Jacques F. Meis Michel Monod Robert H. Proctor Martijn Rep Carmen Ruiz-Roldan Adnan Šišic Jason E. Stajich Emma T. Steenkamp Brett A. Summerell Theo A. J. van der Lee Anne D. van Diepeningen Paul E. Verweij Cees Waalwijk Todd J. Ward Brian L. Wickes Nathan P. Wiederhold Michael J. Wingfield Ning Zhang Sean X. ZhangAbstract
No abstract has been registered
Abstract
No abstract has been registered