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.
2012
Authors
Tore SkrøppaAbstract
No abstract has been registered
Authors
Guro BrodalAbstract
Sydowia polyspora was found to be seed borne on true fir (Abies spp.) where it is associated with two serious diseases; current season needle necrosis (CSNN) and Sclerophoma shoot dieback [1]. To our knowledge, S. polyspora was previously only reported to be seed borne on Scots pine (Pinus sylvestris) [3]. In 2009, we discovered S. polyspora on Norway spruce (Picea abies) seedlings from germination tests at the Norwegian Forest Seed Center. This indicated that S. polyspora also was seed borne on spruce. Based on this, we wanted to investigate how widespread S. polyspora was on conifer seeds. In 2010, we tested 44 seed lots from 8 genera. S. polyspora was isolates from seeds from the following genera; Abies, Larix, Picea, Pinus, Pseudotsuga, Thuja, and Tsuga. Interestingly, they are the exact same genera that Funk [2] reported S. polyspora from on diseased foliage and shoots. We found S. polyspora on Norway spruce harvested in 1970, thus, the fungus may survive for decades in seed lots. In Norway, Sclerophoma shoot dieback has been found on Norway spruce in Christmas tree fields. Fungal species from a number of other genera were also detected in the seed test, but here we only report S. polyspora.
Abstract
Farmers attempt to develop a different environment for rice under System of Rice Intensification (SRI) method by which the rice plants can exhibit their full potential. Major principles of SRI includes perfect land levelling, lower seed rate, transplanting young seedlings of 12 days old, single seedling / hill with wider spacing (25 x 25 cm), careful water management (applying a minimum of water during vegetative growth and at later stages maintaining only one inch water) and weed management using cono weeder thrice in the vegetative stage. Researchers and farmers’ experience in the Cauvery basin in Tamil Nadu from ClimaRice have shown that yields of rice could be increased considerably (18–27%) with reduced water consumption (22- 25%) and less expenditure, just by following SRI method of cultivation. Thus it is beneficial for small and marginal farmers under changing climatic conditions.
Abstract
The aim of this paper is to complete the studies of the genus Stenostola in Northern Europe. Together with previous published studies the characters presented form a better basis for separation of S. ferrea and S. dubia both as imagines and as larvae. The presented paper consists of three parts: Studies of the genitalia, morphological characters for identification of the larvae and DNA barcoding of both Stenostola dubia (Laicharting, 1784) and S. ferrea (Shrank, 1776). Although very similar, the male genitalia have good characters for species separation. The easiest characters to use are the parameres and tips of sclerite 2. The posterior ends of the elongated median sclerites of S. ferrea are irregularly curved or “zigzag” shaped, while the posterior ends of the median sclerites of S. dubia are straight. The genitalia characters presented are not previously published. No single morphological character alone is enough to identify the larvae to species. However, when the characters are used together the mature larvae are usually identifiable. The younger the larvae are, the more difficult they are to identify. Barcoding analysis of mitochondrial COI gene shows that S. ferrea and S. dubia are genetically different. The genetic distance between the species is 10.3 %. These results, in addition to previous findings, show that despite the morphological similarities, they are clearly two different species.
Authors
Subal Chandra Kumbhakar Gudbrand Lien J. Brian HardakerAbstract
No abstract has been registered
Authors
Belachew Asalf Tadesse Arne Stensvand David Gadoury Lance Cadle-Davidson Robert C. Seem N.A. Peres Arne TronsmoAbstract
No abstract has been registered
Authors
Belachew Asalf Tadesse Arne Stensvand David Gadoury L. Cadle-Davidson R.C. Seem N.A. Peres Anne Marte TronsmoAbstract
No abstract has been registered
Authors
Merete Grung Sissel Ranneklev Øyvind Garmo Richard Frederic Wright Tor Myking Einar Heegaard Bernt-Håvard Øyen Fride Høistad Schei Hans Haavardsholm BlomAbstract
CO2 Technology Centre Mongstad will be the world\"s largest test centre for testing and development of CO2 capture technology. The emissions to the atmosphere from CO2 Technology Centre Mongstad contain amines and may in addition contain or lead to the formation of degradation products from amine-based CO2 capture technology. An environmental baseline survey was conducted in 2011 prior to the operation. The survey performed is broad, and describes in detail the environmental situation both in terrestrial and aquatic ecosystems as well as relevant chemical compositions of a range of matrices such as soil, plants and water. The data collected in the monitoring program were used to propose a future monitoring program in the area.
Authors
Claire Coutris Mussie Woldehawariat Erik J. Joner John W Einset Deborah Helen Oughton Knut-Erik TollefsenAbstract
No abstract has been registered
Authors
Mette Algreen Arno Rein Charlotte N. Legind Carl Amundsen Ulrich Gosewinkel Karlson Stefan TrappAbstract
No abstract has been registered