Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2006
Forfattere
Anne Kjersti Bakken Helge Bonesmo Tor Lunnan Olav HarboSammendrag
With the overall aim of improving the phenological function of a decision support tool support for predictions of grass yield and fodder quality , we have tested how appropriately the scale Mean stage by count describes the continuum of phenological events in timothy. Further adaptions to the presented equations describing the functional relationships between temperature and development are suggested.
Forfattere
Maria HerreroSammendrag
P.capsici funnet for første gang i agurk i Norge i 2005
Forfattere
Arja Lilja Mirkka Kokkola Jarkko Hantula Päivi ParikkaSammendrag
At least 60–80 Phytophthora species has been described and most of them are soil-borne pathogens causing damping off, root rot, collar and stem rot and foliar blight on different woody plant species. These microbes are sometimes difficult to isolate and even more difficult to identify. A general review of isolation, detection and some newly identified species, including Phytophthora alni complex and P. ramorum, is presented in this article.
Forfattere
Venche TalgøSammendrag
Det er ikke registrert sammendrag
Sammendrag
Plan for 4 kontruerte våtmarker rundt Jonsvatnet, Trondheim - Konstruerte våtmarker i tilførselsbekker rundt drikkevann for å styrke den hygieniske barrieren.
Forfattere
Svein EilertsenSammendrag
Det er ikke registrert sammendrag
Forfattere
N.H. Sæther H. Sickel Ann Norderhaug O. VangenSammendrag
Det er ikke registrert sammendrag
Sammendrag
Lecture on plant protection in organic farming
Forfattere
Marie Bengtsson Gunnhild Jåstad Geir Kjølberg Knudsen Sverre Kobro Anna-Carin Bäckman Peter WitzgallSammendrag
Plant volatiles mediate host finding in insect herbivores and lead to host fidelity and habitat-specific mating, generating premating reproductive isolation and facilitating sympatric divergence. The apple fruit moth, Argyresthia conjugella Zeller (Lepidoptera: Argyresthiidae), is a particularly suitable species to study the cues and behavioural mechanisms leading to colonization of a new host: it recurrently oviposits on the non-host plant, apple Malus domestica Borkh. (Rosaceae), where the larvae cannot complete their development. The larval host of the apple fruit moth (Lepidoptera, Argyresthiidae), is rowan Sorbus aucuparia L. (Rosaceae). Fruit setting in rowan, however, fluctuates strongly over large areas in Scandinavia. Every 2"4 years, when too few rowanberries are available for egg laying in forests, apple fruit moth females oviposit instead on apple in nearby orchards, but not on other fruits, such as pear or plum. This poses the question of which cues mediate attraction to rowan and apple, and how apple fruit moth discriminates rowan from apple. Chemical analysis and antennal recordings showed that 11 out of 15 rowan volatiles eliciting an antennal response in A. conjugella females co-occur in rowan and apple headspace, in a different proportion. In the field, A. conjugella was attracted to several of these plant volatiles, especially to 2-phenyl ethanol, methyl salicylate, and decanal. Addition of anethole to 2-phenyl ethanol had a strong synergistic effect, the 1 : 1 blend is a powerful attractant for A. conjugella males and females. These results confirm that volatiles common to both plants may account for a host switch in A. conjugella from rowan to apple. Some of the most attractive compounds, including 2-phenyl ethanol, anethole, and decanal, which have been found in several apple cultivars, were not present in the headspace of the apple cultivar, Aroma, which is also susceptible to attack by A. conjugella . This supports the idea that the odour signal from apple is suboptimal for attraction of A. conjugella , but is nonetheless sufficient for attraction, during times when rowan is not available for egg laying.
Forfattere
Åsmund AsdalSammendrag
Det er ikke registrert sammendrag