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.
2008
Forfattere
Nina TrandemSammendrag
I 2008 har det både i Telemark og Hedmark vært alvorlig skade av bladveps i solbær. Vi vet ikke hvilken art det dreier seg om, det kan også være flere arter. Men det er ikke stikkelsbærbladveps (Nematus ribesii) siden denne ikke angriper sobær.
Forfattere
Nina TrandemSammendrag
Det er ikke registrert sammendrag
Sammendrag
Berry damage by the larva of raspberry beetle (Byturus tomentosus) is a major risk for growers of organic raspberry. The identification of two volatile compounds in raspberry flowers that are attractive to the beetle by scientists at SCRI has facilitated the idea of mass trapping as an alternative control method to using conventional insecticides. The challenges are to design efficient and user-friendly traps, and to document if and how such traps can reduce the number of ovipositing beetles sufficiently to get a low level of berry damage. These questions are being investigated as part of a large U.K. project (Defra HortLINK) which is developing IPDM (Integrated Pest and Disease Management) for protected raspberries. We here report the results from a cooperating Norwegian project in which the volatile ‘compound B" was used in pilot trials, 2003-2006. A combined collision-funnel trap from SCRI and AgriSense with the compound in a slow release lure attracted and killed a high number of raspberry beetles in the weeks before flowering, but more studies are needed to find a trap strategy that consistently leads to less berry damage. Norwegian organic fields are small, with large populations of raspberry beetle, and usually with wild raspberry growing nearby. A successful mass trapping strategy must therefore pay equal attention to immigrating and resident beetles.
Foredrag – Massefangst av bringebærbille. Erfaringer fra tidligere år - planer for 2008
Nina Trandem
Forfattere
Nina TrandemSammendrag
Det er ikke registrert sammendrag
Forfattere
Nina TrandemSammendrag
Det er ikke registrert sammendrag
Forfattere
Jerry Cross Catherine Baroffio Alberto Grassi David Hall Barbara Labanowska Slobodan Milenkovic Thilda Nilsson Margarita Shternshis Christer Torneus Nina Trandem Gabor VetekSammendrag
The sex pheromone of the raspberry cane midge has been identified and synthesised by East Malling Research and Natural Resourced Institute and has proved to be highly attractive and useful for pest monitoring. EMR coordinated a collaborative ring test of standard raspberry cane midge sex pheromone traps in 2006. The aims were to investigate the seasonal temporal pattern of the midge flight in different raspberry production regions of Europe and the relationship between the magnitude of catches and the numbers of eggs and larvae which developed subsequently in artificial splits in the primocane of untreated raspberry plantations. The standard raspberry cane midge sex pheromone trap used for the ring test consisted of a white delta trap containing a 20 x 20 cm sticky base and a rubber septum lure impregnated with 10 μg of the raspberry cane midge sex pheromone racemate. Pairs of traps, separated by >20 m, were deployed in the centre of raspberry plantations at a height of 0.5 m in Italy, Hungary, Norway, Poland, Russia, Serbia, Sweden, Switzerland, and the UK. The traps proved effective and easy to use for monitoring the flight of adult male raspberry cane midge. There were very large variations (> 30 fold) between plantations in total numbers of midges caught over the season, indicating plantations which are at comparatively low and high risk from the pest. Three generations of adult flight were apparent in Norway, Russia and Sweden and four generations in the central European countries with possibly 5 generations in Italy, though later generations were often difficult to distinguish. In the northern countries, the 1st generation first and peak flight occurred on Julian days 150 and 165, respectively, whereas in Italy the 1st generation first and peak flight occurred approximately on Julian days 110 and 130 respectively. The 1st generation flights occurred much earlier in polytunnel protected crops than in open field crops. Data obtained on the occurrence of larvae were variable in quality but a linear relationship between the peak numbers of males captured in the pheromone traps per week for a given generation (M) and the peak numbers of eggs and larvae per cm in splits in the primocanes for that generation subsequently (L) was apparent (L = 0.025 M; R2=0.61). A nominal threshold of 30 midges per trap per week had been proposed but the linear relationship derived indicates that this threshold, which would result in ~ 0.75 eggs + larvae/cm, is too high. In reality, the degree of larval infestation that occurs and the resultant severity of crop damage will depend on the numbers of natural splits in the crop. The ring test is being continued in several countries in 2007.
Forfattere
Nina TrandemSammendrag
Det er ikke registrert sammendrag
Forfattere
Ingeborg KlingenSammendrag
Det er ikke registrert sammendrag
Forfattere
Ingeborg KlingenSammendrag
Det er ikke registrert sammendrag
Forfattere
Ingeborg KlingenSammendrag
Det er ikke registrert sammendrag