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
Ingunn M. VågenSammendrag
Nye løkvekster. Er det mulig å dyrke søtløk i Trøndelag? Løksatsing i Bioforsk.
Forfattere
Nils Lexerød Terje GobakkenSammendrag
Det er ikke registrert sammendrag
Forfattere
Audun KorsæthSammendrag
Det er ikke registrert sammendrag
Forfattere
Ann NorderhaugSammendrag
Det er ikke registrert sammendrag
Forfattere
Hans OvergaardSammendrag
Det er ikke registrert sammendrag
Sammendrag
The large arionid slug Arion lusitanicus is a serious pest in parts of northern Europe including many parts of Norway. In Norway it has mainly been a pest in home gardens but in recent years it has also spread to horticultural and vegetable crops such as strawberry and lettuce. This latter aspect is of great concern and a research project was initiated in 2005 to study the biology and control of this pest. The main aim of the project is to develop direct and preventive measures to reduce damage and further spread of the slug. To achieve this aim, the life-cycle, population dynamics and over-wintering strategies needs to be determined, as well as the distribution of the slug in the country. Direct and preventive measures are studied in gardens, in crops and in more controlled conditions. The studies include the use of biological agents such as the slug-parasitic nematode Phasmarhabditis hermaphrodita
Sammendrag
The life-cycle, overwintering stategy and control of Arion lusitanicus in Norway is documented and discussed.
Forfattere
Ricardo Holgado Stig Andersson Christer MagnussonSammendrag
Cereal cyst nematodes, Heterodera spp. are known world-wide as parasites of cereals and grasses. Surveys of cereals in Norway have revealed that nematodes belonging to the H. avenae complex occur throughout the country, and that H. avenae (oat cyst nematode) is the most common species followed by H. filipjevi (rye cyst nematode). H. avenae and H. filipjevi are of economic importance in Scandinavia. H. avenae has two common pathotypes, Ha 11 and Ha 12. Work in Sweden, however, has detected the three additional pathotypes H. avenae- Knislinge, H. avenae- Ringsåsen and H. avenae- Våxtorp. These pathotypes were detected also in the Norwegian surveys. In Sweden H. filipjevi has two pathotypes, "East" and "West". In Norway, only the pathotype "West" has been detected so far. Nematode management practices must be based on the knowledge of the population dynamics, the population density required to cause economic damage, and the measures capable of reducing or keeping the population density below the threshold for economic damage. Crop rotation and the use of cultivars with resistance are important measures for controlling cereal cyst nematodes. For several years it has been known that resistance to cereal cyst nematodes may be found in some commercial cultivars, although no conscious breeding for resistance has been attempted. In 2004 and 2005 a majority of cereal cultivars on the Norwegian market were tested for susceptibility/resistance towards H. avenae pathotype Ha 11, H. avenae pathotype "Våxtorp" and H. filipjevi pathotype "West" The test program included 30 cultivars of barley, 23 cultivars of oats and 6 cultivars of summer wheat. The objective of this work was to increase our knowledge on cultivar selection for farmers. Resistance against Ha11 was found in 5 barley, 3 oat cultivars and in 1 wheat cultivar. Resistance against H. avenae pathotype "Våxtorp" was not present in barley, but 4 oat cultivars, and 1 wheat cultivar were resistant. For H. filipjevi "West" resistance was not detected in wheat, but in 6 barley and 13 oat cultivars. In Norway management systems based on careful nematode identification and good knowledge on appropriate resistant cultivars are in operation. Resistant barley is generally recommended when nematode populations are high due to its high tolerance compared to resistant oats. Farmers implementing this program have reported increased cereal yields on the average of 1000 kg /ha. It has been calculated that by implementing this program in full the county of Vestfold could make an economic gain of 800 000 " annually.
Forfattere
Ricardo HolgadoSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag