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
Sammendrag
Cavity spot (Pythium spp.), liquorice rot (Mycocentrospora acerina) and crater rot (Fibularhizoctonia carotae) are important carrot diseases. Cavity spot develops during the growing season, while the latter two are post harvest diseases. Five Pythium "species" were identified as agents of cavity spot in Norway; P. intermedium, P. sulcatum, P. sylvaticum, P. violae and P. "vipa" (probably a new species). Based on unique sequence regions in the ITS, PCR primers were designed to identify the five Pythium "species" and the two post harvest pathogens. PCR detection was species-specific with no cross-reaction to other Pythium species or to other fungal isolates from carrots. At different points in the growing season, soil and carrots were sampled from farm fields in Norway. PCR assays allowed detection of pathogens in both soil and carrot tissue. PCR results from samples of soil adhering to roots late in the growing season corresponded well with the incidence of cavity spot and liquorice rot on carrots after 6 months storage. PCR assay data from soil samples taken within 14 days after sowing carrots also predicted cavity spot incidence reasonably well. There was little incidence of crater rot during the experimental period, which did not allow proper evaluation of the test for F. carotae. Commercial testing of carrot soils is now available through the company "Carrotech" and work is in progress to implement quantitative PCR.
Forfattere
Gunnhild Wærsted TakleSammendrag
Det er ikke registrert sammendrag
Sammendrag
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Forfattere
Dag-Ragnar BlystadSammendrag
Pepinomosaikkvirus har forårsaket mye bekymring i mange land siden det først ble påvist i Nederland og England i 1999. I Norge har vi bare hatt to kjente tilfeller " det første var i 2001, det andre i 2003. Utover dette har ikke pepinomosaikkvirus vært påvist i norske gartnerier. Det har imidlertid tidvis vært mye symptomer som ligner de pepinomosaikkvirus forårsaker på importerte tomatfrukter. De siste årene har det dukket opp mer alvorlige stammer av viruset. For norske dyrkere og veiledere er det fortsatt viktig å være klar over symptomer og smitteveier slik at en kan stoppe et eventuelt utbrudd av dette viruset så raskt som mulig dersom det skulle forekomme nye tilfeller av dette viruset her i landet.
Sammendrag
The performances of the plum rootstocks Plumina® Ferlenain, Ishtara® Ferciana, Jaspi® Fereley and the pentaploid open pollinated seedling of Mariana P 8-13 compared with St. Julien A as a standard, for the cultivars "Opal" and "Reine Claude GF 1119" were assessed in a field trial in western Norway at 60" North. This trial was one part of an international plum rootstock trial located in seven European countries and organized from INRA Bordeaux. Trees were planted in spring 1994; spaced 2.0 x 4.0 m and formed with a central leader as free spindles. Soil management was grass in the alleyways and herbicide strips 1-m wide along the tree rows. Tree vigour, yield, fruit size and yield efficiency were evaluated for the seven subsequent years. Tree size was significantly affected by the rootstocks. P 8-13 produced the largest trees for both cultivars as measured by trunk cross-sectional area. The smallest trees were produced on Plumina® Ferlenain for the cultivar `Opal" and on Jaspi® Fereley for `Reine Claude". The cultivar `Opal" was the most productive and gave three times larger crop than "Reine Claude" on average for the six cropping years. The "Reine Claude" trees came two years later into production than "Opal". There were small differences between the different rootstocks in productivity: However, the rootstock Plumina® Ferlenain produced significant lower crop than the other rootstock for `Opal". Trees on Jaspi® Fereley were the most yield efficient for `Opal" and Plumina® Ferlenain for `Reine Claude". The fruit sizes were in general medium to small for both cultivars and became little affected by the different rootstocks. The average fruit size was about 29 g for `Opal" and 22 g for `Reine Claude". Fruit quality characterized by the content of soluble solids was high for `Reine Claude" with average 20 % and 15 % for `Opal" and did not differ much between trees on the various rootstocks.
Sammendrag
The performances of the plum rootstocks Ferlenain, Ishtara, Jaspi and P 8-13 compared with St. Julien A as a standard, for the cultivars `Opal" and `Reine Claude GF 1119" were assessed in a field trial in western Norway at 60° North. This trial was one part of an international plum rootstock trial located in seven European countries and organized from INRA Bordeaux. Trees were planted in spring 1994; spaced 2.0 x 4.0 m and formed with a central leader as free spindles. Soil management was grass in the alleyways and herbicide strips 1-m wide along the tree rows. Tree vigour, yield, fruit size and yield efficiency were evaluated for the seven subsequent years. Tree size was significantly affected by the rootstocks. P 8-13 produced the largest trees for both cultivars as measured by trunk cross-sectional area. The smallest trees were produced on Ferlenain for the cultivar `Opal" and on Jaspi for `Reine Claude". The cultivar `Opal" was the most productive and gave three times larger crop than "Reine Claude" on average for the six cropping years. The `Reine Claude" trees came two years later into production than `Opal". There were small differences between the different rootstocks in productivity: However, the rootstock Ferlenain produced significant lower crop than the other rootstock for `Opal". Trees on Jaspi were the most yield efficient for `Opal" and Ferlenain for `Reine Claude". The fruit sizes were in general medium to small for both cultivars and became little affected by the different rootstocks. The average fruit size was about 30 g for `Opal" and 25 g for `Reine Claude". Fruit quality characterized by the content of soluble solids was high for `Reine Claude" with average 20 % and 15 % for `Opal" and did not differ much between trees on the various rootstocks.
Forfattere
Nils VagstadSammendrag
Det er ikke registrert sammendrag
Forfattere
Ole Martin EkloSammendrag
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Forfattere
Gro Hege Ludvigsen Olav LodeSammendrag
Statistikk og spredningsveier Søkespekter Miljøfarlighetsgrenser Resultater bekker og elver Resultater enkeltpesticid Konklusjoner
Sammendrag
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