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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.

2009

Sammendrag

Dekningsbidragskalkylar for Vestlandet for 2009/2010 er utarbeida av NILF, distriktskontoret i Bergen. Kalkylane dekkjer dei tre vestlandsfylka Hordaland, Sogn og Fjordane og Møre og Romsdal, og er ei oppdatering av tidlegare utgjevne kalkylehefte. Kalkylane er no tekne inn i NILFs notatserie og vert lagt ut på NILFs heimeside. Kalkylane finst også i elektronisk form som ein del av planleggingsprogrammet Norkap. I samband med oppdatering av kalkylane er det mellom anna henta inn opplysningar frå samvirkeorganisasjonar og private grossistar. I tillegg er fleire av kalkylane kvalitetssikra hos lokale rettleiarar. Sjølv om det er lagt vekt på å kvalitetssikre kalkylane, kan feil førekomme. Vi set stor pris på om alle som har forslag til opprettingar, forbetringar eller nye kalkylar, tek kontakt med oss slik at vi kan ta omsyn til forslaga ved neste oppdatering.

Sammendrag

Seterlandskapet vekker gode følelser hos mange, men vi kan ha forskjellige innfallsvinkler. Noen ser verdiene i storslagen natur og dyr på beite, andre i tilgjengelighet og tilrettelagte opplevelser. Enkelte har størst interesse av effektivt jordbruk, mens andre er opptatt av historie og tradisjoner. Det ligger store utfordringer i å forvalte et landskap hvor mange og til dels motstridende interesser er involvert. Målet må være både bruk og bevaring.

Til dokument

Sammendrag

Background: Nutrition‟s impact on an individual‟s health and sustainable consumption of food are issues that have long been on both the public and political agenda but are often viewed as two separate debates. This is surprising since many innovation projects in food service systems are concerned with both healthy eating and sustainable consumption (organic food). The relationship between them forms the background in this study. Evidence has shown that caterers serving organic food tend to also serve healthier meals than their non-organic counterparts but, so far, no studies have been carried out in school food environments. Aim: The aim of this report was to investigate and develop appropriate methods for studying the link between healthy eating practices and organic food procurement policies using Danish public elementary schools as a setting. Methods: Based on relevant scientific literature, the Danish Dietary Recommendations, and inspired by other successful studies, a self-administered questionnaire investigating children‟s eating habits was designed. After testing by an Expert Evaluation Panel and Think Aloud Interviews adjustments were integrated. Conclusion: If special attention is given to literacy skills and cognitive development, children in Danish 6th grade classes can be used as respondents in studies of the relation between food procurement policies and eating practice. The study suggests that a Cross-Sectional design is a satisfactory method to investigate the association between organic procurement policies and children‟s eating habits. A variation of a 24-hour Recall study, a Food Frequency Questionnaire and a method developed during the reported study to identify children‟s knowledge of fruit and vegetables may be combined to cover children‟s overall eating habits. The study suggests that representative 6th grade classes at schools with organic food policies can be selected by cluster sampling and matched with corresponding classes at schools without organic food policies, after which the results could be compared.

Sammendrag

A collection of clonal isolates of Podosphaera aphanis was heterothallic, and was composed of two mutually exclusive mating types. Cleistothecial initials approximately 30 µm were observed within 7 to 14 days after pairing of compatible isolates and developed into morphologically mature ascocarps within 4 weeks on both potted plants maintained in isolation and in field plantings in New York, USA and southern Norway.  Ascospores progressed through a lengthy maturation process over winter, during which (i) the conspicuous epiplasm of the ascus was absorbed, (ii) the osmotic potential of the ascospore cytoplasm increased, resulting in bursting of prematurely-freed spores in water, and finally (iii) the development of physiologically mature, germinable, and infectious ascospores. Release of overwintered ascospores from field collections was coincident with renewed plant growth in spring. Overwintered cleistothecia readily dehisced when wetted, and released ascospores onto glass slides, detached strawberry leaves, and leaves of potted plants. Plant material so exposed to discharged ascospores developed macroscopically-visible mildew colonies within 7 to 10 days while non-inoculated controls remained mildew free. Scanning electron and light microscopy studies revealed that cleistothecia of P. aphanis were enmeshed within a dense mat of hyphae on the persistent leaves of field-grown strawberry plants, and were highly resistant to removal by rain while these leaves remained alive. In contrast, morphologically mature cleistothecia on leaves of 11 deciduous perennial plant species were readily detached by simulated rain and seemed adapted for passive dispersal by rain to other substrates.  Contrary to many previous reports, cleistothecia appear to be a functional source of primary inoculum for strawberry powdery mildew. They furthermore differ substantially from cleistothecia of powdery mildews of many deciduous perennial plants in their propensity to remain attached to the persistent leaves of their host during the intercrop period.