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.
2026
Forfattere
Thiago Inagaki Frederik Bøe Ievina Sturite Meike Sophie Bärmann Franziska Bucka Alice Budai Anders Aas Daniel RasseSammendrag
High-latitude regions pose challenges for soil organic matter (SOM) sequestration and for improving soil fertility due to low temperatures, which shorten growing seasons and promote off-season nutrient leaching. Even long-term experiments on conservation practices have shown only modest increases in C storage. Nonetheless, persistent SOM fractions, such as mineral-associated organic matter (MAOM), have been shown to improve relatively quickly through conservation practices in temperate regions, which could be key in high-latitude regions. MAOM is an important SOM fraction not only for promoting carbon (C) storage but also for providing an available form of nitrogen (N) for plant nutrition. In this study, we show that, in Norwegian agriculture (63.9°N), MAOM (C and N) stocks improved only after three years of implementing cover crop systems that combined 1 to 4 cover crops with cereals (barley or oats) intercropped simultaneously (12 Mg ha-1 for C and 1.1 Mg ha-1 for N in the 0-20 cm layer more compared to unfertilized Control plots). Cover crops containing red and white clover and ryegrass efficiently increased the MAOM fraction in soil. An increase in root biomass and changes in root morphology were the primary factors linking cover crops to MAOM improvements in this field. In addition to benefits for SOM stocks, we recorded improvements in microbial abundance, soil structure, nutrient cycling, and cereal physiology. Our findings help to reframe MAOM as a bioavailable nutrient pool essential for soil health and nutrient cycling, which can be improved in the relatively short term through root development.
Sammendrag
Purpose Advanced remote sensing and imagery technology help to estimate variability in grass ley plant coverage (PC). Adjusted manure and fertiliser application rates can be derived according to this variability, by means of machine learning and advanced image processing. This study aimed to determine the effects of variable nitrogen (N) rate from manure and synthetic fertiliser application on a grass ley field experiment in southwestern Norway, thereby generating N rate recommendations. The effects on dry matter yield, N use efficiency, and forage nutritive value were determined. Methods A field experiment was conducted in 2022-2023 and repeated in 2023-2024, estimating PC using digital processing of autumn and spring aerial images to determine fertiliser rates. Three fixed and two variable manure and mineral N rates were applied in early spring and after the first and second cuts. Forage dry matter yield (FDMY) and agronomic N use efficiecy (AgNUE) were evaluated over two seasons. Results A low or variable N rate based on spring coverage led to FDMY and AgNUE comparable to high N rates. Spring and autumn coverage during the second season improved slurry application decisions, offering a valuable tool for grassland management. The N rate-response model effectively represented the nonlinear behaviour of FDMY, revealing a strong concave response to N rates, significant seasonal variations, and a notable flattening of the response in 2024. Predicted curves indicated that the most beneficial N application occurs in earlier cuts, as late-season applications showed diminished yield leverage under 2024 conditions. Conclusion Image analysis can effectively support variable-rate fertiliser recommendations for perennial grasslands, although such approaches only improved N usage in one of two years. Whilst variable-rate application (VRA) is resilient during constrained regrowth years, interannual weather variability and seasonal conditions significantly influenced N responsiveness, indicating the necessity for calibrating cover-based models to enhance nutrient management efficiency under varying climate conditions.
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Norske forbrukere velger jordbær først og fremst etter smak. Nå viser ny forskning at nettopp norske lys- og temperaturforhold kan være en viktig forklaring på smaken mange forbinder med norske jordbær – kunnskap som kan bli viktig når produksjonen moderniseres.
Sammendrag
Norske forbrukere velger jordbær først og fremst etter smak. Nå viser ny forskning at nettopp norske lys- og temperaturforhold kan være en viktig forklaring på smaken mange forbinder med norske jordbær – kunnskap som kan bli viktig når produksjonen moderniseres.
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
The sensory appeal of strawberry (Fragaria × ananassa) depends on its chemical composition, including sugars, organic acids, and aroma-active volatiles. To investigate the effects of temperature and light conditions on fruit quality, strawberry plants (cv. Sonsation) were grown at six temperature regimes (9, 12, 15, 18, 21 °C, and 21/9 °C-day/night) and four combinations of light intensities (150 and 300 μmol/m2/s) and photoperiods (12 and 24 h/day). Yield, °Brix/acidity ratio and volatile compounds were assessed. °Brix increased with light intensity and photoperiod, while higher temperatures (15–21 °C) correlated with acidity. A favorable °Brix/acidity ratio correlated with both continuous light and high light intensity, as well as low ripening temperature. Volatile content peaked at 15 °C, and declined at 9 °C, proportionally elevating acids and reducing terpenoids. The findings indicate that extended high-intensity light can optimize sweetness and aroma in cv. Sonsation, whereas low temperatures benefit the °Brix-acidity balance but may reduce volatile compound development.
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
En norsk afprøvning af både nye og kendte hindbærsorter til tunneldyrkning i 2023-2025 giver et billede af udbytte, tidlighed, smag og fasthed hos de enkelte sorter.
Sammendrag
Fire ulike saltvassbaserte fiskeslam frå matfisk blei testa som gjødsel til eittårig raigras i eit potteforsøk i veksthus, og samanlikna med behandling utan gjødsel og planter tilførd mineralgjødsel. Alle typar slam vart doserte i ei mengde tilsvarande 3 kg fosfor/dekar. Gjødseleffekten til fosfor i fiskeslam var kring 45 % sammenliga med fosfor i mineralgjødsel for tre av fiskeslamslaga og 26 % for det fjerde. Fosforeffekten til fiskeslam var sannsynlegvis negativt påvirka av uønska høgt pH i jorblandinga brukt i forsøket. Nitrogen-effekten av fiskeslammet er estimert til å vera fråverande eller negativ. Bruk av fiskeslam gav ikkje problem med uynskte sporstoff inkludert salt eller andre giftige grunnstoff. Det er sannsynleg at me bør sjå på slammet som ei råvare til vidare foredling snarare enn eit fullt ferdig gjødselprodukt.