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
Khaled Murad AghaSammendrag
Det er ikke registrert sammendrag
Forfattere
Åsmund Mikalsen KvifteSammendrag
I prosjektet INNOFORAGE baserer me oss fyrst og fremst på bøndenes tilbakemeldingar, og set dei i system. Etter eitt anleggsår ser me at dei blandingane som stod best i fjor haust, ikkje treng vera dei blandingane som klarde vinteren best. No ser me fram til fleire tilbakemeldingar slik at me kan fylgja utviklinga gjennom dei fyrste engåra i ulike regionar.
Forfattere
Marit Jørgensen Ragnhild Borchsenius Ellen Elverland Frøydis Gillund Khaled Murad Agha Kauê de Sousa Ievina SturiteSammendrag
A stable supply of high-quality forage is essential for the economic sustainability of milk and meat production, the most important agricultural sectors in Norway. Successful forage production relies on selecting species, cultivars, and seed mixtures suited to the diverse agroecological conditions, which vary widely in latitude and altitude. Climate change modifies production boundaries unpredictably. Without on-farm performance data, there is a risk of recommending new varieties or seed mixtures that underperform in farmers' fields. To address this, we propose the tricot method: a participatory, large-scale, and cost-effective testing approach where farmers test new seed mixtures directly in their fields. This approach involves many farmers in conducting small, simple experiments. Each trial consists of an incomplete block with three options out of the total ten options in the trial. Farmers evaluate these options based on predetermined criteria using digital tools. These mini trials, combined with data on management, climate, and soil, are collected into the ClimMob software, which performs statistical analyses and provides feedback. When all data are aggregated, this approach can provide robust statistical results on optimal seed mixtures for various local conditions. This method also strengthens collaboration between researchers, advisors, and farmers, contributing to more sustainable and resilient agricultural practices.
Forfattere
Marit Jørgensen Ragnhild Borchsenius Ellen Elverland Frøydis Gillund Khaled Murad Agha Kauê de Sousa Ievina SturiteSammendrag
Det er ikke registrert sammendrag
Sammendrag
Energy-efficient greenhouse climate control is important in high-latitude regions, where heating demand is high and minimizing environmental impacts is increasingly necessary. In this study, a novel centralized environmental control system (ECS) was implemented in a semi-closed tomato greenhouse under Norwegian conditions. The ECS integrates heating, cooling, dehumidification, and heat recovery through air-to water heat exchangers, a heat pump, and thermal energy storage system to support climate control and energy management. The ECS was monitored across three tomato production experiments conducted during summer and winter seasons, and its operational performance was evaluated based on greenhouse climate, tomato yield, and energy use. The experiments included variations in temperature setpoints and cooling capacity. The ECS maintained greenhouse climate that was suitable for tomato production across all experiments. Changes in temperature setpoints and cooling capacity affected ECS electricity consumption and influenced the balance between recovered heat and boiler heating, while having limited effects on tomato yield. The results indicate the potential of centralized ECS technology to sustain tomato production while reducing reliance on fossil-energy, supporting the transition towards energy-efficient and emission-free smart greenhouse production.
Sammendrag
Greenhouse tomato production at high latitudes requires substantial inputs of supplemental lighting, heating and climate control. (Semi-) closed greenhouses can improve heat, water and CO₂ retention, but require additional electricity, climate control system capacities and investment. Crop productivity and resource use must therefore be evaluated jointly. This paper presents the EFREE-Green systems framework for integrating local production conditions, greenhouse environmental control, crop physiological responses, resource flows, and economic and environmental performance. The framework is implemented in two experimental greenhouse compartments operating at a semi-commercial scale at NIBIO Særheim, Norway, connected to a centralized environmental control system (ECS). Measurements at leaf, canopy and greenhouse scale link environmental control with crop carbon gain, biomass partitioning, marketable yield and resource use. Illustrative observations demonstrate that crop responses to supplemental lighting depend on interactions among light availability, CO₂ supply and climate management. Experimental measurements, modelling, techno-economic assessment and life-cycle assessment are combined to evaluate crop productivity, energy efficiency, resource recovery, production costs and greenhouse gas emissions. The framework is transferable to other climatic and production settings, but optimal technologies, capacities and control strategies remain location-specific.
Forfattere
Vibeke LindSammendrag
This report reviews the potential use of seaweed as a feed ingredient for ruminants under Northern-Norwegian conditions. Seaweed has a long history in coastal livestock farming, especially where conventional forage was scarce, but its use declined as farms became larger, more specialised and dependent on high-quality feeds. Renewed interest is driven by the need to increase national feed self-sufficiency, reduce reliance on imported protein sources, and explore strategies to lower enteric methane emissions. Seaweed species differ greatly in nutritional value, digestibility, mineral composition and effects on rumen fermentation. Red species such as Porphyra and Palmaria palmata appear most promising as protein sources, whereas several brown species show lower protein digestibility and may contain high iodine levels or potentially harmful elements. Preservation is a major barrier because fresh seaweed decomposes rapidly; ensiling, drying and multi-nutrient blocks require further development to improve dry matter content, palatability, shelf-life and nutrient quality. Seaweed has also been studied as a methane inhibitor. Asparagopsis can strongly reduce methane emissions, but concerns about bromoform content, animal health, productivity and suitability for Norwegian systems limit its relevance. Norwegian studies with locally available seaweeds have not shown consistent in vivo methane mitigation. Overall, seaweed may support more circular and locally based feed systems, but practical use requires species-specific evaluation, safe inclusion levels, improved preservation methods and stronger in vivo documentation.
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Håvard SteinshamnSammendrag
Det er ikke registrert sammendrag
Forfattere
Khaled Murad AghaSammendrag
NIBIO, avdeling Fôr og husdyr, har i samarbeid med Norsk landbruksrådgiving (NLR) testet norske sorter av engsvingel. Målet med serien var å studere overvintring og avling ved to eller tre slåtter, og registrere sjukdomsangrep i gjenveksten av godkjente engsvingelsorter under ulike dyrkingsforhold. Det er i dag 16 godkjente sorter, men få sorter er i salg. Forsøket var todelt: en serie med mest sørlig tilpassa sorter og en serie med mest nordlig tilpassa sorter, totalt ti sorter i hvert felt. Noen sorter var med i begge seriene. Sortene ble etablert i 50/50-blanding med den best tilpassa timoteisorten for lokaliteten. Totalt ni feltforsøk ble gjennomført, med fire med nordlig tilpassa sorter og fem med sørlig tilpassa fordelt på totalt åtte lokaliteter. Resultatene viste små forskjeller mellom sortene. Selv om enkelte sorter hadde høyere tørrstoffavling og fôrenhetsproduksjon, var forskjellene ikke statistisk signifikante. Fôrkvaliteten var også relativt lik mellom sortene, med mindre variasjon i råprotein, fiberfraksjon (NDF) og fordøyelighet. Registreringene av soppsykdommer var begrenset, og det ble ikke observert tydelige forskjeller i motstandsevne mellom sortene. På grunn av manglende signifikante forskjeller kan det ikke gis en konkret anbefaling om hvilke sorter som bør prioriteres.