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
Sammendrag
Beitebruk er viktig for ressursutnyttelse, selvforsyning, dyrevelferd og kulturlandskap, og det er et politisk mål å øke beiting. Klimaeffektene av beiting har imidlertid vært lite vektlagt. Rapporten sammenstiller kunnskap om hvordan beitedyr påvirker klima gjennom både klimagassutslipp og endringer i vegetasjon og areal. Effektene varierer betydelig mellom arealtyper, beitetrykk, dyreslag og lokale forhold, noe som gjør det vanskelig å trekke generelle konklusjoner. I klimagassregnskapet er beiting særlig relevant for arealbruksendringer, som avskoging til beite og utslipp fra tidligere drenert myr. Effekter på enterisk metan og utslipp fra husdyrgjødsel er relativt små, selv om enkelte norske studier antyder noe lavere metanutslipp ved godt beite på fulldyrka jord. Biogeofysiske effekter som albedo er lite kartlagt, men kan ha nedkjølende effekt i noen områder. Rapporten peker på to hovedutfordringer: behov for sterkere insentiver til å bruke eksisterende innmarksbeiter fremfor nyrydding, og potensial for mer beiting av melkekyr på fulldyrka jord. Det trengs mer forskning for å bedre beregne effekter av beiting i klimagassregnskapet, særlig knyttet til enterisk metan, jordkarbon og beitetrykk i utmark.
Sammendrag
Abstract Background and Aims Efficient phosphorus (P) and management is essential for sustainable arable systems. Cover crops (CCs) are promising, but their performance is uncertain in high-latitudes. This three-year study evaluated CCs’ effects on P dynamics in a P-rich soil undersown in barley in Mid-Norway (63.9°N)—one of the northernmost trials of its kind. Methods A randomized complete block design included three CC treatments: ryegrass (CC1), a ryegrass–clover mix (CC2), and a four species mix including grass, legumes and herbs (CC3), and controls without CC (with/without NPK fertilizer). Soil and plant analyses included total and available P, total N, potentially mineralizable N (PMN), pH, permanganate-oxidizable carbon, root biomass, plant P concentrations, and microbial abundance via qPCR. Statistical analysis was based on Linear Mixed Models (LMMs). Results Cover crops successfully established (average biomass: 1525 kg ha⁻ 1 ), accumulated ~ 7 kg P ha⁻ 1 , and did not reduce barley yields. LMMs showed significant effects of CC treatment on root biomass, total P, and bacteria. Pairwise comparisons also revealed that fungal abundances in CC1 and CC3 were significantly higher than in the unfertilized control. Pairwise regression revealed that soil total P was strongly predicted by root biomass (β = 1.37, P < 0.001). Available P was negatively controlled by microbial pools (Bacteria: β = -9.22, P < 0.001) and residue quality (C:P ratio: β = -0.36, P < 0.001). Conclusions CCs can be used at 63°N without yield penalty. The primary P mechanism is mass-driven sequestration (root biomass) into the stable total P pool. However, P availability is temporally constrained by residue quality and microbial competition. Graphical Abstract
Sammendrag
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Sammendrag
This year marked a milestone in the history of GGAA. With over 450 participants from around 50 countries, GGAA2025 reflected our community’s truly global reach. Since its first meeting, GGAA has continued to evolve and grow in scope and themes, reflecting advances in science and the changing realities of agriculture and climate. During the opening ceremony, we highlighted challenges and opportunities for mitigating greenhouse gas emissions from ruminant livestock in Latin America, Africa, and Asia. This year we presented nine themes addressed in eight keynote presentations and 17 breakout sessions across livestock, climate, and sustainability. We also succeeded in sponsoring more than 50 researchers, including many students from non-OECD countries, whose voices are essential for shaping the future of our field. GGAA2025 placed strong emphasis on scaling solutions and addressing regional priorities, such as carbon finance. With the presence of the World Bank and IFAD, alongside our partners and sponsors, we hosted side events that brought greater focus to specific issues vital to Africa and low- and middle-income countries from Asia and Latin America. The combination of cutting-edge research, regional dialogue, and global policy engagement ensured that GGAA2025 was a platform for academic exchange addressing directly realworld problems.
Sammendrag
Utredingen redegjør ulike dekker på lager for svinegjødsel i Norge og effekt på reduksjon av klimagasser og ammoniakk. Kostnadene forbundet med ulike alternativer er beregnet. Det sees nærmere på differensiering av et lovkrav, praktisk gjennomføring for bonden og hvordan utslippsreduksjoner fra dekket kan fanges opp i det nasjonale utslippsregnskapet.
Sammendrag
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Forfattere
Ffion Evans James Gibbons Luciana Bava Dave Chadwick Stefania Colombini Valborg Kvakkestad Lampros Lamprinakis Vibeke Lind Martina Pavesi Prysor Williams Sophie Wynne-JonesSammendrag
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Forfattere
James O’Malley John A. Finn Carsten S. Malisch Matthias Suter Sebastian T. Meyer Giovanni Peratoner Marie-Noëlle Thivierge Diego Abalos Paul R. Adler T. Martijn Bezemer Alistair D. Black Åshild Ergon Barbara Golińska Guylain Grange Josef Hakl Nyncke J. Hoekstra Olivier Huguenin-Elie Jingying Jing Jacob M. Jungers Julie Lajeunesse Ralf Loges Gaëtan Louarn Andreas Lüscher Thomas Moloney Christopher K. Reynolds Ievina Sturite Ali Sultan Khan Rishabh Vishwakarma Yingjun Zhang Feng Zhu Caroline BrophySammendrag
High-yielding forage grasslands frequently contain low species diversity and receive high inputs of nitrogen fertilizer. To investigate multispecies mixtures as an alternative strategy, the 26-site international LegacyNet experiment systematically varied the diversity of sown grasslands using up to six high-yielding forage species (grasses, legumes, and herbs) managed under moderate nitrogen inputs. Multispecies mixtures outyielded two widely used grassland practices: a grass monoculture with higher nitrogen fertilizer and a two-species grass-legume community. High yields in multispecies mixtures were driven by strong positive grass-legume and legume-herb interactions. In warmer sites, the yield advantage of legume-containing multispecies mixtures over grass monocultures with higher nitrogen fertilizer inputs increased. Improved design of grassland mixtures can inform more environmentally sustainable forage production and may enhance adaptation of productive grasslands to a warming climate.
Sammendrag
Cover crops enhance soil quality and organic matter stability, yet the mechanisms linking belowground inputs to persistent soil organic matter (SOM) remain unclear. This study examined the effects of diversified cover cropping in barley systems on root biomass, SOM fractions, soil structure, microbial activity, and yield in central Norway (63.9° N), three years post-implementation. Six treatments were tested: (1) Control (barley without NPK), (2) Biochar-Fertilizer (barley + NPK + 3 Mg ha⁻¹ biochar), (3) Monocrop (barley), (4) Ryegrass (barley + ryegrass), (5) Clover (barley + ryegrass + white/red clover), and (6) Chicory (barley + ryegrass + red clover + chicory + bird’s-foot trefoil). Ryegrass and Clover systems produced 28.65 g m-² more root biomass at 0–13 cm (p < 0.05) and, along with Monocrop, stored 2.2 Mg ha-¹ more mineral-associated organic matter (MAOM) carbon and 0.2 Mg ha-¹ more MAOM nitrogen at 0–20 cm than other treatments. The Chicory system improved soil structure and biology, with higher aggregate stability, lower bulk density, and greater microbial abundance. Barley yields remained consistent across treatments, suggesting that cover cropping and low biochar inputs do not reduce productivity. Strong correlations (p < 0.01) between root biomass and MAOM stocks highlight root development as a key driver of SOM stabilization via organo-mineral associations. These findings underscore the role of root-enhancing cover crops in promoting MAOM formation and long-term SOM persistence, offering valuable insights for sustainable soil management.
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