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.
2024
Forfattere
Thomas Georges A Bawin Marte Marie Fossum Ranvik Sigridur Dalmannsdottir Egle Norkeviciene Rita Armonienė Erik Alexandersson Laura Elina JaakolaSammendrag
Climate change is increasingly affecting agricultural systems, impacting the productivity and digestibility of forage crops that are essential for livestock feed. Understanding how forage crops respond to temperature is crucial for optimizing growth and nutritional value. Remote sensing technologies offer promising tools for monitoring plant health and predicting forage quality. As part of the project UPSCALE, this study examines the growth and spectral response of Northern and Southern cultivars under different temperature regimes. Two red clover (ʻGandalfʼ from Norway and ʻVytisʼ from Lithuania) and two timothy (ʻNorengʼ from Norway and ʻJauniaiʼ from Lithuania) cultivars were grown at controlled temperatures of 12, 15, and 18°C. A total of 168 pots (10L, ~30 plants per pot) were maintained in climate-controlled chambers at The Climate Laboratory, UiT, Tromsø. Plant growth was monitored using the PlantEye F600, providing 3D models, biomass, height, leaf area index, and stress indices (NDVI, NPCI, PSRI). Destructive sampling was conducted at three stages: pre-flowering, post-flowering, and at the end of the experiment. Leaves were scanned using Specim FX10e (VNIR) and FX17e (SWIR) hyperspectral cameras before drying for chemical analysis. Results showed distinct growth differences among the cultivars. Clovers increased in height and biomass with rising temperatures, though ʻGandalfʼ consistently yielded less biomass. Timothy ʻJauniaiʼ followed a similar trend to the clovers, while cultivar ʻNorengʼ had optimal growth at 15°C. Spectral indices did not reveal significant contrasts; ongoing hyperspectral analysis may provide further insights. The upcoming chemical analysis will integrate with hyperspectral data to identify lignin signatures for assessing forage digestibility. These findings contribute to a deeper understanding of how forage crops respond to temperature variations, to select cultivars with optimal growth and digestibility in the face of climate change.
Forfattere
Thomas Georges A Bawin Marte Marie Fossum Ranvik Sigridur Dalmannsdottir Egle Norkeviciene Rita Armonienė Erik Alexandersson Laura Elina JaakolaSammendrag
Det er ikke registrert sammendrag
Forfattere
Thomas Georges A Bawin Laura Elina Jaakola Katja Hannele KarppinenSammendrag
Det er ikke registrert sammendrag
Forfattere
Thomas Georges A Bawin Marius Dobbe Klemetsen Marte Marie Fossum Ranvik Marcus Andersen Wojciech Leoniuck Sergey Khorobrykh Otso Turunen Kristian Salo Taina Tyystjärvi Esa Tyystjärvi Laura Elina JaakolaSammendrag
Indoor plant production in greenhouses and vertical farms is essential in Nordic countries because the climate does not permit field cultivation of several important species. This project aims to improve illumination methods and nutrient recirculation to better support local cultivation near consumers, with lettuce, baby spinach, and woodland strawberry as target crops. Pulsed LED illumination and spectral optimization of background light, accounting for the photosystem properties of the tested species to maximize photosynthetic activity, are being investigated under controlled conditions. Extensive phenotyping of plants is being carried out using multispectral (PlantEye F600, Phenospex) and hyperspectral (Specim FX series, 400-1700 nm) imaging technologies to monitor their growth, health status, and molecular properties such as chlorophyll a and b levels. Combined illumination and fertilization tests using cyanobacteria to recirculate nutrients from greenhouse wastewater will be conducted later in the project. These advancements will enable plant growth in urban areas near consumers, reducing transportation costs and the environmental footprint of agriculture.
Forfattere
Vahe Atoyan Simon Mikalsen Thomas Georges A Bawin Laura Elina Jaakola Anna AvetisyanSammendrag
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Sammendrag
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Forfattere
Kirsten TørresenSammendrag
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Forfattere
Kirsten TørresenSammendrag
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Sammendrag
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Sammendrag
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