Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2024
Sammendrag
No abstract has been registered
Redaktører
Camilla BaumannSammendrag
Here you will find 40 articles from the past year, providing a glimpse into the vast array of professional activities at NIBIO. These articles can be considered as samples from our extensive portfolio, which includes around 1500 ongoing projects across our five specialised divisions.
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
Marte Ragnhild Owren Ingvild Byskov Britta Maria Hoem Julien Jabot Hans H. Kolshus Kathrine Loe Bjønness Jakob Sandven Trude Melby Bothner Mona Irene Andersen Engedal Eirik Knutsen Lene Skyrudsmoen Berit Storbråten Kristina Vikesund Hart Evan Christian Wilhelm Mohr Gry Alfredsen Ana Aza Johannes Breidenbach Lise Dalsgaard Rune Eriksen Katharina Hobrak Christophe Moni Gunnhild SøgaardRedaktører
Ingeborg RønningSammendrag
No abstract has been registered
Forfattere
Mirjana SadojevicSammendrag
Environmental control of growth and flowering is generally well understood in raspberries, but a complete understanding of the processes is missing in blackberries. To get a better understanding of growth and flowering in blackberries, five cultivars, ‘Loch Ness’, ‘Loch Tay’, ‘Natchez’, ‘Ouachita’, and ‘Sweet Royalla’, were studied in the phytotron at 16°C and 12, 13, 14 and 15h photoperiod, and under natural temperature and daylength conditions at Apelsvoll, Norway (60.7° N). The results demonstrate that origin and genetic background of cultivars play a crucial role in how they respond to environmental signals. ‘Natchez’ had a critical photoperiod of 14h for cessation of growth at 16°C, while ‘Loch Ness’ continued to grow independently of photoperiod treatment. Photoperiod in the 12-15h range was not critical for flower bud initiation in ‘Natchez’ and ‘Loch Ness’. All five cultivars initiated flower buds before cessation of growth under out-door conditions. In both experiments, the cultivars that reached growth cessation first, also had the most advanced flower buds, except for ‘Ouachita’. Flower bud initiation in ‘Loch Ness’ and ‘Natchez’ began in the mid-section of the cane and continued in both basipetal and acropetal directions. Three ‘Loch Ness’ plants from each photoperiod treatment were forced in the greenhouse after sufficient chilling to examine the flowering performance of the buds that were initiated before growth cessation. Plants at 15h photoperiod, had the highest percentage of flowering nodes, most flowers per plant and fewest days to anthesis at forcing, but all plants from all treatments developed flowers. The position of the flowering nodes along the cane corresponded to the position of the initiated flower buds dissected in ‘Loch Ness’ prior to chilling. The results suggest that temperature, rather than photoperiod, may be the main factor affecting both growth cessation and flower bud initiation in blackberries.
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.
Sammendrag
Introduction: Plantations located outside the species distribution area represent natural experiments to assess tree tolerance to climate variability. Climate change amplifies warming-related drought stress but also leads to more climate extremes. Methods: We studied plantations of the European larch (Larix decidua), a conifer native to central and eastern Europe, in northern Spain. We used climate, drought and tree-ring data from four larch plantations including wet (Valgañón, site V; Santurde, site S), intermediate (Ribavellosa, site R) and dry (Santa Marina, site M) sites. We aimed to benchmark the larch tolerance to climate and drought stress by analysing the relationships between radial growth increment (hereafter growth), climate data (temperature, precipitation, radiation) and a drought index. Results: Basal area increment (BAI) was the lowest in the driest site M (5.2 cm2 yr-1; period 1988–2022), followed by site R (7.5 cm2 yr-1), with the youngest and oldest and trees being planted in M (35 years) and R (150 years) sites. BAI peaked in the wettest sites (V; 10.4 cm2 yr-1; S, 10.8 cm2 yr-1). We detected a sharp BAI reduction (30% of the regional mean) in 2001 when springto-summer conditions were very dry. In the wettest V and S sites, larch growth positively responded to current March and June-July radiation, but negatively to March precipitation. In the R site, high April precipitation enhanced growth. In the driest M site, warm conditions in the late prior winter and current spring improved growth, but warm-sunny conditions in July and dry-sunny conditions in August reduced it. Larch growth positively responded to spring-summer wet conditions considering short (1-6 months) and long (9-24 months) time scales in dry (site M) and wet-intermediate (sites S and R) sites, respectively. Discussion: Larch growth is vulnerable to drought stress in dry slow-growing plantations, but also to extreme spring wet-cloudy events followed by dry-hot conditions in wet fast-growing plantations.
Forfattere
Ralf Rautenberger Alexandre Detain Kari Skjånes Peter Simon Claus Schulze Viswanath Kiron Daniela Morales-SánchezSammendrag
No abstract has been registered
Sammendrag
No abstract has been registered
Sammendrag
DUO link: http://hdl.handle.net/10852/111489