Browsing NIBIO Brage by Author "Torp, Torfinn"
Now showing items 1-20 of 20
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Allelopathic Potential of Teff Varieties and Effect on Weed Growth
Gebrehiwot, Haftamu Gebretsadik; Aune, Jens Bernt; Eklo, Ole Martin; Torp, Torfinn; Brandsæter, Lars Olav (Peer reviewed; Journal article, 2020-06-16)Allelopathic potential of 10 teff varieties was assessed in laboratory experimentation (conducted in NIBIO, Norway), and determined with an agar-based bioassay using ryegrass and radish as model weeds. Field experiments ... -
Avling og avlingskvalitet i økologisk dyrka gras-raudkløvereng - samla analyse av eldre forsøksdata
Steinshamn, Håvard; Adler, Steffen Andreas; Frøseth, Randi Berland; Lunnan, Tor; Torp, Torfinn; Bakken, Anne Kjersti (Bioforsk FOKUS;, Research report, 2014)Det er behov for å vite kva ein kan vente seg av avling og avlingskvalitet i økologisk dyrka eng til bruk i taktisk og strategisk planlegging av økologisk mjølkeprodukjson. Formålet med dette arbeidet var å utnytte ... -
Dehydrin, alcohol dehydrogenase, and central metabolite levels are associated with cold tolerance in diploid strawberry (Fragaria spp.)
Davik, Jahn Eldar; Koehler, Gage; From, Britta; Torp, Torfinn; Rohloff, Jens; Eidem, Petter; Wilson, Robert; Sønsteby, Anita; Randall, Stephen K,; Alsheikh-Yousef, Muath (Journal article; Peer reviewed, 2013-09-27)The use of artificial freezing tests, identification of biomarkers linked to or directly involved in the low-temperature tolerance processes, could prove useful in applied strawberry breeding. This study was conducted to ... -
DON content in oat grains in Norway related to weather conditions at different growth stages
Roer, Anne-Grete; Torp, Torfinn; Brodal, Guro; Aamot, Heidi; Strand, Einar; Nordskog, Berit; Dill-Macky, Ruth; Edwards, Simon G.; Hofgaard, Ingerd Skow (Journal article; Peer reviewed, 2016-12)High concentrations of the mycotoxin deoxynivalenol (DON), produced by Fusarium graminearum have occurred frequently in Norwegian oats recently. Early prediction of DON levels is important for farmers, authorities and the ... -
HT-2 and T-2 toxins in Norwegian oat grains related to weather conditions at different growth stages
Hjelkrem, Anne-Grete Roer; Aamot, Heidi Udnes; Brodal, Guro; Strand, Einar; Torp, Torfinn; Edwards, Simon G.; Dill-Macky, Ruth; Hofgaard, Ingerd Skow (Journal article; Peer reviewed, 2018-01-08)High concentrations of the mycotoxins HT-2 and T-2 (HT2 + T2), primarily produced by Fusarium langsethiae, have occasionally been detected in Norwegian oat grains. In this study, we identified weather variables influencing ... -
Impact of waterlogging and temperature on autumn growth, hardening and freezing tolerance of timothy (Phleum pratense)
Jørgensen, Marit; Torp, Torfinn; Mølmann, Jørgen (Journal article; Peer reviewed, 2019-12-10)Precipitation has generally increased in Norway during the last century, and climate projections indicate a further increase. The growing season has also become longer with higher temperatures, particularly in autumn. ... -
Influence of Baltic Agro-Environmental Conditions on Yield and Quality of Fava Bean Crops in Conventional Systems
Lepse, Liga; Vågen, Ingunn Molund; Zeipina, Solvita; Torp, Torfinn; Olle, Margit; Rosa, Eduardo; Dominguez-Perles, Raul (Peer reviewed; Journal article, 2021-10-23)Fava bean (Vicia faba L.) yields are featured by high variability, influenced by the agro-environmental conditions during the growing seasons. These legume crops are sensitive to hydric and heat stresses. The adaptation ... -
Interferometric SAR DEMs for Forest Change in Uganda 2000–2012
Solberg, Svein; May, Johannes; Bogren, Wiley Steven; Breidenbach, Johannes; Torp, Torfinn; Gizachew, Belachew (Journal article; Peer reviewed, 2018-02-02)Monitoring changes in forest height, biomass and carbon stock is important for understanding the drivers of forest change, clarifying the geography and magnitude of the fluxes of the global carbon budget and for providing ... -
Nedbørfeltovervåking som grunnlag for å forutsi transport av plantevernmidler. En analyse av mobile plantevernmidler fra Program for jord- og vannovervåking i landbruket (JOVA)
Stenrød, Marianne; Bøe, Frederik; Holten, Roger; Lang, Kathinka; Torp, Torfinn (NIBIO Rapport, Research report, 2023)Det nasjonale overvåkingsprogrammet JOVA (Program for jord- og vannovervåking i landbruket) overvåker nedbørfelt som er representative for de ulike jordbruksproduksjonene og –regionene i Norge og er valgt ut mht. klima, ... -
Opptak og translokering av insektmidlet imidakloprid i planteavfall til nektar og pollen i trekkplantene bringebær og solsikker – en mulig eksponeringsvei for pollinerende insekter
Eggen, Trine; Odenmarck, Sven R.; Torp, Torfinn (Bioforsk rapport;8(149) 2013, Research report, 2013)I forbindelse med godkjenning av plantevernmidler ønsker Mattilsynet mer kunnskap om pollinerende insekter kan bli eksponert for neonikotinoider i konsentrasjon som kan gi negative effekter. Imidakloprid som er ekstremt ... -
Phototactic response of Frankliniella occidentalis to sticky traps with blue light emitting diodes in herb and Alstroemeria greenhouses
Johansen, Nina S; Torp, Torfinn; Solhaug, Knut Asbjørn (Journal article; Peer reviewed, 2018-08-24)Blue and yellow sticky traps equipped with blue light emitting diodes (LEDs) were evaluated for their attractiveness to the western flower thrips (Frankliniella occidentalis Pergande) and compared to similar traps without ... -
Postharvest needle retention in Norway spruce Christmas trees
Pettersson, Martin; Talgø, Venche; Johnskås, Odd Ragnar; Skage, Jan-Ole; Torp, Torfinn; Fløistad, Inger (Peer reviewed; Journal article, 2020-07-22)Norway spruce (Picea abies) is a widely used Christmas tree species in the Nordic countries. Postharvest needle retention is an important characteristic for Christmas trees and compared to many fir (Abies) species, Norway ... -
Prevalence and parasite load of nematodes and trematodes in an invasive slug and its susceptibility to a slug parasitic nematode compared to native gastropods
Antzée-Hyllseth, Henrik; Trandem, Nina; Torp, Torfinn; Haukeland, Solveig (Peer reviewed; Journal article, 2020-04-09)The invasive slug Arion vulgaris (Gastropoda: Arionidae) is an agricultural pest and serious nuisance in gardens of Central and Northern Europe. To investigate if the success of A.vulgaris in Norway can be attributed to a ... -
Reviews and syntheses: Review of causes and sources of N2O emissions and NO3 leaching from organic arable crop rotations
Hansen, Sissel; Frøseth, Randi Berland; Stenberg, Maria; Stalenga, Jarosław; Olesen, Jørgen E.; Krauss, Maike; Radzikowski, Paweł; Doltra, Jordi; Nadeem, Shahid; Torp, Torfinn; Pappa, Valentini; Watson, Christine A. (Journal article; Peer reviewed, 2019-07-17)The emissions of nitrous oxide (N2O) and leaching of nitrate (NO3) from agricultural cropping systems have considerable negative impacts on climate and the environment. Although these environmental burdens are less per ... -
Sensor technology for precision weeding in cereals. Evaluation of a novel convolutional neural network to estimate weed cover, crop cover and soil cover in near-ground red-green-blue images
Berge, Therese W.; Torp, Torfinn; Urdal, Frode; Vallestad, Magnus (NIBIO Rapport, Research report, 2022)Precision weeding or site-specific weed management (SSWM) take into account the spatial distribution of weeds within fields to avoid unnecessary herbicide use or intensive soil disturbance (and hence energy consumption). ... -
Soil carbon under arable and mixed dairy cropping in a long-term trial in SE Norway
Riley, Hugh; Henriksen, Trond Maukon; Torp, Torfinn; Korsæth, Audun (Peer reviewed; Journal article, 2022-03-10)Soil organic carbon (SOC) was studied at 0–45 cm depth after 28 years of cropping with arable and mixed dairy rotations on a soil with an initial SOC level of 2.6% at 0–30 cm. Measurements included both carbon concentration ... -
The effect of weather conditions on the preference in horses for wearing blankets
Mejdell, Cecilie Marie; Jørgensen, Grete Helen Meisfjord; Buvik, Turid; Torp, Torfinn; Bøe, Knut Egil (Journal article; Peer reviewed, 2019-03)The use of blankets in horses is widespread in Northern Europe. However, horses are very adaptable to low temperatures and the practice is questioned because blankets may hamper heat dissipation at high temperatures and ... -
Weed-Competitive Ability of Teff (Eragrostis tef (Zucc.) Trotter) Varieties
Gebrehiwot, Haftamu Gebretsadik; Aune, Jens Bernt; Netland, Jan; Eklo, Ole Martin; Torp, Torfinn; Brandsæter, Lars Olav (Peer reviewed; Journal article, 2020-01-11)Teff is a staple and well adapted crop in Ethiopia. Weed competition and control have major effects on yields and economic returns of the crop in the country. Among the weed management methods, development and use of weed ... -
Yield and herbage quality from organic grass clover leys—a meta-analysis of Norwegian field trials
Steinshamn, Håvard; Adler, Steffen Andreas; Frøseth, Randi Berland; Lunnan, Tor; Torp, Torfinn; Bakken, Anne Kjersti (Journal article; Peer reviewed, 2016-12)A meta-analysis based on experiments in organically cultivated grasslands in Norway was conducted to quantify the effects of management factors on herbage yield and feed quality. A dataset was collected that included 496 ... -
Yield, nitrogen recovery efficiency and quality of vegetables grown with organic waste-derived fertilisers
Øvsthus, Ingunn; Seljåsen, Randi; Stockdale, Elizabeth; Uhlig, Christian; Torp, Torfinn; Breland, Tor Arvid (Journal article; Peer reviewed, 2017-09-30)More sustainable production of high-quality, nutritious food is of worldwide interest. Increasing nutrient recycling into food systems is a step in this direction. The objective of the present study was to determine nitrogen ...