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.
2011
Forfattere
Anne Kjersti Bakken Oddbjørn Kval-EngstadSammendrag
Kor raskt kvaliteten fell i gjenvekst av timoteidominert eng er avhengig av haustetida for førsteslåtten.
Sammendrag
Low soil temperatures limit nutrient uptake with negative consequences for growth and foliage quality. A better understanding of the temperature sensitivity of root N uptake is required to improve the best management practices for fertilization of conifers. Uptake of 15N in saplings of Abies lasiocarpa (Hook) Nutt and Abies nordmanniana (Steven) Spach was studied at root temperatures of 3 - 15°C in hydroponics. 15N accumulation in shoots increased with temperature, showing accelerated accumulation from 7°C upward. At 3°C, uptake rates were low for both species. Between 7 and 12°C, 15N accumulation in shoots increased by a factor of 5 in A. lasiocarpa and by a factor of 3 in A. nordmanniana. The temperature response of N uptake was similar to root growth responses to temperature documented by previous studies. The results have implications for early season fertilization, where fertilization of both species should be withheld until soil temperatures reach 10 -12°C.
Forfattere
Dawit Solomon Johannes Lehmann Katrin Knoth de Zarruk Julia Dathe James Kinyangi Biqing Liang Stephen MachadoSammendrag
Det er ikke registrert sammendrag
Forfattere
Vibeke LindSammendrag
Norwegian lamb meat production is mainly based on free grazing in mountainous pastures during the summer. Prior to slaughter in the autumn, some lambs not big enough for slaughter are finished on e.g. cultivated pastures. This study looked at the feed quality of different forages, and the effect on lamb meat quality. Lambs grazed on mountain pastures at Kvaløya in Northern Norway (69°N) and Sør-Fron in Mid Norway (58°N) in 2007, and a subgroup at each location was finished on cultivated pastures for 6 weeks prior to slaughter in September. The fiber content was significantly higher in the cultivated pasture in Mid Norway compared to the mountain pasture while no differences between pastures in Northern Norway were found. In Mid Norway the content of polyunsaturated fatty acid (18:3) was significantly higher in meat from lambs grazing the mountain pasture compared to lamb grazing the cultivated pasture. For Northern Norway, the opposite pattern was observed. The higher 18:3 content may be attributable to lower fiber content at the mountain pasture. In our study, there appears to be an effect of fiber content on the fatty acid composition in lamb meat.
Sammendrag
Norwegian lamb meat production is mainly based on free grazing in mountainous pastures during the summer. Prior to slaughter in the autumn, some lambs not big enough for slaughter are finished on e.g. cultivated pastures. This study looked at the feed quality of different forages, and the effect on lamb meat quality. Lambs grazed on mountain pastures at Kvaløya in Northern Norway (69°N) and Sør-Fron in Mid Norway (58°N) in 2007, and a subgroup at each location was finished on cultivated pastures for 6 weeks prior to slaughter in September. The fiber content was significantly higher in the cultivated pasture in Mid Norway compared to the mountain pasture while no differences between pastures in Northern Norway were found. In Mid Norway the content of polyunsaturated fatty acid (18:3) was significantly higher in meat from lambs grazing the mountain pasture compared to lamb grazing the cultivated pasture. For Northern Norway, the opposite pattern was observed. The higher 18:3 content may be attributable to lower fiber content at the mountain pasture. In our study, there appears to be an effect of fiber content on the fatty acid composition in lamb meat.
Forfattere
Alhaji JengSammendrag
In light of the problems with the major sources and availability of energy in Malawi, new initiatives are being developed aimed at improving the status quo. One of the initiatives is the production of biofuels from several potential crops which include Jatropha curcas, Moringa oleifera and Castor plant (Ricinus communis). Several local and international companies have embarked on contract farming projects with rural farmers to produce the biofuel crops in the country. However, the agronomic practices of these crops are not well documented in the current agricultural extension manual. As a result, farmers rely on traditional knowledge and basic advice from extension workers. Due to this, there are fears that only poor quality and quantity of the biofuel crop yields will be available to meet the commercial demands for biofuel production. This manual is prepared to address the agronomic aspects of three of the high potential biofuel crops in Malawi covered in three chapters: Jatropha curcas, Moringa oleifera and Castor plant (Ricinus communis).
Forfattere
Bjørn FrantzenSammendrag
A talk of 55 slides that presents bird tourism as such and a brid tourism project in Finnmark, Norway specifically.
Forfattere
Bjørn FrantzenSammendrag
A serie of 30 slides from Svalbard, the Pechora Sea and Novaya Zemlja presenting scientifical industrial and governmental activities of today.
Forfattere
Bjørn FrantzenSammendrag
7 pictures of Arctic landscapes.
Sammendrag
Det er ikke registrert sammendrag