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
Eivind Vangdal Sigrid Flatland Ingvild MehlSammendrag
Foliar applications of fertilizers are an important part of standard fertilization programmes in apples to optimize the content of nutrients important to growth and fruit quality. In an experiment in plums (Prunus domestia L.) a foliar fertilization programme was compared to traditional application of fertilizers on the soil. In another experiment extra magnesium, potassium and the combination of both magnesium and potassium were compared to control trees given a standard foliar fertilization programme. Yield and fruit size was registered. Analyses included fruit quality factors, content of major nutrients in fruits and leaves as well as storability. The effects of the different programmes on yield, fruit size and most fruit quality factors were not significant. Fruits from trees given foliar fertilizers had, however, higher content of nitrogen and significantly lower contents of the other major nutrients. The application of extra potassium and magnesium did not increase the level of these elements, but a significant reduction in the Ca-content was observed. Accordingly a higher K:Ca-ratio was observed in potassium and magnesium sprayed fruits. Even though no differences in fruit firmness were observed between the treatments at harvest, after two weeks of storage the plums from potassium sprayed trees were significantly softer than the controls.
Forfattere
Oskar PuschmannSammendrag
Det er ikke registrert sammendrag
Forfattere
Ievina SturiteSammendrag
Det er ikke registrert sammendrag
Forfattere
Tor LunnanSammendrag
Free-range grazing on mountain pastures is common practice for sheep and cattle farming in southern Norway. Investigations have shown that animal growth and milk production decrease towards the end of the grazing period. This has been explained by the decrease in forage quality and quantity. In two seasons, three grass species and Carex spp. were sampled at four locations early or late in the summer. Forage quality was determined by NIRS with a broad calibration for grasses. The energy value was highest in Agrostis capillaris and Avenella flexuosa, followed by Deschampsia cespitosa and Carex spp. The energy value decreased through the season; however, A. flexuosa kept a high energy value even in early autumn. The protein value declined steadily through the grazing season. Avenella flexuosa was lower in protein than the other species, especially early in the season. This investigation indicates that the decline in energy value is not the main reason for declining animal response at the end of the grazing season. Factors such as low forage intake and low content of protein might be more important. Keywords: quality, grazing, Avenella flexuosa, Deschampsia cespitosa, Agrostis capillaris, Carex
Forfattere
Tommy Staahl Gabrielsen Ivar PettersenSammendrag
Det er ikke registrert sammendrag
Forfattere
Kirsten Tørresen Jan Netland Lars Olav Brandsæter Ingerd Skow Hofgaard Oleif Elen Andrea Ficke Guro Brodal Ole Martin Eklo Marit Almvik Randi Bolli Marianne Stenrød Einar StrandSammendrag
Det er ikke registrert sammendrag
Forfattere
Pia Heltoft Jensen Lisa Munk Ghita Cordsen NielsenSammendrag
There are no reliable forecasting models available for Sclerotinia stem rot in Denmark today.The German forecasting model SkleroPro was evaluated in Danish field trials in 2007-2009and was evaluated with historical data from 1998 to 2006. Other forecasting models forSclerotinia stem rot were also evaluated, but unfortunately none of them have proven to beuseful in practice under Danish conditions. A survey answered by Danish oilseed growersshowed, that there is a need for a forecasting model in Denmark because they often make aroutine spraying. Their expectation to a forecasting model is that it should give minimum 70percent correct predictions before they will use it.
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Audun Helge Nerland Åshild Kristine Andreassen Per Brandtzæg Merethe Aasmo Finne Askild Lorentz Holck Juho Junttila Heidi Sjursen Konestabo Richard Meadow Arne Mikalsen Kaare Magne Nielsen Hilde-Gunn Opsahl Sorteberg Rose VikseSammendrag
Det er ikke registrert sammendrag
Forfattere
Audun Helge Nerland Per Brandtzæg Merethe Aasmo Finne Askild Lorentz Holck Juho Junttila Heidi Sjursen Konestabo Richard Meadow Arne Mikalsen Kaare Magne Nielsen Hilde-Gunn Opsahl Sorteberg Monica Sanden Åshild Kristine Andreassen Rose VikseSammendrag
Det er ikke registrert sammendrag