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
Sammendrag
Det er ikke registrert sammendrag
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
Lars NesheimSammendrag
Farm manures are a major source of nitrogen and phosphorus pollution. Excreta from livestock make a significant contribution to atmospheric ammonia emissions and losses of N and P from agricultural land. In order to reduce nutrient emissions from agriculture, it is important to have reliable N and P output standards for the major categories of farm livestock. In Norway the output standards of livestock excreta have not been updated the last 15 years, and the scientific basis for the figures is even older (about 30 years). During that time there have been considerable changes in the Norwegian agricultural production, e.g. the annual milk yield per cow has increased from about 5 500 kg to 7 200 kg. In a report to Norwegian Agricultural Authority the Norwegian Institute for Agricultural and Environmental Research has presented the prevailing Norwegian output standards and the investigations which these standards are based upon (Nesheim et al., 2011). Also output standards from Denmark, Great Britain, Sweden and Switzerland are presented and discussed.
Forfattere
Lars NesheimSammendrag
Husdyrgjødsel er ein viktig ressurs, særleg i husdyrfylket Nord-Trøndelag. Ved god utnytting av næringsstoffa, kan gardbrukarane spare pengar ved mindre innkjøp av handelsgjødsel. Rett bruk av gjødsla kan også minske belastninga på miljøet.
Forfattere
Arne HermansenSammendrag
Det er ikke registrert sammendrag
Forfattere
Arne HermansenSammendrag
Det er ikke registrert sammendrag
Forfattere
Arne HermansenSammendrag
Det er ikke registrert sammendrag
Forfattere
Arne HermansenSammendrag
Det er ikke registrert sammendrag
Forfattere
Arne HermansenSammendrag
Det er ikke registrert sammendrag
Forfattere
Arne HermansenSammendrag
Det er ikke registrert sammendrag