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.
2018
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Michael Roleda Jorunn Skjermo Hélène Marfaing Rosa Jonsdottir Celine Rebours Anna Gietl Dagmar B. Stengel Udo NitschkeAbstract
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In this paper, we examine citizen and consumer attitudes towards, and preferences for, private and public goods from organic agriculture in Norway. The study is based on a survey among 939 Norwegians. The results show that in the role as citizens, the respondents hold a moderate belief in the superiority of organic farming concerning the production of public goods, but they give relatively low priority to prompting organic farming compared to other agricultural policy goals. In the role as consumers (choice experiment), the respondents were willing to pay for several attributes of organic food. Only 6% of the respondents buy organic food as often as they can. The most important reasons for buying organic food are health and environmental concerns, while animal welfare has little importance. Lack of perceived superiority regarding health benefits, taste, safety and environment are important reasons for not consuming (more) organic food among those who rarely or never buy organic food.
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Frode VeggelandAbstract
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Based on soil temperature, snow depth and the grown cultivar's maximum attainable level of frost tolerance (LT50c), the FROSTOL model simulates development of frost tolerance (LT50) and winter damage, thereby enabling risk calculations for winter wheat survival. To explore the accuracy of this model, four winter wheat cultivars were sown in a field experiment in Uppsala, Sweden in 2013 and 2014. The LT50 was determined by tests of frost tolerance in November, and the cultivars’ LT50c was estimated. Further, recorded winter survival from 20 winter wheat field variety trials in Sweden and Norway was collected from two winter seasons with substantial winter damages. FROSTOL simulations were run for selected cultivars at each location. According to percentage of winter damage, the cultivar survival was classified as “survived,” “intermediate” or “killed.” Mean correspondence between recorded and simulated class of winter survival was 75% and 37% for the locations in Sweden and Norway, respectively. Stress factors that were not accounted for in FROSTOL might explain the poorer accuracy at the Norwegian locations. The accuracy was poorest for cultivars with intermediate LT50c levels. When low temperature was the main cause of damage, as at the Swedish locations, the model accuracy was satisfying.
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No abstract has been registered