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.
2009
Authors
Belachew Asalf Tadesse Arne Stensvand David M. Gadoury Robert C Seem Andrew Dobson Anne-Marte TronsmoAbstract
Development of ontogenic resistance to powdery mildew (Podosphaera aphanis) in strawberry fruit has not been quantified, and thus cannot be exploited in disease management programs. Four commercially-relevant strawberry cultivars were evaluated for ontogenic resistance to powdery mildew. Fruits were inoculated at one of the four growth stages: flowering, green, white and early pink fruit. There was a significant difference between and within cultivars at the bloom and green stage of inoculations (P <0.05) for both disease incidence and severity. On average 16.4, 39.5, 48.7, and 60.3 % of the fruits inoculated at bloom developed powdery mildew in cultivars Elan, Korona, Frida and Inga, respectively. None of the cultivars developed powdery mildew when inoculated at the pink stage. It may be concluded that flowers and green fruits of strawberry were much more susceptible to powdery mildew infection than white and pink fruits. The high susceptibility of cultivars at the flower and early green stages seemed coincident with the succulent nature of the fruits at these stages, making it easy for penetration and establishment of mildew. Control measures targeting at these critical windows of fruit susceptibility are likely to reduce yield loss.
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Authors
Daniel P. Rasse Karin Knoth de Zarruk Line Tau StrandAbstract
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Authors
Håkon BorchAbstract
This poster presents a new low cost model for modelleing phosphorus and soil loss from agriculture land, and to do evaluation of different mitigation scenarios where the cost effectiveness of the meassures influence each other. The model has been used in several Norwegian catchments to evaluate mitigation options, and to build packages of measures to comply with the demands from the European Water Framework Directive.
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Authors
Anthony D. Fox Sverre Kobro Aleksi Lehikoinen Peter Lyngs Risto A. VäisänenAbstract
No abstract has been registered