Abstract
In the hop-growing area of Spalt near Nuremberg, where hop is grown since the 15th century, hop yields are decreasing year by year. Yields dropped from about 32 q/ha in 1980 to 18 q/ha nowadays, without any external disease-symptoms to be seen at the hop plants.
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References
Otto, G. and H. Winkler (1985) Prognose von Nachbauschäden in Obstanlagen, Akademie der Landwirtschaftswissenschaften der DDR, 1–11
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© 1997 Kluwer Academic Publishers
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Ahrens, W. (1997). Causal Agents of Hop-Dying in Spalt. In: Dehne, HW., Adam, G., Diekmann, M., Frahm, J., Mauler-Machnik, A., van Halteren, P. (eds) Diagnosis and Identification of Plant Pathogens. Developments in Plant Pathology, vol 11. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0043-1_60
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DOI: https://doi.org/10.1007/978-94-009-0043-1_60
Publisher Name: Springer, Dordrecht
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