Environment and weather influence on quality and market value of hops
2012
Pavlovic, V., University of Maribor, Hoce (Slovenia). Faculty of Agriculture and Life Science | Pavlovic, M., University of Maribor, Hoce (Slovenia). Faculty of Agriculture and Life Science | Cerenak, A., Slovenian Inst. of Hop Research and Brewing, Zalec (Slovenia) | Kosir, I.J., Slovenian Inst. of Hop Research and Brewing, Zalec (Slovenia) | Ceh, B., Slovenian Inst. of Hop Research and Brewing, Zalec (Slovenia) | Rozman, C., University of Maribor, Hoce (Slovenia). Faculty of Agriculture and Life Science | Turk, J., University of Maribor, Hoce (Slovenia). Faculty of Agriculture and Life Science | Pazek, K., University of Maribor, Hoce (Slovenia). Faculty of Agriculture and Life Science | Krofta, K., Chmelarsky Inst., Zatec (Czech Republic) | Gregoric, G., Slovenian Environment Agency, Ljubljana (Slovenia)
This paper analyses the influence of weather on alpha-acid contents in hop (variety Super Styrian Aurora) in Slovenian production during 1994-2009. Through inspection of correlation coefficients, it tries to find specific times of the year when the weather conditions affect the alpha-acid content with a view to prediction in Slovenia. The most significant time periods of weather during the growing season are identified as attributes of temperatures calculated from the interval from 25th to 30th week (T2530, r = -0.88, P less than 0.01), as attributes of rainfall and sunshine from the interval from 25th to 29th week (R2529, r = 0.85, P less than 0.01 and S2529, r = -0.75, P less than 0.01) and attributes of relative humidity from the interval from 27th to 32nd week (RH2732, r = 0.71, P less than 0.01). The attribute T2530 represents the sum of active temperatures from June 18 to July 29 of that year. Similarly, the attribute R2529 corresponds to the rainfall (in mm or L/square m) that fell during the period from June 18 to July 22.
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