Abstract
After harvest 2018 new spring barley malting varieties Cosmopolitan, Ismena, Klarinette, Laureate, LG Aurus, and Runner were registered in the Czech Republic. The spring barley varieties were rich in extract. The varieties Cosmopolitan, Laureate, and LG Aurus had more than 83 % of extract. The values of Kolbach index, diastatic power and apparent final attenuation were at the above average to optimal level in the studied varieties of spring barley. The level of cytolytic modification was at above average to optimal level with the exception of the variety Runner which exhibited higher β-glucan content in wort (192 mg/l). In addition, non-malting varieties of winter six-row varieties Azrah, Impala, Journey, SU Jule, and hybrid variety SU Hylona were registered.
Highlights
2 Material and MethodsIn the Czech Republic, new barley varieties are registered under Act 219/2003 on the basis of a three-year testing, which is carried out according to the Methodology of Barley Utility Value Testing (Dvořáčková, 2016)
The present study evaluates the technological and agronomic quality of the spring barley malting varieties Cosmopolitan, Ismena, Klarinette, Laureate, LG Aurus, and Runner, which completed the trials for the registration in 2018
The study presents the results achieved by six varieties of spring barley which were registered in the Czech Republic after the 2018 harvest
Summary
In the Czech Republic, new barley varieties are registered under Act 219/2003 on the basis of a three-year testing, which is carried out according to the Methodology of Barley Utility Value Testing (Dvořáčková, 2016). The tests for the registration of new varieties include monitoring the utility value, i.e. yield and other yield characteristics, resistance to diseases, lodging and traits characterizing malt quality. The quality of malt samples was evaluated on the basis of the characteristics given in the malting quality index (Psota and Kosař, 2002). The present study evaluates the technological and agronomic quality of the spring barley malting varieties Cosmopolitan, Ismena, Klarinette, Laureate, LG Aurus, and Runner, which completed the trials for the registration in 2018. The utility value of the non-malting varieties is given only in the table without verbal description. Malting quality of the studied spring barley varieties was assessed based on the analysis of 12 malt samples made in the micromalting plant. In the set of the varieties under study, none met the criteria for recommendation and production of the beer with the protected geographical indication “České pivo” (European Commission, 2008)
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