scholarly journals EBC Testing of the Spring Barley Varieties in the Czech Republic in 1994-1996.

1997 ◽  
Vol 43 (12) ◽  
pp. 340-341
Author(s):  
V. PSOTA ◽  
K. KOSAŘ
Keyword(s):  
Czech Republic ◽  
Spring Barley ◽  
The Czech Republic

Potential of water balance and remote sensing-based evapotranspiration models to predict yields of spring barley and winter wheat in the Czech Republic

2021 ◽  
Vol 256 ◽  
pp. 107064
Author(s):  
František Jurečka ◽  
Milan Fischer ◽  
Petr Hlavinka ◽  
Jan Balek ◽  
Daniela Semerádová ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Czech Republic ◽  
Water Balance ◽  
Winter Wheat ◽  
Spring Barley ◽  
The Czech Republic

scholarly journals Virulence frequencies to powdery mildew resistance genes of winter barley cultivars

2010 ◽  
Vol 40 (No. 4) ◽  
pp. 135-140 ◽  
Author(s):  
A. Dreiseitl
Keyword(s):  
Czech Republic ◽  
Powdery Mildew ◽  
Resistance Genes ◽  
Powdery Mildew Resistance ◽  
Spring Barley ◽  
Winter Barley ◽  
The Czech Republic ◽  
Mildew Resistance ◽  
Barley Cultivars ◽  
Random Samples

The virulence frequencies to powdery mildew resistance genes possessed by winter barley cultivars registered and newly tested in the Czech Republic were studied in 2000, 2002 and 2004. Random samples of the populations originating from winter and spring barley fields were obtained from the air by a mobile version of a jet spore sampler mounted on a car roof. Conidia were sampled by driving across the Czech Republic. Fourteen differentials, carrying 18 out of 20 currently identified resistance genes present in winter barley cultivars, were used. High virulence frequencies (85–100%) to most resistance genes were found. Lower virulence frequencies (14.1–40.1%) were found to only three resistance genes that have not been described yet; their preliminary designations are Ml(Va), Ml(Dt) and Ml(Ca). The importance of resistance of winter barley cultivars is discussed with respect to limiting the speed with which the pathogen adapts to genetic resistances possessed by commercial cultivars of both winter and spring barley, and to the necessity of lowering the costs for powdery mildew control in barley.

scholarly journals Mycoflora of the spring barley grains especially Fusarium spp.

2007 ◽  
Vol 55 (1) ◽  
pp. 165-172
Author(s):  
Ivana Šafránková ◽  
Jaroslava Marková ◽  
Karel Vejražka ◽  
Jana Hübschová ◽  
Jaroslava Ehrenbergerová ◽  
...  
Keyword(s):  
Czech Republic ◽  
Spring Barley ◽  
Malting Barley ◽  
Fusarium Spp ◽  
The Czech Republic ◽  
Genus Fusarium ◽  
Frequent Species ◽  
Significant Difference ◽  
Barley Grains

Infestation of the barley grains by pathogens (fungi of the genus Fusarium) was studied on malting barley from Kroměříž and Žabčice in the Czech Republic. Most frequent species in year 2005 was: Alternaria, Cladosporium and Fusarium. Most frequent species of Fusarium were F. culmorum, F. graminearum and F. avenaceum. A statistically significant difference was discovered when we compared the number of fusarium-attacked ears of the untreated variants of both localities (higher attack in Žabčice).

scholarly journals Calibration and Validation of the Crop Growth Model DAISY for Spring Barley in the Czech Republic

2015 ◽  
Vol 63 (4) ◽  
pp. 1177-1186 ◽  
Author(s):  
Eva Pohanková ◽  
Petr Hlavinka ◽  
Jozef Takáč ◽  
Zdeněk Žalud ◽  
Miroslav Trnka
Keyword(s):  
Czech Republic ◽  
Field Experiment ◽  
Growth Model ◽  
Spring Barley ◽  
Crop Growth ◽  
Research Centre ◽  
Mean Bias Error ◽  
Crop Growth Model ◽  
The Czech Republic ◽  
Calibration And Validation

In this paper, the crop growth model DAISY for spring barley (cultivar “Tolar“) was calibrated and subsequently validated in three different soil-climate locations in the Czech Republic – Lednice (48°48'51'' N, 16°48'46'' E, altitude 180 m), Věrovany (49°27'39'' N, 17°17'42'' E, altitude 210 m) and Domanínek (49°31'42'' N, 16°14'13'' E, altitude 560 m). The calibration and validation were based on data from a multi-year field experiment from the Central Institute for Supervising and Testing in Agriculture and from a two-year field experiment in Domanínek (2011 and 2012) that was conducted by the Institute of Agrosystems and Bioclimatology in cooperation with the Global Change Research Centre AS CR. The calibration for Lednice, Věrovany and Domanínek was performed using 4 growth seasons from each station, the subsequent validation for Lednice and Věrovany was performed based on 3 growth seasons from each station, and that for Domanínek was based on 6 growth seasons. The value of the RMSE (root mean square error) statistic for flowering was 2 days for calibration and 4 days for validation on average; for maturity, the RMSE was 11 days for both calibration and validation. The average RMSE for the yields was 0.9 t·ha−1 for calibration and 1.6 t·ha−1 for validation. According to the statistical index MBE (mean bias error) for the flowering phenological phase, the crop growth model DAISY showed a delay of 2 days in both calibration and validation. There was also delay of 6 days in calibration and of 8 days in validation for maturity. According to the MBE, the crop growth model DAISY underestimates the yield by 0.2 t·ha−1 for calibration and underestimates the yield by 0.4 t·ha−1 for validation.

scholarly journals Barley varieties registered in the Czech Republic after harvest 2018

2019 ◽  
Vol 65 (3) ◽  
Author(s):  
Vratislav Psota ◽  
Olga Dvořáčková ◽  
Milan Nečas ◽  
Markéta Musilová
Keyword(s):  
Czech Republic ◽  
Spring Barley ◽  
Optimal Level ◽  
The Czech Republic ◽  
Diastatic Power ◽  
Hybrid Variety

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.

scholarly journals Occurrence of Fusarium spp. on Malting Barley Grains in the Czech Republic During 2011–2013

2016 ◽  
Vol 64 (5) ◽  
pp. 1441-1451 ◽  
Author(s):  
Kristýna Bezděková ◽  
Ivana Šafránková ◽  
Jana Víchová
Keyword(s):  
Czech Republic ◽  
Spring Barley ◽  
Frequency Of Occurrence ◽  
Malting Barley ◽  
Fusarium Spp ◽  
The Czech Republic ◽  
Fungicide Treatment ◽  
Naturally Occurring ◽  
Barley Grains ◽  
Isolated Species

During 2011–2013, the frequency of occurrence and species spectrum ofFusariumfungi occurring on grains of five malting varieties of spring barley (Aksamit, Bojos, Malz, Radegast, and Kangoo) were monitored at two locations (Kroměříž and Žabčice, Czech Republic). The effect of three fungicide treatment variants onFusariumspecies suppression was also evaluated. During the monitored period, five species were detected:F. poae,F. culmorum,F. graminearum,F. avenaceum, andF. tricinctum. The most frequently isolated species wasF. poae.Radegast had the highest frequency of naturally occurringFusariumfungi, while Kangoo was the least infected variety at both locations. The greatest fungicide effectiveness againstFusariumspp. occurrence on ears was recorded after the variant with application of Hutton at BBCH 39 and Prosaro 250 EC at BBCH 65. During the monitored years, Žabčice had a higher rate of infection byFusariumfungi. The rates of barley infection byFusariumpathogens differed among individual years, with the highest rate occurring in 2011 (16–17 %) and the lowest rate in 2012 (1–2 %).

scholarly journals Agricultural drought and spring barley yields in the Czech Republic

2008 ◽  
Vol 53 (No. 7) ◽  
pp. 306-316 ◽  
Author(s):  
M. Trnka ◽  
P. Hlavinka ◽  
D. Semerádová ◽  
M. Dubrovský ◽  
Z. Žalud ◽  
...  
Keyword(s):  
Czech Republic ◽  
Data Analysis ◽  
Spring Barley ◽  
Meteorological Drought ◽  
The Other ◽  
Agricultural Drought ◽  
Threshold Values ◽  
The Czech Republic ◽  
Southern Moravia ◽  
The Relationship

The relationship between detrended district yields of spring barley (1961&minus;2000) and meteorological drought was assessed by Palmer Z-index. We found that the seasonal water balance (April&minus;June) significantly (<i>P</i> = 0.05) influences the spring barley production in 51 out of 62 evaluated districts. Coefficients of correlation varied in individual districts from 0.19 to 0.70, with the highest values being found in southern Moravia. Data analysis revealed the presence of six distinct groups of districts with a specific drought-yield relationship. The most drought-sensitive cluster included five districts in the South East of the country. On the other hand, the districts in Northern Moravia and Silesia belong among the least sensitive to agricultural drought. The study also defined threshold values of seasonal drought (sums of relative Palmer Z-index lower than &minus;8 and &minus;10, respectively), below which medium to severe spring barley yield reductions are very likely, regardless of the district of occurrence.

scholarly journals Changes in the population of Blumeria graminis f.sp. hordei in the Czech Republic from 2009 to 2010

2012 ◽  
Vol 47 (No. 2) ◽  
pp. 43-51 ◽  
Author(s):  
A. Dreiseitl
Keyword(s):  
Czech Republic ◽  
Powdery Mildew ◽  
Spring Barley ◽  
Blumeria Graminis ◽  
The Czech Republic ◽  
Barley Cultivars ◽  
Wide Range ◽  
Pathogen Populations

Virulences to powdery mildew resistances in barley cultivars mostly carrying unknown resistances were determined in 2009 and 2010. Random spore samples of the airborne pathogen populations originating from winter and spring barley fields were obtained by means of a mobile version of a jet spore sampler by travelling across theCzech Republic. In total 301 isolates were studied, 55 differentials carrying mostly unknown resistances were used and 80 pathotypes were found, of which 26 representing 73.1% of isolates were detected in both years. Virulence frequencies showed a wide range from 0% to 100%. Complexity of the 2010 population slightly increased, mostly due to increasing frequencies of virulence to new resistances, whereas the complexity of virulences to resistances in most other differentials decreased. Pathotype 00027 was the most abundant (10.0%). Diversity of the 2010 population&nbsp; considerably increased due to changes in virulence frequencies.

scholarly journals Barley varieties registered in the Czech Republic after the harvest of 2020

2021 ◽  
Vol 67 (3) ◽  
pp. Print
Author(s):  
Vratislav Psota ◽  
Olga Dvořáčková ◽  
Markéta Musilová ◽  
Milan Nečas
Keyword(s):  
Czech Republic ◽  
Cell Walls ◽  
Spring Barley ◽  
Optimal Level ◽  
Malting Quality ◽  
Geographical Indication ◽  
The Czech Republic ◽  
Extract Content ◽  
Nitrogenous Substances ◽  
The Given

The study presents malting quality and agronomic characteristics obtained during testing of barley varieties in the Czech Republic. After the  harvest of 2020, the following spring barley malting varieties were registered: Amidala, Focus, Greenway, KWS Jessie, LG Belcanto, and LG Stamgast. LG Stamgast was recommended for production of the beer with the protected geographical indication České pivo. In addition, the non-malting spring barley variety RGT Gagarin was registered. Amidala, Focus, Greenway, KWS Jessie, LG Belcanto provided malt with the extract content over 83%. These varieties also easily degraded nitrogenous substances. The value of the Kolbach index ranged from 48.6 to 52.1%. Diastatic power was at the optimal level. Degradation of cell walls was also optimal. Friability moved from 89 to 97% and β-glucan content in wort achieved satisfactory values of 65 – 170 mg/l in the given varieties . Wort quality, which is characterized by final attenuation, was at the above average to optimal level of 80.9 – 83.2% in these varieties of spring barley. LG Stamgast showed lower values of proteolytic and cytolytic modification and lower values of final attenuation, which is required for the varieties recommended for the production of the beer with the protected geographical indication České pivo.

scholarly journals New permitted spring barley varieties in the Czech Republic..

1996 ◽  
Vol 42 (6) ◽  
pp. 206-209
Author(s):  
K. KOSAŘ ◽  
V. PSOTA
Keyword(s):  
Czech Republic ◽  
Spring Barley ◽  
The Czech Republic
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