Petr Konvalina

University of South Bohemia in České Budějovice

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Jan Moudrý

University of South Bohemia in České Budějovice

Ivana Capouchová

Czech University of Life Sciences Prague

Marek Kopecký

University of South Bohemia in České Budějovice

Z. Stehno

Crop Research Institute

Jaroslav Bernas

University of South Bohemia in České Budějovice

Dagmar Janovská

Crop Research Institute

Mohammad Ghorbani

University of South Bohemia in České Budějovice

Jan Moudrý

University of South Bohemia in České Budějovice

Yves Theoneste Murindangabo

University of South Bohemia in České Budějovice

Trong Nghia Hoang

University of South Bohemia in České Budějovice

Cooperative Institutions

University of South Bohemia in České Budějovice

Czech University of Life Sciences Prague

Sewanee: The University of the South

Crop Research Institute

Institute of Technology and Business

Slovak University of Agriculture in Nitra

Czech Academy of Sciences

University of Chemistry and Technology, Prague

Food Research Institute Prague

ORCID

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Life cycle assessment of biochar and cattle manure application in sugar beet cultivation – Insights into root yields, white sugar quality, environmental aspects in field and factory phases

Journal of Cleaner Production (2024)

Elnaz Amirahmadi Mohammad Ghorbani Theresa Krexner Stefan Hörtenhuber Jaroslav Bernas

Sugar factory

10.1016/j.jclepro.2024.143772

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Citations (8)

Relevance of entomopathogenic fungi in soil–plant systems

Plant and Soil (2023)

Yves Theoneste Murindangabo Marek Kopecký Kristýna Perná Petr Konvalina Andrea Bohatá

Biopesticide

Soil Food Web

Hypocreales

10.1007/s11104-023-06325-8

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Citations (5)

Differences in grain/straw ratio, protein content and yield in landraces and modern varieties of different wheat species under organic farming

Euphytica (2014)

Petr Konvalina Z. Stehno Ivana Capouchová E. Zechner Sandra L. Berger

10.1007/s10681-014-1162-9

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Citations (30)

Systems of farming and rural landscape in Czech Republic

Jan Moudrý Petr Konvalina

The contemporary state of farming has been evaluated and organic and conventional farming systems have been compared in the framework of the analysis of structure of farming in the Czech republic. The selective group of 437 associations, consisted of 3 subgroups, is divided into several categories according to the farming method and altitude. Parametres of plant and animal production and use of the agroenvironmental programmes and measures are evaluated. The evaluation of the structure of farming permits to find optimal possibilities of future development of conventional and organic farming in the Czech republic and of arrangements of the settings of grants and subsidies.

Extensive farming

Intensive farming

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The usability of grasses for energy purposes in relation to other crops.

Lucrări Ştiinţifice, Universitatea de Stiinte Agricole Şi Medicină Veterinară "Ion Ionescu de la Brad" Iaşi, Seria Agronomie (2010)

Jan Moudrý Petr Konvalina M. Prokeşová

Together with rising importance of renewable resources for the world energy industry the usability of energy crops has been more and more actual topic. Taking into consideration that the area for these crops has increased, it is necessary to concern many more factors and aspects related to their production. Beside the yield of dry matter, which is still considered the main criterion of production efficiency, it is necessary to take into account the environmental and some economic aspects. In this regard it seems suitable to use for energy purposes also other crops with yields under the profit break-even point of 12 t/ha that could not compete with established species. Energy grasses as reedgrass (Phalaris arundinacea), cocksfoot (Dactylis glomerata) or tall oat grass (Arrhenatherum elatius) with average yields of dry matter between 8 – 9,5 t/ha cannot be compared (as far as the yield is concerned) to maize (Zea mays) or miscanth (Miscanthus sinensis Anderss) for example, however these crops can be chosen to the crop rotation thanks to their environmental functions – soil protection and low site conditions requirements for example.

Phalaris arundinacea

Dactylis glomerata

Energy crop

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Natural Fusarium occurrence qualitative evaluation on cereals under conventional and organic system in the Czech Republic

Acta fytotechnica et zootechnica/Acta fytotechnica et zootechnica (2015)

Dagmar Janovská Leona Leišová‐Svobodová Ivana Capouchová Petr Konvalina Martin Káš

Cereals are the most growing crops under organic conditions. Cereals are supposed to be a source of mycotoxins produced by Fusarium species. Our research was led to describe the differences among natural Fusarium species occurrence in two localities and two growing systems â organic and conventional. The main differences were observed among years and cereal species. No statistically significant differences were determined between localities and farming systems. Keywords: Fusarium natural occurrence, organic farming, conventional farming

Natural farming

10.15414/afz.2015.18.si.19-21

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Rheological and Technological Quality of Minor Wheat Species and Common Wheat

InTech eBooks (2017)

Petr Konvalina Heirich Grausgruber Dang Khoa Tran Ondrej Vlasek Ivana Capouchová

Wheat is an important food grain source that nurtures millions of people around the world. Not only does wheat contain a large number of nutrients such as protein, wet gluten, etc., but also it has a lot of antioxidants such as dietary fibre, tocopherols, tocotrienols, etc. In a majority of cases, attention has been drawn to evaluate the grain yield and its components rather than its quality. The present investigation was carried out to evaluate the differences between minority wheat species and common wheat to determine the best rheological characteristics, technological quality as well as correlations between rheological and technological traits. The results revealed that hulled wheat species had a high protein content and wet gluten content. Einkorn and emmer were not suitable for 'classical' baking processing. But there is potential for other products, e.g. wheat rice (einkorn) or pasta (emmer). Spelt should be possible to be used in 'classical' baking industry, but the best solution is to use grain as a mixture with bread wheat. Also, this study showed a genotype variation in the antioxidant activity of einkorn, emmer, spelta and Triticum aestivum.

Wheat grain

Common wheat

Grain Quality

10.5772/67229

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Citations (2)

Opomíjené obilniny a pseudoobilniny

Petr Konvalina Jan Moudrý Dagmar Janovská Martin Káš

Ekologicti zemědělci hospodařici na orne půdě maji casto zajem o využiti opomijených plodin, jako jsou pluchate psenice (jednozrnka, dvouzrnka a spalda), některe dalsi obilniny (nahý oves a jecmen) a nebo pseudoobilniny (pohanka apod.). V soucasnosti chybi dostatek informaci o výběru odrůd, ziskani osiva a jejich agrotechnice jak v odborne literatuře, tak v povědomi zemědělců.

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Fusarium Identification by PCR and DON Content in Grain of Ancient Wheat

Petr Konvalina Ivana Capouchová Z. Stehno Jan Moudrý

Fusarium infestation and DON content were studied in genetic resources of spring wheat (einkorn, emmer wheat, spelt wheat, intermediate forms of bread wheat). The study aimed at the comparison of grain contamination rates in various wheat species being grown in organic farming systems. The trials were established on certified organic parcels in two different localities in the Czech Republic in 2009 and 2010. The PCR method and specific primers were used to detect Fusarium. The proportion of deoxynivalenol (DON) was indicated and measured by the immuno-affinity chromatography (ROSA® DON Quantitative Test). The grain DON contamination rate (1.25 mg/kg) was set up in compliance with the European Commission (EC) Regulation No. 1126/2007. This regulation sets up limits that have never been exceeded in any of the varieties. The strongest contamination rate was identified in grains of the control bread wheat varieties, and in the SW Kadrilj cultivar (0.98 mg/kg) being grown in Ceske Budejovice. On the other hand, quite a low proportion of DON was detected in the hulled wheat varieties (einkorn, emmer wheat, spelt wheat). Hull may serve as a protection of grains there, as it is eliminated just before the processing of grains. The occurence of Fusarium was influenced by a grown wheat species. The occurence of Fusarium poae in grains was influenced (P<0.01) by a reduced resistance of the crop stand to lodging (r=0.58). The occurence of this Fusarium species was the weakest one. Grains were less contaminated with Fusarium culmorum, whereas the contamination rate was dominantly influenced by the year, einkorn and emmer wheat were the least infested wheat species. Fusarium graminearum provoked the strongest and most serious contamination of grains. The proportion of DON in grains (r=0.69) was influenced (P<0.01) by the Fusarium graminearum contamination rate. Spring spelt wheat varieties were the least infested ones (Spalda bila jarni, VIR St. Petersburg). On the other hand, landraces of bread wheat and both control bread wheat varieties were the most contaminated ones (as they contained the highest proportion of DON in grains).

Fusarium culmorum

Common wheat

Grain Quality

Wheat grain

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Citations (8)

Differences in yield parameters of emmer in comparison with old and new varieties of bread wheat

African Journal of Agricultural Research (2012)

Petr Konvalina

Emmer wheat (Triticum diccocum Schrank) belonged to the most frequent species of cereals in the past.Nowadays, it is grown in arid and montane areas in particular.Interest in this cereal species has increased, as it is tolerant to biotic and abiotic stressing factors.Therefore, yield parameters were evaluated in three-year (2007, 2008 and 2010) trials that were carried out in two different localities in the Czech Republic.Results of the research were compared to characteristics of four old and two top modern bread wheat (Triticum aestivum L.) cultivars.The emmer wheat varieties were resistant to usual wheat diseases.They formed their yield by a quantity of productive tillers (2.5), whereas the varieties of bread wheat had less productive tillers (1.5) per one plant.The distribution of assimilates was worse in the emmer wheat plants and it provoked a lower harvest index (0.33) there.Grain yield of the emmer wheat varieties reached 58% of the yield level of the mean of control bread wheat varieties.High crude protein content in grain (17.91%) was an advantage of the emmer wheat varieties; the control bread wheat varieties reached 13.73%.Protein content was positively influenced (P < 0.01) by an ability of the emmer varieties to uptake as much nitrogen as possible from the soil during the flowering period.Adaptability to the land and climatic environmental conditions was another positive characteristic of the emmer wheat landraces in comparison with old and modern bread wheat varieties.

10.5897/ajar10.644

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Citations (6)