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Rumen undegradable protein (RUP) and its intestinal digestibility after steam flaking of cereal grainsOriginal PaperMaria Chrenkova, Zuzana Formelova, Zuzana Ceresnakova, Catalin Dragomir, Matus Rajsky, Ana Cismileanu, Martin Riis WeisbjergCzech J. Anim. Sci., 2018, 63(4):160-166 | DOI: 10.17221/74/2017-CJAS While it is known that heat treatment of cereal grains generally improves the nutritional value for ruminants, simultaneous information on rumen degradability and intestinal digestibility of the rumen by-pass is scarce, especially for non-starch constituents. The effect of steam flaking at 90°C for 30 min on protein quality of maize, wheat, and barley was studied. In addition to proximal chemical analyses, protein rumen degradability was determined in vitro and intestinal digestibility of rumen undegraded protein was determined using the mobile bag method. No significant effects of steam flaking on chemical composition of cereal grains (crude protein, acid detergent fibre, neutral detergent fibre, and starch) were observed. The protein fractions that are relevant to rumen degradability were significantly influenced by the steam flaking: the non-protein nitrogen fraction (A) was reduced (P < 0.05) by 43-93% for all three cereal grains, whereas the fraction that represents true soluble protein (B1) was reduced (P < 0.05) for wheat grains (by 77%) and barley (by 93%). Although the difference was not significant, a decrease of 41% for B1 fraction was also observed for maize. On the other hand, steam flaking markedly increased buffer insoluble but neutral detergent soluble protein fraction (B2) by 15-25% for all three cereal grains, whereas effects on B3 fraction were not significant. Steam flaking was also associated with an increase of the rumen undegradable protein fraction (C) in the case of barley, from 6.6 to 11.1% of total N (P < 0.05) and wheat, from 5.2 to 8.4% of the total N (P < 0.05). Overall, the changes of the protein fractions led to a considerable increase of the rumen undegradable protein (RUP) for all steam-flaked cereal grains (P < 0.05). Steam flaking also increased (P < 0.05) intestinal digestibility of RUP of the cereal grains (by 3.6-34.8%), leading to a more efficient protein use in ruminants. |
Restrainer exposure to scatter radiation in practical small animal radiography measured using thermoluminescent dosimetersOriginal PaperH. Oh, S. Sung, S. Lim, Y. Jung, Y. Cho, K. LeeVet Med - Czech, 2018, 63(2):81-86 | DOI: 10.17221/115/2017-VETMED This study was aimed at estimating restrainer exposure to scatter radiation in veterinary radiography using thermoluminescent dosimeters (TLDs) in different positions, and at different anatomic regions. A prospective study was conducted to measure exposure dose of two restrainers: A (cathode side) and B (anode side), and an observer C (at a 1-meter distance from the X-ray table) over two months. Protective devices included panorama mask, thyroid shield and arm shield. TLDs were placed on the inside and outside of the protective gear at five different anatomic sites (eye, thyroid, breast, gonad and arm). The study data consisted of 778 exposures, 82 patients (78 dogs, four cats), a mean kVp of 58.7 and a mean mAs of 11.4. The doses (outside the shield/inside the shield, in mSv) measured by restrainers A, B and C were eye (3.04/0.42), (2.29/0.17), (0.55/0.01), thyroid (2.93/0.01), (1.97/0.01), (0.19/0.01), breast (1.01/0.04), (0.73/0.01), (0.32/0.01), gonad (0.07/0.01), (0.01/0.01), (0.16/0.01) and arm (2.81/1.43), (1.17/0.01), (0.08/0.01), respectively. This study describes the extent of occupational radiation exposure in small animal radiography. The exposure dose for eyes outside lead protection showed the highest value in all participants. With lead protection, the reduction in the exposure dose of eyes was significant (A: 86%, B: 93%, C: 98%), and the highest reduction was 99% in the thyroid region. These results suggest the necessity of radiation shields in manual restraint, particularly for eye protection. |
Influence of selected Polish and American rootstocks on the growth and yield of 'Golden Delicious Reinders' apple treesOriginal PaperPaweł Bielicki, Marcin PąśkoHort. Sci. (Prague), 2018, 45(1):18-21 | DOI: 10.17221/23/2017-HORTSCI This study was conducted in the period 2010-2015 to assess the influence of rootstocks on the growth and fruiting of apple trees of the 'Golden Delicious Reinders' cultivar. The experiment was conducted in an experimental orchard in Dąbrowice, Poland. The experimental material consisted of the Polish rootstocks P 66, P 67, P 68 and P 16, and the following American rootstocks of the Cornell Geneva series resistant to fire blight: CG.11, CG.41, CG.013 and CG.202. The rootstocks M.9T337, M.26, P 14 and P 60 were used as the control combination. The best-yielding trees were those from the CG.11 rootstock, while those from P 14 and P 67 were the lowest-yielding. Trees from the latter rootstocks grew most vigorously and had the lowest productivity index. |
Molecular diversity and assessment of reactions of pepper pure line germplasm to Botrytis cinereaOriginal PaperIlknur Polat, Ömür Baysal, Emine Gümrükcü, Görkem Sülü, Aytül Kitapci, Ramazan Özalp, Ibrahim Çelik, Zübeyir Devran, Ersin PolatPlant Protect. Sci., 2018, 54(3):147-152 | DOI: 10.17221/44/2017-PPS The host resistance level of pure line materials was assessed in the genepool for the purpose of breeding. The highest resistance to the pathogen was observed in bell-type pepper. Moreover, genetic diversity of pure lines was investigated using selected inter-simple sequence repeat (ISSR) primers. Generally, genetic markers showed genetic diversity, so that long-type pure lines were separated from the other accessions. This is the first report on host reactions of Turkish pure lines as breeding material. These results provide significant information for future pepper breeding programs. |
Influence of weather conditions on the physicochemical characteristics of potato tubersOriginal PaperOlga ESCUREDO, Ana SEIJO-RODRÍGUEZ, M. Shantal RODRÍGUEZ-FLORES, Montserrat MÍGUEZ, M. Carmen SEIJOPlant Soil Environ., 2018, 64(7):317-323 | DOI: 10.17221/144/2018-PSE Physicochemical properties of the tuber as a commercial product differ according to environmental conditions of the area and the growing season. The knowledge about how weather affects these characteristics, allows estimating the correct selection of the cultivars in order to obtain the highest yields or desired physicochemical qualities. In this sense, the effect of the main meteorological factors on the physicochemical characteristics (size, texture, dry matter, soluble solids, phenols, flavonoids, carotenoids and inhibitor concentration (IC50)) of 8 potato cultivars growing in A Limia (North-West Spain) was analysed. The study was conducted during three consecutive years (2014-2016) and the results presented significant differences in the analyzed parameters between years (P < 0.05). Spearman's correlations and principal component analysis showed that the tubers of 2014 (with colder weather conditions) had the highest phenol content and the lowest flavonoids and carotenoids content. Therefore, the temperature positively favoured the flavonoid content and carotenoid content (samples from 2016), although the size of potato tubers was considerably smaller. |
Rapid detection of microbial contamination in UHT milk: practical application in dairy industryFood Analysis, Food Quality and NutritionMartina KRAČMAROVÁ, Hana STIBOROVÁ, Šárka HORÁČKOVÁ, Kateřina DEMNEROVÁCzech J. Food Sci., 2018, 36(5):357-364 | DOI: 10.17221/24/2018-CJFS Microbial quality of ultra-high temperature (UHT) milk is usually ascertained by a total bacterial count (TBC) cultivation. But this is time consuming, so there is a tendency to search for faster and simpler methods. We compared three instruments, focusing on shortening the detection time and their suitability for practical use in dairy plants. Two of them, RapiScreen Dairy 1000 and Promilite III, detect microbial contamination by measuring adenosine triphosphate bioluminescence; the third, GreenLight, is based on oxygen consumption analysis. In the laboratory experiments, samples of UHT milk, were spiked with low concentration of microorganisms and then the level of microbial contamination was evaluated using the above-mentioned instruments together with cultivation method as a control. The instruments were also applied in a dairy plant to test 182 real samples. All investigated methods determined microbial quality faster than the TBC, but in some cases false positive and false negative results were obtained. Therefore, precise testing including optimizing pre-incubation time for bacteria enrichment is needed prior to industrial use. |
List of field crop varieties registered in the Czech Republic in 2017New VarietiesTomáš MezlíkCzech J. Genet. Plant Breed., 2018, 54(1):39-40 | DOI: 10.17221/17/2018-CJGPB |
Financial sustainability of a public-private partnership for an agricultural development project in Sub-Saharan AfricaOriginal PaperDonato MOREA, Marino BALZARINIAgric. Econ. - Czech, 2018, 64(9):389-398 | DOI: 10.17221/161/2017-AGRICECON Land, water, sun, infrastructure, capital and know-how are needed for any agricultural development. Sub-Saharan Africa has immense natural resources, though often not immediately available altogether in the same place, but is generally short of the other inputs. That is why a public-private partnership can be an effective approach to deal the projects with modern agricultural development: public partner provides land, most of the infrastructure and finance; private partners provide the intensive farming practice, processing know-how and part of the equity. Financial analysis of lower and higher capital demanding scenarios and testing of the impact of changes in the critical drivers of costs and revenues shown that a combination of staple crops and cash crops can be found to balance national food security policy targets and financial appeal for private partners in a mutually satisfactory venture capital. The effect of environmental and infrastructural constraints was also considered, showing how likely-to-happen threats on the side of the implementation of the project may turn into challenging opportunity to climb the agribusiness value chain upward. |
Field occurrence of avian infectious bronchitis virus in the Czech Republic and SlovakiaOriginal PaperM. Klimcik, R. CurrieVet Med - Czech, 2018, 63(3):137-142 | DOI: 10.17221/109/2017-VETMED The epidemiological situation regarding the infectious bronchitis virus (IBV) population in Europe as well as the presence of predominant IBV strains is well described. The aim of this epidemiological study was to describe the real field situation in the Czech Republic and Slovakia, as no data are available for the last ten years. The study was also focused on differentiation between field IBV strains and vaccine/vaccine origin IBV strains in different poultry segments including backyard flocks. Between July 2013 and July 2016, cloacal, tracheal and/or visceral swab samples were collected from 145 Czech and Slovak chicken broiler, breeder and layer flocks. The majority of flocks was kept for production purposes, but to enable a more complete picture of the situation in the field backyard flocks with more than 50 birds were also included. As in other cases which were reported worldwide and based on collaboration with x-Ovo laboratories, samples were analysed using the real-time polymerase chain reaction (RT-qPCR) to detect the presence of the RNA of IBV. When positive, approximately 400 base pairs encoding the hypervariable region of the IBV S1 protein were sequenced. Sequencing results, cycle threshold values and vaccination history were used as criteria to try and distinguish vaccine strains from field strains. A significant percentage of all flocks presented clinical signs suggestive of IBV infection. From the total number of samples examined, 16.5% were negative. In 12.4% of the samples that did contain RNA from IBV, the genotype could not be determined. In most cases, this was due to the recovery of RNA quantities below the lower limit of detection of the sequencing PCR. The remaining positive samples predominantly contained RNA from IBV strains that belonged to the 4/91 - 793B - CR88 (44.7%), Massachusetts (30%), D274 - D207 (11.6%) and D388 - QX (8.7%) genotypes. Estimations indicated that approximately 23.9%, 48.4%, 58.3% and 0% of these detections, respectively, were vaccine strains. Infections with types UKR/27/2011, CK/CH/Guandong/Xindadi/0903 and K33/09 were observed sporadically. The results confirm that IBV infections are highly prevalent in Czech and Slovak chickens and that at least seven different IBV types were circulating during the monitored period. This underlines the necessity of providing flocks with a strong and broad protective immunity against IBV. |
Price volatility of Polish agricultural commodities in the view of the Common Agricultural PolicyOriginal PaperPiotr BORAWSKI, Aneta BELDYCKA-BORAWSKA, James W. DUNNAgric. Econ. - Czech, 2018, 64(5):216-226 | DOI: 10.17221/138/2016-AGRICECON In the paper, the price volatility was examined. The authors used 650 weekly observations from 2003 to 2015. Such a long period of analysis helped to reveal periods with high volatility. The objective of the paper was to recognize price volatility of agricultural commodities in Poland. The authors chose beef, pork and wheat markets to show the differentiation of price volatility. It revealed periods of large and small volatility. The global market situation impacted Polish agricultural markets with the opening markets and a greater access to the new markets. The periods having the strongest impact on Polish agricultural markets were the integration with the EU, the global crisis in 2008, and problems in the EU zone. The prices of analysed agricultural commodities differed in various EU countries. The prices of wheat increased most in France, Hungary and Lithuania. The prices of store cattle increased most in the years 2004-2015 in Estonia, Sweden and Luxemburg. The prices of pigs increased most in Malta, Sweden and Cyprus. |
Apple rootstock trials at Warsaw University of Life Sciences-SGGW, PolandOriginal PaperCezary Piestrzeniewicz, Dariusz Wrona, Ewa Jadczuk-Tobjasz, Andrzej SadowskiHort. Sci. (Prague), 2018, 45(2):69-75 | DOI: 10.17221/205/2016-HORTSCI valuation of 22 dwarfing and semi-dwarfing apple rootstocks for several scion cultivars was conducted on fertile soil in the years 1995-2010. It was found that most of the new rootstocks performed similarly to M.9 EMLA with respect to vigour, yield, cropping efficiency and fruit mass. These rootstocks would not be, therefore, a good replacement for M.9 in Polish climatic conditions. The most promising rootstock was B 9 and some of its derivatives, e.g., B 146, B 396, P 59 and P 60. However, their suitability may be limited to particular cultivars grown under similar soil conditions. |
Consumption of atmospheric methane by soil in a lowland broadleaf mixed forestOriginal PaperJiří DUŠEK, Manuel ACOSTA, Stanislav STELLNER, Ladislav ŠIGUT, Marian PAVELKAPlant Soil Environ., 2018, 64(8):400-406 | DOI: 10.17221/183/2018-PSE Soils of forest ecosystems can release or consume methane (CH4) depending on their specific hydrological regime. Our study reported the consumption of CH4 by soil in a lowland broadleaf mixed temperate forest in the Czech Republic (Central Europe). The motivation of our study was to determine the importance of CH4 fluxes in context of carbon dioxide (CO2) fluxes of a broadleaf mixed forest. CH4 and CO2 emissions from the soil were measured during the 2016 vegetation season on a long transect applying the chamber technique. The average daily consumption of atmospheric CH4 by the forest soil ranged from 0.83 to 1.15 mg CH4-C/m2/day. This consumption of CH4 during summer and autumn periods was not significantly affected by soil temperature and soil moisture. However, during spring period the consumption of CH4 was positively significantly affected by soil temperature and moisture. Estimated amount of carbon (CH4-C) consumed by the forest soil makes up a very small part of carbon (CO2-C) participated in the ecosystem carbon cycle. |
Pollution status of agricultural land in China: impact of land use and geographical positionOriginal PaperXiaoming WAN, Junxing YANG, Wei SONGSoil & Water Res., 2018, 13(4):234-242 | DOI: 10.17221/211/2017-SWR According to the Soil Pollution Prevention and Control Action Plan released in May 2016, the soil quality of 666 666.7 ha of agricultural soil requires remediation before 2020. Despite the survey on the environmental quality of soil in China released in 2014, detailed data on current pollutant concentrations remain unavailable. To date, reports on soil environmental quality on the national scale are few. The current research aimed to gain a detailed understanding of soil pollution in China through literature study and data analysis. Data for eight potentially toxic elements (i.e., arsenic (As), cadmium (Cd), zinc (Zn), chromium (Cr), mercury (Hg), copper (Cu), nickel (Ni), and lead (Pb)) and two organic pollutants (i.e., hexachlorocyclohexane (HCH) and dichlorodiphenyltrichloroethanes (DDTs)) were collected from 367 areas involving 163 prefecture-level cities. Principal component analysis and clustering analysis were conducted to understand the relationships among pollutants. Results indicated that organic pollution was less severe than inorganic pollution. In terms of land-use types, garden soil showed the heaviest pollution, followed by arable land and woodland. Regarding geographic distribution, the south central and southwest areas displayed heavy pollution. Principal component and clustering analyses revealed that As, Hg, HCH, and DDTs were mainly contributed by anthropogenic sources; Cr, Cu, Ni, and Zn were primarily caused by natural background; and Cd and Pb were contributed by both sources. The soil pollution status varied among land-use types and geographic areas. The implementation of proper remediation strategies requires detailed investigations on soil environmental quality. |
Social inclusion in the context of Czech rural development policyOriginal PaperEva KUCEROVAAgric. Econ. - Czech, 2018, 64(9):412-422 | DOI: 10.17221/160/2016-AGRICECON The paper addresses social inclusion. It aims to investigate how social inclusion was conceptualized in the main Czech policy documents related to the EU. The text argues that one of the tools of social inclusion - social economy represented by social entrepreneurship and social farming - is a sort of innovative practice. The findings suggest that the understanding of social inclusion evolves within policy documents towards highlighting social economy through matching its theoretical concept with political measures. However, social economy is still not considered by the documents as an innovative approach. If analysing projects funded under Czech Rural Development Programs, social inclusion in rural areas is not the main theme, especially in regions exposed to the risk of social exclusion. In addition, the main actors (NGOs or social entrepreneurs) who are said to support social economy or social farming are not active in submitting projects in rural areas under the Rural Development Program 2007-2013. These actors have not yet used their potential towards developing social economy. |
Claw health and feed efficiency as new selection criteria in the Czech Holstein cattle Krupová Z., Wolfová M., Krupa E., Přibyl J., Zavadilová L.Original PaperZuzana Krupová, Marie Wolfová, Emil Krupa, Josef Přibyl, Ludmila ZavadilováCzech J. Anim. Sci., 2018, 63(10):408-418 | DOI: 10.17221/44/2018-CJAS The objective of this study was to calculate economic weights for ten current breeding objective traits and for four new traits characterising claw health and feed efficiency in Czech Holstein cattle and to investigate the impact of different selection indices on the genetic responses for these traits. Economic weights were estimated using a bio-economic model, while applying actual (2017) and predicted (2025) production and economic circumstances. For the actual situation, the economic weights of claw disease incidence were -100.1 € per case, and those of daily residual feed intake in cows, breeding heifers, and fattened animals were -79.37, -37.16, and -6.33 €/kg dry matter intake per day, respectively. In the predicted situation, the marginal economic weights for claw disease and feed efficiency traits increased on average by 38% and 20%, respectively. The new traits, claw disease incidence and daily residual feed intake, were gradually added to the 17 current Holstein selection index traits to improve the new traits. Constructing a comprehensive index with 21 traits and applying the general principles of the selection index theory, a favourable annual genetic selection response was obtained for the new traits (-0.008 cases of claw disease incidence and -0.006 kg of daily residual feed intake across all cattle categories), keeping the annual selection response of the most important current breeding objective traits at a satisfactory level (e.g., 73 kg of milk yield per lactation, 0.016% of milk fat). Claw health and feed efficiency should be defined as new breeding objectives and new selection index traits of local dairy population. |
Ultrasonographic characteristics of benign mammary lesions in bitchesOriginal PaperB. Gasser, M.G.K. Rodriguez, R.A.R. Uscategui, P.A. Silva, M.C. Maronezi, L. Pavan, M.A.R. Feliciano, W.R.R. VicenteVet Med - Czech, 2018, 63(5):216-224 | DOI: 10.17221/87/2017-VETMED The aim of this study was to evaluate the applicability of B-mode, Doppler, acoustic radiation force impulse elastography and contrast-enhanced ultrasound exams in the differentiation of neoplastic and non-neoplastic benign mammary lesions in bitches. This research was conducted as a prospective secondary observational cohort (2014-2016) study, which included 36 mammary lesions, evaluated physically and by ultrasound (B-mode, Doppler, contrast-enhanced ultrasound and acoustic radiation force impulse) exams prior to mastectomy and histopathological classification as neoplastic or non-neoplastic lesions. All ultrasonographic parameters studied were compared between histopathological classifications using Fisher's or Student's tests and differences were considered significant when P < 0.05. Out of 36 benign mammary lesions evaluated, 25 were classified as neoplastic and 11 as non-neoplastic. The qualitative and quantitative parameters evaluated using the different ultrasound methods were not effective (P > 0.05) in differentiating between neoplastic and non-neoplastic mammary masses in bitches. Nevertheless, some B-mode variables, such as longitudinal length (P = 0.0292), width/length ratio (P = 0.0001) and width/height ratio (P = 0.0001) showed limited efficacy in the differentiation of mammary lesions types. In conclusion, ultrasonographic evaluation of benign canine mammary lesions did not allow differentiation between neoplastic and non-neoplastic tissues and only a few B-mode variables may aid in the prediction of specific tumour types. |
A global meat tax: from big data to a double dividendOriginal PaperJarka CHLOUPKOVA, Gert Tinggaard SVENDSEN, Tomas ZDECHOVSKYAgric. Econ. - Czech, 2018, 64(6):256-264 | DOI: 10.17221/270/2016-AGRICECON The Food and Agriculture Organization of the United Nations (FAO) emphasizes the right of everyone to have access to safe, sufficient and nutritious food in its Rome Declaration. This article suggests how this noble FAO goal can be achieved. We suggest that a first step could be the introduction of a global meat tax, where the size of the negative externalities from meat production could be calculated based on foresight and big data. Applying the tool of a global meat tax will lead to a "double dividend" as negative externalities are reduced and at the same time huge tax revenues will be generated which could be used to make further steps in the direction of achieving the stated FAO goal in the Rome Declaration. |
Impacts of technology and the width of rows on water infiltration and soil loss in the early development of maize on sloping landsOriginal PaperMarcel HEROUT, Jan KOUKOLÍČEK, David KINCL, Kateřina PAZDERŮ, Jaroslav TOMÁŠEK, Jaroslav URBAN, Josef PULKRÁBEKPlant Soil Environ., 2018, 64(10):498-503 | DOI: 10.17221/544/2018-PSE Soil erosion by water has become an issue in the cultivation of maize (Zea mays L.) on sloping lands in recent years. The following three technologies of tillage have been assessed: disc cultivator, strip-till and no-till (raw land). Seeding machine Kinze 3500 was used for sowing maize cultivar Silvinio FAO 210. The experiments were conducted within the years 2013, 2014 and 2016. Erosion was evaluated under simulated rain in three stages of maize growth. The following parameters of each tested tillage treatment were measured: water infiltration (mm), soil loss (converted to t/ha), dry matter yield of the aboveground biomass and grain yield. The results confirmed that no-till technology reduced water erosion to the value of 0.40 t/ha. This technology along with the row spacing of 0.75 m tended to bring higher yields of aboveground biomass (13.40 t/ha). Tillage and phacelia as a catch crop increased water infiltration in the soil. |
Green finance for sustainable green economic growth in IndiaOriginal PaperParvadavardini SOUNDARRAJAN, Nagarajan VIVEKAgric. Econ. - Czech, 2016, 62(1):35-44 | DOI: 10.17221/174/2014-AGRICECON Green finance is a core part of the low carbon green growth, because it connects the financial industry, environmental improvement and economic growth. The objective of this paper is to study the green finance and to validate the concept as feasible in the Indian industries for balancing the ecological depreciation due to the assimilation of carbon gases in atmosphere. Green Finance is a market-based investing or lending program that factors environmental impact into risk assessment, or utilizing environmental incentives to drive business decisions. Therefore, the paper also discusses the recent trends and the future opportunities and challenges in green finance in the emerging India. Green investing recognizes the value of the environment and its natural capital and also seeks to improve the human well-being and social equity while reducing environmental risks and improving the ecological integrity. |
A comparative analysis of organic and conventional farmers in the Czech RepublicOriginal PaperJosef KRAUSE, Ondrej MACHEKAgric. Econ. - Czech, 2018, 64(1):1-8 | DOI: 10.17221/161/2016-AGRICECON Organic farming has become a topic that receives an increasing academic as well as popular attention. This study examines the financial differences between the organic and conventional farmers, as well as their income volatility. Based on the Student's t-test, the regression analysis and the matched-pair investigation on a sample of Czech 291 organic and 4045 conventional farmers over the period 2009-2013, the study indicates that the organic agricultural companies outperform the conventional companies in the terms of profitability. However, their asset turnover is considerably lower. No evidence of different income volatility has been found. |
Sugar beet yield loss predicted by relative weed cover, weed biomass and weed densityOriginal PaperRoland Gerhards, Kostyantyn Bezhin, Hans-Joachim SantelPlant Protect. Sci., 2017, 53(2):118-125 | DOI: 10.17221/57/2016-PPS Sugar beet yield loss was predicted from early observations of weed density, relative weed cover, and weed biomass using non-linear regression models. Six field experiments were conducted in Germany and in the Russian Federation in 2012, 2013 and 2014. Average weed densities varied from 20 to 131 with typical weed species compositions for sugar beet fields at both locations. Sugar beet yielded higher in Germany and relative yield losses were lower than in Russia. Data of weed density, relative weed cover, weed biomass and relative yield loss fitted well to the non-linear regression models. Competitive weed species such as Chenopodium album and Amaranthus retroflexus caused more than 80% yield loss. Relative weed cover regression models provided more accurate predictions of sugar beet yield losses than weed biomass and weed density. |
Assessment of the glomalins content in the soil under winter wheat in different crop production systemsOriginal PaperAnna GAŁĄZKA, Karolina GAWRYJOŁEK, Anna GAJDA, Karolina FURTAK, Andrzej KSIĘŻNIAK, Krzysztof JOŃCZYKPlant Soil Environ., 2018, 64(1):32-37 | DOI: 10.17221/726/2017-PSE The aim of the study was to evaluate the glomalins content (total glomalin (TG), easily extractable glomalin (EEG) and glomalin-related soil proteins (GRSP)) in the soil under winter wheat from different crop production systems. The experiment involved four different cultivation systems: organic, integrated (INT), conventional (CON), monoculture-conventional (MON). The highest content of TG and GRSP proteins were observed in organic system. A strong positive correlation was observed between the total number of glomalins and dehydrogenase activity and organic matter. A strong correlation between TG and GRSP content was observed (r = 0.93) as well as between EEG and GRSP (r = 0.79). The highest yields of winter wheat were observed in CON (9.12 t/ha) and INT (9.04 t/ha) systems, while the lowest in monoculture (4.47 t/ha). |
Is economic institutional adaptation feasible for agri-environmental policy? Case of Good Agricultural and Environmental Condition standardsReviewJana POLAKOVAAgric. Econ. - Czech, 2018, 64(10):456-463 | DOI: 10.17221/138/2017-AGRICECON This review focuses on Czech implementation of standards for soil and water protection called Good Agricultural and Environmental Conditions (GAEC), with linkage to the European Union (EU) level. I investigate different elements of adaptive institutional economics: (i) summarise current knowledge regarding the social reasons for introducing GAEC; (ii) assess the evidence linked to GAEC to better understand the potential as well as boundaries of formalizing cause-effect links; (iii) clarify the pertinence of producers' claims on costs accruing from GAEC implementation. These three points highlight the thesis of this paper: implementation in farmers' practices of the theoretical concept of sustainability in terms of bridging together economics, society and the environment. The economic reasoning for GAEC introduction within adaptive institutional economics stems from the relational positioning of the knowledge of the costs of the impact of agricultural land use on other characteristic rural land uses. GAEC are needed, albeit the size of support obtained by producers surpasses the costs of complying; therefore, the result pays off for farms. We have learned that GAEC implementation is important from regional to EU levels and that its role is more related to economic institutional adaptation than to regulation. Adaptation of institutional economics is therefore feasible, making it possible to understand GAEC as a network which manages and enables knowledge transfer linked directly to regulation. Institutional economics can link sustainability with farmers' practices and accounts for the behaviour of the farmers. In this review, I find that, for society, it is necessary to require measurement of agri-environmental outcomes for water resources, soil and biodiversity through GAEC at appropriate scales. These scales are likely to be relevant to adaptive institutional economy localities perceived by the rural public. |
High pressure inactivation of Enterococcus faecium - modelling and verificationAleš Landfeld, Jan Strohalm, Karel Kýhos, Jiřina Průchová, Milan Houška, Pavla Novotná, Ljuba Schlemmerová, Hana Šmuhařová, Vladimir Špelina, Pavel Čermák, Kveta Pavlišová, Pavel MěřickaCzech J. Food Sci., 2009, 27(2):134-141 | DOI: 10.17221/1052-CJFS High-pressure inactivation data were obtained for model working suspensions of Enterococcus faecium in saline solutions in pH range from 5.5 to 6.8, at water activity 0.99 (corresponding to the saline solution). The data were predicted for the pressure range of 450 MPa to 550 MPa, at the initial model suspension temperature 6-7°C prior to pressurising. The results indicate that E. faecium is a highly resistant organism under physiological pH values. With decreasing the substrate pH, the tolerance to the inactivation effects of high pressure decreased. The high-pressure inactivation proved ineffective for the above organism in the range of physiological pH values. The values for high-pressure inactivation model were specified and the calculated parameters of high-pressure inactivation were compared to the experimental data for the working suspensions of E. faecium in cow and human milks. As to cow milk, the predicted data showed some deviation from the model experimental results, while with human milk the model failed completely. High-pressure inactivation of E. faecium in human milk proved to be significantly more effective than that predicted by a model based on the saline solution. |
Degradation of forest soils in the vicinity of an industrial zoneOriginal PaperLenka PAVLŮ, Ondřej DRÁBEK, Luboš BORŮVKA, Antonín NIKODEM, Karel NĚMEČEKSoil & Water Res., 2015, 10(2):65-73 | DOI: 10.17221/220/2014-SWR Forest soils near industrial zones can be endangered by acid deposition and by dust deposition containing potentially toxic elements (PTEs). Soils of the study area are acidified and the surface enrichment with Cd, Cu, Pb, and Zn reflects anthropogenic contamination. Two forms of all PTEs were evaluated: potentially mobilized (2M nitric acid extraction) and mobile (0.01M CaCl2 extraction) - the most toxic form. Negligible amounts of Cu and Pb were found in the mobile form. Pb mobilization is decreased by co-emitted bases and Cu mobilization is mainly controlled by soil reaction. These elements represent just a potential risk for the ecosystem. The mobile forms of Cd, Zn, and Mn account for approximately 30% of potentially mobilized forms in organic horizons. These elements could pose a problem to ecosystem vitality. Cd is toxic at small concentration and its content in mobilized form approaches the critical load. Cd can be considered the most dangerous element in the study area. Zn concentration is not reaching the limit value. Mobilization of Zn and Pb is mainly controlled by Ca and Mg content. The highest concentrations of Mn were found in the mineral horizons. It predicates a geogenic origin. The lowest percentage of the mobile form is in mineral horizon and its mobilization is controlled mainly by pH. Based on these results, a direct damage of forest by PTE contamination in the Silesian Beskids can be excluded. Lower contamination level along with acid condition and P deficiency could act as a permanent stress factor. Stressed forest is more predisposed e.g. to frost or insect damage. |
An assessment of the applicability of dung count to estimate the wild boar population density in a forest environmentOriginal PaperR. Plhal, J. Kamler, M. Homolka, J.DrimajJ. For. Sci., 2014, 60(4):174-180 | DOI: 10.17221/99/2013-JFS Wild boar is a native species in the fauna of the Czech Republic. It is becoming a problematic game species both in the Czech Republic and in other European countries due to its harmful impacts. So far no suitable method of its sustainable management has been devised. Yet, a correct abundance estimate is essential for proper management, field crop damage prevention and proper hunting planning. This paper employed faecal pellet group count to estimate the wild boar density in a forest environment. The research was conducted in a study area covering 12.83 km2, which is surrounded by farmland. The count was done under ideal conditions in early spring, after snow had melted. The study area was organised into several differing environments in which different dung densities were expected. The presence of feeding sites, where wild boars concentrated, was taken into account. The conducted count confirmed differences in the utilization of different habitats within the study area. The resulting wild boar abundance was estimated at 64.3 (± 8.9; 95% CI) indd.km-2. |
Technical efficiency and its determinants in the European UnionOriginal PaperAnna NOWAK, Tomasz KIJEK, Katarzyna DOMAŃSKAAgric. Econ. - Czech, 2015, 61(6):275-283 | DOI: 10.17221/200/2014-AGRICECON The study concerns the measurement of the technical efficiency of agriculture in the 27 European Union (EU) countries in 2010. The studies were conducted based on the result-oriented DEA method assuming variable advantages of scale. Moreover, in the study, the factors affecting technical efficiency were identified, and the econometric modelling of their impact was performed with the use of the Tobit model. The studies indicate that across the 27 EU Member States, the level of the technical efficiency of agriculture is diverse, and the difference between the states with the highest and the lowest efficiencies is 40%. Cyprus, Denmark, Greece, France, Spain, the Netherlands, Luxembourg, Italy and Malta were identified as the countries with the thoroughly technically efficient agriculture. In turn, the least technically efficient agriculture is observed for the Czech Republic, Lithuania, Hungary, Ireland, Latvia and Slovakia. Taking into account the factors determining the technical agriculture efficiency, it should be noted that the stimulants have proven to be such factors as: the soil quality, the age of the head of the household and the surcharges for investments. In turn, the size of the farm appeared to be irrelevant from the viewpoint of the technical efficiency of the agricultural sector. |
The costs of Age Management in agricultural companiesOriginal PaperHana URBANCOVÁ, Helena ČERMÁKOVÁAgric. Econ. - Czech, 2015, 61(1):14-22 | DOI: 10.17221/93/2014-AGRICECON In view of the strengthening demographic trend of ageing of the population and the pension reform underway in the Czech Republic, the problem of Age Management, which focuses on the management taking into account the age of employees, has become very current from the perspective of securing manpower. The agricultural sector has also long been facing problems in the area of manpower. Therefore, the aim of the article is to analyse and evaluate the costs for supporting the Age Management in agricultural businesses and to propose measures leading to the effective utilization of these analysed financial means. The data were acquired on the basis of a quantitative survey with the aid of a questionnaire survey in agricultural businesses in the Czech Republic (the number of businesses: n = 436, the number of agricultural businesses: nz = 103). One of the conclusions of the article is that 24.3% of the approached agricultural businesses are implementing the Age Management. These are primarily small and medium agricultural businesses with up to 50 employees, which incur in average 6 to 10% of operational costs in relation to the gained profits on the application of the Age Management principles. |
The telemetric tracking of wild boar as a tool for field crops damage limitationOriginal PaperJ. Jarolímek, J. Vaněk, M. Ježek, J. Masner, M. StočesPlant Soil Environ., 2014, 60(9):418-425 | DOI: 10.17221/462/2014-PSE The article presents the possibilities of visual and statistical outputs from the telemetric tracking of game: activity data, heat map, home regions, movement routes and the points of occurrence. Nowadays the methods of the telemetric tracking of game are also used for finding the best ways to eliminate damage caused by wild boar generally, and field crops damage specifically. From telemetrically gained data it is possible to study the local habits of wild boar and their preference of crops and cultivars in various periods. On the basis of this knowledge it is possible to implement the necessary agrotechnical measures. The pilot processing and verification is run on the portal Zvěř (game) online (http://zver.agris.cz/). Currently there are 11 wild boars marked and tracked. The public part of portal is used for the basic presentation of data; in the non-public part the data of private subjects (agricultural companies and hunting organizations) that are not interested in public presentation are processed in the same way. In this way there is at disposal an integral system of wild boar tracking: capturing, marking, data collection, processing and presentation. This system can be used by research institutions, farmers and hunters. |
Determination of exposure to Fasciola hepatica in horses from Uruguay using a recombinant-based ELISAOriginal PaperJ. Sanchis, J. Suarez, G.V. Hillyer, J.A. Hernandez, M.A. Solari, C. Cazapal-Monteiro, A.M. Duque de Araujo, L.M. Madeira de Carvalho, A. Paz-Silva, R. Sanchez-Andrade, M.S. AriasVet Med - Czech, 2015, 60(9):483-488 | DOI: 10.17221/8439-VETMED The risk of exposure to Fasciola hepatica in horses from Uruguay was evaluated using ELISA and a recombinant surface protein (FhrAPS). Blood samples were collected from 368 horses from different districts. Detection of antibodies and the seasonal IgG pattern against the trematode was also established. The overall seroprevalence was 54% (ranging 23% November to 93% December). Significantly higher values were observed in the Anglo-Arab horses (86%) and in those older than xix year (63%). No sex- or origin-differences were observed. Two primary risk periods for infection in Uruguay have been identified, the end of spring and autumn. Exposure to the fluke should be taken into account among those horses feeding on pastures grazed by ruminants. Using FhrAPS-ELISA, helpful information concerning the risk of horses to the infection by trematode can be obtained. This test allows the opportunity to compare the results achieved in different laboratories by minimising specific regional effects. |
