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The loading characteristics of landing in cats with different body weightsOriginal PaperY Song, M Wang, J Steven Baker, Y GuVet Med - Czech, 2019, 64(11):497-504 | DOI: 10.17221/13/2019-VETMED Nowadays, quadrupedal locomotion information is well established for dogs, horses, and pigs, and kinetic systems have been widely used for sensitive and reliable gait analysis. However, few studies have investigated cat locomotion and the data available are confusing and restricted, especially in relation to jumping. In addition, it has been suggested that several factors, including the influence of the body weight (BW), may be associated with the collection of the kinetic data measurements in dogs. This raises the question of whether the BW would influence the kinetic data measurements in cats. Therefore, this study was aimed at comparing the kinetic parameters of the landing during the jumping in cats with different BWs and to determine the associations between the BW and the kinetic parameters. Twelve client-owned cats were sub-divided into two groups based on the BW and were categorised as a thin group and a heavy group. Each cat was encouraged to jump from a table (1.0 m) onto a force plate several times. The trials were considered to be valid if the cat jumped normally onto the plate and then continued to walk forward. The kinetic parameters including the peak vertical force (PVF) and the vertical impulse (VI) were obtained for each limb. In addition, correlations between the PVF, VI, and BW and the symmetry index (SI) of the forelimbs and hindlimbs were also determined. Most of the kinetic parameters of the thin cats were significantly smaller than the heavy cats during the landing and these values increased as the BW increased, while the normalised PVF and VI of the forelimbs were significantly smaller in the heavy cats than in the thin cats. In addition, for both groups, the non-normalised or normalised PVF and VI were significantly larger in the forelimbs than the hindlimbs, and the SI of the PVF was significantly smaller at the forelimbs than in the hindlimbs. In conclusion, the results of this study showed substantial similarities and differences during the landing between thin and heavy cats. These findings should provide more reference data for the biomechanical motion analysis related to jumping in clinically intact cats. |
Effect of taxifolin on physicochemical and microbiological parameters of dry-cured pork sausageFood Analysis, Food Quality and NutritionAnita Rokaityte, Gintare Zaborskiene, Sonata Gustiene, Raimondas Raudonis, Valdimaras Janulis, Galina Garmiene, Arturas StimbirysCzech J. Food Sci., 2019, 37(5):366-373 | DOI: 10.17221/57/2018-CJFS The effect of taxifolin (TXF) with starter cultures (SC), such as Leuconostoc carnosum, or a mixture of strains Pediococcus pentosaceus and Staphylococcus xylosus, on the TXF stability was evaluated. UPLC analysis demonstrated that after 181 days of storage total TXF content was the highest in samples with TXF and L. carnosum (60%), compared to the 1st day of storage. The sausages with TXF and the mixture of P. pentosaceus and S. xylosus (56%) followed next. The samples treated only with TXF retained 40% of TXF, compared to the 1st day of storage. TXF had no significant effect on the growth of lactic acid bacteria. The accumulation of biogenic amines (BA), including histamine and putrescine, was more effectively reduced in sausages inoculated with the TXF plus P. pentosaceus and S. xylosus mixture. Using this mixture, the rate of lipolysis and processes of lipid oxidation were effectively slowed down. Fatty acid (FA) composition was stable in all cases. |
Reduction of surface runoff on sloped agricultural land in potato cultivation in de-stoned soilOriginal PaperDaniel Vejchar, Josef Vacek, David Hájek, Jiøí Bradna, Pavel Kasal, Andrea SvobodováPlant Soil Environ., 2019, 65(3):118-124 | DOI: 10.17221/736/2018-PSE Regarding the increased surface runoff from production areas, wide-row crops grown on slopes are considered risk crops. By reducing the surface runoff, it is possible to mitigate the negative effects on both the soil and the plants and positively influence the subsequent production, e.g., after application of de-stoning before planting. During this research, the tied ridging method was applied during planting by a two-row planter in both central and tractor trail furrows in potato rows and on the slope of 8.8% compared to a control plot without this treatment. Rainfall and surface water runoff were monitored, and the crop yields were compared. During three monitored years, up to 86% of the runoff water in the central furrows was saved compared to the control, whereas it was up to 72% in the wider furrows for tractor travel. The total yield was increased on the treated area, however, the increase could not be statistically proven. |
Impact of winter oilseed rape nutritional status during vegetative growth on yieldOriginal PaperWitold Grzebisz, Katarzyna Przygocka-Cyna, Witold Szczepaniak, Agnieszka ZawiejaPlant Soil Environ., 2019, 65(10):490-496 | DOI: 10.17221/512/2019-PSE The nutritional status of winter oilseed rape (WOSR) during its vegetative period is crucial for plant growth and can be used for the seed yield prediction. This hypothesis was verified based on the data from long-term field experiments. The experiment consisted of four potassium (K) treatments based on the progressive K supply potential to plants from soil and fertilizer and two magnesium treatments (-Mg, +Mg) conducted in 2013-2015. The content of nutrients (Ntot, P, K, Mg, Ca, Fe, Mn, Zn, Cu) was determined at the rosette stage (BBCH 30) for leaves and separately for leaves and stems in the late stage of inflorescence growth (BBCH 57-59). The low K content appeared as the key limiting nutrient in WOSR plants in the rosette stage due to the insufficient soil fertility level, depended even more on weather conditions. This negative K nutritional trait persisted through the whole vegetative WOSR growth. Its detection was possible, because stems were included in the diagnostic procedure. The most reliable prognosis of WOSR yield was conducted based on the nutritional status of stems in the late stage of the inflorescence development. |
Molecular S-genotyping of sweet cherry (Prunus avium L.) genetic resourcesOriginal PaperJosef Patzak, Alena Henychová, Franti¹ek Papr¹tein, Jiøí SedlákHort. Sci. (Prague), 2019, 46(3):146-152 | DOI: 10.17221/245/2017-HORTSCI Sweet cherries are self-incompatible, which is determined by a gametophytic self-incompatibility system (GSI). The self-incompatibility is controlled by a multi-allelic S-locus. Knowledge about the S-allele constitution of the cultivars is essential for fruit growers and breeders. Recently, molecular PCR-based methods have been developed to distinguish all S-alleles in sweet cherries. In our work, we analysed S-locus genotypes by 13 universal and allele-specific PCR primer combinations within 117 registered, old and local sweet cherry cultivars from the Czech genetic resources of the Research and Breeding Institute of Pomology in Holovousy, the Czech Republic. We confirmed the previous S-genotyping for 66 accessions except for Drogans Gelbe, Hedelfinger, Erika, Meckenheimer Frühe, Badeborner, Bing, Alfa, Gamma, Huldra, Rivan, Valerij Tschkalov, Viola and Winkler's Frühe. It could be due to either mislabelling or mistakes in the previous analyses. Newly, S-genotyping was determined for 51 accessions in which we found 4 new S-loci combinations. We detected the S-locus combinations in 19 incompatibility groups. The most frequent incompatibility groups were III (S3S4), II (S1S3), IV (S2S3), and VI (S3S6) with 22, 20, 12 and 12 genotypes, respectively. |
Environmental sustainability and economic matters of commercial types of common wheatOriginal PaperTeresina Mancuso, Tibor Verduna, Simone Blanc, Giuseppe Di Vita, Filippo BrunAgric. Econ. - Czech, 2019, 65(4):194-202 | DOI: 10.17221/172/2018-AGRICECON Common wheat, a fundamental commodity on international markets, is increasingly differentiated into commercial types on domestic markets to meet the demand of processing companies. Improver wheat, biscuit wheat, ordinary and superior bread-making wheat are commercial varieties with specific technological characteristics. Wheat farming systems are constantly evolving, and as a result, related environmental issues emerge. We applied an LCA (Life Cycle Assessment) analysis, where the functional unit was 1 tonne of grain for each typology and system boundaries were from cradle to farm gate. Primary data were used in the study, and special attention was paid to fertiliser use. From an LCA perspective, our findings show that nitrogen (N) plays an essential role in plant production although producing different waterborne and airborne emissions and nitrate leaching, for the 4 commercial typologies studied. Furthermore, the impact can be differentiated based on the technological features of the commercial types. Our results led us to observe that the four wheat types show contrasting economic and environmental performances. |
Impacts of straw, biogas slurry, manure and mineral fertilizer applications on several biochemical properties and crop yield in a wheat-maize cropping systemOriginal PaperZhen LIU, Kai SUN, Bin ZHENG, Qingling DONG, Geng LI, Huifang HAN, Zengjia LI, Tangyuan NINGPlant Soil Environ., 2019, 65(1):1-8 | DOI: 10.17221/467/2018-PSE To investigate the effects of different sources of organic matter on soil biochemical properties and crop productivity and to find the best substitute for cow manure in the fields, a field experiment was carried out in a wheat-maize cropping system during 2012-2015. Three types of fertilizer applications, including a mineral fertilizer (CK), straw (S) and biogas slurry (B) were compared with cow manure (M) under an equal dose of nitrogen. In the 0-20 cm soil layer, the soil total nitrogen, microbial biomass nitrogen and carbon content of the M treatment was the highest, and the total organic carbon equivalent ratio of M decreased by 28.60% respectively, relative to S. Compared with CK, S and B, the urease activity equivalent ratio in the M treatment increased by 52, 12 and 21%, and the invertase activity equivalent ratio increased by 21, 20 and 26%, respectively. There were no significant differences in the hydrogen peroxidase activity among the four treatments. The annual crop yield and water use efficiency of the M treatment was significantly higher than other treatments, followed by S, B and CK. Our findings indicated that straw returning was the best substitute for cow manure. |
Effect of grazing intensity and dung on herbage and soil nutrientsOriginal PaperKlára Pavlù, Teowdroes Kassahun, Chukwudi Nwaogu, Lenka Pavlù, Jan Gaisler, Petr Homolka, Vilém PavlùPlant Soil Environ., 2019, 65(7):343-348 | DOI: 10.17221/177/2019-PSE Dung deposited by grazing animals is a key driver affecting sward structure and nutrient cycling in pastures. We tested herbage and soil properties in three types of tall sward-height patches (> 10 cm): (i) patches with dung under intensive grazing; (ii) patches with dung under extensive grazing; and (iii) patches with no dung under extensive grazing. These patches were compared with grazed swards under intensive and extensive grazing. Analyses indicated no significant effect of different types of patches on plant available nutrients. Herbage nutrient concentrations from the different types of patches differed significantly. The highest concentrations of nitrogen (30.65 g/kg), phosphorus (4.51 g/kg) and potassium (22.06 g/kg) in the herbage dry matter were in the tall patches with dung presence under intensive grazing regime because of nutrients from dung utilized for sward regrowth. Regardless of dung presence, similar herbage nutrient concentrations were revealed in non-grazed tall sward-height patches in extensive grazing regime. The presence of dung did not have any effect on the plant available nutrients in any type of patches, therefore we suppose that non-utilized nutrients were probably leached, volatilised or transformed into unavailable forms and thus soil nutrient enrichment was low. |
Effect of low temperature in the first development stage for five red raspberry genotypesOriginal PaperElida Contreras, Javiera Grez, José A. Alcalde, Davide Neri, Marina GambardellaHort. Sci. (Prague), 2019, 46(1):9-16 | DOI: 10.17221/9/2018-HORTSCI In raspberry, the expression of the primocane fruiting trait is influenced by the environment. Although there are several factors that influence the expression of this character, it is well known that low temperatures that occur during the growth season of the primocane, are important and affect the flowering. In this study, plants in their early stages of development were exposed to low temperatures (2°C) for one month, in a dark cold chamber. The following genotypes primocane and floricane were used: 'UC103', 'Autumn Bliss', 'Heritage', 'Meeker' and 'Tulameen'. Flowering and growth were recorded until the end of the season and the morphology of the meristem was characterized in this moment. Interaction between cold and genotype was detected in all parameters studied. In 'Heritage', a slight primocane, growth and flowering were favoured by exposure to cold. Thereby, low temperature affects flowering, but this effect depends on primocane fruiting degree of each genotype, slight primocane the cold favored flowering and growth. However, strongly primocane the cold had no effect on flowering and growth. |
Phases to the transformation of agriculture in Central Europe - Selected processes and their resultsOriginal PaperJerzy BAÑSKIAgric. Econ. - Czech, 2018, 64(12):546-553 | DOI: 10.17221/86/2018-AGRICECON The fall of the communist system in Central Europe was followed by dynamic social and economic change that also had its clear impact on the food sector. One of the key factors shaping the contemporary condition of the agricultural sector in region has been change of ownership, with the collapse of the nationalised sector and restitution of property to former owners. The work presented here considers the main directions of changes and assessment of selected economic processes ongoing in the farming sector over the last quarter-century throughout the region under consideration. This analysis may be further broken down in relation to the three suggested phases of change, i.e. transformation, integration and polarisation. The work took in five countries of the former Eastern Bloc, i.e. the Czech Republic, Hungary, Poland, Romania and Slovakia. |
Stable isotope labelling of Ceratitis capitataOriginal PaperHasan Al-Khshemawee, Manjree Agarwal, Yonglin RenPlant Protect. Sci., 2019, 55(1):54-60 | DOI: 10.17221/13/2018-PPS The use of stable isotopes to label an insect species, the Mediterranean fruit fly Ceratitis capitata (Diptera: Tephidae) (medfly) was investigated. Labelling allows mating and life history characteristics to be investigated experimentally. 13C6-glucose was incorporated into the diet of medflies at various stages of development by adding it to larval media or providing adults with sugar water. Data was collected from egg hatching until the death of adults. The results show that stable isotopes successfully labelled medflies in laboratory conditions. There were significant differences between labelled and unlabelled treatments in terms of eggs hatching rates, larval development, pupae emergence, adult survival, and mating behaviour. Labelling during larval development, and combined labelling at the larval and adult stages, resulted in detectable values. Labelling in the larval stage had no effect on mating behaviour, but that in the adult stage did. This study demonstrates that it is possible to label adult medflies and to detect the label after mating. |
Maize production and field CO2 emission under different straw return rates in Northeast ChinaOriginal PaperChunming Jiang, Wantai YuPlant Soil Environ., 2019, 65(4):198-204 | DOI: 10.17221/564/2018-PSE In order to understand and clarify the impacts of straw return on maize production and field CO2 emission in Northeast China, the most important agricultural base of the nation, a field experiment was conducted in 2012-2015, including no straw return (CK), straw amendment at 4000 kg/ha (S4), and at 8000 kg/ha (S8). The average grain yield was found significantly promoted by the two straw treatments, with comparably increased magnitudes of 11.0% and 12.8% for S4 and S8, respectively, and the benefits were gradually enlarged with increasing experimental duration. Although straw return tends to reduce slightly the harvest index, it was detected that it exerted significantly positive impacts on nitrogen harvest index. These results implied that added straw could lead to raising grain yield and enhancing nitrogen use efficiency simultaneously. In 2015, our monitoring showed that CO2 emission was elevated with intensified use of straw, and S4 and S8 decreased carbon emission efficiency by 7.3% and 13.6%, respectively. However, there was no statistical difference between S4 and CK. Overall, straw addition at the rate of 4000 kg/ha accompanied with inorganic fertilizer was recommended to be adopted in Northeast China, which was considered as a sustainable and relatively environment-friendly agricultural technique during maize production. |
Multiple-factor associative effects of peanut shell combined with alfalfa and concentrate determined by in vitro gas production methodOriginal PaperJiu Yuan, Xinjie WanCzech J. Anim. Sci., 2019, 64(8):352-360 | DOI: 10.17221/94/2019-CJAS The associative effects (AE) between concentrate (C), peanut shell (P) and alfalfa (A) were investigated by means of an automated gas production (GP) system. The C, P and A were incubated alone or as 40 : 60 : 0, 40 : 45 : 15, 40 : 30 : 30, 40 : 15 : 45, 40 : 0 : 60 and 30 : 70 : 0, 30 : 55 : 15, 30 : 40 : 30, 30 : 25 : 45, 30 : 10 : 60, 30 : 0 : 70 mixtures where the C : roughage (R) ratios were 40 : 60 and 30 : 70. Samples (0.2000 ± 0.0010 g) of single feeds or mixtures were incubated for 96 h in individual bottles (100 ml) with 30 ml of buffered rumen fluid. GP parameters were analysed using a single exponential equation. After incubation, the residues were used to determine pH, dry matter digestibility (DMD), organic matter digestibility (OMD), volatile fatty acids (VFA) and ammonia nitrogen (NH3-N) of the incubation fluid, and their single factor AE indices (SFAEI) and multiple-factors AE indices (MFAEI) were determined. The results showed that group of 30 peanut shell had higher SFAEI of GP48 h, DMD, OMD and total volatile fatty acids (p < 0.05) and MFAEI (p < 0.05) than groups 60, 45 and 0 when C : R was 40 : 60. The group of 10 peanut shell showed higher SFAEI of GP48 h, DMD and OMD (p < 0.05) than groups 70, 55 and 40 and MFAEI (p < 0.01) when C : R was 30 : 70. It is concluded that optimal SFAEI and MFAEI were obtained when the C : P : A ratios were 40 : 30 : 30 and 30 : 10 : 60. |
Present restrictions of sewage sludge application in agriculture within the European UnionReviewHana Hudcová, Jan Vymazal, Milo¹ Rozko¹nýSoil & Water Res., 2019, 14(2):104-120 | DOI: 10.17221/36/2018-SWR The use of sludge in agriculture within the European Union (EU) is currently regulated only by the limits of heavy metals (Cd, Cu, Hg, Ni, Pb and Zn) listed in Council Directive 86/278/EEC. This document is now more than 30 years old. Several European countries have introduced more stringent requirements in comparison with the directive, and have adopted limits for concentrations of other heavy metals, synthetic organic compounds and microbial contamination. The paper provides an overview of the current limits of these substances in sewage sludge and concentration limits of heavy metals in soil intended for sludge application, together with applicable laws and regulations in European Union countries. There is a need to update these regulations taking into account the current risks associated with the application of sludge to agricultural land, with the possibility of using ecotoxicological tests to assess the risks. A wide range of technologies for sewage sludge processing is used in EU countries. The predominant choice is a direct application in agriculture followed by composting. The use of sewage sludge in agriculture in 2014 and 2015 in 13 EU countries that provided data amounted to 22.6% (2014) and 22.1% (2015) of produced sludge and 23.3% (2014) and 23.1% (2015) of sludge disposed. It is also highly variable within EU countries ranging between zero (Malta, Slovenia, Slovakia) and 80% (Ireland). Over 50% of sewage sludge is used in agriculture in Bulgaria according to 2015 data. |
Effect of fungal degradation on physicochemical properties of exploited stumps of oriental beech over a 25-year felling period and the obtained Kraft pulp propertiesOriginal PaperYasin Rahmati, Kazem Nourmohammadi, Reza Naghdi, Davoud KartoolinejadJ. For. Sci., 2019, 65(3):96-105 | DOI: 10.17221/93/2018-JFS Oriental beech (Fagus orientalis Lipsky) is the most important and valuable industrial wood species in the Hyrcanian forests in the north of Iran mainly used for furniture, veneer, composite, and papermaking industries. The present research was conducted in 2014 aimed at investigating the physicochemical changes of the felled oriental beech stumps over a 2-25 year period, and likewise the feasibility of using the given stumps as an alternative resource for wood pulp production. To do so, the effects of in-situ decay of beech stumps on their physical (wet and dry weights of wood, wet apparent density, and dry apparent density) and chemical (cellulose, hemicellulose, lignin, extractives, and total mass of carbohydrates) properties over a 2-25 year felling period were studied. The effects of the given decay period were also studied on the obtained Kraft pulp yield and Kappa number. The results indicate that the wet and dry apparent densities as well as the wet and dry weights of the wood samples decreased over the study period. Also, the results show that approximately 30% of the total mass of carbohydrates was degraded by the ambient fungi over the initial two years of felling, whereas the same property was reduced by 60% after 25 years. The Kraft pulp yields obtained from 2- and 25-year decayed stumps were 22.5% and 8.4%, respectively. The fungal degradation of wood chemical compounds could considerably reduce pulp yield and Kappa number by 62.8% and 74.2%, respectively. The results of a stepwise multivariate regression model evidence that cellulose not only affects the Kappa number but also owns a greater share (vs. lignin) in modelling the Kappa number. This reveals that the intensity of cellulose degradation, due to fungal exposure, is significantly higher than that of the other components of beech stumps in the studied forest area. |
Risk in agriculture: An overview of the theoretical insights and recent development trends during last decade - A reviewReviewLina NovickytéAgric. Econ. - Czech, 2019, 65(9):435-444 | DOI: 10.17221/11/2019-AGRICECON The main purpose of this paper is to provide a detailed overview of the theoretical insights and recent development trends on risk in agriculture. It focuses on the synthesis and analysis of the research studies published over the period from 2008 through 2018 and aims to identify major findings obtained over the recent decade and determine the areas for future research. This paper reviews a total of 397 unique publications retrieved from the international journals accessible in the Web of Science database. Based on different criteria deployed by the scientometric analysis, the selected articles have been reviewed and classified. The bibliometric analysis includes the citation volumes, authors, names of journals, research areas, affiliations, and contributing countries. The network analysis includes the examination of keywords. This article provides an opportunity for scholars, practitioners, and policy-makers to understand and manage risk in agriculture and at the same time presents a roadmap for future research in this field. |
Prevalence and intensity of Sarcocystis spp. infection in animals slaughtered for food in LithuaniaOriginal PaperVytautas Januskevicius, Grazina Januskeviciene, Petras Prakas, Dalius Butkauskas, Saulius PetkeviciusVet Med - Czech, 2019, 64(4):149-157 | DOI: 10.17221/151/2017-VETMED The exact prevalence of Sarcocystis spp. infection in animals slaughtered for food is unknown in Lithuania. Therefore, the present study was initiated to evaluate Sarcocystis spp. infection in the carcasses of cattle (n = 206), sheep (n = 61), pigs (n = 73) and horses (n = 72) raised in Lithuania for food. The prevalence and intensity of Sarcocystis spp. infection were assessed under light microscopy by analysing 1 g of stained and squashed muscle samples. All the investigated muscle types (oesophagus, diaphragm, heart, neck, jaw, back, leg and tongue) were found to have been infected with microcysts rather than with macrocysts. A high prevalence of infection was established in cattle (44.9-98.1%) and sheep (100%), whereas the prevalence of this infection in pigs (30.1-50.0%) and horses (34.7-63.9%) was considered to be moderate. Significant differences in the infection prevalence were detected in the majority of muscle groups of cattle and in some muscle groups of pigs and horses. Similarly, significant differences in the median (Md) intensity of infection were observed in the majority of the muscle groups of cattle (Md = 4-29) and sheep (Md = 21-73) and only in some muscle groups of pigs (Md = 4.5-16) and horses (Md = 1-3). Cases of intense infection (> 40 cysts in a sample) were relatively often detected in sheep (44.9%) and cattle (19.1%), and rarely in pigs (3.7%). Hence, based on the varying rates of infection in the examined samples, the infection was identified as being intense in sheep and cattle, moderate in pigs and low in horses. |
A case of diquat poisoning in pigsCase ReportZ Siroka, M Svoboda, Z Svobodova, I NaglVet Med - Czech, 2019, 64(11):505-511 | DOI: 10.17221/87/2019-VETMED Diquat is a bipyridyl compound which belongs to the group of herbicides. Its activity is based on the liberation of the superoxide anion radical and, subsequently, hydrogen peroxide, leading to tissue destruction by oxidative stress. Acute poisoning is associated with high mortality within several hours to a few days. The reported case of poisoning occurred on a commercial farm. The fattening pigs of the Landrace and Large White breeds were affected. The pigs were kept on a deep litter. Reglone (active ingredient diquat dibromide, 200 g/l) was used on the farm fields to desiccate the clover crop. The dry clover straw was harvested and stored for approximately a month and then used as a litter. In total, 50 pigs were affected. The onset of the poisoning was very fast. Within eight hours after the litter administration, 20 animals died. The only clinical sign seen was severe haemorrhagic dermatitis. The pathological examination revealed acute superficial haemorrhagic dermatitis on the belly, the snout and the ears of the affected pigs. Hyperaemia of the tonsils, pharynx and oesophagus was diagnosed, as well as a pronounced hyperaemia of the stomach fundus. In the distal part of the trachea, there was a dense, white foam. The lungs were congested, with focal emphysema. The liver was slightly hyperaemic. The histological examination revealed a massive haemostasis in liver and diffuse acute polymorphonuclear hepatitis. The other organs were without changes. The examination revealed acute poisoning caused by the large body surface areas contacting with a toxic substance. The pigs that survived were immediately removed to a non-contaminated area. The changes on their skin were not so extensive compared to the dead ones. Within 5-7 days after the exposure to diquat, the skin lesions healed. |
The response of winter oilseed rape to diverse foliar fertilizationOriginal PaperWac³aw Jarecki, Jan Buczek, Dorota Bobrecka-JamroPlant Soil Environ., 2019, 65(3):125-130 | DOI: 10.17221/5/2019-PSE In this experiment, the response of winter oilseed rape cv. SY Alister F1 to diverse foliar fertilization was evaluated. Foliar fertilization with the preparation Insol 5 was applied at the following dates: control (without a foliar fertilizer); autumn; autumn + spring; autumn + twice spring; spring and twice spring. Each variant in which autumn foliar fertilization was carried out contributed to a significant increase in plant density before harvest. In turn, each variant with spring foliar fertilization significantly increased the number of pods per plant compared to the control. Variants with autumn + spring, autumn + twice-spring, and twice-spring foliar fertilization influenced the increase in the soil-plant analysis development index (SPAD), thousand seed weight and protein and fat yield. The leaf area index was the highest after foliar fertilization applied in autumn + in spring or autumn + twice in spring. Foliar fertilization affected a significant increase in seed yield compared to the control. The content of protein and magnesium in seeds was the highest after the fertilizer application in autumn + twice in spring or twice in spring. |
The straw as mulch and compost as a tool for mitigation of drought impacts in the potatoes cultivationOriginal PaperMartin Král, Petr Dvoøák, Ivana CapouchováPlant Soil Environ., 2019, 65(11):530-535 | DOI: 10.17221/493/2019-PSE The frequent occurrence of years with extreme drought leads to the investigation of measures for mitigation of their impacts. The efficiency of organic mulch materials - straw and compost application as the preservation of potato production in drought conditions were verified in this study. Three mulching treatments were verified during the three experimental years (2016-2018) in an exact field trial with potatoes cv. Dicolora. Wheat straw mulch in the rate of 2.5 t/ha (SM1) and 4.5 t/ha (SM2), compost in the rate of 20 t/ha (CM), and control block without any treatments (C) were used. The yield of marketable tubers (tuber over 40 mm) showed a significant increase by 21.2% at the straw mulch treatment (SM2) in comparison with control. As for the straw mulch (SM1) and compost mulch (CM), tubers yields increased by 12.8% and 10.1%, respectively, compared to control. |
In-package moisture supports quality maintenance of white asparagusOriginal PaperBrueckner BernhardHort. Sci. (Prague), 2019, 46(3):153-161 | DOI: 10.17221/248/2017-HORTSCI White asparagus is a highly appreciated, high-value crop with a distinguished economic relevance among vegetables. Freshly harvested asparagus is available only during a short part of the year and the demand varies. The produce is perishable and only proper handling can ensure its quality after a reasonable shelf life. In this study, we investigated a new method to reduce one of the most important reasons for quality decline: fresh matter losses. The potential benefits or disadvantages of moist asparagus packaging for unpeeled white asparagus (cv. 'Gijnlim') was tested. We used polythene sleeves or bags, lined with cellulose fleece to hold added water for moisturizing. 500 g bunches of spears were filled in the bags. Spears were partly covered by the sleeves or totally covered by the bags. All spears were stored for 3 to 11 days at the temperature of 2°C, 8°C and a combination of 2°C/22°C.The last temperatures were to simulate retail conditions. In wet bags spear fresh weight increased, losses in bags with dry fleece were low. Maintaining of fresh weight in wet bags coincided significantly with higher bending firmness, and lower shear force, which points to less fibrousness. Wet storage also reduced the incidence of dried cut surfaces but promoted the incidence of lengthwise fractures and, in combination with higher temperature, grey-brown discolouration and colour saturation. Wet packaging may be beneficial primarily under low temperature and low air humidity storage conditions. |
Bankability of a public private partnership in agricultural sector: A project in Sub Saharan AfricaOriginal PaperDonato Morea, Marino BalzariniAgric. Econ. - Czech, 2019, 65(5):212-222 | DOI: 10.17221/258/2018-AGRICECON A public private partnership can be an effective approach to deal the projects with modern agricultural development in Sub Saharan Africa. A former financial analysis of a development project, carried out by the authors, showed that public and private partners can effectively join in a mutually satisfactory venture capital. The same project is now complemented with a bankability study, considering lenders options, equity allocation, collaterals and likely applicable interest rates, available cash flow and sustainable debt service repayment to provide a through financing scenario for each partner's perspective assessing the relevant Debt Service and Loan Life Cover Ratios. Cash flow and interest rates fluctuation impacts are eventually investigated with a sensitivity analysis to prove the robustness of the proposed scenario. |
Chemical composition, safety and quality attributes of traditional cottage sausageFood Chemistry and SafetyKrzysztof Surówka, Ireneusz Maciejaszek, Kamila Walczak, Maria Walczycka, Barbara Surówka, Magdalena Rzepka, Joanna Bana¶Czech J. Food Sci., 2019, 37(5):325-331 | DOI: 10.17221/135/2019-CJFS The characteristic features of traditional cottage sausage were analysed. In addition, the extent to which manufacturers create product diversity on the market was investigated, along with potential health risks of the product to consumers. The samples had high overall sensory scores. The average level of fat slightly exceeded 28%, cholesterol content was in the range of 435.4-1220.3 mg/kg and salt content was 1.53-2.77%. Some manufacturers do not cure their product, but about 20% of them apply nitrites above the level of 150 mg/kg. Due to their relatively high pH level (5.76-6.60) and water activity (0.95-0.98), Polish cottage sausage can be a medium which encourages the growth of microorganisms; however, pathogenic bacteria were not found. Histamine was detected in only 42% of the samples, at the low level of 2.6 to 34.2 mg/kg. Principal Component Analysis (PCA) was applied and the dominant variables were specified for particular PCs. |
Effect of 2,4,6-trimercaptotriazine, trisodium salt, nonahydrate on heavy metals bioavailability in soils and accumulation in tobaccoOriginal PaperYansong Xiao, Qiulong Hu, Hongguang Li, Quan Zhong, Wei-ai Zeng, Songsong Gu, Hailin Cai, Lin TanPlant Soil Environ., 2019, 65(1):9-14 | DOI: 10.17221/512/2018-PSE Pot experiments were carried out to study the effects of a novel stabilizer of 2,4,6-trimercaptotriazine, trisodium salt, nonahydrate (TMT) on the bioavailability of heavy metals (Cu, Zn, As, Cd and Pb) in soils and heavy metals accumulation in tobacco. The results showed the optimal TMT dosage 200 mL/kg could effectively reduce the bioavailability of heavy metals in soils, and the bioavailability of Cu, Zn, As, Cd and Pb in soils was reduced simultaneously by up to 73.1, 63.2, 48.0, 68.9 and 57.2%, respectively. Application of TMT could significantly decrease Cu, Zn, As, Cd and Pb contents of all parts of tobacco. Furthermore, the contents of available Cu, Zn, As, Cd and Pb in soils were significantly positively correlated with Cu, Zn, As, Cd and Pb contents in upper, middle and lower leaves and stems of tobacco. There were no significant differences among plant height, number of leaves, stem girth, length and width of maximum leaves of tobacco under TMT treatments and that under control (P < 0.05), which showed that the TMT did not promote and inhibit the growth of tobacco. |
Changes in decision making and cooperation among forest owners: the Lithuanian caseOriginal PaperPivoriunas Aidas, Girdziu¹as SigitasJ. For. Sci., 2019, 65(11):450-459 | DOI: 10.17221/106/2019-JFS Understanding of the basic determinants of cooperation among private forest owners is of crucial importance to forest owners, private forest owners' cooperatives and other key players in the forest sector. This topic concerns complementary empirical and theoretical studies from the fields of economics and social studies. A recent study shows that private forest owners differ in their attitudes towards forest management and processes of cooperation in terms of the time perspective and, correspondingly, make different decisions in various situations related to forest management. Based on the data from two surveys, this paper shows how private forest owners' views of forest management in Lithuania have developed over the last thirteen years and finds some basic socio-economic aspects that drive cooperation among private forest owners for joint forest management. |
Variety in local development strategies and employment: LEADER programme in AndalusiaOriginal PaperMercedes Rodriguez, Luis Miguel Sanchez, Eugenio Cejudo, Jose Antonio CamachoAgric. Econ. - Czech, 2019, 65(1):43-50 | DOI: 10.17221/106/2018-AGRICECON For the period 2007-2013 LEADER became the fourth axis of rural development policy. One of the main characteristics of LEADER is that it adopts a bottom-up approach. Local Action Groups (LAGs) have to define and implement area-based local development strategies (LDSs). In this paper, we examine the relationship between variety in the LDSs implemented by LAGs and employment safeguarding over the programming period 2007-2013 in Andalusia, the most populated region of Spain. Firstly, we construct several indicators to capture differences in the number of projects carried out, the grants awarded, the investments made and the safeguarded employment. Secondly, we carry out an exploratory factor analysis. We use cluster analysis to classify LAGs applying similar LDSs. The results obtained show that there is no ideal strategy for employment safeguarding and that spending high amounts of money in a few numbers of projects does not guarantee success. Thus, most LAGs do not show any clear specialisation pattern but obtain moderate results in terms of employment safeguarding. This supports the idea that LAGs need to have sufficient flexibility to find a balance among the different objectives of the rural development policy and to translate this balance into the funding of projects. |
First record of Corythucha arcuata in Slovakia - Short CommunicationShort CommunicationMilan Zúbrik, Andrej Gubka, Slavomír Rell, Andrej Kunca, Jozef Vakula, Juraj Galko, Christo Nikolov, Roman LeontovyèPlant Protect. Sci., 2019, 55(2):129-133 | DOI: 10.17221/124/2018-PPS In June 2018, the presence of one adult specimen and one egg cluster of the North-American oak lace bug Corythucha arcuata were recorded near the village of Mu¾la, close to the Danube River, in southern Slovakia. They were found on leaves of Quercus cerris growing in a mixed stand. In August 2018, other specimens (nymphs and adults) were observed on Quercus robur leaves, near Èièarovce, in eastern Slovakia. This is the first record of C. arcuata in our country. The oak lace bug probably reached us while invading from Hungary, where heavy infestation is reported from several parts of the country. |
Seroprevalence of Brucella canis in dogs and at-risk humans in JordanOriginal PaperMusa Alshehabat, Mohammad Obaidat, Wail HayajnehVet Med - Czech, 2019, 64(6):260-265 | DOI: 10.17221/67/2018-VETMED Brucella canis infection is a neglected zoonotic disease and its seroprevalence in dogs and at-risk humans has not been previously studied in several countries including Jordan. The main aim of this study was to determine the seroprevalence and identify risk factors of B. canis infection in police, breeding and stray dogs and in at-risk humans in Jordan. A total of 169 sera samples from apparently healthy dogs and 185 samples from apparently healthy people (85 from dog handlers and 100 from the general population) were tested in the study. Antibodies against B. canis were tested using the canine D-Tec® CB Rapid Slide Agglutination Test (RSAT) kit with secondary 2-mercaptoethanol (ME-RSAT). Overall, 8.3% of the dog sera samples tested positive to antibodies against B. canis, and 37.8% of stray dogs tested positive. Seroprevalence was higher in male dogs than in females. Furthermore, none of the tested human samples was positive to antibodies against B. canis. There was a significant association between seropositivity and the type of dog. The study reports preliminary findings that suggest the presence of B. canis among stray dogs in Jordan. Thus, preventive measures should be taken to control the transmission of this pathogen from stray dogs to other dogs and humans as well. |
The methods analysis of hazards and product defects in food processingFood Analysis, Food Quality and NutritionKrzysztof PrzystupaCzech J. Food Sci., 2019, 37(1):44-50 | DOI: 10.17221/44/2018-CJFS The paper pertains to the issue of quality assurance methods. Particular emphasis is placed upon the examination of hazards and possible product defects in food processing. At present, Polish regulations oblige any food processing entity to implement HACCP system. The system is perceived as a universal vaccine preventing the emergence of possible hazards or reducing the risk to an acceptable level. As far as defects are concerned, these are either disregarded altogether or do not occur at all. Meanwhile, the practice proves the case is not so. The research aspect of the paper revolves around an attempt to transplant solutions primarily applied in the automotive sector onto food processing industry. The practical aspect of the paper is manifested in the analysis of causes behind defects and hazards conducted on the basis of bakery industry. Potential hazards and product defects emerging from the process were identified in the course of the study. In addition, in order to eliminate these, their level was established with the application of various methods. |
Impact of maize growth on N2O emission from farmland soilOriginal PaperLiang Wang, Yan Meng, Guoqing Chen, Xiaoyu Liu, Lan Wang, Yuhai ChenPlant Soil Environ., 2019, 65(4):218-224 | DOI: 10.17221/774/2018-PSE Crop growth is a key factor that effects nitrous oxide (N2O) emission in farmland soil. Clarification and quantification of the impact of maize growth on N2O emission are important to guide maize planting and patterns, which is also useful for building model to simulate N2O emission in an agroecosystem. In this study, we carried out a three-year (2013-2015) field experiment to evaluate the contribution of maize growth on N2O emission using a split-plot design. The factors included planting versus not planting maize, and four rates of nitrogen (N) application (0, 150, 300, 450 kg N/ha). Our results showed the impacts of maize growth on N2O emission decreased linearly with the growth of maize from the 43rd day after sowing (y = -1.07x + 26.85, R2 = 0.95). Nitrogen fertilizer application can reduce the impacts of maize growth on N2O emission. The impact of maize growth on soil NH4+-N and NO3--N are similar to N2O emission, and they have a strong correlation. We concluded that maize growth reduces soil N2O emission but N application can exert an antagonistic effect, and the impact of maize growth on soil NH4+-N and NO3--N largely determines the impacts of maize growth on N2O emission. |
