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Oligonucleotide microarray methodology for taxonomic and functional monitoringof microbial community compositionM. Kyselková, J. Kopecký, M. Ságová-Marečková, G.L. Grundmann, Y. Moënne-LoccozPlant Soil Environ., 2009, 55(9):379-388 | DOI: 10.17221/140/2009-PSE Microarray analysis is a cultivation-independent, high-throughput technology that can be used for direct and simultaneous identification of microorganisms in complex environmental samples. This review summarizes current methodologies for oligonucleotide microarrays used in microbial ecology. It deals with probe design, microarray manufacturing, sample preparation and labeling, and data handling, as well as with the key features of microarray analysis such as specificity, sensitivity and quantification potential. Microarray analysis has been validated as an effective approach to describe the composition and dynamics of taxonomic and functional microbial communities, in environments including soil, compost, sediment, air or humans. It is now part of the technical arsenal available to address key issues in microbial community ecology, ranging from biogeography to ecosystem functioning. |
Assessment of sulphur demand of crops under permanent fertilization experimentOriginal PaperW. Szulc, B. Rutkowska, T. Sosulski, E. Szara, W. StępieńPlant Soil Environ., 2014, 60(3):135-140 | DOI: 10.17221/913/2013-PSE The aim of the study was to determine plant needs with regard to sulphur fertilization based on the assessments of sulphur in the soil profile carried out in the early spring. The study was founded on the continuous fertilization experiment established in 1985 at the Experimental Station of the Faculty of Agriculture and Biology, Warsaw University of Life Sciences-SGGW, which is located in Skierniewice. Soil samples were collected in the years 2009-2011 in the early spring (February/March) at low soil temperatures. The samples were taken at three soil depths: 0-30, 30-60, 60-90 cm. The content of sulfate sulphur was assessed in fresh soil samples after extraction in 0.01 mol/L CaCl2. The plants cultivated during the study were spring barley and yellow lupine. The amount of sulphur in soil profile was too small and not sufficient to fulfill yellow lupine nutritional needs, thus could be a limiting factor for successful yield production. Regardless the fertilizer treatment, the amount of sulfate sulphur found in 0-60 cm soil layer fully covered nutritional needs of spring barley. |
Yield trends and nutrient budgeting under a long-term (28 years) nutrient management in rice-wheat cropping system under subtropical climatic conditionOriginal PaperA. Das, R.P. Sharma, N. Chattopadhyaya, R. RakshitPlant Soil Environ., 2014, 60(8):351-357 | DOI: 10.17221/46/2014-PSE We measured the long-term (28 years) sustainability of rice-wheat cropping system under integrated nutrient management practices emphasizing the trends in grain yields, sustainable yield index (SYI) and nutrient budgeting. The data of long-term experiment revealed that grain yield of both rice and wheat declined under control and sub-optimal fertilizer inputs (50% or 75% recommended fertilizer NPK). Negative yield trend (slope) was observed in control plots for rice (-0.0296) and wheat (-0.0070); whereas positive yield trend was observed under treatments receiving organic supplements. The SYI values indicate that rice yields are more sustainable than wheat. Data on apparent nutrient balance showed a deficit of N (-42.2 kg/ha/year), P (-9.1 kg/ha/year) and K (-52.2 kg/ha/year) under control plots. Surprisingly, there was net depletion of K under the organic supplemented plots. Correlation study revealed that apparent balance of K was negatively correlated with SYI (r = -0.921 for rice; r = -0.914 for wheat) and yield slope (r = -0.870 for rice; r = -0.896 for wheat). If the trend of K imbalance is not reversed, the potential to improve N and P fertilizer use efficiency and crop yields will be limited. |
Imputation accuracy of bovine spongiform encephalopathy-associated PRNP indel polymorphisms from middle-density SNPs arraysOriginal PaperA. Gurgul, K. Sieńko, K. Żukowski, K. Pawlina, M. Bugno-PoniewierskaCzech J. Anim. Sci., 2014, 59(5):244-249 | DOI: 10.17221/7405-CJAS Statistical methods of imputation allow predicting genotypes of markers (which were not genotyped in the whole population) based on known linkage disequilibrium relationships between the flanking polymorphisms and the information obtained from reference datasets used as a pattern. In this study we attempted to predict genotypes of two bovine spongiform encephalopathy (BSE) susceptibility associated indel polymorphisms located in the promoter region of PRNP gene relying on the data obtained from middle density SNPs arrays in a sample of the population of Holstein cattle. The two SNPs panels spanning PRNP locus were tested in terms of imputation efficiency. Both panels gave satisfactory imputation results showing high accuracy and high probabilities of imputed genotypes. Our results suggest that the approach applied can be used to evaluate the frequency of the disease associated polymorphisms in large populations of animals genotyped with whole-genome SNPs panels based on a limited-size reference population and small financial outlays. |
The clustering of agricultural products and determining important countries for these clusters by the factor analysisOriginal PaperSabri ER, Ahmet ÖZÇELIKAgric. Econ. - Czech, 2014, 60(11):503-508 | DOI: 10.17221/24/2014-AGRICECON In the study, some important herbal agricultural products with respect to their production have been clustered, in addition to determining the most important or the best countries in terms of the production of certain herbal agricultural products by using the factor analysis. The FAO data set has been used in obtaining production of 30 agricultural products in 86 countries. 8 factors have been achieved by considering the Eigen values the numbers of which are greater than one. Each factor contains certain herbal agricultural products. First factor explains 40.51% of the total variation whilst the last factor explains only 3.89% of the total variability. 10 best countries for each factor have been revealed. |
Modelling of forest road sediment in the northern forest of Iran (Lomir Watershed)Original PaperP. Dalir, R. Naghdi, V. GholamiJ. For. Sci., 2014, 60(3):109-114 | DOI: 10.17221/91/2013-JFS Forest roads are the most important ways of access; nevertheless, they are the main source of sediment production. The delivered sediment by forest roads causes environmental problems and pollution of water resources. This study has been done to present a model for estimating the sediment yield of forest road using a multiple regression analysis on the Caspian southern coasts (north of Iran, Lomir watershed). For this purpose, 45 wood dams were created and their sediment volume (dependent variable) was measured. The following independent variables were estimated: road length, road width, road slope, vegetation cover, height of cut slope and road age. Then, a regression analysis was done using SPSS software to present a linear model. In the next step, the accuracy and capability of the presented model were considered and validated using the model for estimating the wood dam sediment. The results showed that road length and road width have significant effects in sediment generation. Also, the presented model can estimate the forest road sediment in northern Iran. |
Effect of temperature on the evolution of colour during the maceration of fruits in liquorOriginal PaperIsabel PAZ, Ascensión FERNÁNDEZ, Carmen MATÍAS, Gabriel PINTOCzech J. Food Sci., 2014, 32(1):90-95 | DOI: 10.17221/207/2013-CJFS The effect of temperature on the kinetics of pigment extraction during the maceration of different fruits (raspberry, blackberry, and cranberry) into a commercially available hard spirit (orujo, with 42% v/v ethanol) was evaluated. The analytical method used was UV-Vis spectrophotometry. The initial extraction rate showed an Arrhenius-type dependence with apparent energy activation of 28.8, 69.8, and 55.6 kJ/mol, respectively. Furthermore, a study about the evolution of the colour (from colourless to reddish colour appearance) during the soaking process was done by calculating the CIE tristimulus values (X, Y, Z) for illuminant C, until reaching the apparent stabilisation of colour, which occurs after about two to four weeks for the studied temperatures (5, 23, and 40°C). Studies about the evolution of colour in the soaking process of this kind of fruit liquors can lead to a better understanding of this process, and thus to a better control over the mechanisms underlying it. |
Fish kill caused by aluminium and iron contamination in a natural pond used for fish rearing: a case reportCase ReportA. Slaninova, J. Machova, Z. SvobodovaVet Med - Czech, 2014, 59(11):573-581 | DOI: 10.17221/7821-VETMED Contamination of Pansky Pond, in March 2013, with 119 mg/l aluminium, and 87 mg/l iron by acidic (pH 3.17) inflow from a nearby quarry caused fish die-off, while exhibiting symptoms of suffocation. Transformation of soluble forms of aluminium and iron into insoluble forms occurred on fish gill where the content of aluminium and iron was 100-fold and 12-fold, respectively, that found in control fish in an unaffected pond. In addition to insoluble aluminium and iron, gills showed presence of iron bacteria. Histopathology was characterised by expression of reactive processes and regressive alterations resulting in gill tissue necrosis. Impairment of the excretory function of gills was reflected in significantly (P < 0.01) higher concentrations of ammonia in the blood plasma of exposed fish compared to the control. Damage to parenchymatous tissues (kidney, liver, spleen) of the exposed fish was manifested as dystrophic alterations, higher aluminium and iron content, and enhanced activity of transaminases in blood plasma compared to the control. |
Climate change, air pollution and global challenges. Understanding and perspectives from forest researchReviewR. Matyssek, N. Clarke, P. Cudlin, T.N. Mikkelsen, J.P. Tuovinen, G. Wieser, E. PaolettiJ. For. Sci., 2014, 60(8):351-352 | DOI: 10.17221/73/2014-JFS Climate change, air pollution and global challenges. Understanding and perspectives from forest research R. Matyssek, N. Clarke, P. Cudlin, T.N. Mikkelsen, J.P. Tuovinen, G. Wieser, E. Paoletti Developments in Environmental Science 13. Elsevier Ltd., Oxford, 2013 622 pages, ISBN 978-0-08-098349-3. € 142.31. |
Evaluation of wheat/non-traditional flour compositeOriginal PaperTa»ana Hofmanová, Marie Hruąková, Ivan ©vecCzech J. Food Sci., 2014, 32(3):288-295 | DOI: 10.17221/311/2013-CJFS We examine the nutritional effect of selected non-traditional grain samples added into wheat flour. In a form of flour, amaranth, quinoa, lupine, 5 hemp types, 2 teff types and 2 chia types were used for wheat flour substitution on a low and high level. Samples with amaranth and lupine flour showed the best improvement in terms of protein content (in the range between 21.1 and 26.0%). The highest total dietary fibre was found in lupine composites (7.1 and 9.8%). Hemp samples contained a significant amount of minerals in comparison with the control wheat sample (from 1.16% to 1.98%). According to the above-mentioned differences, flour composites containing single tested grains were distinguished by principal component analysis. All examined plant materials could be recommended for wheat flour fortification in terms of nutritional improvement. The addition of non-traditional flours partially changed both the volume and shape of laboratory prepared bread correspondingly to the type and added amount. |
Phytoextraction of cadmium, copper, zinc and mercury by selected plantsL. Kacálková, P. Tlustoą, J. SzákováPlant Soil Environ., 2009, 55(7):295-304 | DOI: 10.17221/100/2009-PSE During the years 2006 and 2007 the phytoextraction ability of maize (Zea mays), willow-tree (Salix smithiana) and poplar (Populus nigra × P. maximowiczii) to accumulate cadmium, copper, mercury and zinc was investigated. Small scale field experiment was carried out on soil contaminated with chemicals from the waste incineration plant in Hradec Kralové (Czech Republic). Screening of this allotment showed very different contamination of all observed risk elements on places where the material intended to be burnt without safety of leakage into soil. Grown plants showed the different accumulation of observed elements in plant tissues as well as the influence of total content of the risk elements in soil. The highest Cd (1.5-1.73 mg/kg) and Zn (242-268 mg/kg) concentrations were found in willow-tree biomass mainly in the leaves. Cu and Hg were mostly accumulated by maize roots (14.6-15.8 mg Cu/kg and 1.3-7.4 mg Hg/kg) and lower amount was found out in willow-tree leaves again. In reference to total production of each plant the maximum Cd and Zn uptake by aboveground biomass was found in poplars (201 mg Cd/m2 and 38 200 mg Zn/m2) and maize, which showed high Zn uptake. The biggest amount of copper (2563 mg Cu/m2) was accumulated by aboveground maize biomass on the collection point with the highest Cu concentration in soil and by poplar (2394 mg Cu/m2) on the other collection point. The highest Hg uptake differs in reference to total Hg content in soil; willow-tree has the highest uptake on the place with lower Hg content in soil (44.6 mg Hg/m2) and maize has the highest uptake on the place with higher Hg content in soil (92 mg Hg/m2). |
Identification of a new molecular marker C2-25 linked to the Fusarium oxysporum f.sp. radicis-lycopersici resistance Frl gene in tomatoShort CommunicationMirosława STANIASZEK, Wojciech SZCZECHURA, Waldemar MARCZEWSKICzech J. Genet. Plant Breed., 2014, 50(4):285-287 | DOI: 10.17221/70/2014-CJGPB Fusarium oxysporum Schlecht. f.sp. radicis-lycopersici Jarvis & Schoemaker (FORL) is a saprophytic fungus, responsible for the fusarium crown and root rot disease in tomato (Solanum lycopersicum L.). This is one of the most destructive pathogens of this species. A new cleaved amplified polymorphic sequence (CAPS) marker C2-25 was developed for the detection of the dominant gene Frl, which confers tomato resistance to FORL. C2-25 was amplified from a conserved ortholog set II (COSII) sequence C2_At2g38025. The XapI-derived restriction product of 700 bp was informative for the identification of FORL resistant tomato genotypes and can be used as a diagnostic marker in tomato breeding programmes and hybrid seed production. |
Forecasting system for infection risk of phoma stem canker in selected regions of the Czech Republic in 2009-2011Original PaperJana POSLU©NÁ, Eva PLACHKÁPlant Protect. Sci., 2014, 50(1):8-16 | DOI: 10.17221/84/2012-PPS In the period 2009-2011 monitoring of the incidence of phoma stem canker was carried out at selected sites of the Czech Republic (©umperk and Opava regions in North Moravia). The risk of infection was evaluated by assessing the autumn release of Leptosphaeria spp. ascospores and with the proPlant prediction model. In recent years, the incidence of phoma stem canker has been relatively low and this corresponded with the total count of ascospores released in the autumn period but not with an increased level of infection risk announced by the proPlant model. During the monitored period the ascospore concentration reached maximally 2 ascospores/1 m3 per day. Maximum ascospore release was recorded in 2010 as a result of favourable weather conditions. The first incidence of phoma leaf spot has been observed in mid-October. The higher values of ascospores concentration were recorded in the Opava region, but the total number of the trapped ascospores was more often higher in the ©umperk region. |
Establishment of Bryum argenteum and concentrations of elements in its biomass on soils contaminated by As, Cd, Pb and ZnOriginal PaperM. Hejcman, V. Müllerová, S. Vondráčková, J. Száková, P. TlustoąPlant Soil Environ., 2014, 60(11):489-495 | DOI: 10.17221/414/2014-PSE Using a pot experiment with slightly acidic and alkaline soils anthropogenically contaminated by As, Cd, Pb, and Zn, we assessed how the establishment of Bryum argenteum and concentrations of elements (P, Ca, Mg, As, Cd, Cr, Cu, Fe, Mn, Ni, Pb, and Zn) in its biomass are affected by the pH of the substrate, mobility of trace elements, and by quick lime (CaO) and superphosphate (P) additives. Over one vegetation season, in pots naturally colonised by B. argenteum, a substantially higher cover of B. argenteum was recorded on acidic soil that was heavily contaminated with Cd, Pb, and Zn than on alkaline soil with higher As but lower Cd, Pb, and Zn mobility. In acidic soil, the establishment of B. argenteum was substantially improved by CaO additive, which reduced the mobility of Zn and Cd, and by P additive, which improved the P nutritional status and reduced the extremely high concentrations of many elements (As, Cd, Cr, Cu, Fe, Mn, Ni, Pb, and Zn) in its biomass. Although B. argenteum can be used for the monitoring of soil contamination, concentrations of trace elements in its biomass must be evaluated with caution as they can be affected by total and mobile concentrations of elements in the substrate, and by other soil chemical properties. |
Effect of hen age, environmental temperature, and oviposition time on egg shell quality and egg shell and serum mineral contents in laying and broiler breeder hensOriginal PaperE. Tůmová, R.M. Gous, N. TylerCzech J. Anim. Sci., 2014, 59(9):435-443 | DOI: 10.17221/7655-CJAS The aim of the study was to evaluate egg shell quality characteristics, mineral content in the egg shell, and serum mineral concentration during the egg formation process as influenced by oviposition time and ambient temperature at the beginning and end of the laying cycle in laying hens and broiler breeders. Egg shell quality deteriorated significantly at the higher temperature and was lower in broiler breeders than in laying hens. The Ca (P = 0.047) and P (P = 0.018) contents of the egg shell were significantly higher at the higher temperature. The highest (P = 0.028) shell Ca content (352 g/kg) was in eggs laid in the morning, but the highest P (P = 0.030; 1.43 g/kg) and Mg (P = 0.001; 3.88 g/kg) contents were in eggs laid in the afternoon. Broiler breeder egg shells contained significantly more P (P = 0.004) and Mg (P = 0.001) than did those from laying hens. Serum Ca and P levels remained constant throughout the day whereas serum Mg and Zn levels decreased, the rate of decrease in Zn content being the same in all treatments, but with the amounts being greater in laying hens than broiler breeders. The results demonstrate that shell quality characteristics are more severely affected by different factors implemented in this trial compared to the shell mineral composition and especially compared to the serum mineral content. |
In vitro elimination of Black raspberry necrosis virus from black raspberry (Rubus occidentalis) - Short CommunicationShort CommunicationE.J. Cheong, A.R. Jeon, J.W. Kang, R. Mock, G. Kinard, R. LiHort. Sci. (Prague), 2014, 41(2):95-99 | DOI: 10.17221/266/2013-HORTSCI Black raspberry necrosis virus (BRNV) is one of the most important viral pathogens of Rubus spp. In this study, a procedure combining in vitro culture and heat therapy on axillary buds of Rubusoccidentalis was developed to eliminate BRNV from infected plants. Axillary buds were grown aseptically at 4-h alternating periods of 29°C and 38°C with 14-h day length for 1-5 weeks. Shoots induced after thermotherapy were tested for the viruses by RT-PCR. BRNV was not detected in any shoots indicating that BRNV was heat labile. BRNV-free shoots were rooted in vitro and acclimatized in greenhouse. Regenerated plants remained virus-free after 2-month acclimatization, 3-month dormancy and 5-month growth periods. |
Contamination of the soil and water environment by heavy metals in the former mining area of Rudňany (Slovakia)Original PaperLenka ANGELOVIČOVÁ, Danica FAZEKA©OVÁSoil & Water Res., 2014, 9(1):18-24 | DOI: 10.17221/24/2013-SWR Contamination of soil and water environment by heavy metals in a former mining area and their effect on the soil characteristics were determined. Soil samples were collected in the village of Rudňany which is, according to environmental regionalization, classified as an environmentally loaded and unhealthy area. Soil samples were collected in 2011 at eight fields situated at different distance from the pollution source. Total contents of heavy metals (Cu, Pb, Zn, Hg), soil reaction (pH), organic carbon (Cox), activity of urease (URE), acid phosphatase (ACP), and alkaline phosphatase (ALP) were determined in soil samples. Water samples were collected in Rudniansky creek, which flows through the village. The contents of heavy metals (Cu, Pb, Zn, Hg) were determined in water samples. High contents of heavy metals in soil and water result from long-term mining and smelting activities predominantly focused on copper and mercury production. Numerous heaps of waste material and tailing ponds are the main pollutant sources representing a great threat to the environment, as these pollutants can accumulate in plants and enter the food chain. Extremely high and above-limit values of copper and mercury were determined in the sampled soils. According to the index of geoaccumulation, copper has been shown as a serious contaminant in some soil sampling fields, which were determined as strongly contaminated. In terms of the geoaccumulation index, all sampling fields were evaluated as very strongly contaminated by mercury. We found significant positive correlation between zinc, lead, and copper contents in soils, which is a likely sign of the same source of pollution. A nonsignificant but positive relationship between soil reaction and heavy metals and a negative correlation between soil pH and organic carbon were observed. A high degree of soil pollution was reflected in soil biological properties. Activity of soil enzymes significantly decreased with increasing heavy metals content in soils. Rudniansky creek was polluted only by copper and mercury. The highest and above-limit values of these metals were determined at the point where the stream leaves the village (in a downstream direction). |
Echocardiographic assessment of right heart indices in dogs with elevated pulmonary artery pressure associated with chronic respiratory disorders, heartworm disease, and chronic degenerative mitral valvular diseaseOriginal PaperT.C. Tai, H.P. HuangVet Med - Czech, 2013, 58(12):613-620 | DOI: 10.17221/7180-VETMED The aim of this study was to evaluate right ventricular (RV) remodeling and right heart failure associated with different causes of elevated pulmonary arterial pressure (PAP) in dogs. In total, 169 client-owned dogs with tricuspid regurgitation (TR) and 40 client-owned clinically healthy dogs were included. Dogs with TR were further categorised as suffering from chronic respiratory disorders (CRD), heartworm disease (HWD), mild/moderate chronic degenerative mitral valvular disease (CDMD), and severe CDMD. Among the echocardiographic indices of the right heart, no significant difference in the tricuspid annular plane systolic excursion to aortic root diameter ratio was found among the clinical healthy controls and the four different TR categories. No significant differences in TR peak velocity and pulmonic regurgitation peak velocity were found among dogs in the four different TR categories. The ratio of the right to left ventricular basal diameter in the right ventricular-focused view was significantly higher in dogs with chronic respiratory disorders and dogs with heartworms. Left ventricular compression quantified using the eccentricity index and the ratio of the main pulmonary artery to aortic root diameter were significantly higher in dogs with HWD. Their right ventricular acceleration to ejection time (AT/ET) was significantly lower in dogs with HWD. Based on these findings, we conclude that right heart indices are affected by CRD, HWD, and moderate to severe CDMD. However, right heart indices derived from left heart measurements might be underestimated in dogs with CDMD. |
Atypical fibroepithelial hyperplasia of the teats in a Sphynx cat: a case reportCase ReportE. Ozenc, M.F. BozkurtVet Med - Czech, 2014, 59(5):265-269 | DOI: 10.17221/7521-VETMED This study was conducted on a three-year-old Sphynx breed female cat which was brought to the clinic for masses on the teats. The medical history showed that these masses had developed slowly within the period of six months to one year. Following the clinical examination, these masses were removed via surgery. They were between 0.6 cm and 1.5 cm in diameter. Ulcer areas 2 mm to 5 mm in size were observed over the skin. Their sectional surface was uniformly grayish in colour. Histopathological examination of the masses revealed that the cells originated from the glandular duct and had given rise to hyperplasia; connective tissue was densely attached to the masses. Moreover, inflammatory changes and areas of ulceration were observed. Immunohistochemical analysis showed that the cells surrounding the epithelial hyperplasia were vimentin-positive and the proliferative activity of epithelial cells was measured to be 50% by analysis of proliferating cell nuclear antigen (PCNA). Based on clinical, histological and immunohistochemical findings, it was found the masses were diagnosed as atypical fibroepithelial hyperplasia. This case is the first to present a fibroepithelial hyperplasia in the teats of a cat. |
Cryosurgery and electrocautery in treatment of transmissible venereal tumours in large breed dogs: a case reportCase ReportS.J. Choi, D.B. Lee, N.S. KimVet Med - Czech, 2014, 59(9):461-465 | DOI: 10.17221/7688-VETMED Five intact male group-raised Tosa dogs were diagnosed with transmissible venereal tumours. Surgical removal with electrocautery and a cryogun was conducted because the owner wanted to maintain the fertility of the dogs. The dogs were followed up for 12 months. The surgical wounds were completely healed by five to six weeks. The dogs remained fertile without complications or recurrences. To maintain fertility in dogs suffering from transmissible venereal tumours, the combination of an electrocautery and a cryogun is suggested. |
Operation times in John Deere 1110 E forwarders in regeneration fellingOriginal PaperA. Kabeą, J. Dvořák, P. NatovJ. For. Sci., 2014, 60(6):248-253 | DOI: 10.17221/53/2014-JFS We calculated high-power forwarder productivity in regeneration felling with the objective to set long-term work plans. Based on the time studies of the forwarder operator's work operation the operation time consumption was calculated and operation standards for the studied type of forwarder were designed. The standard values were determined based on the volume weight of harvested timber and the forwarding distance. The resulting time consumption required for forwarding 1 m3 of timber, whose mean tree volume is 0.30-0.99 m3.stem-1, and upon forwarding distance of 100-1,000 m ranges from 0.05-0.09 Nh.m-3. |
Occurrence of antagonistic fungi in the soil after cover crops cultivationOriginal PaperE. Patkowska, M. KonopińskiPlant Soil Environ., 2014, 60(5):204-209 | DOI: 10.17221/67/2014-PSE The purpose of the studies was to determine the species composition of fungi and their antagonistic effect towards soil-borne plant pathogens after the cultivation of oats, spring vetch and tansy phacelia as intercrop cover plants. The total population of fungi in the soil after the cultivation of oats was twice as low as after the cultivation of tansy phacelia. A little smaller fungi population was obtained as a result of mulching the soil with spring vetch in comparison to that after the cultivation of tansy phacelia. The proportion of Fusarium spp., Alternaria alternata, Pythium irregulare and Thanatephorus cucumeris isolated from the soil after the cultivation of oats was the lowest one, while being a little higher after the cultivation of spring vetch, and the highest after tansy phacelia. The greatest number of antagonistic fungi occurred in the soil after ploughing in the mulch of oats. Antagonistic fungi isolated from the soil mulched with oats were the most effective in limiting the growth and development of A. alternata, Fusarium culmorum, F. oxysporum, Haematonectria haematococca, P. irregulare and T. cucumeris since the value of their antagonistic effect was the largest. The lowest antagonistic activity of fungi was found out after using tancy phacelia. |
Effects of application terms of three soil active herbicides on herbicide efficacy and reproductive ability for weeds in maizeOriginal PaperJ. Andr, V. Hejnák, M. Jursík, V. FendrychováPlant Soil Environ., 2014, 60(10):452-458 | DOI: 10.17221/561/2014-PSE The aim of this work was to compare herbicide efficacy and reduction of weed reproduction after the application of three frequently used soil residual herbicides during pre-emergent (PRE) and early post-emergent (EPOST) application in maize. Plot field trials were carried out in Central Bohemia during two growing seasons (2010 and 2011). Good efficacy (88%, resp. 83%) was found in isoxaflutole + thiencarbazone (ISF + THC) and terbuthylazin + S-metolachlor (TBA + SMC) on Echinochloa crus-galli, especially in PRE application use. Efficacy on Amaranthus retroflexus was 91% at both tested application periods and there were no significant differences between experimental years. Significant differences in A. retroflexus control were recorded among all tested herbicides (ISF + THC > TBA + SMC > pendimethalin (PEM) + dimethenamid (DMA)). No significant differences between PRE and EPOST were recorded in efficacy on Chenopodium album. Significant differences in efficacy on C. album were recorded among all tested herbicides (ISF + THC > TBA + SMC > PEM + DMA). Mercurialis annua was the most tolerant tested weed, which was significantly better controlled at EPOST herbicide application (73%) compared to PRE application (32%). TBA + SMC showed a significantly higher efficacy on M. annua compared with other tested herbicides. Seed production of all tested weeds was strongly effected by weather conditions, which were significant during 2011, when there was higher than average precipitation during May and June. The most seeds were produced by A. retroflexus > C. album > E. crus-galli > M. annua. ISF + THC best reduced seed production of E. crus-galli, A. retroflexus and C. album, especially when applied at PRE. TBA + SMC best reduced seed production of M. annua. Weed competition on untreated control plots caused yield loss by 90%and 47% in 2011 and 2012, respectively, compared to treatments with the highest yield (ISF + THC). |
Relationship between tree nutritional status and apple qualityOriginal PaperC. Jivan, F. SalaHort. Sci. (Prague), 2014, 41(1):1-9 | DOI: 10.17221/152/2013-HORTSCI Development of prediction models for the quality of apples is useful in guiding fruit tree nutrition and in optimising fruit management. The interrelationships between the leaf nutrient contents and some fruit quality indices were studied in five apple cultivars - Generos, Florina, Delicios de Voinesti, Jonathan and Pionier. Highly significant relationships between N and Fe contents (R2 = 0.734; P < 0.01) and between Cu and K (R2 = 0.702; P < 0.01) were found. Acidity was negatively correlated with soluble solids content in the cvs Generos, Delicios de Voinesti and Jonathan, whereas the respective correlation in the apple cv. Pionier was positive. In cv. Florina fruits no significant correlation was found between acidity and soluble solids content. Among macroelements, nitrogen had a considerable contribution to fruit acidity and this allows to predict this index with a high degree of safety (R2 = 0.690; RMSEPN = 0.105). Microelements have a lower contribution to acidity and a higher one to the sugar accumulation; in case of Zn are R2 = 0.809; RMSEPZn = 4.250. |
Hedging techniques in commodity risk managementOriginal PaperJosef TAU©ER, Radek ČAJKAAgric. Econ. - Czech, 2014, 60(4):174-182 | DOI: 10.17221/120/2013-AGRICECON The article focuses on selected aspects of risk management in agricultural business with the aim to discuss and compare different hedging methods which are relevant for managing the commodity risks associated with agricultural production. The article provides a broader context for understanding the risks and possible responses to it and analyses four basic hedging strategies - commodity futures, forward contracts, options and option strategies. The substance, advantages and disadvantages of each hedging technique are pointed out and compared to each other with the conclusion that there is always some kind of trade-off between the advantages and disadvantages of the particular strategies. The farmers shall, therefore, consider both all aspects of the relevant strategies and their expectations, before they make the final decision which instruments to use. |
Combined surgical and endoscopic approach for the reduction of a congenital hiatal hernia in a cat: a case reportCase ReportL. Pisoni, S. Del Magno, F. Cinti, M. Baron Toaldo, M. Joechler, M. PietraVet Med - Czech, 2014, 59(3):150-156 | DOI: 10.17221/7385-VETMED A case of surgical resolution of type I or "sliding" hiatal hernia is reported. A seven-month-old kitten was presented because of abdominal discomfort, accelerated breathing after eating and chronic vomiting. The clinical examination was unremarkable. Thoracic radiographs and gastroscopy led to the diagnosis of type I hiatal hernia. The surgical resolution consisted of hiatal plication, oesophagopexy and left-flank incisional gastropexy. All procedures were carried out using a 6 mm videoendoscope positioned in the stomach to evaluate the right oesophago-gastric junction reduction. One week after surgery there was a recurrence of symptoms and a second laparotomy was performed. During the second surgery additional hiatal plication was necessary and an oesophagopexy was repeated after dissection of the phrenico-oesophageal ligament. Moreover, a new incisional gastropexy was carried out after resolution of the first one. The cat recovered without complications and at one-year follow-up did show no signs related to the hiatal hernia. This communication reports on possible additional surgical techniques in cases of type I hiatal hernia and contributes to an understanding of the importance of oesophagopexy in cases of hiatus malformation. |
Surgical correction of a splenophrenic shunt in a dog: a case reportCase ReportH. Yoon, M. Roh, S. JeongVet Med - Czech, 2014, 59(8):396-402 | DOI: 10.17221/7660-VETMED A 4.3 kg, nine-year-old, spayed female Shih Tzu was presented for a two-month history of seizures, ataxia, and hyper-salivation. A diagnosis of a splenophrenic shunt was made by use of computed tomography angiography with volume-rendered imaging. A cellophane band was placed around the shunt after its isolation from the central tendon of the diaphragm. Clinical signs continued to wax and wane. Preprandial and postprandial bile acids levels were still elevated 10 months after surgery. An ameroid ring constrictor was placed around the shunt vessel before the vessel entered the diaphragm from its caudal aspect. At three months after the second surgery, the dog was near the normal ranges of preprandial and postprandial bile acids. Although a study of the anatomy of different types of extrahepatic portosystemic shunts has been reported in dogs, to the authors' knowledge, there is a lack of information on clinical presentation, treatment, and postoperative results in a specific type of extrahepatic portosystemic shunt, such as a splenophrenic shunt. Cellophane banding should be avoided for occlusion of a splenophrenic shunt passing along the central tendon of the diaphragm. |
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. |
Timber production and ecological characteristics of trees in coppice forest in the Voskop nature reserve in Český kras - a case studyOriginal PaperL. ©álek, R. Stolariková, L. Jeřábková, P. Karlík, L. Dragoun, A. JeleneckáJ. For. Sci., 2014, 60(12):519-525 | DOI: 10.17221/93/2014-JFS Anew approach to forestry that increasingly values non-timber forest functions brings new interest and value also to coppice forests. A case study in the Voskop nature reserve located in the Český kras Protected Landscape Area was focused on a comparison of the timber production of individually growing trees and in multistemmed trees resprouting after cutting (stools). We recorded tree ecological characteristics of trees such as existence of stem cavities, whether the tree grows individually or from a stool and whether or not the tree is broken, dead or has a dying crown. In total 2,670 trees were sampled on a 1,875 ha sample plot. The main tree species forming coppice stands are Quercus petraea and Carpinus betulus. The total stock volume of only 136 m3.ha-1 is very low at 84 years of age. The stock volume of individually growing trees is 84 m3.ha-1 and the stock volume of trees in stools is only 52 m3.ha-1 although the number of individually growing trees is lower. |
Effect of cluster and berry thinning on Merlot and Cabernet Sauvignon wines compositionOriginal PaperMarko KAROGLAN, Mirela OSREČAK, Luna MASLOV, Bernard KOZINACzech J. Food Sci., 2014, 32(5):470-476 | DOI: 10.17221/598/2013-CJFS The manipulation of grape yield is widely practised to improve grape and wine quality. Merlot and Cabernet Sauvignon vines in the Zagreb vineyard hills, north-western Croatia, were subjected to three crop removal treatments [cluster thinning (CT), berry thinning (BT), CT+BT, and untreated control] in a randomised block design experiment. CT and CT+BT treatments reduced the grape yield but increased the mean cluster weight compared to control vines. BT alone had a little effect on the yield components. Control grapes generally had the lowest soluble solids (°Oe) and highest titratable acidity (g/l). In most cases, control wines had the lowest total phenols, flavan-3-ols, and anthocyanin concentrations, while CT+BT treatment had the highest ones followed by CT treatment. It was concluded that CT+BT produced wines with generally increased total phenols, flavan-3-ols, and anthocyanins, as well as many individual phenolic compounds. Thus, grape yield per vine seems to be strongly connected with the grape and wine compositions. The final cost-effectiveness of this canopy interventions still remains questionable. |
