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Results 2431 to 2460 of 5824:

Effects of crossbreeding on milk production of sheepOriginal Paper

Michaela Èerná, Milan Margetín, Zdeòka Veselá, Michal Milerski

Czech J. Anim. Sci., 2023, 68(10):407-413 | DOI: 10.17221/39/2023-CJAS

The aim of this study was to estimate the effects of crossbreeding on milk production and milk components in crossbred Tsigai, Lacaune, and Improved Wallachian sheep used to create a synthetic Slovak dairy sheep population. The local breeds Tsigai and Improved Wallachian were crossed with the high-yielding breed Lacaune to increase milk yield. The effects of crossbreeding were evaluated based on breed and heterosis effects. The database used consisted of 23 018 lactations from 15 888 ewes. The effects of crossbreeding on milk production and fat and protein content were estimated using the restricted maximum likelihood method in REMLF90. Fixed effects on milk yield were also studied. In ewes with a 100% heterosis effect (ewes from purebred parents of different breeds), the heterosis effect increased milk production by 11.642 kg, milk fat production by 0.772 kg, and protein production by 0.565 kg per milking period. The effect of the Tsigai breed on milk production was –21.98 kg compared to Lacaune, while for the Improved Wallachian breed, the value was –38.58 kg. The Tsigai direct breed effect reduced fat production by 1.56 kg and protein production by 1.34 kg. The Improved Wallachian direct breed effect was –2.71 kg for fat production and –2.27 kg for protein production.

Water activity of Czech dry-cured meat products: Influence of sampling point and sample preparation methodOriginal Paper

Filip Beòo*, Jan Kostlán, Jan Pivoòka, Václav Pohùnek, Rudolf ©evèík

Czech J. Food Sci., 2023, 41(5):340-347 | DOI: 10.17221/99/2023-CJFS


Water activity (aw) is a key factor influencing dry-cured meat products' safety. However, the standards for determining aw do not specify how the laboratory sample for self-analysis should be prepared and adjusted for determination in this type of food. This work aimed to verify whether the place of sampling and method of sample preparation of dry-cured meat products can influence the measured value of aw. For this purpose, samples of dry-cured heat-treated and fermented meat products were purchased from the local market. Samples before analysis were taken from the edges and centre of the meat products, and preparation consisted of: i) homogenisation; ii) dicing (4 × 4 × 4 mm); iii) slicing. The results of this work indicate that aw is significantly affected by both the part of the product from which the sample is taken and the method of preparation of the sample itself (P < 0.05). The highest measured values of aw were determined in samples prepared by slicing, and the lowest values were determined in homogenised samples. The place of sampling significantly affects the aw, especially for dry-cured heat-treated products.

Impact of an organic fertiliser on the yield of white cabbage (Brassica oleracea var. capitata) and the soil productivityOriginal Paper

Danguolė Kavaliauskaitė, Rasa Karklelienė, Julė Jankauskienė

Hort. Sci. (Prague), 2023, 50(4):290-296 | DOI: 10.17221/33/2022-HORTSCI

The aim of this study was to determine the effect of a granular poultry manure fertiliser on the yield and the quality of white cabbage (Brassica oleracea var. capitata), and to determine the effect on the soil agrochemical properties. The effect of the granular poultry manure fertiliser and mineral fertiliser (applied separately and combined at different times – in early spring and in autumn) on the cabbage yields was determined. Investigations were carried out in the fields of the Institute of Horticulture, the Lithuanian Research Centre for Agriculture and Forestry. The object of the research – white cabbage ‘Socrates’ H. The highest white cabbage marketable yield (80.5 t/ha) and the highest amount of vitamin C (7.80 mg per 100 g of products) was obtained by applying the granular poultry manure fertiliser in the autumn and the mineral fertiliser in the spring, where the granular poultry manure fertiliser applied in the early spring and the granular poultry manure fertiliser applied in the autumn with the mineral fertiliser applied in spring retained a higher content of humus (1.82–1.94%), organic carbon (1.06–1.12%) and total nitrogen (0.099–0.147%). The mineral nitrogen residue in the soil decreased when the cabbage was fertilised in the spring with the mineral fertiliser and when fertilised in the spring with the mineral fertiliser in combination with the granular poultry manure fertiliser by 8.1–10.8 kg/ha. The minimum content of nitrates in the heads of the white cabbage was found after using the granular poultry manure fertiliser in the autumn.

Detection and molecular identification of a 16SrI group phytoplasma associated with sisal purple leafroll diseaseOriginal Paper

Guihua Wang, Weihuai Wu, Jingen Xi, Helong Chen, Chunping He, Ye Li, Jinlong Zheng, John S. Hu, Kexian Yi

Plant Protect. Sci., 2023, 59(1):19-30 | DOI: 10.17221/90/2022-PPS

Sisal purple leafroll disease (SPLD) is a destructive disease affecting sisal in China, however, its etiology remains unknown. This disease is characterized by purple margins and rolling and yellowing of the leaves. Recently, phytoplasma was found to be present in SPLD-affected sisal according to PCR assay. To further verify the presence of phytoplasma, determine its association with SPLD and identify the possible pathogenic phytoplasma infecting sisal, 80 symptomatic and 65 asymptomatic sisal samples were collected from the main sisal farms in three Chinese provinces, including Hainan, Guangdong and Guangxi provinces, from 2018 to 2021. PCR assays and transmission electron microscopy further revealed the presence of phytoplasma. Nested PCR using the universal primer R16mF2/R16mR1 followed by R16F2n/R16R2 was confirmed as the most effective molecular method for the detection of phytoplasma in sisal. A comparison of the detection rate of phytoplasma in symptomatic (83%) versus asymptomatic (17%) sisal populations showed some association between phytoplasma and SPLD. Sequencing analyses, phylogenetic analyses, and virtual restriction fragment length polymorphism analyses confirmed the presence of phytoplasma in sisal belonging to 16SrI-B. This is the first report of 16SrI-B phytoplasma infecting sisal in China.

Echocardiographic measurements and cardiac anatomy in healthy Western hognose snakes (Heterodon nasicus)Original Paper

M Oliveri, C Carnabuci, M Vignoli, S Di Feliciantonio, M Di Feliciantonio, L Della Salda, Z Knotek, M di Tommaso, A Luciani

Vet Med - Czech, 2023, 68(2):75-82 | DOI: 10.17221/63/2022-VETMED

This study aims to describe the most important cardiac structures in the Heterodon nasicus through echocardiography and anatomical dissection. Echocardiographic and echo-Doppler measurements were performed on twenty healthy adult Heterodon nasicus (10.10). The values of the ventricular length, aortic diameter, pulmonary trunk diameter, the mean thickness of the interventricular septum, and thicknesses of the wall of the cavum pulmonale (Cav. P) and cavum arteriosum (Cav. A), were measured. The aortic flow and pulmonary trunk flow were recorded. Two dead specimens (1.1) were dissected. The male’s pulmonary trunk diameter was bigger compared to the female’s in both the long and short axis. The reproductive ecology of Heterodon nasicus has yet to be fully elucidated upon, however, male territorialism and dispersal from the hibernacula, and multiple male courtships toward a single female were described, hence, the more active reproductive activity of the male and the consequent sexual selection toward a higher aerobic performance can be hypothesised. A moderate interventricular right to left shunt was noticed in the Cav. V of all the specimens, which is considered normal and should not confuse the clinician. Congenital defects, cardiomyopathies, valvulopathies, and pericardial diseases are known to occur in ophidians and other reptiles. Reliable data and profound knowledge of the anatomy and physiology of the ophidian heart are fundamental for the in vivo diagnosis of cardiac diseases in snakes.

Meta-analysis of genetic parameters for productive traits in Nile tilapia (Oreochromis niloticus)Original Paper

Elizangela Zayana Lima D'suze, Nandrya Hayne Santos de Lima, Denise de Assis Paiva, Nilsa Duarte da Silva Lima, Thalles Ribeiro Gomes, José Teodoro de Paiva

Czech J. Anim. Sci., 2024, 69(5):200-208 | DOI: 10.17221/6/2024-CJAS

The advances in the production traits of Oreochromis niloticus are due to the development of genetically superior broodstock animals. Understanding the genetic variability of fish stocks is crucial to any animal breeding program. The aim of this study was to perform a meta-analysis of genetic parameters that considers the variability between studies for economically important traits in the Nile tilapia (Oreochromis niloticus) production. The final dataset from literature review contained 226 estimates of heritability and 53 estimates of genetic correlation across 37 peer-reviewed articles published between 2002 and 2022. Weighted genetic parameter estimates were obtained by fitting a random effect model for all traits studied. Heterogeneity across studies were assessed using the Q statistic and I2 index. Heritability estimates ranged from low to moderate magnitude, indicating that a greater response to selection is expected for body length (0.37), body weight (0.29), body width (0.28), and daily weight gain (0.28), compared to the other traits, body height (0.25) and fillet yield (0.19). Genetic correlations ranged from moderate to high magnitude (0.47 to 0.94), which suggests that part of expression of traits is regulated by the same gene groups. The meta-analysis study provided reliable genetic parameter estimates and these findings may be served as the baseline reference for new Nile tilapia (Oreochromis niloticus) breeding programs.

Mapping of genomic regions associated with dwarfing and the determinate growth habit in horsegram (Macrotyloma uniflorum)Original Paper

Mala Ram Modi, Megha Katoch, Nisha Thakur, Manisha Gautam, Sunny Choudhary, Rakesh Kumar Chahota

Czech J. Genet. Plant Breed., 2023, 59(4):196-204 | DOI: 10.17221/119/2022-CJGPB

Horsegram (Macrotyloma uniflorum) – an important, self-pollinated food legume, however due to limited genomic and genetic resources the genetic improvement could not be achieved as compare to other major legumes. Our work aims at finding novel microsatellite markers and their use for the construction of a linkage map from 157 individuals of F9 recombinant inbred lines (RILs) of horsegram. The determinate growth habit and plant height are important traits for its suitability for different cropping systems. The genotypic data were generated by screening 2 395 molecular markers, of which 600 (25.05 %) polymorphic markers were selected. Two-hundred eighty-seven (287) markers were mapped on ten linkage groups (LGs) at a log of odds (LOD) of 3.5 straddling 796.76 cM with 2.78 cM of marker density. For the identification of the quantitative trait loci (QTLs), the phenotypic data recorded on the RILs for the plant height and growth habit were analysed using the statistical tools JoinMap®and Windows QTL cartographer, based on the composite interval mapping (CIM) technique. Across the ten linkage groups, we detected four QTLs (LOD ≥ 2.5) for four traits. All the traits were major QTLs as indicated by the percentage of phenotypic variance (PVE) (≥ 10%) that ranged from 13.5% to 40.3%, therefore, this is very important information which can be used in marker-assisted selection (MAS). The present genomic information generated in this orphan crop, thus, provides the base for genetic improvements by devising molecular breeding strategies.

Detection of Coxiella burnetii and characterisation by multiple-locus variable-number tandem repeat analysis in bovine bulk tank milk samplesOriginal Paper

B Yanmaz, EK Ozgen

Vet Med - Czech, 2023, 68(5):185-190 | DOI: 10.17221/87/2022-VETMED

Coxiella burnetii is the aetiological agent of Q fever, which is highly prevalent in Turkiye, but information on the genetic profiles of the bacterium is limited. This study aimed to investigate the presence of C. burnetii in bovine bulk tank milk (BTM) samples by polymerase chain reaction (PCR) and to investigate the genotypes by means of multiple-locus variable-number tandem repeat analysis (MLVA). A total of 25 markets that sold raw cow’s milk were analysed by conventional PCR analysis. An MLVA analysis was performed at six loci, namely MS23, MS24, MS27, MS28, MS33, and MS34, to determine the genotypic variations of C. burnetii found in the positive DNA samples. The DNA of C. burnetii was detected in 16% of the BTM samples. The C. burnetii strains identified in the bovine milk samples collected in this study were found to belong to the same genotypic group as those detected in the bovine milk samples gathered in Greece. As a result, both the presence and genotyping studies of C. burnetii on the BTM samples in Turkiye will contribute to the determination of the geographical distribution of the agent.

Endophytic fungi of hazelnut (Corylus avellana)Review

Rosario Nicoletti, Beata Zimowska

Plant Protect. Sci., 2023, 59(2):107-123 | DOI: 10.17221/133/2022-PPS

Results of a vast research activity carried out worldwide in the last decades have demonstrated that endophytic fungi hold a fundamental role in improving plant fitness based on their aptitudes as growth promoters and/or defensive mutualists. These properties may have applicative perspectives in crop production, particularly for tree species such as hazelnut (Corylus avellana), which is mostly cropped extensively in semi-natural contexts of highland regions throughout the temperate zones. The available data on the occurrence, ecological roles, and applications in biotechnology of endophytic fungi associated with hazelnuts are revised in this paper in view to provide a reference supporting future investigations and projects aimed at exploiting the potential of this component of the plant microbiome.

Complete chloroplast genome sequence and characteristics analysis of Qingda no.1 alfalfa (Medicago sativa L. cv. Qingda no.1)Original Paper

Yuling Ren, Yajun Ma, Xue Li, Xiaoan Li, Guozhu Yang, Ping Li

Czech J. Genet. Plant Breed., 2023, 59(3):160-168 | DOI: 10.17221/71/2022-CJGPB

Medicago sativa is the most widely cultivated forage legume and one of the most economically valuable crops throughout the world. Qingda no.1 (Medicago sativa L. cv. Qingda no.1) is an excellent alfalfa local variety with strong cold, drought and salt resistance in the three rivers source area of Qinghai. In this study, the whole chloroplast (cp) genome of Qingda no.1 was sequenced, assembled and its structure was analysed by the Illumina high-throughput sequencing technology. The results showed that the chloroplast genome of Qingda no.1 exhibits no obvious typical quadripartite structure; the total length of the chloroplast genome is 125 637 bp; the chloroplast genome contained 111 genes, including 77 protein-coding genes, 30 tRNA genes, and 4 rRNA genes, with an overall GC content of 38.33%. The relative synonymous codon usage showed that 68.67% of the codons RSCU > 1 in Qingda no.1, with the preference ending with A and T. The simple sequence repeat (SSR) analysis identified 62 SSR loci. The phylogenetic analysis of the cp genome, Qingda no.1 clustered closely with Medicago sativa KU321683 (Medicago sativa L. cv. KU321683). These results are helpful for the further study of the Qingda no.1 adaptation mechanism to high altitude stress environments.

Development of microclimate in the New Holland T6.165 tractorOriginal Paper

Jan Hart, Veronika Hartová

Res. Agr. Eng., 2023, 69(4):206-210 | DOI: 10.17221/27/2023-RAE

A number of stimuli lead to what is termed "seasonal fatigue", where the only firm interconnection is the fact that this form of fatigue only occurs during a certain period of the season. The interior of the cabin and its effect on the machine operator is notable. The microclimate of the environment in which the operator works has a direct impact on his/her condition and, consequentially, the extent of his/her fatigue. The development of microclimate in a modern agricultural machine must be identified, and based on such findings, recommendation should be given regarding procedures for improving the current situation in agricultural technology. For testing, the New Holland T6.165 tractor was therefore selected. The individual measurements show that a certain drop of oxygen occurs in the cabin during the first half hour of driving. This leads to  an increase in CO2, which is in turn caused by the higher ventilation of the given individuals present in the vehicle. To eliminate said drops in O2, the use of oxygen concentrators may be recommended.

Improving the stability of soil aggregates using soil additives and revegetation by grasslandOriginal Paper

Markéta Mayerová, Tomá¹ ©imon, Martin Stehlík, Mikulá¹ Madaras

Plant Soil Environ., 2023, 69(6):282-290 | DOI: 10.17221/123/2023-PSE


Soil aggregate stability (SAS) is an important factor for soil quality and fertility. There are limited possibilities to influence this soil property, but one investigated method is the application of additives which have the potential to improve SAS. We established a four-year field experiment on a clay-loam Luvisol with poor soil structure to monitor SAS following the application of additives and grassland revegetation. Treatments included: (1) the untreated control; (2) compost; (3) biochar; (4) liming; (5) cattle manure; (6) woodchips; (7) woodchips + fungi inoculation; (8) pellets; (9) pellets + fungi; (10) hydrogel and (11) the change of arable land to grassland. The lowest 23.39% average SAS value was recorded for the untreated control, and then 23.92% for lime treatment, and the highest 27.69% average value was for hydrogel treatment, followed by woodchips with 27.22% and woodchips + fungi with 27.02%. A significant SAS increase of more than 200% was evident on the grassland two years after the trial’s establishment, and this was also associated with other improved physical and chemical soil properties. Finally, while most of our applied soil additives were relatively ineffective in agricultural practice, grassland revegetation is highly recommended for its rapid increase in soil aggregate stability.

The effects of COVID-19 crisis on small family farms: Empirical evidence from Visegrad countriesOriginal Paper

Ivana Bla¾ková, Veronika Svato¹ová, Gabriela Chmelíková, Vojtìch Tamá¹, Eli¹ka Svobodová, Libor Grega, Simona Mi¹kolci, Jakub Piecuch, Apolka U

Agric. Econ. - Czech, 2023, 69(9):366-374 | DOI: 10.17221/217/2023-AGRICECON

This paper aims to investigate the effects of the COVID-19 crisis on small family farms in Visegrad countries and to provide evidence of how they have responded and coped with the crisis. We conducted our investigation using an exploratory qualitative research design based on 86 semistructured in-depth interviews with owners or responsible managers, and explored the effects of the COVID-19 pandemic on different areas of their businesses, such as human resources, supplier-customer relations, production, distribution channels or strategies, price of inputs and outputs and business models. Our findings showed that small family farms have been resilient in the face of the COVID-19 pandemic. Several negative impacts were identified, such as a decrease in sales due to the closure of accommodation and restaurant services, delays in the supply of inputs, and minor problems with the availability of workers, but those were perceived to be moderate. However, the COVID-19 pandemic created not only difficult challenges but also opportunities for small farms. Based on our findings, three main recommendations regarding the adaptability and resilience of family farms in Visegrad countries have been formulated: i) the importance of a diversification strategy, ii) selling through short supply chains, and iii) digitalisation of agriculture.

Successful treatment of a benign, non-infected cyst in a dog by bone marrow injectionsCase Report

B Degorska, J Sterna, J Bonecka, M Sobczak-Filipiak, J Jacewicz

Vet Med - Czech, 2023, 68(8):337-342 | DOI: 10.17221/19/2023-VETMED

Bone cysts are rare orthopaedic problems in dogs. There are no clear treatment guidelines. A young male Shih Tzu was referred to Small Animal Clinic with fifth-degree lameness (5/5) of the left thoracic limb, and with swelling and deformation of the distal humeral region. The radiological assessment revealed an enlargement of the distal brachium and an extensive hypodense osteolytic lesion in the distal metaphyseal region of the humerus. Diagnosis of the bone cyst was formulated and treated with a mini-invasive method using autologous non-concentrated bone marrow injections. The treatment was successful, and at the three weeks, the cyst significantly changed its structure. The follow-up at 12 weeks after the first injection, and at one year revealed complete recovery. To our knowledge, this is the first evidence of a bone cyst in a young dog successfully treated with a minimally-invasive method by using a non-concentrated autologous bone marrow injection.

A novel eggplant AP2/ERF transcription factor StPti5 confers resistance to Verticillium wilt across different speciesOriginal Paper

Nanyang Li, Yinping Niu, Xing Wang, Suna Wang, Yuhui Chen, Liping Wang

Plant Protect. Sci., 2023, 59(4):325-336 | DOI: 10.17221/27/2023-PPS

The APETALA 2/ethylene response factors (AP2/ERFs) are considered essential in plant disease resistance responses. In this study, a novel eggplant AP2/ERF transcription factor gene, StPti5, was identified and functionally described from wild eggplant (Solanum torvum Sw.). The results of bioinformatics analysis show that StPti5 protein contains a DNA-binding AP2/ERF domain and shares high degree of amino acid similarity with the other known AP2/ERF domain. Subcellular localization assay shows that StPti5 protein was localized in the nucleus. Expression of StPti5 was induced by infection with Verticillium dahliae, ethylene, and methyl jasmonate. Analysis of expression patterns suggests that the function of StPti5 in resistance to Verticillium wilt was most closely linked to ethylene signaling. Overexpression of StPti5 in Arabidopsis thaliana could improve disease resistance to V. dahliae and activate genes linked to the ethylene signaling pathway. Studies on the A. thaliana defence response revealed that the formation of reactive oxygen species (ROS) increased considerably following overexpression of StPti5. In summary, our analysis suggest that StPti5 gene is a functional gene that could improve eggplant's resistance to V. dahliae.

Fowl adenovirus induced different manifestations of the disease in two consecutive chicken breeding flocks in a poultry hallCase Report

M Levkutova, M Levkut, R Herich, V Revajova, V Seman, M Cechova, M Levkut

Vet Med - Czech, 2023, 68(1):38-42 | DOI: 10.17221/27/2022-VETMED

This study investigated an adenovirus infection in two consecutive breeding flocks in the same poultry hall. Thirty-six thousand one-day-old chickens of the ROSS 308 hybrid broiler type were kept together in one hall. The chickens in the first breeding flock during fattening did not show any clinical signs of the disease or increased mortality. Typical clinical signs of the adenovirus infection were seen in the second breeding flock. The signs included: depression, apathy, somnolence, a crouched position with a droopy head, fuzzy feathers, anaemic combs and wattles, sporadic nervous signs, and reduced weight gain. Increased mortality was recorded from 18 to 25 days of age, the higher mortality rate resulted from dehydration and exhaustion. The surviving chickens showed growth slightly below average by the end of the fattening period. The necropsies of the chickens in the first flock showed characteristic lesions for inclusion body hepatitis (IBH). Adenoviral gizzard erosions (AGE) were found mainly in the chickens of the second consecutive breeding flock. In both breeding flocks, FAdV-A was detected by polymerase chain reaction (PCR) in the liver and gizzard samples. The presence of fowl adenovirus B was not confirmed in the evaluated samples. The results showed lesions in the first flock typical for IBH, whereas the pathological changes in the second flock were characteristic of AGE.

Effect of feeding a diet containing housefly (Musca domestica) larvae extracts on growth performance in broiler chickensOriginal Paper

Sang-O Park

Czech J. Anim. Sci., 2023, 68(1):44-51 | DOI: 10.17221/168/2022-CJAS


Insects like housefly (Musca domestica L.) are future feed resources for economic animals because insects can improve growth performance by promoting the immune function and gut microbial balance. However, little is known about research reports on housefly larvae extracts containing an antibacterial peptide. This study investigated the effect of feeding diets supplemented with housefly larvae extract (HLE) containing antibacterial peptides on the growth performance of broiler chickens. Nine hundred broilers (Ross 308) were fed diets containing HLE for 35 days. Treatment groups consisted of CON (control without HLE), PC (positive control, 8 ppm of avilamycin), HLE50 (diet containing 50 ppm of HLE), HLE100 (diet containing 100 ppm of HLE), HLE150 (diet containing 150 ppm of HLE), and HLE200 (diet containing 200 ppm of HLE). Body weight gain and feed conversion ratio were significantly (< 0.05) increased in HLE150 and HLE200 groups compared to those in the CON group. Spleen weights were higher in HLE150 and HLE200 groups than in the CON group. Caecal bifidobacteria and Lactobacillus counts were significantly (< 0.05) higher in HLE150 and HLE200 groups whereas E. coli and coliform bacteria counts were higher in the CON group. Caecal acetic acid, propionic acid, and total short-chain fatty acid levels were significantly (< 0.05) higher in HLE150 and HLE200 groups than in the CON group. These results show that feeding diets containing 150 ppm of HLE containing antimicrobial peptides could replace antibiotics to improve the growth performance of broiler chickens.

Development and evaluation of a low-cost evaporative cooling system for agricultural product storageShort Communication

Natesan Kapilan, Vijay Kumar Patil

Res. Agr. Eng., 2023, 69(1):48-53 | DOI: 10.17221/41/2021-RAE

Agricultural products are highly perishable and, hence, we need to preserve these products after harvest. India is an agricultural country and, thus, the post-harvest storage of perishable agricultural products is important to reduce the gap between the demand and supply. Cold storage technologies have been developed and are used in India; however, these technologies are not popular in rural and remote areas due to the higher initial cost and the electrical energy requirement. Therefore, a number of low-cost technologies have been developed and, among these technologies, the evaporative cooling technology is gaining in popularity due to its simple design and lower initial cost. In this work, we have developed and tested a solar photovoltaic (PV) powered evaporative cooling system and used coconut coir as the cooling medium and compared the results with celdex pad. From this work, we observed that this system is an economical and efficient in reducing the temperature and increasing the relative humidity for the storage of agricultural products.

First cases of herbicide resistance of Tripleurospermum inodorum in the Czech RepublicOriginal Paper

Jaromír ©uk, Jakub Mikulka, Madhab Kumar Sen, Pavlína Ko¹narová, Kateøina Hamouzová, Josef Soukup

Plant Soil Environ., 2023, 69(2):81-87 | DOI: 10.17221/427/2022-PSE

Tripleurospermum inodorum (L.) Sch. Bip. is one of the most economically important and yield-reducing weeds in cereals in Europe. Random and systematic monitoring of this weed might provide an early warning for the farmers and slow down the pace of the evolution of herbicide resistance. This study aimed to identify resistant populations of T. inodorum in the Czech Republic and elucidate their possible resistance mechanism/s. Monitoring and screening of T. inodorum for herbicide resistance against acetolactate synthase (ALS) inhibitors and synthetic auxins was carried out. Greenhouse experiments and molecular-genetics studies were conducted to characterize the resistance. While all the tested populations were found to be susceptible to synthetic auxins, two populations (MATIN 2 and MATIN 4) were found to be resistant against tribenuron (ALS inhibitor). However, their cross-resistance to florasulam was not confirmed. The resistance mechanism detected was the target-site substitution of Pro197 at the ALS gene. The two populations carried different point mutations: Pro197Ser (MATIN 2) and Pro197Gln (MATIN 4). This is the first study in the Czech Republic to identify the survival mechanism in T. inodorum for resistance to ALS-inhibiting herbicides. Our results from this research will provide basis for resistance management in T. inodorum in the Czech Republic and other countries.

Inorganic and organic foliar fertilization in olivesReview

Savros Sotiropoulos, Christos Chatzissavvidis, Ioannis Papadakis, Viktor Kavvadias, Christos Paschalidis, Chrysovalantou Antonopoulou, Antonia Koriki

Hort. Sci. (Prague), 2023, 50(1):1-11 | DOI: 10.17221/69/2022-HORTSCI

The application of nutrient solutions to the foliage of plants is an alternative means to fertilise crops. Foliar fertilisation is used to overcome the disadvantages of soil applications. Variable plant responses to these foliar fertilisation spray solutions have often been described in the literature. However, knowledge about the penetration mechanisms, the role of a leaf-applied inorganic or organic solution, and the results obtained by its application is still limited. The complex character of the factors determining the effects of sprays hinders the development of suitable foliar fertilisation strategies, applicable under variable local conditions and for various plant types. This review describes some basic factors involved in the penetration process of foliar sprays in olive (Olea europaea L.) trees. Chemistry, leaf penetration, and plant nutrition principles will be merged with the aim of clarifying the constraints, opportunities, and future perspectives of sprays to cure olive tree nutrient deficiencies and, hence, both increase the yield and improve the fruit quality.

Herbicide drift vs. crop resilience – the influence of micro-ratesOriginal Paper

Milan Brankov, Bruno Canella Vieira, Milo¹ Rajkoviæ, Milena Simiæ, Jelena Vukadinoviæ, Violeta Mandiæ, Vesna Dragièeviæ

Plant Soil Environ., 2023, 69(4):161-169 | DOI: 10.17221/58/2023-PSE

A greenhouse study was conducted to test the effects of low herbicide dose exposure on different crops measuring visible damages, plant height, leaf area, and dry matter. Seven crops were tested: lettuce (Lactuca sativa L.) cv. Novosadska majska maslena, oil pumpkin (Cucurbita maxima Duch) cv. Olivija, oilseed rape (Brassica napus L.) cv. NS Ras, pepper (Capsicum annuum L.) cv. Kurtovska kapija, soybean (Glycine max (L.) Merr) cv. ZP Laura, sunflower (Helianthus annuus L.) cv. NS Kruna, and tomato (Solanum lycopersicum L.) cv. Dunavski Rubin. Herbicide dicamba in the range of 0.14 to 1 155.6 g a.i. (active ingredient)/ha inhibited biomass, height, leaf area, and visual injury of all crops, while glyphosate doses from 0.48 to 3 840 g a.i./ha also reduced the growth of all tested species. A rate of 116 g a.i./ha mesotrione was needed to reach 80% visual injury in oilseed rape, while the same effects on lettuce only required 1.8 g a.i./ha of mesotrione. Tomato and oil pumpkin were also sensitive to low mesotrione doses, where only 1.3 g and 0.5 g a.i./ha of mesotrione was needed for 80% of biomass reduction, respectively. Lettuce was the most sensitive crop of all tested species; biomass was reduced by 80% by dicamba, glyphosate, mesotrione, and nicosulfuron at the low rates of 33 g a.i./ha, 19 g a.i./ha, 1.25 g a.i./ha, and 2.7 g a.i./ha, respectively. Among all herbicides, visible injuries were detected in dicamba at the lowest rates. Soybean was the most tolerant of glyphosate, mesotrione, and nicosulfuron. Based on the available literature and obtained results, herbicide off-target movement must be mitigated to maximise herbicide efficacy and decrease the negative influence on susceptible plants and the environment.


Chemical composition, antimicrobial activities, and molecular docking studies of Turkish propolis ethanol extractOriginal Paper

Gokben Ozbey, Mustafa Necati Muz, Elif Seren Tanriverdi, Sultan Erkan, Niyazi Bulut, Baris Otlu, Franti¹ek Zigo

Czech J. Food Sci., 2023, 41(2):144-154 | DOI: 10.17221/100/2022-CJFS


The purpose of the present study was to investigate the antimicrobial effect of propolis ethanol extract collected from the Tarsus district of Mersin province, Kilis province, Yayladagi district of Hatay province in southern Türkiye and Sarkoy district of Tekirdag province of northwestern Türkiye against Escherichia coli (ATCC 25922), Helicobacter pylori (ATCC 43504), Pseudomonas aeruginosa (ATCC 27853), and Staphylococcus aureus (ATCC 29213). Their chemical constituents were detected via liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS). They were used in a molecular docking approach to search the interactions between the propolis compounds. A total of 24 phenolic compounds were detected in all samples. 3–4 dimethoxycinnamic acid, caffeic acid and genistein were indicated to be the predominant phenolic compounds in propolis extracts by LC-MS/MS, while rutin was found in the lowest concentration. Phenolic compounds were detected in a high concentration of the propolis samples collected from the Tarsus district of Mersin province. The broth microdilution method determined minimum inhibition concentration (MIC) values. MIC values ranged from 0.02 to 14 mg·mL–1. E. coli and S. aureus examined were as susceptible to the propolis extracts except for Mersin and Tekirdag propolis samples. The propolis sample collected from the Tarsus district of Mersin province presented the highest antibacterial activity on P. aeruginosa with MIC values of 1 mg·mL–1. Active substances in propolis were docked to the relevant target proteins (5LMM, 4NX9, 5YHG, and 5FXT) representing E. coli (ATCC 25922), H. pylori (ATCC 43504), P. aeruginosa (ATCC 27853), and S. aureus (ATCC 29213), and with the help of molecular simulation. With this study, we indicated that the ethanol extract of propolis had a stronger antibacterial activity on S. aureus isolates than that of E. coli, H. pylori, and P. aeruginosa. Although each component of propolis contributed to the antibacterial activity, the contribution of the vitexin component to the antibacterial activity was found to be quite significant.

Pyrethroid susceptibility and oxidative detoxification mechanism in Colorado potato beetle and western corn rootwormOriginal Paper

Daria Dworzañska, Joanna Zamojska, Pawe³ Wêgorek, Pawe³ K. Bere¶, S³awomir Drzewiecki

Plant Protect. Sci., 2023, 59(2):174-184 | DOI: 10.17221/53/2022-PPS

The Colorado potato beetle (CPB) and the western corn rootworm (WCR) are among the world’s most expansive insect pests. The aim of the study was to assess, for the first time in Poland, the levels of susceptibility to deltamethrin and tau-fluvalinate in the WCR and to determine the current status of susceptibility to those active substances in the CPB. In addition, the role of oxidative metabolism in the detoxification of pyrethroids was determined using piperonyl butoxide (PBO). The study found pyrethroid resistance in the CPB populations. The WCR populations exhibited “high susceptibility”, “susceptibility”, “low resistance” and “medium resistance” to the pyrethroids tested. Experiments using PBO showed that oxidative enzymes are involved in the deltamethrin detoxification mechanism in the CPB, although the effectiveness of this mechanism in Poland is decreasing. PBO was found to be highly toxic to the WCR populations. The findings from this study should be taken into account when developing a strategy to prevent the development of resistance in the pest species. The results for the toxicity of PBO to Polish WCR populations demonstrated that the enzymes inhibited by PBO are involved in important metabolic processes, which should be considered when developing innovative control methods for this pest.

Influence of primary tillage on the displacement of soil particlesOriginal Paper

Pavel Bro¾, Josef Hùla

Res. Agr. Eng., 2023, 69(2):101-106 | DOI: 10.17221/76/2022-RAE


The loss of soil particles due to erosion is one of the main problems of current agriculture. However, soil tillage may also contribute to the undesirable transport of soil particles. It is to note that the effects of particular working elements used on implements for soil tillage have not been described in a sufficient way. To determine the translocation of soil particles, measurements were done in the Central Bohemian region. Two basic machines for soil tillage were used for measurements: a disc harrow and a tine cultivator. Measurements were performed on sandy-loamy Cambisol after the harvest of a spring cereal crop. White limestone grit was used for the indication of soil particle translocation. Great translocation of soil particles was observed after soil tillage with a tine cultivator ‒ the most distant particles were found out at a distance of more than 1.50 m from the original location. After soil tillage with disc harrows, the most distant particles were found out at a distance of 0.90 m. The dependence of tracer weight on a distance from the original location could be described for disc harrows and tine cultivator by an exponential function.

Immunohistochemical analysis of extracellular signal-regulated kinase expression in mature and immature bulls’ testes and epididymidesOriginal Paper

S Jang, C Yun, B Kim, S Kang, J Lee, S Jeong, Y Cho, K Sung-Ho, L Chang-Min, C Moon, K Joong-Sun

Vet Med - Czech, 2023, 68(6):231-237 | DOI: 10.17221/34/2023-VETMED

Extracellular signal-regulated kinase (ERK) has been implicated in mammalian testicular and epididymal development. This study aimed to investigate ERK expression in the immature and mature testes and epididymides of bulls. We evaluated ERK expression using immunoblot analysis and immunohistochemistry. Immunoblot analysis revealed that immature bull testes and epididymides had higher phosphorylated ERK (pERK) expression than mature bull testes and epididymides. pERK immunoreactivity was higher in immature epididymides than in immature testes. pERK was localised mostly in spermatogonia, undifferentiated sustentacular (Sertoli) cells, and interstitial (Leydig) cells in immature testes, as well as in some spermatocytes and spermatids in mature testes. In immature epididymides, the body and tail had higher pERK expression than the head, whereas pERK was broadly distributed throughout the stereocilia, basal cells, and connective tissues. pERK distribution in the head of mature epididymides was similar to that in immature epididymides, whereas few connective tissue cells were expressed in the body and tail of mature epididymides. Collectively, these results suggest that ERK is expressed in the testis and epididymis of immature and mature bulls with varying intensities, and the role of ERK in male reproductive organs may include the specific function of its development.


Analysis of the propensity of Italian and German forest owners towards forest certification for ecosystem servicesOriginal Paper

Emanuela Lombardo

J. For. Sci., 2023, 69(6):266-276 | DOI: 10.17221/193/2022-JFS

This study analyses the perception of the relationship between forest certification and the production of ecosystem services by Programme for the Endorsement of Forest Certification (PEFC) and Forest Stewardship Council (FSC) sustainable forest management (SFM) certification holders. In addition, the psychological constructs that govern the use of certification for ecosystem services are investigated. Specifically, online questionnaire surveys were submitted to a sample of Italian and German forest owners and managers to study reasons for and against and global motives to adopt certification for ecosystem services through the application of Behavioural Reasoning Theory (BRT). Results show that respondents believe that certification can better support ecosystem services related to 'regulation and maintenance' and the conservation of biodiversity. On the other hand, the application of BRT has only been partially useful in explaining the psychological factors towards the adoption of ecosystem services certifications. In any case, attitudes and reasons for certainly had a significant influence on the intention to adopt certifications. Apart from the scientific implications, these results have practical applications for policymakers who can focus on the dissemination of the certification of ecosystem services by trying to support through eco-policies, the attitudes and reasons for expressed by forest owners.

Clinical infection of Brucella canis in a companion dog with discospondylitis in the Republic of KoreaCase Report

JH Seo, YI Oh, SH Kim, KW Seo, BJ Kang

Vet Med - Czech, 2023, 68(7):293-298 | DOI: 10.17221/37/2023-VETMED

A 2-year-old, spayed female, Bichon Frise dog was presented with reluctance to exercise, back pain, and frequent sitting down. Multiple osteolysis, periosteal proliferation, and sclerosis of the vertebral endplates of T11–13 were observed in the radiography, computed tomography, and magnetic resonance imaging. The bacterial culture of the urine specimen, the polymerase chain reaction (PCR) of the blood, and the antibody tests were positive for Brucella canis. Accordingly, discospondylitis caused by B. canis was diagnosed and doxycycline was administered. The clinical signs resolved and the culture and PCR results were negative afterwards. Doxycycline was discontinued after 6 months. The clinical signs recurred 2 weeks later, and the combination treatment of doxycycline and enrofloxacin was initiated. Though no clinical signs were observed after 9 months and the bacterial cultures and PCR were negative, the antibody titre remained at 1 :  200 or more. The dog will continue taking antibiotics until the antibody titre drops. To the best of our knowledge, this is the first case report of a clinical infection of B. canis associated with canine discospondylitis in the Republic of Korea. Although the clinical signs of brucellosis might improve with antibiotic treatment, the disease cannot be cured due to Brucella’s various strategies to evade host immune systems. Specifically, it can proliferate and replicate within the host cells, resulting in an environment that makes treatment less effective. Furthermore, owing to its zoonotic potential, owners and veterinarians should consider lifelong management or euthanasia.

Herbicides and nutrients interaction on earthworm activity in tomato cultivated soil and toxicity appraisalOriginal Paper

Pavani Yerra, Ponnusamy Janaki, Alaguthevar Ramalakshmi, Ramasamy Jagadeeswaran, Arjunan Sankari, Palanisamy Murali Arthanari

Plant Soil Environ., 2023, 69(9):429-436 | DOI: 10.17221/223/2023-PSE

While nutrients are administered through various sources and combinations, herbicides are used for pre-plant and pre-emergence weed control in the tomato fields. Therefore, a study was conducted to understand the effects of nutrient fertilisation through inorganic and organic sources along with farmers practice and the application of three herbicides, namely glyphosate, pendimethalin, and metribuzin, individually or in combinations, on earthworm activity in tomato crops. The herbicides caused a significant reduction in earthworm biomass and escapement to the lower 15 cm depth. Application of pendimethalin and metribuzin to soils inorganically fertilised with major and micronutrients resulted in low survival rates and a high ecological risk quotient. The effect was attenuated when farmyard manure was applied. The study suggests that when 2 to 3 herbicides are applied in succession and combined with inorganic fertilisers as nutrient sources, stringent measures like adding organic nutrient sources, applying the correct herbicide combination, etc., must be followed to reduce their toxicity to earthworms. This helps to protect and sustain earthworm activity and biodiversity in the soil.

Evaluation of Rhodotorula growth on solid substrate via a linear mixed effects model

Tereza Krulikovská, Eva Jaro¹ová, Petra Patáková

Czech J. Food Sci., 2011, 29(4):400-410 | DOI: 10.17221/327/2009-CJFS

The growth of Rhodotorula glutinis and Rhodotorula mucilaginosa was studied under optimal and stress cultivation conditions at 10°C and 20°C for 14 days. The method of image analysis was used to determine the size of colonies. The linear mixed effects model implemented in the statistical program S-PLUS was applied to analyse the repeated measurements. Two-phase kinetics was confirmed and the mean growth rates in the second linear phase under various stress conditions were estimated. The results indicated a higher growth rate of R. mucilaginosa than was that of R. glutinis under all cultivation conditions. The highest growth rate of was observed during the cultivation of R. mucilaginosa in media with 2% of NaCl at 20°C. The impact of neglecting the fact that repeated data are not independent and using the classical regression model instead of the mixed effects model was demonstrated through the comparison of the confidence intervals for the parameters based on both approaches. While the point estimates of the corresponding parameters were similar, the width of the confidence intervals differed substantially.

The sensitivity of flower bud thrips, Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae), on cowpea to three concentrations and spraying schedules of Piper guineense Schum. & Thonn. extracts

Alphonsus Mbonu Oparaeke

Plant Protect. Sci., 2006, 42(3):106-111 | DOI: 10.17221/2757-PPS

The extracts of pods of West African black pepper, Piper guineense, at 5, 10 and 20% (w/v), were applied at two, four and six weekly schedules to control the legume flower bud thrips, Megalurothrips sjostedti on flowers of cowpea, Vigna unguiculata. The trials were conducted for 2 years under rain fed conditions in the northern Guinea savanna region of Nigeria. The results showed that the M. sjostedti population was significantly controlled on treated plots compared with the untreated check in both years. The extracts at the 20 and 10% rates and with six or four weekly applications significantly (P < 0.05) reduced thrips pressure on cowpea flowers, were better than the 5% extract at all spraying schedules, and had the same efficacy as the synthetic insecticide treatment. Pod density per plant was significantly higher (P < 0.05) on plots treated with the 20% extract at six or four weekly applications compared to other extract rates and was similar to that of the synthetic insecticide treatment. Thus, the extracts could be a good alternative to the synthetic insecticides on organically managed farms as well as on farms of limited resource farmers in the tropics and subtropics.

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