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Results 1411 to 1440 of 4099:

Impact of fertilisers on five turfgrass mixtures for football pitches under natural conditionsOriginal Paper

Barbara Zanelli, Matej Vidrih, Tanja Bohinc, Stanislav Trdan

Hort. Sci. (Prague), 2021, 48(4):190-204 | DOI: 10.17221/160/2020-HORTSCI

For 2 years (2019-2020), a field experiment to test the activities of different fertilisation schemes on the yield, colour and health status of five different grass mixtures for football pitches was conducted. Two grass mixtures were composed of different varieties of perennial ryegrass, one mixture was composed of varieties of perennial ryegrass and Kentucky bluegrass, one mixture consisted of the species Lolium perenne, Festuca rubra, Festuca arundinacea and Poa pratensis, and the seeds of only one variety of perennial ryegrass were sowed in one plot. Three different fertilisation schemes were included in the experiment. The first scheme (A) contained an inorganic fertiliser with added soil improvers, the second scheme (B) included an organic fertiliser with added soil improvers and the third scheme (C) was composed of an inorganic fertiliser. According to this study, the grass yield largely depends on the soil temperature, amount of precipitation and soil water content, and the occurrence of the fungus Laetisaria fuciformis is influenced by the fertilisation scheme, as the % infection with the fungus was highest when organic fertilisers with low % nitrogen was used. The selection of fertilisers is seen as an important factor for the turfgrass colour.

What does the mandible say about wild boar: Ontogenetic development, sexual dimorphism and habitat preferencesOriginal Paper

Klára Ko¹inová, Richard Policht, Ondøej Matìjka, Vladimír Hanzal, Milo¹ Je¾ek, Tomá¹ Ku¹ta, Vlastimil Hart

J. For. Sci., 2022, 68(2):61-71 | DOI: 10.17221/128/2021-JFS

Wild boar (Sus scrofa L.) is one of the most discussed game species, distributed across Europe, therefore the management of this species is considered important. This management should be based on data presented, population quality and preferences and craniometric dimensions show the development of the individual and its prosperity. A sample of 148 male and 153 female wild boar mandibles was studied to compare differences in craniometric measurements, especially to find out wild boar environmental demands and population trends. The width of the caput mandibulae and angle of the mandible showed significant difference between males and females. Measurements analysed with forest area size and other data also showed that larger craniometric dimensions were reached in hunting areas with at least 200 ha of forested area, which may be due to the wild boar's need for safety and vegetative cover in the first months of piglet development with respect to its home range. The development of young wild boar is dependent on rest and shelter in the first months of life. A forest cover of at least 200 ha appears to be sufficient in this respect. Information on habitat preferences and individual development can lead to improvements in wild boar management.

Measurement of post-dispersal invertebrate seed predation of some relevant weed species in maize fields in Hungary: An ecosystem service provided in crop fields contributing to weed managementOriginal Paper

Mohammed Gaafer Abdelgfar Osman, Mark Szalai, Mihaly Zalai, Zita Dorner, Jozsef Kiss

Plant Protect. Sci., 2022, 58(4):351-359 | DOI: 10.17221/159/2021-PPS

Invertebrate seed predation is a potential ecosystem service that substantially reduces weed seeds in crop fields, decreasing the seedling emergence and, thus, limiting the weed competition next season. It may, thus, be considered as a natural component of the long-term weed management toolbox. This study aimed to measure the post-dispersal invertebrate seed predation levels of the following relevant weed species in Hungarian maize fields: Ambrosia artemisiifolia, Datura stramonium, Chenopodium album, and Echinochloa crus-galli, and to compare the predation levels among them. We hypothesised that invertebrate seed predators will predate weed seeds, but the predation levels may vary with the weed species. Two sampling rounds were performed, in November 2019 and October 2020, in Gödöllõ, Hungary. A total of 100 seed cards/round were placed on the soil surface inside a maize field prior to harvest, 10 m from the field's edge, along 25 transects, with four cards/transect. A distance of 10 m was set between the transects and 1 m between the cards. Twenty seeds of each weed species were glued onto sandpaper (25 × 10 cm, P-60), and a wire mesh was used to exclude vertebrate predators. The seed removal was calculated every 24 h, for seven days in 2019 and for five days in 2020, and then the seed predation was measured using the number of removed seeds on each card. The results showed high seed predation levels on all the seed cards, with an overall average of 85.9 ± 13.7%. Besides, there was a decrease in the % of remaining seeds on the cards starting from the first day after exposure due to seed predation in both years. The optimum exposure period for measuring the seed predation was found to be three to four days, though the number of predated seeds on days 3 and 4 significantly differed between years (P < 0.001), with higher predation rates in 2020 than in 2019. However, no differences were detected in the predation rates among the weed species (P = 0.962, 0.079). These findings indicate the potential contribution of seed predation by invertebrates to weed management in Hungarian maize fields.

Clinical cases of zoonotic Cryptosporidium parvum (subtype IIdA15G1) infections in Korean goatsCase Report

J Kim, K Lee, SG Roh, HY Kim, JW Kim, BJ So, EJ Choi

Vet Med - Czech, 2022, 67(3):156-162 | DOI: 10.17221/212/2020-VETMED

Cryptosporidium parvum is an enteric protozoan, which causes severe diarrhoea in a wide range of vertebrate hosts including ruminants and humans. C. parvum infections are responsible for immense economic losses to the livestock industry; furthermore, the zoonotic spread of the infection may lead to mortality in immunosuppressed humans. In the present study, we report two cases of severe cryptosporidiosis in goat kids in the Republic of Korea. Both cases were afflicted with severe diarrhoea upon presentation; the histopathological examinations revealed atrophied and fused intestinal villi and numerous circular basophilic organisms in the jejunum and ileum. Both cases were diagnosed with cryptosporidiosis based on the results of the histopathological analysis, amplification of the C. parvum gp60 gene, modified Ziehl-Neelsen staining, and C. parvum antigen ELISA. According to the phylogenetic analysis using the C. parvum gp60 gene for the genetic subtypes, the C. parvum isolates were identified as subtype IIdA15G1 with zoonotic potential. This is the first pathological report of caprine cryptosporidiosis induced by C. parvum subtype IId in the Republic of Korea. Considering the clinical manifestations associated with the pathological lesions and the zoonotic significance of these findings, the continuous monitoring and prevention of C. parvum infections in goats are essential for minimising the economic losses in ruminant farms and in maintaining public health safety standards.

Efficiency of European Union wheat producers on world market and analysis of its determinants based on the data envelopment analysis methodOriginal Paper

Pawe³ Boczar, Lucyna B³a¿ejczyk-Majka

Agric. Econ. - Czech, 2022, 68(12):455-463 | DOI: 10.17221/267/2022-AGRICECON

The war in Ukraine has shown that the worldwide food security can be easily shaken. This article focuses on an evaluation of European Union (EU) wheat producers on the world market. Would EU producers maintain their competitive position without direct payments? What changes need to be introduced to improve the position of EU producers on the world market? To answer these questions, a data envelopment analysis has been applied. It is indicated that the competitive position of EU wheat producers is still strongly dependent on direct payments and that mechanisation costs are a key area for improved efficiency in wheat production in Europe.

Preferences in sweet cherry fruits among consumers in Serbia and Bosnia and HerzegovinaOriginal Paper

Gorica Paunoviæ, Ðurað Hajder, Aleksandra Koriæanac, Boris Pa¹aliæ, Ivan Gli¹iæ, Tatjana Jovanoviæ-Cvetkoviæ, Miljan Cvetkoviæ

Hort. Sci. (Prague), 2022, 49(4):189-196 | DOI: 10.17221/8/2022-HORTSCI

The introduction of new varieties in fruit production should consider consumer attitudes regarding the appearance and taste of the fruits. In order to evaluate the consumer attitudes in Serbia and Bosnia & Herzegovina (B&H), on the most important characteristics of cherry fruits, an online survey was conducted with 402 respondents. Participation in the survey was taken by 53.23% of respondents from Serbia and 46.77% from B&H, most of which were women (54.23%). Consumers expressed their views on the most important external (fruit colour, fruit shape, fruit size, presence of a stalk on the fruit, length of the stalk and the presence of damage to the fruit) and internal (fruit taste, fruit firmness) characteristics of the fruit. According to the results, the attitude toward the fruit size, the presence of a stalk and the stalk length, as well as fruit firmness was dependent upon respondents' residence. Both male and female respondents had similar attitudes toward the cherry characteristics except for the fruit taste and the most important cherry characteristics. The age of a respondent influenced the attitude toward the fruit size and the presence of a stalk, as well as the fruit firmness.

Disease resistance of improved MR220 lines against Pyricularia oryzae Cavara and their preliminary agronomic performanceOriginal Paper

Siti Nor Aziemah Mohamad, Mohamad Bahagia Ab Ghaffar, Ahmad Sofiman Othman, Siti Norsuha Misman, Zuraida Abd Rahman, Mohd Shahril Firdaus Ab Razak, Zulkifli Ahmad Seman, Muhammad Fairuz Mohd Yusof, Khairulmazmi Ahmad, Siti Norhidaya Yazid, Habibuddin Hashim

Czech J. Genet. Plant Breed., 2022, 58(1):29-35 | DOI: 10.17221/55/2021-CJGPB

Blast disease caused by Pyricularia oryzae is one of the most destructive fungal diseases of rice in Malaysia. Utilisation of resistant varieties is the most efficient management approach towards reducing yield losses. The line IRTP21683 with the Pi9 gene has shown strong resistance against the isolate MPO988.3 of pathotype P0.0, the most prevalent P. oryzae pathotype in Malaysia. Crossing of IRTP21683 was undertaken with the recurrent parent MR220, a susceptible elite Malaysian rice variety, using a marker assisted backcrossing technique with two simple sequence repeat markers, RM19776 and RM7311, as the tag for the Pi9 gene. Twenty BC3F4 lines with the Pi9 gene were resistant when challenged with MPO 988.3. The cluster analysis based on seven agronomic parameters showed that the resistant BC3F4 lines could be divided into four groups, of which the members in group 1 and 2 have shown comparable or better performance than MR220. Five lines in group 1, B220PI9-3-48, B220PI9-3-76, B220PI9-3-77, B220PI9-3-79 and B220PI9-3-82 showed outstanding yield performance with early maturation.

Optimising the root traits of summer maize to improve nutrient uptake and utilisation through rational application of urea ammonium nitrate solutionOriginal Paper

Zhentao Ma, Baizhao Ren, Bin Zhao, Peng Liu, Jiwang Zhang

Plant Soil Environ., 2022, 68(2):98-107 | DOI: 10.17221/335/2021-PSE

The production of summer maize is greatly affected by nitrogen (N) sources through regulating root growth and distribution. Four N treatments in the field experiment were designed as UAN (urea ammonium nitrate solution was applied under traditional side-dressing method), urea (urea was applied under traditional side-dressing method), UWFI (UAN was applied underwater and fertiliser integration technology) and CK (no N applied). The results showed that the root length density, surface area density and volume of DH605 (mid-late hybrid) and DH518 (mid-early hybrid) under UWFI were higher than other treatments, especially in shallow layers. The root absorption area of each soil layer under N application treatments varied with the growth stage. The grain yield and the accumulations of N, P and K in the shoots showed the trend of UWFI > UAN > urea > CK. Compared with UAN and urea, the nitrogen agronomic efficiency of UWFI treatment increased by 40.5~78.6%, and the nitrogen partial factor productivity increased by 4.75~7.61%. Consequently, rational application of UAN would improve root traits, nutrient uptake and utilisation, and yield of summer maize.

Role of nanoparticles in management of plant pathogens and scope in plant transgenics for imparting disease resistanceReview

Aflaq Hamid, Sahar Saleem

Plant Protect. Sci., 2022, 58(3):173-184 | DOI: 10.17221/37/2020-PPS

Current efforts are focused on the search for efficient methods of pathogen management that will not result in damage to the environment or cause an imbalance in the existing biota. One of the strategies for this is the use of nanoparticles in agriculture for disease management. This review presents a summative view on the various applications of nanoparticles in conferring disease resistance to crops and the possibility of using nanoparticles as carriers of genetic material for the generation of disease resistant crops. Nanoparticles are directly being used for the control of pathogens. Nanoparticles have been used as antiviral, antifungal and antibacterial agents. The nano-encapsulation of pesticides in controlled release matrices is one of the most promising research areas for the future. Nano-encapsulation has been shown to increase the efficiency of pesticides, reduce their volatilisation and decrease the toxicity and environmental contamination in crops. Nano-encapsulated agrochemicals or biomolecules can be engineered to be released in a controlled manner and in a target-specific location. Nanoparticles also have great scope in the field of transgenics vis-à-vis pathogen resistance. The field of agriculture can be revolutionised by the use of nanoparticles for imparting disease resistance in crops. The field is so versatile that the possibilities are endless.

Classification of hazelnuts according to their quality using deep learning algorithmsOriginal Paper

Nizamettin Erbaº, Gökalp Çinarer, Kazim Kiliç

Czech J. Food Sci., 2022, 40(3):240-248 | DOI: 10.17221/21/2022-CJFS

Hazelnut is a product with high nutritional and economic value. In maintaining the quality value of hazelnut, the classification process is of great importance. In the present day, the quality classification of hazelnuts and other crops is performed in general manually, and so it is difficult and costly. Performing this classification with modern agricultural techniques is much more important in terms of quality. This study was based on a model intended to detect hazelnut quality. The model is about the establishment of an artificial intelligence-based classification system that can detect the hidden defects of hazelnuts. In the developed model, the visuals used in the dataset are divided into training and test groups. In the model, hazelnuts are divided into 5 classes according to their quality using AlexNet architecture and modern deep learning (DL) techniques instead of traditional hazelnut classification methods. In this model developed based on artificial intelligence, a very good approach was presented with the accurate classification of 99%. Moreover, the values regarding precision and recall were also determined at 98.7% and 99.6%, respectively. This study is important in terms of becoming widespread information technology use and computer-assisted applications in the agricultural economics field such as product classification, quality, and control.

A case report: Characteristic plain radiographic findings of a displaced abomasum in a heiferCase Report

K Kazama, K Onda, S Arai, Y Shinozuka, K Kawai, K Kaneko, T Kondo, K Yamada

Vet Med - Czech, 2022, 67(1):46-50 | DOI: 10.17221/83/2021-VETMED

A 9-month-old Holstein heifer with a history of severely poor growth presented with diarrhoea. On physical examination, a metallic pinging sound was heard on the simultaneous percussion and auscultation of the left trunk. On the cranial abdominal radiography, the contour of a gas-filled balloon-like abomasum wall was delineated, which elevated to the dorsal abdomen. Radiopaque sand at the bottom of the abomasum had been pulled up caudodorsally by the gas-filled abomasum. After surgery, the gas-filled balloon-like appearance of the abomasum wall disappeared and the radiopaque sand was located in the normal position. To our knowledge, no reports on a displaced abomasum on plain radiographs are available. The radiographic findings described herein are characteristic imaging findings of a displaced abomasum. Abdominal radiography could be a new option as an auxiliary diagnostic approach for a displaced abomasum.

Effect of the vaccination against Shiga toxin 2e in a farm with history of oedema disease, caused by atypical Escherichia coli producing Shiga toxin (STEC)Original Paper

D Sperling, N Isaka, H Karembe, J Vanhara, J Vinduska, N Strakova, A Kalova, IvKolackova, R Karpiskova

Vet Med - Czech, 2022, 67(10):510-518 | DOI: 10.17221/36/2022-VETMED

Oedema disease of weaned piglets is caused by shigatoxigenic Escherichia coli (STEC), typically harbouring the stx2e gene and F18 adhesins. The aim of this study was to assess the effect of a commercially available oedema disease vaccine on the zootechnical performance, mortality and individual antibiotic treatment in a herd, in which non-typical STEC strains without F18 adhesin have been identified. The zootechnical performance (average daily gain, total weight gain), mortality and individual antibiotic treatment were compared between vaccinated and non-vaccinated control piglets in a monocentric field efficacy study, which was performed using two groups in a parallel, randomised design. A significantly higher average daily gain and total weight gain were recorded in the vaccinated piglets in comparison to the controls. The lower morbidity, mortality and antibiotic treatment in piglets in the vaccine group were not statistically significant. As a conclusion, the positive effect of the vaccination was confirmed in the herd with prevalent STEC not harbouring F18 adhesin. The vaccine was, therefore, also effective against oedema disease caused by such unusual STEC isolates, under the conditions of this study.

Effect of plant growth regulators on potato tuber yield and qualityOriginal Paper

Marek Ko³odziejczyk, Kamil Gwó¼d¼

Plant Soil Environ., 2022, 68(8):375-381 | DOI: 10.17221/215/2022-PSE

The aim of the study conducted in 2019-2021 was to determine the effect of biostimulants and growth regulators on the yield size and structure, as well as the chemical composition of edible potato tubers. The cultivar evaluated was Vineta. Asahi SL, Kelpak SL, Aminoplant, Tytanit, gibberellic acid (GA3) and Moddus 250 EC were applied in potato cultivation. The application of biostimulants Asahi SL and Tytanit increased the total and marketable tuber yield, as well as the average tuber weight. Aminoplant had a beneficial effect only on the marketable yield, while Moddus 250 EC decreased tuber yield and mean tuber weight, especially under conditions of high rainfall. Biostimulant Asahi SL caused a decrease in the number of tubers formed, while gibberellic acid stimulated tuberisation. Both preparations increased the share of deformed tubers in the total yield. The effect of biostimulants and growth regulators on the formation of the chemical composition of potato tubers was multidirectional. Tytanit increased protein content in tubers, while the remaining preparations, with the exception of the growth regulator Moddus 250 EC, decreased the amount of this component. GA3 and Moddus 250 EC decreased the content of crude fibre and, in the case of Moddus 250 EC, also the content of mineral components. The highest concentration of nitrates (V) was characteristic for potato tubers treated with Asahi SL and the lowest for those treated with Moddus 250 EC.

Effects of straw return and aeration on oxygen status and redox environment in flooded soilOriginal Paper

Yunhao An, Xiyun Jiao, Zhe Gu, Chuanmeng Shi, Kaihua Liu

Soil & Water Res., 2022, 17(1):29-35 | DOI: 10.17221/87/2020-SWR

To study the effects of straw return and aeration of the water layer on oxygen and redox status in the water column and at different depths in paddy field soil, a short-term incubation experiment was conducted with four treatments: (1) no straw return (NS); (2) straw return without aeration (S); (3) straw return and 30 minutes of aeration per day (SO30); and (4) straw return and 90 minutes of aeration per day (SO90). Compared to NS, S decreased dissolved oxygen (DO) and redox potential (ORP) by 23-58% and 47-53 mV, respectively, and increased active reducing substance (ARS) by 21-46% in the water and soil layers. The aeration treatments increased DO and ORP by 25-120% and 11-86 mV, respectively, and reduced ARS by 5-16% compared to S. The results indicated that straw return to paddy fields exacerbated hypoxia and reducing conditions in the soil. SO90 achieved better effects than SO30 in alleviating the negative impact of straw return by supplying more oxygen, but the effects weakened over time and with soil depth.

Status, challenges and opportunities for apple production in Eastern AlgeriaOriginal Paper

Sanna Abdessemed, Ahmed Fellak, Ala Abdessemed, Awais Khan

Hort. Sci. (Prague), 2022, 49(3):147-153 | DOI: 10.17221/103/2021-HORTSCI

Apples (Malus domestica) are one of the most important temperate fruit crops in the world. Apple production provides, directly or indirectly, employment and improvement in the living standards to millions of people, playing a key role in rural economies. We have conducted an interview-based survey to assess the current status and challenges faced by apple production in the Batna and Khenchela provinces, the two most important apple producing regions of Eastern Algeria. The survey was conducted between March and November 2019. A total of 50 apple growers answered 40 questions, including 13 direct and 20 qualitative questions. A scale ranging from 1 (very low) to 5 (very high) was used as a quantitative measurement for 12 questions. The reliability index of the questionnaire was 0.827. The results identified the main challenges faced by apple growers in Eastern Algeria as: limited access to certified and clean planting material, limited knowledge of disease and pest identification, inadequate access to appropriate disease management, lack of storage facilities and transportation of harvested fruit, and insufficient knowledge of marketing and access to markets. The study also identified a need for the development of cost-effective plant multiplication, horticultural and disease management practices and educational programmes suitable for local conditions to enhance the productivity and economic benefits of apple orchards.

Antagonistic bioagent mechanisms of controlling potato soft rotReview

Richard Osei, Chengde Yang, Lingxiao Cui, Lijuan Wei, Mengjun Jin, Xingying Wei

Plant Protect. Sci., 2022, 58(1):18-30 | DOI: 10.17221/166/2020-PPS

Bacterial antagonists are effective as an alternative to synthetic bactericides in the control of potato soft rot. The use of bioagents reduces the application of synthetic bactericides, which are harmful to humans and the environment. However, the mechanisms of some bioagents, such as some fungi and bacteria, are not yet understood. This paper reviews the current situation of potato soft rot, biological controls, antagonistic bioagents and their mechanisms, application strategies and future directions in today's agriculture. These mechanisms include mycoparasitism, competition, rhizosphere colonisation, synthesis and release of metabolites. Bioagents increased the defensive system of plants by increasing the antioxidants genes, such as superoxide dismutase, peroxidase (POD) and catalase (CAT), and eventually increased the plant growth and yield production.

Addition of seminal plasma proteins effecting the in vitro kinetic properties of canine spermatozoaOriginal Paper

T Tsvetkov, N Petrova, D Daskalova

Vet Med - Czech, 2022, 67(7):365-370 | DOI: 10.17221/73/2021-VETMED

The objective of this study is to evaluate the changes in the motility and kinetic patterns of canine spermatozoa, capacitated and decapacitated, after the addition of seminal plasma protein fractions with different molecular weight. It has been proposed that proteins in seminal plasma support the survival of the spermatozoa and exert a dual effect: capacitation and decapacitation. The seminal plasma from fresh ejaculates was subjected to chromatographic separation and four protein fractions were obtained. Computer-assisted sperm analysis was used to determine the sperm subpopulations with specific motion and kinetic characteristics after incubation with each of the four protein fractions. Two-dimensional electrophoresis of the fractions that exhibit a significant effect on the capacitation and decapacitation was performed. By sperm class analyser, capacitation changes were observed in the sperm subpopulation with a high curvilinear velocity and amplitude of lateral head displacement incubated with the seminal plasma protein fraction with a high molecular weight, which was also reflected in the decreased linearity, straightness, and progressive motility. The sperm subpopulation incubated with the seminal plasma protein fraction with a low molecular weight seemed to undergo a process of decapacitation (decreasing of the curvilinear velocity, increasing of the linearity, straightness and showing progressive motility). Despite their ample panorama of actions, the role of seminal plasma proteins regarding capacitation and decapacitation is still undetermined.

Effect of low expression level of acetyl coenzyme A synthetase gene on secondary metabolite in MonascusOriginal Paper

Lin Lin, Chundan Zhang, Xinman Shao, Pupin Liu, Zhangfei Wu, Yanxia Lu, Hongzhen Guo

Czech J. Food Sci., 2022, 40(6):414-421 | DOI: 10.17221/4/2022-CJFS

Acetyl-coenzyme A (CoA) is a key metabolite produced by the acetyl-CoA synthetase (ACS) gene in energy metabolism and biosynthetic pathways. ACS is speculated to be the branching site of monacolin K (MK) and citrinin production and related to the metabolite production of Monascus. In this study, the ACS expression was inhibited by ribonucleic acid interference (RNAi). T7 was selected for a follow-up analysis of the lowest ACS expression, which was 0.401 times higher than that of the wild-type strain. The effects on the colony morphology of Monascus were determined. The morphological characteristics of mycelia and spores were observed under a scanning electron microscope. The contents of secondary metabolites, namely, MK and citrinin, were determined through high performance liquid chromatography (HPLC). Colour values were measured with a spectrophotometer. Results showed that the low ACS expression could inhibit the growth of Monascus colonies and the hypha and affect the formation and morphology of Monascus M1 spores. It could also inhibit the production of the main secondary metabolites, namely, MK, citrinin, and pigment.

Afforestation of agricultural land affects soil structural stability and related preconditions to resist droughtOriginal Paper

Jiøí Holátko, Ondøej Holubík, Tereza Hammerschmiedt, Jan Vopravil, Antonín Kintl, Martin Brtnický

J. For. Sci., 2022, 68(12):496-508 | DOI: 10.17221/156/2022-JFS

Afforestation is important for the EU forest management strategy. Afforestation of abandoned and marginal arable land is a favourable non-agricultural land use option for climate change mitigation. It may prevent threats of drought or erosion e.g. by affecting the water balance in soil via increased structural stability. The structural stability control in afforested soil is related to i.a. organic matter content, nutrient content, soil reaction, planted tree species prosperity, and amelioration. A four-year field small-plot experiment on afforestation was carried out with Chernozem covered with deciduous (oak), coniferous (pine) or mixed planting, amended with 3 doses (no-application, 0.5 kg×m-2, and 1.5 kg×m-2) of alginite. In 2013 and 2016, soil reaction pHH2O, mean weight diameter (MWD), organic matter content (LOI) and total organic carbon (TOC) were determined and related to the soil structural stability to evaluate the soil precondition to sustain drought twice per vegetation period (spring and autumn). Afforestation significantly improved MWD compared to the field soil between 2013 and 2016 from 1.63 ± 0.04 mm to 1.85 ± 0.05 mm. Tree planting significantly neutralized the soil pHH2O, mixed planting appeared to improve LOI and TOC. Four-year afforestation led also to higher structural stability, less alkaline pH and deciduous tree-related increase in LOI, which may indicate better soil sustainability to drought.

Enhancing fruit quality of three Physalis sp. throughout foliar nutritionOriginal Paper

Diana Nurus Sholehah, Eko Setiawan, Dini Ermavitalini, Miratul Khasanah, Edy Setiti Wida Utami, Sucipto Hariyanto, Hery Purnobasuki

Plant Soil Environ., 2022, 68(5):231-236 | DOI: 10.17221/107/2022-PSE

Foliar nutrients containing macronutrients, micronutrients and a combination of both were applied to Physalis peruviana, P. alkekengi and P. ixocarpa to determine their effect on fruit quality. A randomised complete block design study was conducted in a greenhouse on Madura Island, Indonesia. This study showed significant interactions between Physalis species and foliar nutrition to the physicochemical character of the fruit. Each species responded differently to the given nutrients. The combination of 1 g/L macronutrient (P and K) and 0.0625 g/L micronutrients (Zn, Fe, Cu, B, Mo and Mn) resulted in the highest fruit antioxidant activity, vitamin C, total soluble solids and redness of the three Physalis species. Generally, macronutrients and micronutrients in combination can be recommended to increase the quality of Physalis fruit.

Comparison of the physical properties of soils belonging to different reference soil groupsOriginal Paper

Jan Vopravil, Pavel Formánek, Tomá¹ Khel

Soil & Water Res., 2021, 16(1):29-38 | DOI: 10.17221/31/2020-SWR

Soil properties can be influenced by long-term agricultural management practices as described in pedological literature. In this study, selected physical properties (particle density and bulk density, total porosity, maximum capillary water capacity, minimum air capacity, field capacity, permanent wilting point and available water capacity) of topsoils from different reference soil groups (Cambisols, Luvisols, Fluvisols, Chernozems and Phaeozems, Leptosols, Stagnosols and Gleysols) were sampled and analysed in the years 2016-2017. The topsoil samples were taken from points of so-called S (specific) soil pits to be sampled from the General Soil Survey of Agricultural Soils (GSSAS) which was accomplished in the years 1961-1970. In addition, some of the properties were also compared with those measured during the GSSAS. Recognising the properties, only the particle density, the maximum capillary water capacity, the permanent wilting point and the available water capacity of the topsoil of the individual soil groups were statistically significantly (P < 0.05) different. A comparison of the physical properties with those analysed after more than 40 years was performed, the bulk density increased and the total porosity decreased in the topsoil of the major part of the studied soil groups.

Growth response of seven multipurpose tree species to climatic factors: A case study from northwestern Himalayas, IndiaOriginal Paper

Sucharita Panda, D.R. Bhardwaj, C.L. Thakur, Prashant Sharma, Dhirender Kumar

J. For. Sci., 2022, 68(3):83-95 | DOI: 10.17221/159/2021-JFS

Identification of the species for dendrochronological studies is of great relevance to understand various aspects of climate change. However, in the northwestern Himalayan region, dendroclimatological investigations are confined to conifer species, with broadleaved species being disregarded. Thus, the present study was conducted to assess the growth response of seven multipurpose tree species (MPTs), namely Bauhinia variegata, Celtis australis, Grewia optiva, Paulownia fortunei, Toona ciliata, Ulmus villosa and Melia composita to local climate variables, viz. temperature as well as rainfall (seasonal, monthly, average) and CO2 level by evaluating the climatic signal in tree ring chronologies at Solan district, India (altitude 1 250 m) in the mid-hills of the northwestern Himalayas. The results indicated that only the maximum, rainy season temperature and CO2 level varied significantly (P < 0.05) between 1991 and 2017. Only G. optiva exhibited a significant (P < 0.05) tendency toward increased growth. C. australis has a remarkable negative correlation with temperature variables, viz. average, maximum, spring season, March temperature, whereas T. ciliata exhibits a positive correlation with temperature variables, such as rainy season, average and April temperature. Similarly, winter, total and December rainfall have a profound effect on P. fortunei, while March rainfall adversely affected the growth of B. variegata. On the other hand, G. optiva demonstrated sensitivity to both temperature (February and May) and rainfall variables (winter, February and May). U. villosa recorded a positive correlation with rainfall (autumn and October rainfall) but a negative correlation with temperature variables (maximum and April temperature). Elevated CO2 levels affected only two species (G. optiva, M. composita) out of the seven selected species. Our findings will contribute to a better understanding of the climate growth relationships of investigated tree species, as a result, to more accurate projections of the effects of climate change on these MPTs and directing future studies.

Obituary of doc. Ing. Dr. Jaroslav Benada, CSc. (1928-2022)Biographical Notice

Vìra Kroftová, Marie Váòová

Plant Protect. Sci., 2022, 58(4):365-368 | DOI: 10.17221/70/2022-PPS

Patellar luxation and concomitant cranial cruciate ligament rupture in dogs - A reviewReview

M Candela Andrade, P Slunsky, LG Klass, L Brunnberg

Vet Med - Czech, 2022, 67(4):163-178 | DOI: 10.17221/111/2021-VETMED

A patellar luxation and concomitant cranial cruciate ligament rupture is a common pathology in dogs. Diagnosis is based on clinical evidence of a patellar luxation and stifle joint instability. However, diagnostic imaging is required to assess the number of skeletal deformities and signs of instability. Surgical options include both soft tissue and osseous techniques, although, in most cases, a combination of multiple procedures is necessary to correct the patellar luxation and restore the stifle joint stability. Complication rates are generally low, but can include reluxation and implant-associated complications. This article describes the patellar luxation and cranial cruciate ligament rupture signs in dogs, including the clinical presentation and diagnosis, and discusses current treatment options.

Changes in the comparative advantage of Polish dairy productsOriginal Paper

Piotr Bórawski, Aneta Be³dycka-Bórawska, Andrzej Parzonko, Tomasz Rokicki, Lisa Holden

Agric. Econ. - Czech, 2022, 68(12):464-475 | DOI: 10.17221/322/2022-AGRICECON

Competitiveness is one of the key concepts in economic sciences, andit is defined as the ability of businesses to compete in the market. The aim of this study was to assess the competitiveness of dairy products in Poland. The competitiveness was evaluated in a macroeconomic approach by analysing the exports, imports, and the trade balance. The results were processed and presented with the use of tabular, graphic, and descriptive methods. After Poland joined the European Union (EU) in 2004, one of the key goals was to improve the quality, storage, and applicability of dairy products, and to promote trade in milk and dairy products. The Polish dairy industry reported a positive balance in the foreign trade of milk and dairy products, which contributed to positive values in the competitiveness indicators of dairy products. The values of the export specialisation index (SI), export revealed comparative advantage (XRCA), relative import penetration index (MRCA), foreign trade coverage ratio (CRK), and the Grubel-Lloyd intra-industry trade index (IITk) were positive, which attests to the competitiveness of Polish dairy products. We proved that the COVID-19 pandemic had an impact on the competitiveness of dairy enterprises in Poland.

Morpho-molecular diversity study of rice cultivars in BangladeshOriginal Paper

Md Babul Akter, Azad Mosab-Bin, Mohammad Kamruzzaman, Reflinur Reflinur, Nazmun Nahar, Md Sohel Rana, Md Imdadul Hoque, Md Shahidul Islam

Czech J. Genet. Plant Breed., 2022, 58(2):64-72 | DOI: 10.17221/69/2021-CJGPB

Rice is one of the frontline cereals in the world and the major cultivated crop in Bangladesh. A total of eleven simple sequence repeats (SSRs) and thirteen sequence-tagged site (STS) markers were used to characterize twenty-four rice cultivars in Bangladesh. Twenty-four markers generated 60 alleles with 2.5 alleles per locus. The average polymorphism information content (PIC) value was 0.40, while the mean value of heterozygosity, gene diversity, and major allele frequency were recorded as 0.10, 0.48 and 0.62, respectively. However, the SSR markers showed more specificity and a higher discrimination power than the STS markers. The cluster analysis displayed four major clusters with a genetic similarity coefficient value of 0.73. The morphological analyses of the grain identified that Binadhan-20 and BRRI dhan34 had the longest and the shortest seed size, respectively, with a variable correlation between the seed length, width and length/width ratio. The phenol reaction test distinguished seven cultivars as japonica and seventeen cultivars as indica or an intermediate type. All these results regarding the phenotypic data and marker information will be useful for parental selection in modern rice breeding programmes.

Slow-release nitrogen fertiliser suitable for one-time fertilisation of spring maize in Northeast ChinaOriginal Paper

Xiaojie Feng, Xiumei Zhan, Xiaori Han, Kun Chen, Jing Peng, Xuexin Wang, Dongyao Shang

Plant Soil Environ., 2021, 67(3):164-172 | DOI: 10.17221/162/2020-PSE

Slow-release nitrogen fertiliser can potentially increase crop production and improve fertiliser nitrogen use efficiency. However, it is unclear that are suitable for different regions and crops in the northeast of China. Therefore, according to different soil and climate characteristics, we investigated the synchronised relationships between nitrogen slow release fertiliser and nitrogen maize requirements. Experiments were conducted at Shenyang Agricultural University, Liaoning province, Northeast China, from 2016 to 2017. Stabilised fertiliser treatments increased grain yield, nitrogen use efficiency and nitrogen accumulation at each maize growth stage. Grain yield increased by 2.32% and 11.33% (2016), and 1.55% and 7.87% (2017), respectively, when compared with the urea CK1 (233 kg N/ha) and CK2 (210 kg N/ha) treatments. Additionally, during the growth period of the stabilised fertiliser treatment, the stability of the synchronisation relationship between nitrogen absorption and absorption of spring maize was significantly higher than other treatments, and the effect was the best. Therefore, we conclude that the stabilised fertiliser is the most suitable option for promotion and application in spring maize in Northeast China.

Adaptability responses to drought stress in the oak species Quercus petraea growing on dry sitesOriginal Paper

Bayartaa Nyamjav

J. For. Sci., 2022, 68(11):459-472 | DOI: 10.17221/123/2022-JFS

We studied sessile oak (Quercus petraea) growing on six dry sites to understand adaptability responses to drought stress. Pedunculate oak (Quercus robur) on a moderately dry site was tested in parallel. We analyzed accessions from mostly dry sites that were less sensitive to soil drought and found that the growth performance ranking was not the same before and after treatment. We used phenological plasticity approaches to study seed development and plant development before and after drought: the treatments included stem length, root length, and collar diameter, as well as dry above- and below-ground biomass performance. Additionally, after drought treatment, osmolytes and root surface were tested in Q. petraea. According to the analyses and results, the ranked sites did not maintain their ranking status, with Q. petraea exhibiting different rates of growth during each developmental stage from seed development until the end of the treatment of plant material. The smallest seeds came from the driest site, which may indicate more adaptability to drought stress. After drought treatment, large differences were found between the dry biomass performance, stem length, root length, and collar diameter of oaks grown on different sites. The osmolality of Q. petraea on most of the dry sites was higher under the reduced treatment than under the optimal treatment, but not significantly. After drought treatment, all accessions - and especially those from the driest site - showed large differences in growth performance between the treatments. The relationship between seed weight and seedling development before and after drought treatment differed according to the developmental stage.

Effect of endophytic bacterium, Stenotrophomonas maltophilia JVB5 on sunflowersOriginal Paper

Bartholomew Saanu Adeleke, Ayansina Segun Ayangbenro, Olubukola Oluranti Babalola

Plant Protect. Sci., 2022, 58(3):185-198 | DOI: 10.17221/171/2021-PPS

Identifiable endophytic bacteria with plant growth-promoting traits promise to ensure sustainable agriculture. However, information on the versatility and exploration of sunflower-associated bacteria as bioinoculants is less studied. Here, we present the whole-genome sequence and annotation of Stenotrophomonas maltophilia JVB5 isolated from the sunflower root endosphere from the North West province, South Africa. The whole-genome analysis revealed a genome size of 4 771 305 bp, a sequence read count of 8 764 890, a 66% guanine-cytosine content, 57 tRNAs, 268 contigs, and 4 160 protein-coding genes with functions in various metabolic pathways. Pathways involved in the indole acetic acid production were found in the S. maltophilia JVB5 genome. The whole-genome annotation predicted notable genes involved in bacterial colonisation, antibiosis, and plant growth promotion. The predicted genes are involved in the sulfur metabolism, and the oxidative stress may enhance the plant growth promotion and boost plant the resistance to stress. Upon inoculation, S. maltophilia JVB5 efficiently colonised the sunflower root under greenhouse conditions with a significant improvement on the wet plant weight of 437.20 g compared to the uninoculated control with a 331.04 g wet weight. The genomic analysis revealing specific functional genes in the bacteria genome suggests their bioprospecting in agriculture. Hence, understanding the mechanisms employed by S. maltophilia JVB5 based on the predicted multifunctional genes will help harness their bioresource in sustainable plant health.

Treatment of extremity fractures in 20 wild birds with a modified Meynard external fixator and clinical assessment of the resultsOriginal Paper

K Gerbaga Ozsemir, K Altunatmaz

Vet Med - Czech, 2021, 66(6):257-265 | DOI: 10.17221/5/2020-VETMED

The aim of this study is to evaluate the outcome of the treatment on twenty wild birds presenting with fractures that were stabilised with modified Meynard external fixators. The study material consisted of a total of twenty birds of eight different species, six white storks (Ciconia ciconia), one eastern imperial eagle (Aquila heliaca), one European honey buzzard (Pernis apivorus), one long-legged buzzard (Buteo rufinus), three common buzzard (Buteo buteo), one northern goshawk (Accipiter gentilis), one Armenian gull (Larus armenicus), and six yellow-legged gulls (Larus michahellis), which were diagnosed with fractures in their extremity bones following clinical and radiological examinations. The lesions of the twenty cases evaluated in the study were diagnosed as humerus fractures in nine cases, ulna fractures in three cases, tibiotarsus fractures in seven cases and a femur fracture in one case. The external fixators were removed between weeks five and nine postoperatively. While healing was seen in twelve of the twenty evaluated cases, the complete functional recovery occurred in six of these and they were released into nature. It was concluded that modified Meynard external fixator, which was made applicable for fractures in birds, could be an alternative method for fracture treatments in wild birds.

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