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Results 391 to 420 of 1934:

Evaluation of plant growth regulators for control of dormancy in apricot (Prunus armeniaca L.)Original Paper

Tomá¹ Neèas, Eli¹ka Zezulová, Ivo Ondrá¹ek, Tomá¹ Kiss, Jan Námìstek

Hort. Sci. (Prague), 2023, 50(3):175-188 | DOI: 10.17221/135/2022-HORTSCI


In an environment where fruit production is increasingly affected by unpredictable weather patterns, it is important to look for ways to minimise the impact of climate change on production. Under Central European conditions, a limiting factor for apricot (P. armeniaca L.) and Asian plum (P. salicina Lindley) growing in certain years is the occurrence of late spring frosts. One measure to eliminate their impact is to delay the actual flowering of the trees. This can be done by breeding or just by applying various plant growth regulators (PGRs). In our experiment, the effect of a total of 6 active substances in 16 different concentrations was evaluated. The results show that the application of Ethrel-based mixtures (concentrations of 0.05 and 0.5%) had the greatest influence, delaying flowering by up to 3-5 days, but also had the most destructive effect on tree health. The application of the commercial product Rhodofix (NAA - 0.3%) and the application of a proprietary mixture based on NAA 1.0% did not have a very significant effect, with a delay in flowering of just 2 to 3 days. One interesting finding was that the application of the above products had a statistically significant effect on the ripening date of apricot fruit, with a difference of up to 4 days.

The nutrients, flavour, and antioxidant analysis of different parts of Dictyophora rubrovalvataOriginal Paper

Yanli Wang, Xiuqin Han, Qinglin Guan, Xue Wei, Xiaoli Zhou

Czech J. Food Sci., 2024, 42(1):10-20 | DOI: 10.17221/130/2023-CJFS


This study evaluated the nutrients, flavour and antioxidant capacity in the embryo, colloid and fruiting body of Dictyophora rubrovalvata. The embryo had the highest protein [2.91 ± 0.39 g·(100 g)–1] and polysaccharides (17.44 ± 1.49 mg·g–1), the fruiting body had the highest total phenol content (0.87 ± 0.17 mg·g–1), the colloid was rich in minerals [1.57 ± 0.16 g·(100 g)–1]. The antioxidant capacity of the embryo was higher than that of the other parts, in terms of different solvents, the antioxidant capacity of D. rubrovalvata extracted with ethanol was higher than that of water. 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and reducing capacity were positively correlated with polysaccharides, proteins and polyphenols. The free amino acid content ranged from 7.44 to 11.52 mg·g–1, the distribution was fruiting body > embryo > colloid, of which glutamic acid content was the highest, and the flavour characteristics were mainly umami and sweetness. The nucleotide content of fruiting body and embryo was higher than in the colloid. In addition, the compositions of volatile flavour compounds were identified by headspace solid-phase microextraction gas chromatography-mass spectrometry (HS-SPME-GC-MS), mainly alcohols, aldehydes and ketones, their distributions varied greatly among the three samples. These results indicated that different parts of D. rubrovalvata have different nutritional characteristics, the fruiting body has a high content of volatile and non-volatile components, the embryo and the colloid have good functional activity, laying a foundation for the functional development and comprehensive utilisation of D. rubrovalvata.

First records of Glyptapanteles liparidis (Braconidae, Microgastrinae) and Gelis areator (Ichneumonidae, Cryptinae) in SloveniaShort Communication

Vladimir ®ikiæ, Tanja Bohinc, Christos Athanassiou, Paraskevi Agrafioti, Matilde Eizaguirre, Drago Trajber, Stanislav Trdan

J. For. Sci., 2024, 70(1):24-30 | DOI: 10.17221/106/2023-JFS

Lymantria dispar, a well-known defoliating pest species, also presents a health challenge due to the allergenic potential of its hairs, making it interesting to study from various perspectives. As chemical control methods decline in popularity, the search for effective natural enemies of this pest, such as predators, parasites and parasitoids, are expanding. On this occasion, we report the discovery of the primary parasitoid Glyptapanteles liparidis and the secondary parasitoid Gelis areator for the fauna of Slovenia. Illustrations and a short biology are given for both species.

Dietary levels of soluble and insoluble fibre sources for young slow-growing broilersOriginal Paper

Nayanne Rodrigues de Oliveira, Fabiana Ramos dos Santos, Maura Regina Sousa Silva, Isadora da Silva Rissato, Geyniane Carvalho Roque, Carollynne Martins Silva, Hemylla Sousa Santos Barros, Nathan Ferreira da Si

Czech J. Anim. Sci., 2024, 69(4):139-154 | DOI: 10.17221/84/2023-CJAS

This study aimed to evaluate the effects of dietary levels of soluble and insoluble fibre on the performance and digestive development of slow-growing broilers during the starter period. A total of 400 one-day-old Isa LabelTM male chicks were used that were distributed in a completely randomized factorial design 2 × 2 + 1 (inclusion of 2% or 4% of corncobs as a source of insoluble fibre IF and citrus pulp as a source of soluble fibre (SF); and a control treatment) with eight replicates of 10 birds each. The addition of IF to diets improved the weight gain and feed conversion of broilers at 7 and 21 days of age. Both fibre sources added to diets resulted in higher relative weights of proventriculus + gizzard, liver, small and large intestine. The diets containing an SF source presented positive effects on the duodenal mucosa. In addition, positive effects on the caecal villus to crypt ratio were observed in broilers fed diets containing different types of fibre. It is concluded that dietary inclusion of IF up to 4% maintains the performance, nutrient metabolism and improves the development of the proventriculus + gizzard in slow-growing broilers. However, for improving the morphological and histomorphological parameters of slow-growing broilers in the starter phase the addition of SF sources is recommended.

Biochar addition enhances annual carbon stocks and ecosystem carbon sink intensity in saline soils of the Hetao Irrigation District, Inner MongoliaOriginal Paper

Ruxin Zhang, Zhongyi Qu, Wei Yang, Liping Wang, Dongliang Zhang, Lu Liu, Junjie Li, Zhimin Zhang

Plant Soil Environ., 2024, 70(5):263-275 | DOI: 10.17221/121/2023-PSE

Biochar has demonstrated potential for stabilising high yields and sequestering carbon in dryland farmland, but it is unclear whether biochar affects the carbon sequestration capacity and carbon balance of annual farmland ecosystems. For this purpose, we conducted a plot control trial in salinised farmland in 2019–2021, where we set three treatments, control, and two biochar rates, 0 (CK), 15 (B15), and 30 t/ha (B30). The results showed that biochar application decreased soil organic carbon stocks in the early part of the experiment (first freeze and freeze period); these increased in the later part, and overall, the biochar treatments increased soil organic carbon storage by 3–6% compared with the control. Compared with the control (CK), biochar inhibited the total soil respiration rate and microbial respiration rate significantly (P < 0.05) during the crop growing period compared with the freeze-thaw period. After two years of freeze-thaw cycling, biochar application increased sunflower plant carbon sequestration and net primary productivity and suppressed total soil microbial respiration, thereby increasing net ecosystem productivity. Therefore, the application of biochar is conducive to carbon sequestration in farmland ecosystems and presents a carbon sink effect, thus being a good choice for improving the soil carbon pool and reducing emissions in the northern dry zone.

The use of enzyme assays to assess soil biodiversity of diverse land use systems integrating trees – Preliminary researchOriginal Paper

Magdalena Myszura-Dymek, Barbara Futa, Gra¿yna ¯ukowska, Klaudia Ró¿owicz, Norbert B³oñski

Soil & Water Res., 2024, 19(2):122-131 | DOI: 10.17221/16/2024-SWR

Most studies of agroforestry system biodiversity focus on assessing visible, aboveground biodiversity, largely ignoring soil biodiversity. To fill this gap, a preliminary assessment of soil biodiversity in an agroforestry system was undertaken based on changes in soil enzyme activity. The study was conducted in the village of Maziarnia, Lubelskie Voivodeship, Poland, Europe. Arable fields with spring wheat, mid-field trees and perennial mixed forest were selected for the study. Soil material for physicochemical analyses (pHH2O, pHKCl, sorption properties, total carbon and total nitrogen) and biochemical analyses (activity of acid phosphatase, alkaline phosphatase, urease and dehydrogenases) was collected in the spring and autumn of 2022. The present study showed that the biochemical properties of the soils of the selected study sites varied depending on the type of ecosystem determining habitat conditions. Each ecosystem that makes up the agroforestry system studied is characterised by a distinctive microbiome composition and its own level of enzymatic activity. The obtained results support the thesis that agroforestry systems significantly increase the functional diversity and overall biodiversity of agricultural landscapes. However, a full, objective characterisation of the processes taking place in agroforestry systems requires long-term monitoring.

Integrated effect of irrigation rate and plant density on yield, yield components and water use efficiency of maizeOriginal Paper

Miodrag Tolimir, Branka Kresoviæ, Katarina Gajiæ, Violeta Anðelkoviæ, Milan Brankov, Marijana Dugaliæ, Bo¹ko Gajiæ

Plant Soil Environ., 2024, 70(8):475-482 | DOI: 10.17221/155/2024-PSE

We investigated, under field conditions and during four years (2018–2021) the effects of five irrigation levels (T1: 100% of crop water requirement; T2: 80% of T1; T3: 60% of T1; T4: 40% of T1, and T5: 0% of T1 – rainfed) in interaction with three planting densities (PD1: 54 900, PD2: 64 900, and PD3 75 200 plants/ha) on the yield, yield components and water use efficiency (WUE) of maize in Srem, Serbia. The results indicate a large year-to-year variability, mainly due to the total amount and distribution of rainfall. Water regime and PD interacted significantly. Irrigation increased grain yield 28, 34, 30 and 18% for treatments T1, T2, T3 and T4, respectively, compared to the T5; and significantly influenced the yield components. Planting density had significantly lower effects on grain yield compared to irrigation (+1.4–1.8%). WUE is maximised (3.436 kg/m3) at T4 under 75 200 plants/ha. Grain yield and WUE increased significantly with increasing PD, while the number of grains per ear and the weight of 1 000 grains decreased with increasing PD. In conclusion, limited irrigation at T2 under PD2 may be a viable method to maximise production efficiency and maize yield under the environmental conditions of this study and at sites with similar soil and climatic conditions.

Temperature dependence of nitrate uptake kinetics in Triticum aestivum L. and Triticum dicoccon Schrank cultivarsOriginal Paper

Ivana Raimanová, Jana Wollnerová, Jan Haberle, Svoboda Pavel

Czech J. Genet. Plant Breed., 2024, 60(4):212-222 | DOI: 10.17221/41/2024-CJGPB

Temperature is a key parameter that influences the uptake and subsequent utilization of nitrogen by plants. Both suboptimal and supraoptimal temperatures can impair nutrient uptake. The close relatives of bread wheat provide a possible source for breeders to increase stress tolerance. The effect of the increasing temperature (5, 10, 15, 20 and 30 °C) on nitrate uptake and metabolism in five modern spring cultivars of bread wheat (Triticum aestivum L.) and two cultivars of emmer wheat (Triticum dicoccon Schrank), was monitored. Wheat plants were grown under controlled conditions in hydroponics. The parameters of Michaelis-Menten kinetics, maximum uptake rate (Vmax), the Michaelis constant (Km) and selected characteristics of nitrate metabolism, the activity of nitrate reductase (NR) and contents of nitrate in leaves were observed. The effect of temperature was significant for all studied traits except Km, while the cultivar factor was significant for Vmax, Km, NR and root/shoot ratio (R/S). Emmer wheat cultivar Rudico had significantly higher Vmax at 5, 15, 20 and 30 °C than all bread wheat cultivars, on average 7.07, in comparison with 4.09–4.43 μmol NO3/g FW/h in bread wheat cultivars. Emmer wheat Rudico and Tapiruz had significantly higher Km (on average, 41.59 and 47.22 μM NO3) than bread wheat cultivars (27.59–33.44 μM NO3). Differences in the studied kinetic parameters of nitrate uptake offer the possibility of using T. dicoccon genotypes in breeding for better nitrogen use efficiency.

Study on the main physicochemical characteristics of different plant cultivation substrates and their effects on standard rosesOriginal Paper

Yingguo Wang, Tingting Cao, Juan Li, Hang Zhou, Haiou Zhang

Plant Soil Environ., 2024, 70(12):799-808 | DOI: 10.17221/258/2024-PSE

Standard roses are a widely used ornamental plant in urban landscapes, valued for their attractive flowers and adaptability to various environmental conditions. This study investigated how different substrate types affect the growth and development of standard roses and their potential to improve the ecology of urban landscapes. Nine substrate conditions (rotted corn stover, decomposed shiitake mushroom residue, perlite, and combinations) were compared with field soil as a control treatment. The physical and chemical characteristics of each substrate were analysed, and the growth and development of standard rose plants were observed over six months. The results indicated that the substrate T4 (70% rotted corn stover, 15% decomposed shiitake mushroom residue, 15% perlite) achieved the highest evaluation index, leading to superior plant growth compared to other substrates. This combination provided optimal water retention, aeration, and nutrient supply, making it the most effective substrate for cultivating standard roses. Additionally, the use of these substrates can improve soil quality and reduce environmental pollution, offering a sustainable option for urban landscape management.

Soil quality assessment using SAS (Soil Assessment System)Original Paper

Daniel Toth, Jaroslava Jankù, Adéla Marie Marhoul, Josef Kozák, Mansoor Maitah, Jan Jehlièka, Luká¹ Øeháèek, Richard Pøikryl, Tomá¹ Herza, Jan Vopravil, David Kincl, Tomá¹ Khel

Soil & Water Res., 2023, 18(1):1-15 | DOI: 10.17221/141/2022-SWR

The paper proposes a new soil evaluation system using the principle of the Saaty method. The Saaty method has been modified and named Soil Assessment System (SAS). Significance weights are assigned to individual soil characteristics (indicators). This provides a more detailed differentiation of the significance of the indicator on soil quality and a more accurate assessment, especially in marginal cases where the assessment by the methods used so far has not been fully conclusive. In addition to physico-chemical properties, other criteria are taken into account to assess not only productional but also non-productional functions. The possibility of using indicators referring to a broader context (e.g., soil sealing value) is also important, thus enabling a comprehensive assessment of the quality of the land. This results in points for individual sampling locations. Soils are categorized according to the number of points and results are shown on maps.

Dietary supplementation of natural tannin relieved intestinal injury and oxidative stress in piglets challenged with enterotoxigenic Escherichia coliOriginal Paper

Qian Zhang, Lin Zhang, Linxiao Du, Yanyan Zhang, Dan Yi, Di Zhao, Binying Ding, Yongqing Hou, Tao Wu

Czech J. Anim. Sci., 2023, 68(7):296-305 | DOI: 10.17221/148/2022-CJAS

This study is to explore the effects of natural tannin (NBT) on intestinal injury in piglets challenged with enterotoxigenic Escherichia coli (ETEC). Thirty-two 7-day-old piglets were divided into four groups: I) control group, piglets were fed a basic diet without challenge; II) ETEC group, piglets were fed a basic diet and challenged with enterotoxigenic E. coli; III) NBT + ETEC group, piglets were fed a basic diet with supplementation of 2 g/kg NBT and challenged with enterotoxigenic E. coli; and IV) ZnO + ETEC group, piglets were fed a basic diet with supplementation of 3 g/kg ZnO and challenged with enterotoxigenic E. coli. Results showed that diarrhoea rate was significantly increased in ETEC group, whereas it was decreased after NBT supplementation (P < 0.05); NBT supplementation significantly increased the average daily gain of ETEC-infected piglets. ETEC group showed damaged intestinal morphology (as indicated by decreased villus height, surface area and increased crypt depth) and barrier function (as indicated by decreased d-xylose content and increased diamine oxidase activity), induced oxidative stress (as indicated by increased myeloperoxidase activity) while supplementation of NBT had an obvious impact on the recovery of intestinal function and alleviated the oxidative damage. Further analysis showed that NBT could decrease the expression of genes related to intestinal injury (matrix metalloproteinase-3), and specifically upregulate the expression of oxidative stress-related genes (nuclear factor erythroid 2-related factor 2 and hypoxia inducible factor-1). Overall, dietary supplementation of NBT relieved intestinal injury and oxidative stress in piglets challenged with ETEC. NBT could be an alternative to ZnO as a feed additive in piglet diet.

Verification of resistance loci pyramiding in popular interspecific grape varieties using SSR markersOriginal Paper

Martin Hádlík, Miroslav Baránek, Ivana Flaj¹ingerová, Kateøina Baránková

Czech J. Genet. Plant Breed., 2024, 60(1):34-41 | DOI: 10.17221/43/2023-CJGPB

Fungal pathogens Plasmopara viticola (Berk. & M.A. Curtis) Berl. & De Toni (downy mildew) and Erysiphe necator Schwein. (powdery mildew) represent the biggest threats for grape growers worldwide. Under suitable conditions, these pathogens can spread very quickly through vineyards and cause significant damage. The most ecological way to reduce the possibility of infection in vineyards is growing interspecific genotypes which are able to suppress these pathogens and stop the spread of infection. With this in mind, 9 international and 11 Czech grapevine genotypes were analysed in order to genotype the resistance loci present in them. As a tool a set of SSR markers linked to known loci of resistance to downy and powdery mildew was used. Namely, presence of four loci responsible for resistance to Plasmopara viticola (Rpv3, Rpv4, Rpv7, and Rpv10) and two for Erysiphe necator (Ren3 and Ren9) loci were analysed with respective SSR markers. By this way the degree of resistance gene pyramiding was newly assessed in all analysed cultivars and their perspectives in grapevine breeding are discussed.

Effects of controlled irrigation on global warming potential based on CH4, N2O and CO2 fluxes in plateau paddy fieldOriginal Paper

Shufang Wang, Hongchun Bi, Liping Wang, Jing Wang, Ying Wang, Lihong Chen

Plant Soil Environ., 2024, 70(9):535-542 | DOI: 10.17221/453/2023-PSE

A suitable irrigation pattern is of great significance for reducing greenhouse gas emissions. In this study, field experiments and a denitrification-decomposition (DNDC) model were used to study the global warming potential based on CH4, N2O and CO2 fluxes under flooding irrigation and controlled irrigation in paddy fields in the Erhai Lake basin. The results showed that the average value of CH4 flux under controlled irrigation was lower than that under flooding irrigation, with a reduction range of 43.21% to 48.88%, however, the average value of the N2O and CO2 fluxes from paddy field under controlled irrigation were higher than those under flooding irrigation. Controlled irrigation patterns can significantly reduce the global warming potential in paddy fields based on CH4, N2O and CO2 fluxes. Controlled irrigation can effectively reduce the global warming potential per unit yield. For water management in the Erhai Lake basin, it is recommended the controlled irrigation treatment of soil moisture with an upper limit of 100% and a lower limit of 75–85% with irrigation, and a maximum surface water depth of 150–200 mm lasting for five days after precipitation from the jointing-booting stage to the milk stage.

Six-year results on the effect of organic mulching on potato yield and tuber damagesOriginal Paper

Anikó Südiné Fehér, Mihály Zalai, György Turóczi, Ferenc Tóth

Plant Soil Environ., 2024, 70(1):11-16 | DOI: 10.17221/353/2023-PSE

Due to its positive effects, mulching with organic matter is a popular soil conservation tool. However, opinions are divided on the effects of mulching on pests and pathogens. Our research aimed to investigate the effect of organic mulch on potato tuber damage caused by soil-dwelling pests and soil-borne pathogens. Therefore, mulching trials were carried out at four sites over six years, comparing the effects of straw, walnut leaves, mixed leaves, compost and two sowing methods (in soil, on soil surface, and under mulch). The total yield of the mulched plots was equal (2013, 2014) or significantly higher (2015, 2016, 2017, 2018) than the control, while the weight of damaged tubers did not increase. Total yield was higher in plots mulched with compost, walnut leaves and mixed leaves than in control and straw-mulched plots. The seeding method had no effect on yield or tuber damage for any of the cover crops. Mulching potatoes with organic matter, especially compost and leaves, is recommended, as their application positively affected yield but did not increase the number of damaged tubers. Sowing potatoes under mulch can reduce the digging work and cutting damage without reducing the yield.

The effect of exogenous application of salicylic acid and ascorbic acid on forage quality and yield of maize (Zea mays L.) under water deficit conditionsOriginal Paper

Navvab Haji Hassani Asl, Farhad Farah Vash, Mohsen Roshdi, Bahram Mir Shekari, Mehdi Gaffari

Plant Soil Environ., 2024, 70(3):142-153 | DOI: 10.17221/181/2023-PSE

The effects of the foliar application of plant growth regulators (PGRs), salicylic acid (SA) and ascorbic acid (AA) were studied on yield and some qualitative traits of corn silage under drought stress in a field experiment conducted in the Agricultural and Natural Resources Research Center of Khoy in two consecutive years. The experiment was performed in four replications as a split plot in a randomised complete blocks design. Irrigation treatment was in two levels, ir75 and ir150, and the foliar applications of SA and AA at seven levels (100, 200, and 300 ppm, as well as a control treatment). The amount of water consumed in ir75 and ir150 during 10 and 7 times irrigation was 6 000 and 4 200 m3/ha, respectively. Malondialdehyde (MDA) content was increased over the plant growth period in both ir75 and ir150, but with the difference that its range was 3.72 to 12.9 nmol/g FW (fresh weight) under ir75 and 12.5–109.5 nmol/g FW under water shortage conditions. The results show that ir150 decreased plant height, forage yield, ear weight, and nitrogen uptake versus ir75. In plants treated with SA and AA, nitrogen uptake and chlorophyll content increases (45–33%) were observed compared to the control plants under ir75. In most traits, there was no significant difference between AA and SA levels, but plants treated with SA100 showed higher protein yield, dry forage yield, and ear yield.

Innovation for development of sustainable integrated plantation polyculture on dry land: Using Structural Equation ModellingOriginal Paper

Rina Nuryati, Lies Sulistyowati, Trisna Insan Noor, Iwan Setiawan

Agric. Econ. - Czech, 2024, 70(6):291-308 | DOI: 10.17221/287/2023-AGRICECON

The land in the South Tasikmalaya Regency is dominated by dry land with a steep and hilly land contour. In addition, the area has a shallow soil solum, so it has a high potential for erosion and landslides. Therefore, it is necessary to innovate an integrated cultivation system that is economically feasible, but still maintains environmental sustainability. In this research, the aim is to formulate a model for the development of integrated plantation polyculture farming (IPPF) for the welfare of farmers. The method in this study uses a mixed method design. The location of the research carried out is in the Tasikmalaya Regency. The data used are the results of interviews and questionnaires to 250 IPPF farmers. The data used were obtained by multistage cluster random sampling. The sustainable IPPF development model was analysed using Structural Equation Modelling (SEM). This analysis is used to determine the various potential capital factors for agricultural development on the sustainable development of the IPPF and farmers’ welfare. The results of the study show that the potential development capital [natural resources (SDA) capital, economic capital, socio-cultural capital, physical capital, and multifunctional IPPF], jointly or partially affect the IPPF sustainability. Human resource capital has no effect on the sustainable IPPF development, while the sustainable IPPF development affects the farmers’ welfare levels, and the potential agricultural development capital and its multifunctionality affect the sustainable IPPF development and farmers’ welfare. The IPPF development model that improves the welfare of farmers is carried out through the development of specific local superior commodities, increasing the added value and cooperation, developing access to credit, regenerating farmers, sustainable assistance and infrastructure improvements. The results of this study are expected to be a reference for the government in improving IPPF sustainability to achieve the welfare of its farmers. Apart from that, the model that has been developed can make a contribution to science in the form of a comprehensive analysis of the factors that influence the sustainability of IPPF.

Temporal changes of soil characteristics on Lítov spoil heap, Czech RepublicOriginal Paper

Enkhtuya Enkhtaivan, Oldøich Vacek, Petra Vokurková, Marko Spasiæ, Radim Va¹át, Ondøej Drábek

Soil & Water Res., 2024, 19(3):133-143 | DOI: 10.17221/17/2024-SWR

This study aimed to examine the changes in selected soil properties at Lítov spoil heap (Sokolov, Czech Republic) and compare the current situation with the situation described twenty years ago. A total of 110 soil samples were taken at Lítov at the same sites as in 1998. The analyses of basic soil characteristics involved: exchangeable soil pH (pHKCl), organic carbon content (Cox), quality of humic substances (A400/A600), exchangeable acidity (Ea), and two types of aluminium contents in the soil. Changes in all soil characteristics between 1998 and 2018 were statistically evaluated, compared, and visualized using Geographical Information Systems (GIS). We have observed an increase of pHKCl, Cox and a slight improvement in humus quality compared to the results from 1998. The temporal changes of soil characteristics were evident in the whole area, and the influence of reclamation methods was also pronounced. Soil development close to the regional common natural conditions was found in the area where agricultural reclamation measures (i.e., covering with topsoil) were carried out. Furthermore, afforestation – mainly by deciduous trees – supported the improvement of soil characteristics favourable for plant growth. High pyrite content and marshland were identified as the main causes that led to vegetation cover mortality.

The impact of parity, litter size and birth weight variations within a litter on piglet pre-weaning performanceReview

Nqobile Lungile Buthelezi, Bohani Mtileni, Khathutshelo Agree Nephawe, Peter Ayodeji Idowu, Mamokoma Catherine Modiba, Hezekiel Mpedi, Takalani Judas Mpofu

Czech J. Anim. Sci., 2024, 69(7):255-268 | DOI: 10.17221/36/2024-CJAS

Sows are selected for their prolificacy. Therefore, assessing difficulties that can be associated with large litters is crucial. This review aims to highlight the factors that can affect reproductive performance such as breed, parity, litter size, environment, and nutrition. Understanding these factors can help producers make informed decisions about sow management and other aspects. Higher within-litter variation is the result of  a  high number of piglets born. It has been determined that large litter sizes pose a risk to animal welfare in the pig industry. Moreover, large litters bring more piglets with low birth weight leading to high pre-weaning losses. Lighter littermates struggle to get enough colostrum due to the competition with heavy littermates, which lowers their chances of survival causing high mortality. Larger litters may cause greater stress and discomfort of the sow. Therefore, applying stress-free environment and treating the sow with anti-inflammatory compounds may enhance the sow performance and consequent survival of piglets. The litter size is positively correlated with the variation in birth weight within a litter, while the average weight at birth is negatively related to litter size. Producers should therefore focus on potential management strategies that can improve piglet performance, survival and welfare such as proper supervision and adequate colostrum intake. This review highlights the historical development of the pig industry and literature on the variation in piglet weight at birth within a litter, factors influencing weight at birth, and the potential effects on the piglet performance before weaning. Also, the difficulties amongst large litters and possible strategies for managing survival in large litters were also reviewed.

Effects of mineral/organic fertilisation on the soil organic nitrogen pool in a semi‑arid steppeOriginal Paper

Dongqi Jiang, Nan Jiang, Zhuo Wang, Chenran Wu, Lijun Chen, Yulan Zhang, Zhenhua Chen

Plant Soil Environ., 2024, 70(11):695-701 | DOI: 10.17221/160/2024-PSE

Compared to solely mineral fertiliser application, organic fertiliser substitution has been demonstrated to be effective in enhancing nitrogen cycling in cropland, but the relevant research based on grassland is still insufficient. A field experiment was carried out in the grasslands of northern China to examine the impact of mineral/organic fertilisation on soil organic nitrogen fractions, activities of soil N-hydrolysing enzymes and their interrelationships. The results showed that the active soil organic nitrogen pool (hydrolysable NH4+-N + amino sugar-N + amino acid N) increased significantly after fertilisation, and organic fertiliser combined with mineral fertiliser addition showed the best promotion effect. N-acetyl-β-d-glucosaminidase, protease and urease activities are also significantly affected by fertilisation. The findings of our study indicate that the combination of mineral fertiliser and organic fertiliser shows a higher potential in improving the active soil organic nitrogen supply. This approach seems to be a viable agronomic strategy for augmenting soil nitrogen supply and ensuring the stability of the soil nitrogen pool in the semi-arid steppe region of northern China.

Comparison of phenylpropanoid metabolism of three physiological disorders in apple and pearOriginal Paper

Linru Wang, Gengsen Liu, Lianmei Liu, Yugang Zhang, Haiyong Qu

Hort. Sci. (Prague), 2024, 51(4):278-285 | DOI: 10.17221/103/2023-HORTSCI

Apples and pears are the main temperate fruit tree species, and metabolic disorders may occur during their development and post-harvest storage periods, leading to physiological diseases. In this study, we detected the phenylalanine ammonia-lyase (PAL) enzyme and related metabolites involved in phenylpropanoid metabolism in the pulp of pear with hard-end or cork spot and in the pulp of apple with bitter pit. These three physiological disorders differed in phenylpropanoid metabolism and had similar PAL activity, but their polyphenol, flavonoid, and lignin contents changes were completely. For fruits with the three types of physiological metabolic disorders, the auxin content in the tissues with metabolic disorder symptoms was higher than that in the healthy tissues. In summary, the three physiological disorders showed similar changes in the activities of key enzymes (i.e., PAL) involved in phenylpropane metabolism, but their metabolites significantly differed.

Growth performance and yield of rice grown in three different types of soil collected from rice fields with coal fly ash applicationOriginal Paper

Bambang J. Priatmadi, Meldia Septiana, Akhmad R. Saidy

Plant Soil Environ., 2023, 69(7):314-323 | DOI: 10.17221/245/2022-PSE

The improvement of rice production to meet food needs for the increasing population is a general problem faced in wetland development for agriculture. The use of industrial waste, such as coal fly ash (CFA), could effectively improve the soil properties of wetlands. In this study, CFA with an amount of 2% (weight/volume) or 240 g was added to 12 L of three different soils collected from the rice fields (peatland, swampland, and rainfed field) in a 15-L pot, and then incubated in the greenhouse for 15 days. The soil pH, concentrations of NH4+-N, NO3-N, exchangeable calcium (Ca) and magnesium (Mg) and available phosphorus in the soil were quantified following the completion of the incubation. Rice seedlings were planted in each pot, and after 90 days, the growth and yield variables were observed. The results showed that CFA application enhanced the concentrations of NH4+-N, NO3-N, and available phosphorus in peatland and swampland, the rice fields that contain high organic carbon (C), which ultimately leads to increasing rice growth and yield. The application of CFA to rice fields containing low organic carbon did not improve available nitrogen and phosphorus nor enhance the growth and yield of rice. Results of this study indicate an important role of soil organic C content in the rice fields in controlling the effect of CFA on nutrient availability, growth and yield of rice.


Positive effect of fir-rowan intimate mixture on new forest floor and topsoil following afforestationOriginal Paper

Du¹an Kacálek, Jan Barto¹, Ondøej ©pulák

J. For. Sci., 2023, 69(2):80-92 | DOI: 10.17221/180/2022-JFS


Litterfall of silver fir contributes to development of forest floor similarly like Norway spruce litterfall does. The nutrient return to soil can be intensified by mixing these conifers with other tree species whose effects on soil are positive; our study deals with European rowan. The study aimed at firs and rowans in alternating rows (Fi-Ro) compared to the monospecific plantation of fir (Fi) at two former meadow sites with the stands of 20 and 17 years of age, respectively. Both organic forest floor and its mineral subsurface were sampled. Rowan admixed to the silver fir plantation improved both the uppermost layer and the topsoil as higher pH, more favourable soil-sorption properties and higher plant available magnesium were found below Fi-Ro compared to Fi. Fine dry matter was higher below Fi, which was reflected in higher organic carbon (Cox), combustible matter and nitrogen pools. Besides the effects of trees on the soil, silvicultural issues such as renewal costs and tree species performance in monospecific and mixed stands were presented and discussed.

Comparison of nutrient and carbon stocks in the aboveground biomass of mature silver fir (Abies alba Mill.) and Norway spruce (Picea abies L. Karst) standsOriginal Paper

Tomá¹ Èihák, Monika Vejpustková

J. For. Sci., 2023, 69(8):334-347 | DOI: 10.17221/37/2023-JFS

The aim of the study was to compare the stock of essential nutrients and carbon in the aboveground biomass of mature stands of silver fir and Norway spruce. A comparison was carried out for 14 mixed stands of spruce and fir. The tree-level dendrometric characteristics were taken from experimental measurements or were generated using the SIBYLA growth simulator. The amount of biomass was calculated using allometric equations. Samples of stem wood, stem bark, and needles were taken and analysed for carbon, nitrogen, calcium, magnesium, potassium, phosphorus, and sulphur concentrations. Using biomass data, the concentrations of the elements were converted into the stock at the stand level. Overall, spruce fixes a greater amount of carbon. The difference is in the carbon allocation, where fir allocates more carbon in the crown and spruce in the stem. Fir needles contain a greater amount of nutrients than spruce needles. A higher supply of phosphorus, nitrogen, and especially potassium was found in the stem wood and bark of fir, the amount of which is more than twice that of spruce. The stem wood of spruce, on the other hand, fixes more calcium and magnesium. As part of the study, linear regression models predicting the stock of nutrients and carbon depending on the stand basal area were parameterised.

Compatibility of adzuki bean (Vigna angularis) and Bradyrhizobium USDA strains, and geographical distribution and community structure on indigenous adzuki bean-nodulating bradyrhizobia in JapanOriginal Paper

Sokichi Shiro, Ryu Makihara, Masahiro Yamaguchi, Masayuki Kadowaki, Yuichi Saeki

Plant Protect. Sci., 2023, 59(3):217-232 | DOI: 10.17221/64/2022-PPS

We investigated the compatibility between adzuki bean and Bradyrhizobium USDA strains and the relation between the genetic diversity of indigenous adzuki bean-nodulating bradyrhizobia and their geographical distribution in Japan. Six Bradyrhizobium USDA strains were used in the inoculation test, and B. elkanii USDA 94 showed higher symbiotic efficiency than other strains. Two adzuki bean cultivars were used to isolate indigenous adzuki bean-nodulating bradyrhizobia. Their genetic diversity and community structure were analyzed by restriction fragment length polymorphisms of PCR amplicons to target the 16S-23S rRNA gene internal transcribed spacer region, using 11 USDA Bradyrhizobium strains as reference strains. Furthermore, we performed diversity analysis, non-metric multidimensional scaling analysis based on the Chao index, and polar ordination analysis to explain the relation between community structure and geographical distribution of the adzuki bean-nodulating bradyrhizobia. The major clusters were Bj123 in Hokkaido and Kyoto, Bd110 in Fukushima and Shimane A, Be76 in Shimane B and Fukuoka, Bj6 in Miyazaki, and Bj6 and BeOK in Okinawa. Japan's indigenous adzuki bean-nodulating bradyrhizobial community was strongly and significantly correlated with latitude, longitude, annual mean temperature, and electrical conductivity. This result suggests that the adzuki bean-nodulating bradyrhizobial community is influenced by multiple environmental factors.

Lactobacillus sp. participated in the adaptation of Rongchang piglets to cold stressOriginal Paper

J Chai, X Long, P Wu, J Wang, X Wu, Z Tu, M Wei, Z Guo, T Zhang, L Chen

Vet Med - Czech, 2023, 68(10):392-402 | DOI: 10.17221/54/2023-VETMED

Rongchang piglets were easily induced to cold stress and diarrhoea in the winter when raised in an open hog house. However, they also gradually recovered under mid-cold stress. Other studies have suggested gut microbiome might be involved in the host energy metabolism to relieve stress. To study how to adapt Rongchang piglets to cold stress by gut microbiome, thirty Rongchang piglets were randomly divided into a mild cold stress group and a control group for 30 consecutive days. The findings revealed that the piglets had low growth performance and a high diarrhoea rate and mortality rate during the first half of the cold treatment, but subsequently stabilised. The level of cortisol (COR) also displayed a similar trend. In the mild cold stress group, the relative abundance of Muribaculaceae significantly increased on day 15, and the predominant bacterial on day 30 was Lactobacillus sp. Our results indicated that the Rongchang piglet’s production performance and health were impaired at the start of the mild cold stress. However, as time passed, the body could progressively adapt to the low temperature, and Lactobacillus sp. participated in this process. This study provides new insight into how to alleviate health damage caused by cold stress.

Identification and functional analysis of glyoxal oxidase gene from rubber tree anthracnoseOriginal Paper

Xuemei Xian, Kunmeng Li, Hui Liu, Zhenhui Wang, Kun Yuan, Yiyu Hu, Chengtian Feng, Meng Wang, Chunhua Lin, Qiguang He, Yu Zhang

Plant Protect. Sci., 2023, 59(4):337-347 | DOI: 10.17221/52/2023-PPS

Glyoxal oxidase (GLOX, EC 1.2.3.15) is a class of hydrogen peroxide synthases involved in lignin degradation. Several GLOX genes of biotrophic and necrotrophic phytopathogenic fungi have been confirmed to contribute to fungal growth, development, and pathogenicity. However, the composition, sequence characteristics and functions of genes in the GLOX family of hemi-biotrophic phytopathogenic fungi remain poorly understood. This study identified a GLOX-encoding gene CsGLOX in the hemi-biotrophic phytopathogenic fungus Colletotrichum siamense by bioinformatics analysis and PCR cloning. The encoded protein contains a signal peptide and five cell wall stress-responsive component (WSC) domains at the N terminus, followed by a catalytic structural domain (AA5_1). CsGLOX-deficient mutants were constructed by homologous replacement, which significantly increased the formation of conidia and reduced the pathogenicity and the high-osmotic stress tolerance of the fungus. However, the deletions did not influence fungal filamentous growth. This study proposes that the CsGLOX gene is involved in pathogen conidial formation, pathogenicity, and osmotic stress response, which deepens our understanding of the pathogenic mechanism of hemi-biotrophic phytopathogenic fungus C. siamense.

Effects of biogas residue addition, as cultivation substrate, on ginseng growthOriginal Paper

Yan Gui, Meng Suo, Zhijie Qiu, Hao Wu, Zongjun Cui, Hongyan Yang

Plant Soil Environ., 2024, 70(2):101-110 | DOI: 10.17221/430/2023-PSE

The effects of biogas residue as a substrate on ginseng growth and its feasibility for ginseng cultivation are unclear. The present study used biogas residue at different concentrations and maturity levels to cultivate ginseng. The biological characteristics of ginseng, soil physiochemical indices, and ginseng and soil microbial communities were investigated. The results showed that with increasing ginseng content and maturity, the total fresh weight, total length and saponin content significantly increased. The enzyme activities of soil, NO3-N, and available phosphorus also increased. The microbiome analysis revealed that with the addition of biogas residue, microorganisms related to plant growth promotion, such as Chloroflexi, Gemmatimonadota and Mortierellomycota, were more common in the plant or rhizosphere soil. The results based on the co-occurrence network showed that the structure of the bacterial community was more stable than that of the fungal community with increasing biogas residue content. Our results indicated that biogas residue could be used as a ginseng cultivation substrate and promote growth.

Repeated bolus injections of bupivacaine for continuous bilateral transversus thoracis plane block undergoing median sternotomy in a dog: A case reportCase Report

D Kim, D Shin, S Yun, G An, J Jung, WG Son

Vet Med - Czech, 2024, 69(4):123-129 | DOI: 10.17221/118/2023-VETMED

An 8-year-old, 6.5 kg, neutered female Shih-Tzu dog was presented for surgical resection of a mediastinal mass. A median sternotomy and left cranial lung lobectomy were performed. Intraoperatively, with the patient under general anaesthesia, a bilateral transversus thoracis plane (TTP) block was performed by injecting 0.5% bupivacaine (0.2 ml/kg) per side using real-time ultrasound guidance. After surgery, indwelling catheters for repeated bolus injections of bupivacaine in TTP were placed as follows: the fifth sternebra was palpated in dorsal recumbency, and the transducer was placed in the longitudinal plane lateral to the sternal border. A 16 gauge over-the-needle catheter was inserted caudo-cranially using an in-plane technique and located in the TTP. An intermittent bolus of bupivacaine (0.1 ml/kg) per side was injected via the indwelling catheter every 8 h for 3 days, with a constant rate infusion of an intravenous fentanyl (1 μg/kg/h) and ketamine (0.12 mg/kg/h) combination. Post-operative pain was evaluated using the Glasgow composite measure pain scale and the score was 4–5/24 on the day of surgery and gradually decreased over time. Additional rescue analgesia was not required. Repeated boluses of bupivacaine for a continuous bilateral TTP block may be a useful adjuvant for perioperative pain management strategies, including median sternotomy, in dogs.

Innovations in the methodological approach to quantifying and evaluating the supported effects of forests for recreational and educational ecosystem servicesOriginal Paper

Zdenìk Odvárka, Jitka Meòházová

J. For. Sci., 2024, 70(5):235-248 | DOI: 10.17221/13/2024-JFS

The paper deals with a new method of innovative assessment of the supported effects and ecosystem services of forests using the actual amount of their increased costs. Among the most important research findings and significance of the new method is that it contributes to the body of knowledge on valuation and payment for ecosystem services. The focus of the research task is to help address the current difficult economic situation of forest owners resulting from the impacts of climate change. The study aims to determine what work quantifies the amount of compensation for the provision of supported ecosystem services that is sufficient for owners by using hypothesis testing. The evaluation of the supported effects was carried out in a case study in the area of the Chrudim-Podhùra Recreational Forests in the Czech Republic. The results of the evaluation were quantified in two experimental spreadsheets of the results, a comparative analysis of the evaluation results was performed, and hypothesis testing was conducted. The innovative methodological approach to the assessment of supported effects can be easily modified and used to assess the actual amount of increased costs of other ecosystem services of the forest.

Adjusting the sowing date of fresh maize to promote grain filling, key starch synthesis enzymes, and yieldOriginal Paper

Lin An, Hailong Wei, Yi Cheng, Jun Zou, Jin Zuo, Dailing Liu, Bi Song

Plant Soil Environ., 2024, 70(7):438-453 | DOI: 10.17221/490/2023-PSE

Clarifying the effects of meteorological factors on the growth and development of fresh maize after delayed sowing is important for selecting appropriate sowing dates and improving yield. Six sowing dates (B1 (March 10); B2 (March 20); B3 (March 30); B4 (April 9); B5 (April 19), and B6 (April 29)) and three fresh maize cultivars (A1 (Wan Nuo 2000); A2 (Nongke Nuo 336), and A3 (Caitian Nuo 6)) were chosen for experiments conducted between 2021 and 2022 in Guiyang, Qingzhen City, China. The results showed that the whole growth period and sowing-silking period were significantly reduced with delayed sowing, while the grain-filling period was relatively stable. Delayed sowing was beneficial in increasing the number of endosperm cells and the weight of the hundred kernels. The graining filling rate and the activities of four key starch synthesis enzymes (sucrose synthase, ADP-glucose pyrophosphorylase, starch branching enzyme, and starch debranching enzyme) were significantly influenced by light, temperature, and precipitation, and they mainly affected the hundred kernel weight. The yield tended to increase with delayed sowing, and the correlation analysis between precipitation and yield at different sowing periods showed a significant effect of precipitation on yield. Delaying the sowing to mid-early April was more favourable for grain filling, enhanced key enzyme activity, and increased the kernel weight and yield. These results highlight the importance of choosing excellent cultivars and matching them with the most suitable sowing date to fully exploit climatic resources and achieve high-yield and high-efficiency cultivation of fresh maize.

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