Fulltext search in archive



« advanced mode »

 previous    ...   4   5   6   7   8  9   10   11   12   13   ...    next 

Results 211 to 240 of 4099:

Silver geochemistry and isotope systematics in Ag-rich mine tailings from NamibiaOriginal Paper

Ale¹ Vanìk, Maria Vaòková, Vojtìch Ettler, Martin Mihaljeviè, Bohdan Køíbek, Petra Vokurková, Tereza Zádorová, Vít Pení¾ek, Ondra Sracek (ORCID: 0000-

Soil & Water Res., 2026, 21(1):1-8 | DOI: 10.17221/143/2025-SWR

In this study, we present a detailed geochemical characterisation and stable isotope systematics of silver (Ag) in a mining waste facility at the Namib Lead & Zinc mine in Namibia (Africa). We examined a series of flotation tailings and ore minerals to address two principal questions: (1) the distribution, chemical form and leachability of Ag, and (2) the local Ag isotopic signature(s) and its variability in relation to Ag speciation in the solid phase, as well as the fate of stable Ag isotopes. Our findings reveal a significant correlation between Ag and Pb concentrations, indicating that galena is the primary Ag carrier. Most importantly, all mild extractions mobilised only a minimal amount of Ag (≤ 1 wt.% of the total amount). This suggests that most Ag is associated with geochemically stable phases, specifically sulphides, which are not subjected to leaching and/or intensive weathering. Unlike other isotope studies, the present research demonstrates a homogeneous Ag isotopic signal in the tailings and individual ore samples with an average δ109Ag value of ~ 0‰ (± 0.1, 2SD). Therefore, this study provides new knowledge and clearly supports the use of Ag isotopic data to track primary Ag sources globally, not only in Africa.

Sensing weeds and crops using thermal and hyperspectral imaginaryOriginal Paper

Hana Va¹ková, Alois Bilavèík, Milan Kroulík, Jan Luká¹

Plant Soil Environ., 2026, 72(2):146-154 | DOI: 10.17221/534/2025-PSE

The availability of new sensor technologies, such as thermal and hyperspectral imaging, enables early-stage weed detection and species identification and density estimation, both of which are crucial for effective weed management. Thermal imaging successfully distinguished between dicotyledonous (oilseed rape, pea, Stellaria media, Triplerospermum inodorum, Veronica persica) and monocotyledonous species (barley, wheat, sorghum and Echinochloa crus-galli) except Amaranthus retroflexus, during early growth stages. The most pronounced differences in hyperspectral reflectance occurred at 550 nm, where five distinct plant groups were recognisable (sum of squares = 0.7604, F-value = 105.1). The highest hyperspectral reflectance was recorded for oilseed rape, followed by Stellaria media. The same trend was found for the normalised difference index (NDI), which also showed five distinct groups. These findings indicate that thermography and hyperspectral imaging have strong potential as effective tools for supporting weed detection in precision agriculture; however, further research and field validation are required before routine implementation in agricultural practice.

Probiotic bacteria of wild boar origin intended for piglets – An in vitro studyOriginal Paper

I Kostovova, K Kavanova, M Moravkova, J Gebauer, L Leva, M Vícenova, V Babak, M Faldyna, M Crhanova

Vet Med - Czech, 2024, 69(8):281-296 | DOI: 10.17221/35/2024-VETMED

Using probiotics represents a potential solution to post-weaning diarrheal diseases in piglets on commercial farms. The gastrointestinal tract of wild boars serves as a promising reservoir of novel lactic acid bacteria with suitable probiotic characteristics. In this study, we isolated eight bacterial strains from the intestinal content of wild boars identified as representatives of the species Bifidobacterium apri, Lactobacillus amylovorus, and Ligilactobacillus salivarius. These isolates underwent in vitro analysis and characterisation to assess their biological safety and probiotic properties. Analysis of their full genome sequences revealed the absence of horizontally transferrable genes for antibiotic resistance. However, seven out of eight isolates harboured genes encoding various types of bacteriocins in their genomes, and bacteriocin production was further confirmed by mass spectrometry analysis. Most of the tested strains demonstrated the ability to inhibit the growth of selected pathogenic bacteria, produce exopolysaccharides, and stimulate the expression of interleukin-10 in porcine macrophages. These characteristics deem the isolates characterised in this study as potential candidates for use as probiotics for piglets during the post-weaning period.

Population composition and virulence of Puccinia striiformis f. sp. tritici in KazakhstanOriginal Paper

Shynbolat Rsaliyev, Aralbek Rsaliyev, Rakhim Urazaliev, Saltanat Dubekova, Akerke Serikbaykyzy

Plant Protect. Sci., 2025, 61(2):152-161 | DOI: 10.17221/16/2024-PPS

In recent years, epidemics of wheat yellow rust caused by Puccinia striiformis f. sp. tritici (Pst) have been observed in major winter wheat-producing regions in Kazakhstan. However, there is currently very little information about the racial composition and virulence of Pst. The global emergence of aggressive and genetically diverse Pst races leads to different seasonal and geographic patterns of the pathogen, making cultivated wheat varieties vulnerable to the pathogen and potentially causing yellow rust epidemics. Three periods with different characteristic dominant Pst races were distinguished in Kazakhstan during 1985–2022. The first period covers 1985–2000, when in the southeast of the country, the main Pst races were 7E156 (31/1.5), 7E158 (A-8/5), 39E158 (X/1.5) and 86E16. In the second period (2001–2010), the crops were dominated by races 7E159, 31E159 and 47E224, which showed virulence to varieties with resistance genes Yr9 and Yr18. In the third period (2018–2022), the most dominant races in the fungal population were 7E159, 39E158, 79E73, 79E179, and 111E158, exhibiting virulence to varieties with the Yr26 and Yr27 genes. In the background of field infection, the resistance genes Yr5, Yr10, and Yr15 remain reliable in ensuring resistance; the Yr4, YrSp, and YrND sources are also highly effective against the Pst population.

Effects of modulating probiotics on greenhouse gas emissions and yield in rice paddiesOriginal Paper

Shang-Hung Pao, Hewder Wu, Hwey-Lian Hsieh, Chang-Po Chen, Hsing-Juh Lin

Plant Soil Environ., 2025, 71(1):21-35 | DOI: 10.17221/299/2024-PSE

Rice serves as a crucial staple food for nearly half of the world’s population. However, rice paddies contribute remarkably to greenhouse gas (GHG) emissions. Prior studies often showed a trade-off between reducing GHG emissions and impairing rice yield. In this study, we explore the possibility of employing modulating probiotics to develop a win-win strategy for enhancing rice yields while reducing GHG emissions. Three paired plots of rice paddies were used in the field experiment during the spring growing season (from February to July 2022). Each pair of plots was divided into control and probiotic addition paddies to investigate the effects of modulating probiotic treatment on GHG emissions using the whole-plant chambers. Our results revealed notable reductions in GHG emissions and increases in rice yield with the probiotic treatment relative to the control. The probiotic treatment resulted in a 47.58% reduction in carbon dioxide (CO2) emissions, a 21.53% reduction in methane (CH4) emissions, and an impressive 88.50% reduction in nitrous oxide (N2O) emissions over the growing season. We also observed a 27.75% increase in rice yield with the probiotic treatment. These findings suggest that employing modulating probiotics has the potential to pave the way for mutually beneficial outcomes, enhancing rice productivity while mitigating the GHG emissions associated with rice cultivation.

Supply chain management practices of SMEs in developing countries: Bibliometric and systematic reviewsReview

Megawati Citra Alam, Budi Setiawan, Hery Toiba, Silvana Maulidah, Moh Shadiqur Rahman

Agric. Econ. - Czech, 2025, 71(2):99-112 | DOI: 10.17221/290/2024-AGRICECON


This study explores the ways in which small and medium enterprises (SMEs) have successfully implemented global supply chain management procedures that make the necessary adjustments to the realities of the specific problem, such as resource constraints, regulatory complexity, and supplier issues. It demonstrates how developing cooperation with partners grows the sustainability of the institutions. Another point highlights that government support and advancements in IT are enabling SMEs to streamline business processes and expand into new markets. Moreover, recommendations are supplied to the policymakers and practitioners, thereby instigating the SME's growth in developed countries. SMEs are using more creative and localised supply chain strategies to address these issues; frequently, the SMEs actors do this by working with regional suppliers and utilising government aid initiatives. SMEs can increase productivity, save costs, and enter new markets by streamlining operations, utilising technology, and adapting global supply chain management principles to local requirements. This study offers insights for policymakers, industry practitioners, and academics to design supportive policies for SMEs in developing countries. It highlights the importance of innovation, sustainability, strategic partnerships, and external support for SMEs' sustainable growth and inclusive economic development.

Impact of technical water retention on European beech (Fagus sylvatica L.) resilience and growth dynamicsOriginal Paper

Zdenìk Vacek, Ivana Tomá¹ková, Zdenìk Fuchs, Václav ©imùnek, Stanislav Vacek, Jan Cukor, Luká¹ Bílek, Josef Gallo, Karel Zlatu¹ka, Martin Duchan

J. For. Sci., 2025, 71(3):124-137 | DOI: 10.17221/92/2024-JFS

Global climate change (GCC) is putting increasing pressure on forest ecosystems, leading to more frequent disturbances such as pest outbreaks and other climate-related stressors, all of which threaten forest stability. This study examines how different technical water retention measures (infiltration pits) can enhance the resilience of European beech (Fagus sylvatica L.) to these climatic challenges, focusing on their impact on radial growth, sap flow, and acclimatisation to moisture conditions at two sites in Czechia (430–440 m a.s.l.). Three treatments were compared: a water infiltration pit under a culvert mouth, an infiltration pit without a culvert and a control plot without a technical solution. Results showed that maximum daily transpiration rates of beech ranged between 90–120 L per day. Air temperature had a stronger influence on beech radial growth than precipitation, particularly at the waterlogged sites. The lowest radial growth occurred in the treatment involving a water infiltration pit under a culvert mouth, while treatments with an infiltration pit without a culvert demonstrated notable seasonal stem shrinkage and swelling (tree water deficit – TWD), especially in early spring. On the other hand, no differences were found between the three treatments including the control variant in the maximum growth or the context of minimum TWD. In conclusion, these technical measures had limited or short-term effects on the growth and physiological processes of European beech. Despite the high costs of implementation, sap flow and dendrochronological measurements do not support the construction of infiltration pits as a means of improving water retention in forest ecosystems.

Using thermal time to predict the timing of flight activity in Noctuidae (Lepidoptera) species: Calculation and verification of forecast methodsOriginal Paper

Alois Honìk, Zdenka Martinková, Ivo Novák, Terezia Jauschová, Lenka Sarva¹ová, Miroslav Saniga, Milada Holecová, Ján Kulfan, Peter Zach

Plant Protect. Sci., 2025, 61(4):366-377 | DOI: 10.17221/150/2024-PPS


From 1967 to 1995, the flight activity of 25 monovoltine species of moths (Noctuidae, Lepidoptera) was monitored via a light trap located in Prague (50.09 N, 14.30 E). For each species, the day when half of the individuals were caught (peak of flight activity, PFA) was specified each year. This study addresses a method of predicting the calendar date of the PFA via thermal time. We determined a base temperature of +6 °C, at which the differences between the predicted and actual dates of the PFA were minimal. For each species and each year, the sum of the degree days exceeding the base temperature from January 1 to the date of the PFA (SumT) was determined, and the average SumT throughout the study was calculated. Each year, the predicted date of the PFA is the date when the average SumT was achieved. Sixty-five percent of the predicted PFA dates fell within ±5 days of the actual date of the PFA. Shifts in the magnitude and direction of the difference between the actual and predicted PFAs affecting concurrently all species were caused by the thermal conditions of the year.

Psychological perspectives on smallholder farmers' choice of climate change adaptation strategies and productivity nexus in Southwest, NigeriaOriginal Paper

Adetomiwa Kolapo, Akeem Abiade Tijani, Seyi Olalekan Olawuyi, Adeyera James Kolapo, Temitope Oluwaseun Ojo, Nolwazi Zanele Khumalo, Khalid. Mohamed Elhindi, Hazem Kassem

Agric. Econ. - Czech, 2025, 71(4):185-202 | DOI: 10.17221/87/2024-AGRICECON

In recent pasts, high priority has been placed on encouraging the implementation of various climate change adaptation techniques to adapt to the disastrous effects of climate change. Like in other countries affected by climate change, Nigerian farmers were also encouraged by governmental and non-governmental organisations to implement techniques for adapting to climate change impact. In this study, we use a psychological approach to investigate how a mix of socioeconomic and psycho-cognitive factors affect smallholder farmers' decisions about various climate change adaptation strategies and the consequent impact of the adoption of adaptation strategies on crop yield. Following the theory of planned behaviour (TPB), the adoption decision of farmers was modelled using the partial least squares structural equation modelling (PLS-SEM) and the ordered probit model. The impact of adopting adaptation strategies on productivity was evaluated using multinomial endogenous switching regression (MESR). The MESR helps to address endogeneity issues that might arise as a result of inconsistencies in the behavioural responses of the farmers. Our result indicates that psycho-cognitive factors like intentions and personal norms significantly predicted the number of climate change adaptation strategies the farmers ultimately embraced and implemented on their farms. We also found that the smallholder farmers' yield and income were most significantly impacted by the adoption of land restoration as a climate change adaptation strategy. The findings will assist in the design of more effective policy instruments to remove adoption hurdles as well as crafting tailored extension services that resonate with the realities of the farmer and thus help foster behavioural change.

Subsidies and farming: A microempirical analysis of financial allocation to promote agricultural productionOriginal Paper

Congxian He, Lulu Yu, Huwei Wen

Agric. Econ. - Czech, 2026, 72(3):156-170 | DOI: 10.17221/187/2025-AGRICECON

Agriculture's stable development is vital to the national economy, and its vulnerability justifies fiscal support. On the basis of data from the China Family Panel Studies from 2012 to 2022, this study examines how fiscal allocation affects agricultural production, particularly rural households' grain-growing enthusiasm and their productive income. Results show that public expenditure significantly boosts agricultural production, supported by ordered probit and ordinary least squares fixed effect models and confirmed in robustness tests. Mechanistic tests indicate that agricultural public expenditure promotes agricultural production by improving agricultural technical levels, enhancing production services, and expanding the agricultural scale. Heterogeneity analysis shows that agricultural public expenditure has a stronger effect on grain-growing enthusiasm among low-educated rural households and on productive income in major grain production areas. It also has a stronger effect on productive income for rural households with emerging and prime-aged farmers, in nonmajor grain production areas, and those with high educational attainment. The research offers empirical insights for exploring ways to achieve the 'dual goals' of food security and poverty alleviation.

The potential of tannin from Sonneratia alba fruit in defaunation of rumen protozoa and reducing methane gas production: An approach to increase livestock digestive efficiencyOriginal Paper

Roni Pazla, Antonius Antonius, Zaitul Ikhlas, Anuraga Jayanegara, Laily Rinda Ardani, Maureen Chrisye Hadiatry, Jumjunidang Jumjunidang, Tri Budiyanti

Czech J. Anim. Sci., 2025, 70(6):223-233 | DOI: 10.17221/130/2024-CJAS


This research explores the addition of mangrove (Sonneratia alba) fruit to reduce the production of methane and the total population of protozoa. The dosage for adding mangrove fruit is 0% (without addition), 1.5%, 3%, and 4.5% in sugarcane tops-based feed. Results include ruminal product fermentation, gas and methane emissions, total protozoa, microbial protein production, microbial biomass, and nutrient digestibility. The research findings showed that an additional 1.5% to 4.5% dose can reduce methane gas emissions and the total number of protozoa. The total number of protozoa at 4.5% (T3) reached 9.89 × 104 cells/ml and methane gas was 56.1 ml/g DM (dry matter); 8.41 ml/g OM (organic matter). This effect is attributed to the tannin content in mangrove fruit, which exhibits antimicrobial properties. However, increasing doses also reduced nutrient digestibility. The findings suggest that incorporating 1.5–4.5% mangrove (Sonnetaria alba) fruit as a source of tannins causes a positive impact which reduces protozoa populations and methane production without changing the ruminal fermentation product. However, the addition of mangrove fruit in this study caused also reduced nutrient digestibility.

The effect of hydrogel and precipitation-thermal conditions on the yield and content of antinutritional compounds in potatoOriginal Paper

Krystyna Zarzecka, Marek Guga³a, Iwona Mystkowska, Emilia Rz±¿ewska

Plant Soil Environ., 2026, 72(3):165-171 | DOI: 10.17221/16/2026-PSE

A field experiment was conducted with potatoes to examine the effects of hydrogel application and weather conditions on total tuber yield and the content of potentially harmful compounds – glycoalkaloids and nitrates. The first experimental factor comprised three table cultivars: Lawenda, Rima and Provita. The second factor consisted of three treatments: the application of the hydrogel AgroNanoGel Basic at 60 and 90 kg/ha, and a control treatment without hydrogel. Statistical analysis demonstrated significant effects of cultivar, hydrogel application rates, and hydrothermal conditions in the study years on potato tuber yield. The highest yields were produced by cv. Lawenda, and the most favourable yield-forming effects were observed when the hydrogel had been applied at 90 kg/ha. The levels of antinutritional compounds were significantly affected by the experimental factors and weather conditions during the study years. Cv. Rima accumulated the lowest levels of glycoalkaloids, whereas cv. Lawenda contained the least nitrates (V). The hydrogel increased the content of both glycoalkaloids and nitrates relative to the control treatment, although their levels posed no risk to human health. Higher concentrations of antinutritional compounds were recorded in the dry and warm 2024 season than in the cooler and more humid 2025 season.

Serendipita indica improve seed germination and seedling growth of Lolium multiflorum Lam. through amelioration of osmotic adjustment, nutrient accumulation and Na+/K+ homoeostasis under salinity conditionsOriginal Paper

Binghua Liu, Xinghong Liu, Lianjia Yu, Xingjian Dun, Hailin Ma, Fangchun Liu, Lin Peng

Plant Soil Environ., 2024, 70(10):644-655 | DOI: 10.17221/244/2024-PSE

A pot experiment was carried out to determine the effect of Serendipita indica on the salt response of Lolium multiflorum Lam. Although the salinity decreased the root colonisation of S. indica by 28.34%, successful colonisation of S. indica increased the seed germination rate, fresh weight, leaf relative water content and chlorophyll content by 28.09, 59.01, 38.78 and 28.80%, respectively, compared with uncolonised seedlings. Under salinity, leaf malondialdehyde content, leaf relative electrical conductivity, as well as Na+ content and Na+/K+ ratio in leaves and roots of S. indica-colonised seedlings were decreased by 33.99, 33.31, 63.40% and 47.42, 85.66 and 55.88%, respectively, compared with uncolonised seedlings. Meanwhile, compared with uncolonised seedlings under salinity, the contents of proline in leaves, N, P and K+ in leaves and roots of the S. indica-colonised seedlings were increased by 47.47, 45.69 and 30.05%, and 41.77, 19.51, 19.18 and 155.00%, respectively. These results indicate that S. indica colonisation confers salt tolerance in L. multiflorum seedlings by enhancing osmotic adjustment via actively accumulating proline and K+, increasing the uptake of nutrients such as N and P, and improving Na+/K+ homoeostasis. The study would provide a new idea for the combined application of salt-tolerant plants and symbiotic microorganisms in the ecological restoration of saline-alkali lands.

Geographical forest zonation: Perspectives, history and useReview

Petr Dujka, Antonín Kusbach

J. For. Sci., 2024, 70(7):335-352 | DOI: 10.17221/5/2024-JFS

The rate of climate change advancement and its predicted impact are valid reasons for intense discourse on the topic of choosing the most suitable silvicultural and adaptation measures for the longevity and sustainability of forest communities. Changes in growth conditions of plants can be expected in both vertical (altitudinal) and horizontal (geographical) directions. The anticipated occurrence rate of these changes should, according to climate models, be higher than the natural adaptability rate of longevous tree species. This study focuses on the possibility of utilising regional geographical units of the Czech Republic (Central Europe) – Natural Forest Areas (NFAs) – for introducing the principles of assisted forest migration to national silviculture policies in order to find solutions for the predicted climate change scenarios. The primary objectives are (i) to review the history of the NFA concept, (ii) to discuss the perspectives of NFAs with regard to climate change, and (iii) to propose possible solutions for further development in comparison with alternative approaches to horizontal classification of the Czech Republic. This study is the first of its kind that provides a complete textual and graphic overview of the NFAs' history from 1959 to 2018, highlighting the purpose of NFAs as both frameworks for the maintenance of the genetic potential of forest tree species' populations and frameworks for long-term strategic management planning. Further development of the concept is discussed in connection with the main principles of assisted forest migration and the possibility of employing geospatial modellation analyses for a more precise definition of current NFA borders. An assessment of the areas' potential is also debated, mainly with an emphasis on the zonality of forest sites.

Association between polymorphism within rabbit IGF1 gene and slaughter weight in Termond White rabbitsOriginal Paper

Anna Migda³, Sylwia Ewa Pa³ka, Micha³ Kmiecik, Olga Jarnecka, Ewelina Semik-Gurgul, £ukasz Migda³

Czech J. Anim. Sci., 2025, 70(1):33-41 | DOI: 10.17221/59/2024-CJAS

Growth traits belong to the most important economic traits in livestock. One of the genes involved in vertebrate growth and development is insulin-like growth factor 1 (IGF1). Therefore, in our study we hypothesised that within the sequence of rabbit IGF1 gene it is possible to identify a polymorphism that may influence growth, carcass or meat traits in rabbits. We identified 6 polymorphisms (g.89259430T>C; g.89259338C>G; g.89259328T>C; 89210029A>G; 89210349C>G and g.89194199C>T) within introns of the IGF1 gene. One polymorphism, g.89194199C>T, was analysed using polymerase chain reaction high-resolution melting (PCR-HRM). We performed the association analysis on 370 animals (males to females 1 : 1) of different breeds: New Zealand White × Flemish Giant crossbreds (NZW × FG), Termond White (TW) and Flemish Giant (FG). Results showed that for growth and slaughter traits in TW populations a significant association (P = 0.003) was found for slaughter weight (SW) when CT genotypes showed significantly higher values compared to CC genotypes (2 878.0 g ± 107.0 and 2 678.0 g ± 34.0, respectively). For TW rabbits we found a significant association (P = 0.009) for dissected bone weight in hind leg (HB) when CT genotypes (127.0 g ± 5.8) had significantly higher values compared to CC genotypes (112.0 g ± 2.4). For carcass traits and physical characteristics of meat we found for musculus longissimus lumborum in TW rabbits that the b* parameter value 45 min after slaughter was significantly higher (P = 0.001) for CT genotypes (1.88 ± 0.05) compared to CC genotypes (0.05 ± 0.02). We conclude that the use of identified SNP in breeding may be limited to some breeds.

Assessing the impact of China's National Big Data Comprehensive Pilot Zone policy on agricultural carbon emissionsOriginal Paper

Yuqian Zhang, Yixuan Wang, Chenchen Su, Jiahong Guo, Chen Xu

Agric. Econ. - Czech, 2025, 71(5):242-253 | DOI: 10.17221/205/2024-AGRICECON


The global focus on the relationship between digitisation and agricultural carbon emissions remains high. However, research on the systemic ramifications of comprehensive digital policy implementation remains limited. Against the backdrop of China's pursuit of carbon neutrality and carbon emission peaking targets, we employed the difference-in-differences method to investigate the impact of applying a digital policy on agricultural carbon emissions. Our findings indicated that the implementation of the National Big Data Comprehensive Pilot Zone policy could effectively mitigate agricultural carbon emissions, resulting in a sustained positive influence. The intermediary mechanism test results validated the beneficial effects of financial expenditures on science and technology, as well as the number of information practitioners. The regional heterogeneity analysis results revealed that the policy effect was obvious in the major grain-producing areas but not in the major grain-selling areas or production–marketing balance areas. Additionally, differences in policy effectiveness were observed across different crop types. This study not only offers valuable insights for agricultural carbon reduction in China but also provides robust case data and guidance for other developing countries worldwide in the formulation and execution of digital policies aimed at promoting agricultural carbon emission reduction.

Assessing genetic variability and heritability in the F4 population of mutant Bioguma and Gando Keta local Indonesian sorghum [Sorghum bicolor (L.) Moench]Original Paper

Endang Lestari, Karlina Syahruddin, Heny Herawati, Suarni Suarni, Moch Subechan, Suwarti Suwarti, Slamet Priyanto, Herniwati Herniwati, Diana Widiastuti

Czech J. Genet. Plant Breed., 2025, 61(3):151-159 | DOI: 10.17221/15/2025-CJGPB

This study examined the genetic variability, heritability, and genetic advance in the F4 generation of sorghum to enhance grain productivity. The study was conducted at Citayam Research Station, Depok Indonesia (March–September 2023), and evaluated 102 progenies of the F4 population from a Bioguma (a mutant line) × Gando Keta (a local variety) cross using an Augmented block design with four replications. The results of this experiment indicated that the F4 generation outperformed the Gando Keta grain yield components, but remained inferior to Bioguma. The yield traits were influenced by the non-additive gene action, with genetic factors playing a significant role in grain weight variation. The top 20% of F4 progenies exhibited improved yield characteristics, including thicker stems, larger panicles, and increased grain weight.

European rose chafer prevalence on cultivated highbush blueberriesOriginal Paper

Maxhun Shehaj, Erzen Shehaj, Elbasan Çekaj, Agrinë Naqa, Blerinë Krasniqi

Hort. Sci. (Prague), 2025, 52(2):155-161 | DOI: 10.17221/28/2024-HORTSCI

The purpose of this study was to detect the prevalence rate of European rose chafer (Cetonia aurata) on American highbush blueberries (Vaccinium corymbosum). The observation was made from the beginning of flowering to the end of harvest of the blueberry cultivars ‘Duke’, ‘Legacy’, and ‘Huron’. The incidence occurs during the first harvest of the ‘Duke’ cultivar. Three rows per cultivar, with 90 plants per row, were monitored during the research. Insects were collected on 15 infested plants per row, randomly selected, and counted. This procedure was repeated every second day, 3 times a day: in the morning, at noon, and in the afternoon. The highest presence of the insect was recorded at the full ripening phase of the ‘Duke’ cultivar, with 25.5% of bushes being infested and an average of 12.7 beetles per bush counted. The damage percentage varied over the harvesting periods: 29% of the fruits were damaged in the first harvest, 13% in the second harvest, and 8% during the third harvest. While ‘Legacy’ and ‘Huron’ stood out with 5.55% and 3.33% of infected bushes, respectively, and minor fruit damage. This research proves that the European rose chafer in the area of the experiment is a harmful pest of early cultivated blueberry cultivars.

Effect of Trichoderma harzianum against Fusarium oxysporum in resistant and susceptible tomato cultivarsOriginal Paper

Patcharaporn Suwor, Manthana Mueangkhong, Praphat Kawicha, Thanwanit Thanyasiriwat, Suchila Techawongstien, Sanjeet Kumar, Wen-Shi Tsai, Somsak Kramchote

Hort. Sci. (Prague), 2025, 52(2):173-181 | DOI: 10.17221/126/2023-HORTSCI

Fusarium wilt disease presents a substantial challenge to tomato production, especially in an open field environment. The peroxidase (POD) activity and total phenolic compounds (TPCs) play a crucial role in measuring the antioxidant capacity of plants. Understanding the variations in the POD and TPC levels during disease-induced stress becomes important for effectively managing Fusarium wilt and enhancing tomato production. This study investigates the impacts of Trichoderma harzianum inoculation through the root drip method on five tomato cultivars. It compares these cultivars to their non-treated counterparts when they are subjected to infection by Fusarium oxysporum f. sp. lycopersici (Fol). The results showed that the level of resistance to Fol is based on the specific tomato cultivar. Notably, ‘MT26’ exhibited the lowest disease severity index (DSI), indicating a strong response, whereas ‘CLN3682F’ showed notable susceptibility. Regarding the POD and TPC activity, its exhibition differed in compatibility with the response of each tomato cultivar to Fusarium wilt disease. The resistant cultivars increased the POD activity after the Trichoderma induction before the Fol inoculation, and this activity was further boosted when exposed to disease conditions. Consequently, enhancing the POD and TPC levels during the initial stages could potentially serve as a systemic defence mechanism of tomatoes against the Fusarium wilt disease.

Mitigating drought effects in maize with Trichoderma harzianum (strain – ESALQ 1306): a bioinoculant for sustainable agricultureOriginal Paper

Renato Lustosa Sobrinho, Marcelo Carvalho Minhoto Teixeira Filho, Christiane Abreu de Oliveira-Paiva, Carlos Eduardo da Silva Oliveira, Tiago Zoz, Bruno Rodrigues de Oliveira, Guilherme Carlos Fernandes, Karina da Silva Souza, Afrah E. Mohammed, Modhi O. Alotaibi, Seham. M

Plant Soil Environ., 2025, 71(10):735-749 | DOI: 10.17221/330/2025-PSE

Agriculture faces increasing challenges due to climate change, underscoring the importance of beneficial microorganisms for enhancing crop resilience and improving soil health. However, the performance of microbial inoculant strains can vary widely depending on the cultivated species and environmental conditions. This study evaluated the ESALQ 1306 strain of Trichoderma harzianum, a soil fungus recognised as a biological control agent for crops such as soybean and strawberry, investigating its potential as a growth promoter in maize (Zea mays L.). Field experiments were conducted with three commercial cultivars (DKB255, DKB360, and 2B810) over two growing seasons, one under irrigation and the other under severe natural drought. The results revealed that Trichoderma (ESALQ 1306) significantly increased plant height, biomass, and grain yield, particularly under drought stress, despite lacking a formal recommendation for maize. The cv. DKB360 showed the greatest response, with yield increases of up to 60% compared to untreated controls. Inoculation also improved nutrient uptake, especially nitrogen, highlighting its potential to maintain soil health and fertility. These findings demonstrate that the ESALQ 1306 strain of Trichoderma is a promising soil bioinoculant for agriculture, capable of improving maize performance under both optimal and stressful conditions. However, it is important to emphasise that genotype-specific responses highlight the need to align bioinoculant application with selecting specific cultivars to ensure inoculation success. This insight is crucial for guiding future breeding programs and establishing clear regulatory guidelines for commercialising biological products, fostering sustainable and resilient agricultural systems.

Molecular characterisation and screening for сry genes of native Bacillus thuringiensis strains from KazakhstanOriginal Paper

Alnura Tursunova, Ainura Adilkhankyzy, Shyryn Turbekova, Ulzhalgas Abylayeva, Ainaz Balabek, Alibek Uspanov, Bakhytzhan Duisembekov

Plant Protect. Sci., 2026, 62(1):27-35 | DOI: 10.17221/116/2024-PPS


The current study aimed to characterise indigenous Bacillus thuringiensis (Bt) strains for their potential use in agricultural broad-spectrum pest control. Twenty-nine Bt strains were isolated from soil in southeastern Kazakhstan. All isolates were Gram-positive and formed endospores. Species identification was conducted by sequencing the gyrase B (gyrB) gene. The nucleotide sequences of the amplified gyrB gene regions were compared with those in the NCBI database, confirming that the isolates were native Bt strains with high homology to known Bt strains (99–100%). In addition, the strains were screened for the presence of genes encoding 11 different crystalline endotoxins using PCR with universal primer pairs. The PCR results showed the distribution frequencies of cry, cyt, and vip genes among the strains: cry1 (100%), vip3 (100%), cry2 (83.3%), cry4 (20%), and cyt1 (30%). PCR revealed diverse gene profiles among the Bt strains, with 5 distinct profiles identified. Regarding insecticidal activity, strains Bt8, Bt11, Bt26, and Bt28 demonstrated high pathogenicity, with mortality rates ranging from 97% to 100% against codling moth caterpillars, outperforming other Bt isolates.

Flavonoids as bio-insecticides: Harnessing plant metabolites as a biochemical shield against insectsReview

Thamaraikannan Sivakumar, Sunilkumar Devanathan, Parthasarathi Ganesan, Kavithamani Duraisamy, Murugan Marimuthu, Vellaikumar Sampathrajan, Karthikeyan Adhimoolam, Senthil Natesan (ORCI

[Ahead of Print]CAAS Agricultural Journals, X:X | DOI: 10.17221/56/2025-PPS

The global decline in crop production poses a significant threat to food security, particularly in the context of a growing human population. Among various environmental constraints on agriculture, biotic stress, particularly that caused by insect pests, remains a major reason for yield losses. Traditionally, synthetic pesticides have been used to manage insect infestations; however, their excessive and non-targeted application has raised serious concerns regarding environmental pollution, adverse health effects, and the accelerated development of pesticide-resistant pest populations. In this context, plant-derived biocactive compounds, particularly flavonoids, have emerged as promising bioinsecticides due to their potent insecticidal properties. Flavonoids, a diverse group of secondary metabolites found abundantly in plants, exhibit strong insecticidal activity by disrupting insect digestion, interfering with nutrient absorption, and inhibiting growth and metamorphosis. These bioactive compounds act through multiple mechanisms, reducing the likelihood of resistance development while offering an eco-friendly alternative to conventional chemical pesticides. Additionally, flavonoids contribute to integrated pest management strategies by enhancing plant defence responses and synergising with other bioinsecticides. Despite their potential, research on flavonoid-based insect control remains limited, particularly in terms of their formulation, stability, and large-scale applicability. Further studies are needed to investigate their interactions with insect physiology, optimise delivery methods, and assess their environmental impact. Advancing flavonoid-based bioinsecticides can contribute significantly to sustainable pest management in modern agriculture, reducing dependence on synthetic pesticides while preserving ecosystem balance. This review examines the potential role of flavonoids as biopesticides in pest management, highlighting the existing research gaps and prospects.

Linking seasonal fractional vegetation cover dynamics with soil organic carbon stock and microbial indicators in tropical agroecosystemsOriginal Paper

Ni Made Trigunasih, Moh Saifulloh, Ida Bagus Putu Bhayunagiri, Zulkarnain Zulkarnain

[Ahead of Print]CAAS Agricultural Journals, X:X | DOI: 10.17221/96/2025-SWR


Reliable indicators of early soil biological change remain limited in tropical agroecosystems, where soil organic carbon (SOC) stocks may respond more slowly than microbial processes. We evaluated whether seasonal vegetation dynamics derived from Sentinel-2 fractional vegetation cover (FVC) are associated with spatial variation in SOC stock and microbial indicators in Jembrana, Bali, Indonesia. We mapped seasonal FVC from 2019 to 2024 and derived site-level metrics of mean cover and temporal variability (standard deviation, anomaly, coefficient of variation, and a temporal stability index). In July 2023, we sampled topsoil (0–30 cm) at 12 sites representing contrasting land uses and topographic settings. We calculated SOC stock from organic carbon concentration, bulk density, and sampling depth, and measured basal respiration and culturable microbial density (colony-forming units, CFU). Vegetation cover peaked consistently during the wet season (December to February), and mean site FVC ranged from 0.31 to 0.99. Mean FVC showed positive but non-significant associations with culturable microbial density (Spearman’s ρ = 0.48, P = 0.114) and basal respiration (ρ = 0.29, P = 0.361), whereas higher vegetation variability metrics tended to coincide with lower culturable microbial density (ρ = –0.43 to –0.51, P = 0.090 to 0.163). SOC stock showed near-zero coefficients and no statistical evidence of association with vegetation metrics (ρ = 0.09, P = 0.781) or microbial indicators (ρ = 0.01, P = 0.975). Principal component analysis of FVC traits explained 99.65% of the variance and separated sites along a gradient from stable, high cover to more variable, lower cover. Overall, FVC stability metrics captured spatial differences that were directionally consistent with microbial indicators, but associations were not statistically significant in this dataset (n = 12). Larger, replicated studies with repeated soil sampling are required to evaluate whether seasonal FVC metrics have robust predictive utility for SOC stock and soil biological indicators.

Net blotch (Pyrenophora teres Drechsler): An increasingly significant threat to barley productionReview

Andrija Tomiæ, Vojislav Trkulja, Slavica Matiæ, Nenad Trkulja, Renata Ilièiæ, Marco Scortichini, Tatjana Popoviæ Milovanoviæ

Plant Protect. Sci., 2024, 60(1):1-30 | DOI: 10.17221/122/2023-PPS

Pyrenophora teres is a pathogen causing a net blotch disease in cultivated barley, which is present worldwide and can thus significantly reduce barley yields. This fungus also infects wild barley and other plants of the Hordeum genus, as well as barley grass, wheat, oats and plants from various genera, including Agropyron, Bromus, Elymus, Hordelymus and Stipa. Based on the symptoms it causes on the infected barley plants, the pathogen can be divided into two forms: P. teres f. teres, which causes net-like symptoms, and P. teres f. maculata, which causes blotchy symptoms. Infected seeds, stubble and plant debris, and volunteer and weed plants represent primary sources of pathogen inoculum. During the growing season, the pathogen enters a sexual stage, developing pseudothecia with asci and ascospores. This is followed by an asexual stage, during which conidiophores with conidia are formed. The conidial (anamorphic) stage is much more common, whereby conidia is a source of inoculum for secondary infection during the barley growing season. The first symptoms appear at the end of winter and the beginning of spring, often during the tilling phase. The most characteristic symptoms form on barley leaves. Frequently, symptoms of the net form can be mistaken for other diseases occurring on barley, making molecular analysis essential for accurate detection of P. teres, its forms, mating types and hybrids. Current net blotch control measures are based on the combined application of cultural, chemical and biological control methods and the selection of resistant varieties.

Salt acclimation induced salt tolerance in wild-type and chlorophyl b-deficient mutant wheatOriginal Paper

Zhiyu Zuo, Fan Ye, Zongshuai Wang, Shuxin Li, Hui Li, Junhong Guo, Hanping Mao, Xiancan Zhu, Xiangnan Li

Plant Soil Environ., 2021, 67(1):26-32 | DOI: 10.17221/429/2020-PSE

Salt acclimation can promote the tolerance of wheat plants to the subsequent salt stress, which may be related to the responses of the photosynthetic apparatus. The chlorophyl (Chl) b-deficient mutant wheat ANK 32B and its wild type (WT) were firstly saltly acclimated with 30 mmol NaCl for 12 days, then subsequently subjected to 6-day salt stress (500 mmol NaCl). The ANK 32B mutant plants had lower Chl b concentration, which was manifested in the lower total Chl concentration, higher ratio of Chl a/b and in reduced photosynthetic activity (Pn). The effect of salt acclimation was manifested mainly after salt stress. Compared to non-acclimated plants, the salt acclimation increased the leaf water potential, osmotic potential (Ψo) and K concentration, while decreased the amount of Na+ and H2O2 in WT and ANK 32B under salt stress, except for Ψo in ANK 32B. In addition, the salt acclimation enhanced the APX (ascorbate peroxidase) activity by 10.55% and 33.69% in WT and ANK 32B under salt stress, respectively. Compared to the genotypes, under salt stress, the Ψo, Fv/Fm, Pn and gs of mutant plants were 5.60, 17.62, 46.73 and 26.41% lower than that of WT, respectively. These results indicated that although the salt acclimation could alleviate the negative consequences of salt stress, it is mainly manifested in the WT, and the ANK 32B plants had lower salt tolerance than WT plants, suggesting that lower Chl b concentration has a negative effect on the salt acclimation induced salt tolerance in wheat.

Inorganic improver and straw returning promote corn growth and improve the quality of saline soilsOriginal Paper

Jipeng Wang, Junchuan Huang, Xinyu Hou, Quangang Yang, Hong Pan, Hui Wang, Fei Han, Yanhong Lou, Yuping Zhuge

Plant Soil Environ., 2025, 71(3):232-247 | DOI: 10.17221/35/2025-PSE

Soil salinisation is a major constraint on food security and agricultural development, and remains a critical concern in the agricultural sector. In this study, we examined the effects of three straw return methods – straw mulching, straw burial, and a combination of straw mulching and burial – along with inorganic amendments (CaSiO3 and MgSO4) on maize growth, soil organic matter, bulk density, salinity, and the contents of individual salt base ions. A 120-day planting experiment was conducted using soil columns and included maize cultivation under irrigation and drenching conditions. The combined treatments (straw return with Ca-Mg application) were more effective in reducing salinity and improving soil properties than straw return alone. Na+, K+, Cl, and HCO3 contents, as well as soil bulk density, decreased by 45.99–48.43, 28.07–28.36, 20.91–24.17, 18.93–21.03, and 7.64–8.40%, respectively. Regarding crop growth promotion, compared with the single treatment, the combined application of straw return with Ca-Mg (PI, SPI) resulted in a 6.46–8.30% increase in superoxide dismutase activity, an 8.66–10.83% reduction in malondialdehyde content, a 12.71–22.70% increase in total root length, a 13.41–24.14% increase in root surface area, and a 12.46–19.02% increase in root volume. Taken together, integrating straw return with a calcium-magnesium mixture represents a promising strategy for improving the quality of coastal saline soils.

Carbon pool in soil under organic and conventional farming systemsOriginal Paper

Magdalena Hábová, Lubica Pospí¹ilová, Petr Hlavinka, Miroslav Trnka, Gabriela Baranèíková, Zuzana Tarasovièová, Jozef Takáè, ©tefan Koco, Ladislav Men¹ík, Pavel Neru¹il

Soil & Water Res., 2019, 14(3):145-152 | DOI: 10.17221/71/2018-SWR

Changes in the agricultural management and climatic changes within the past 25 years have had a serious impact on soil organic matter content and contribute to different carbon storage in the soil. Prediction of soil carbon pool, validation, and quantification of different models is important for sustainable agriculture in the future and for this purpose a long-term monitoring data set is required. RothC-26.3 model was applied for carbon stock simulation within two different climatic scenarios (hot-dry with rapid temperature increasing and warm-dry with less rapid temperature increasing). Ten years experimental data set have been received from conventional and organic farming of experimental plots of Mendel University School Enterprise (locality Vatín, Czech-Moravian Highland). Average annual temperature in this area is 6.9°C, average annual precipitation 621 mm, and altitude 530 m above sea level. Soil was classified as Eutric Cambisol, sandy loam textured, with middle organic carbon content. Its cumulative potential was assessed as high. Results showed linear correlation between carbon stock and climatic scenario, and mostly temperature and type of soil management has influenced carbon stock. In spite of lower organic carbon inputs under organic farming this was less depending on climatic changes. Conventional farming showed higher carbon stock during decades 2000-2100 because of higher carbon input. Besides conventional farming was more affected by temperature.

Quality and in vitro fertilising ability of cryostored Pinzgau bull insemination dosesOriginal Paper

Lucia Olexiková, Linda Dujíèková, Jaromír Va¹íèek, Andrej Balá¾i, Andrea Svoradová, Lenka Ku¾elová, Alexander Makarevich, Peter Ivaniè, Peter Chrenek

Czech J. Anim. Sci., 2024, 69(11):431-440 | DOI: 10.17221/142/2024-CJAS


Applicability of cryopreserved insemination doses is dependent on the quality of the semen after thawing. The aim of the study was to check the options of new markers for the assessment of sperm quality to predict their fertilisation ability. In five bulls of the Pinzgau breed, the sperm fertilising ability was determined using the in vitro fertilisation. Bulls were divided according to the achieved blastocyst rate: bulls with good fertilising ability (NOB – 38.6%, KAZ – 28.9%, GAL – 29.3%) and bulls with low fertilising ability (LOH – 19.4%, NUS – 22.1%). In addition to the sperm motility and morphology, we monitored common physiological sperm characteristics: viability, apoptosis, acrosomal status, capacitation, mitochondrial activity and generation of reactive oxygen species using the flow cytometry procedure. Novel fertility-related biomarkers, such as ubiquitination, overexpression of MKRN1, SPTRX-3 and PAWP proteins or histone modification (H3K4me2), were also analysed by flow cytometry. From all monitored parameters, more proper characteristics of impaired in vitro fertilising ability proved to be high incidence of apoptotic markers (YO-PRO, Caspase 3/7) and higher counts of morphologically abnormal spermatozoa. Although the in vitro fertilisation (IVF) test can be an advantageous method for evaluating the sperm fertilising ability, there are still differences between the in vivo and in vitro fertilisation processes, which must be considered for example, when evaluating the sperm capacitation status.

Effects of maize silage withdrawal from finishing ration on weight gain, carcass yield and beef quality of Holstein Friesian × Belgian Blue crossbred bullsOriginal Paper

Tayfun Gündüz, Hayrettin Çayıroğlu

Czech J. Anim. Sci., 2024, 69(6):219-229 | DOI: 10.17221/40/2024-CJAS

This study was practical work in a commercial beef cattle enterprise to offer beef producers different options in a total mixed ration (TMR) design. This study was conducted to determine the effects of withdrawing maize silage from TMR during the finishing period on weight gain, carcass yield and beef quality of meat in beef cattle. Fifty-two Holstein Friesian x Belgian Blue crossbred bulls were used in this study for 126 days. These bulls were divided into four feeding methods described as (i) no maize silage in TMR (C1), (ii) maize silage was withdrawn from TMR two months before slaughter (S1), (iii) maize silage was withdrawn from TMR one month before slaughter (S2), and (iv) maize silage was included in TMR until slaughter (C2). Results showed that the fattening performance of experimental bulls was not affected by treatments, except some colour parameters of the muscle. Also, its chemical composition, pH, water holding capacity, drip loss, thawing loss, cooking loss, shear force, thiobarbituric acid reactive substances and radical scavenging activity were not affected by treatments. To conclude, the withdrawal of maize silage from TMR did not affect fattening performance and meat quality, suggesting that there is no need to withdraw maize silage from TMR during the finishing period of fattening in beef cattle.

High levels of type II Fusarium head blight resistance conferred in wheat by combining wheat gene Fhb1 with Lophopyrum elongatum gene Fhb7The2 Original Paper

Jan Dvorak, Karin R. Deal, Patrick E. McGuire, Emily J. Conley, James A. Anderson, George Fedak, Julia A. Malvick, Han Chen, Hans-Georg Müller

Czech J. Genet. Plant Breed., 2025, 61(1):31-42 | DOI: 10.17221/104/2024-CJGPB

Wheat Fusarium head blight (FHB) leads to losses of grain yield and quality. Ingestion of diseased grain is detrimental to human health due to the mycotoxins present in the grain. Developing resistant cultivars for environments where FHB is prevalent is therefore an important breeding objective. One of the most effective wheat genes conferring type II resistance to FHB is Fhb1, originally discovered in the Chinese cultivar (cv) Sumai 3. Another excellent FHB resistance gene is Fhb7 located on the long arm of Lophopyrum elongatum chromosome 7E. Several alleles of Fhb7 have been identified. Allele Fhb7The2 was found in disomic substitution lines 7E(7A), 7E(7B) and 7E(7D) derived from amphiploid AgCS. The amphiploid was produced from a hybrid Triticum aestivum cv Chinese Spring × L. elongatum. To find if combining Fhb7The2 with Fhb1 confers higher resistance in wheat than single genes, an introgression line derived from AgCS and possessing Fhb7The2 was recurrently backcrossed to bread wheat cv Rollag and MN-Washburn possessing Fhb1. Experimental lines possessing both Fhb7The2 and Fhb1 were developed and validated cytogenetically and with the L. elongatum genome-wide Sequenom SNP MassARRAY. Spikes of these lines, parental cv Rollag and MN-Washburn, and those of disomic addition line 7E possessing Fhb7The2 plus controls were inoculated with Fusarium in a twice-replicated trial in controlled greenhouse environmental conditions. FHB infection rates were significantly lower in lines combining Fhb7The2 with Fhb1 than in materials with Fhb7The2 or Fhb1 alone.

 previous    ...   4   5   6   7   8  9   10   11   12   13   ...    next