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Applications of polycaprolactone in the food industry: A reviewReviewJulio Enrique Oney-Montalvo, Dany Alejandro Dzib-Cauich, Emmanuel de Jesús Ramírez-Rivera, Adan Cabal-Prieto, Luis Alfonso Can-HerreraCzech J. Food Sci., 2024, 42(2):77-84 | DOI: 10.17221/200/2023-CJFS The food industry is always looking for ways to innovate in elaborating and packaging food products to ensure the consumer receives the highest quality. The new proposals include the use of polycaprolactone (PCL), a commonly used biopolymer that is soluble in many organic solvents. The PCL features can be modified by forming blends with other polymers and bioactive molecules to expand their applications in the food industry. For instance, there have been developments in packages and active substances that incorporate microcapsules based on PCL. This review explores the applications of PCL in the food industry, encompassing its role as a biodegradable active package and as an encapsulating agent. The review underscores the potential of this polymer in the context of the food industry. |
Co-application of biochar and melatonin enhances pea (Pisum sativum L.) performance and alleviates cadmium contamination stressOriginal PaperYanfang Wang, Jinzhao Liu, Dong Li, Zhengyang Yan, Ling LiuPlant Soil Environ., 2024, 70(4):195-202 | DOI: 10.17221/462/2023-PSE Sole biochar addition or exogenous melatonin application can decrease cadmium (Cd) toxicity in polluted soils and improve plant performance and growth. Yet the additive effects of biochar and melatonin application on plant growth, oxidative stress modulation and Cd absorption remain unclear. We conducted a pot experiment to study the combined effects of melatonin, biochar and Cd stress on pea (Pisum sativum L.) seedling growth, antioxidant enzyme activities, photosynthesis parameters and Cd uptake. Results showed that Cd addition significantly decreased pea growth, chlorophyll content, net photosynthesis rate (Pn), transpiration rate (Tr), stomatal conductance (gs), and increased intercellular CO2 concentration (ci) and oxidant enzyme activities when compared to non-Cd contaminated treatment. Exogenous applications of the biochar or melatonin alone significantly decreased the harmful effects of Cd stress and promoted pea seedling growth. Moreover, soil remediation with biochar could more effectively improve pea growth, chlorophyll contents, and photosynthesis parameters and contribute to Cd immobilisation; the melatonin treatment alone could more effectively increase antioxidant enzyme activities. The treatments of biochar and melatonin showed an additive result and had the largest promoting in pea growth, antioxidant enzyme activities, and lowest Cd contents in pea tissue and soil. These results indicate that the combined use of melatonin and biochar is more effective at reducing Cd uptake by pea tissues and alleviating Cd harm to pea plants. |
Effects of combined application of animal slurry and mineral fertiliser on rice yield and soil nitrogen cycle microbesOriginal PaperPengcheng Wang, Siyuan Jin, Henglin Xiao, Zhi Zhang, Cheng Hu, Yan Qiao, Donghai Liu, Xifa Guo, Xiangrong PengPlant Soil Environ., 2024, 70(4):220-228 | DOI: 10.17221/315/2023-PSE This paper studied the response of rice yield and soil nitrogen (N) cycling microorganisms to the combined application of animal slurry and mineral fertiliser. A pot experiment was conducted on typical yellow-brown paddy soil. There were five treatments: (1) CK – no N fertilisation; (2) S0 – mineral fertilisation; (3) S30 – 30% slurry with 70% mineral fertilisation; (4) S60 – 60% slurry with 40% mineral fertilisation; and (5) S100 – slurry application. Rice yield, yield components, and soil properties were investigated at harvest. The abundance of soil N cycle functional genes abundance was quantified via quantitative real-time PCR. The rice yield reached a high level when the proportion of slurry used to replace mineral fertiliser was 30–50%. The yield in response to mineral fertiliser (S0) was equivalent to that in response to no N fertilisation since the formation of effective panicles was inhibited. With the slurry replacement ratio increase, the available phosphorus and potassium contents in the soil improved, but the nitrate content decreased. Considering the entire soil N cycle, nitrogen-fixing microbes (nifH), ammonia-oxidising archaea (AOA amoA) and nitrite-reducing microbes (nirS and nirK) had greater abundances, reaching 108 copies. Compared with those in the S0 treatment, the abundances of most N cycle functional genes in the S30 treatment, except for napA, significantly increased from 31.2% to 100.9%, and the increase in the abundance of nirS and nosZ in the S100 treatment reached 4 times, which was obviously greater than that of the other genes. Correlation analysis revealed that high soil pH promoted N fixation and nitrification, while NH4+-N had the opposite effect on N fixation and nitrification, and available phosphorus and potassium actively influenced denitrification. These results showed that a 30–50% slurry application ratio was recommended for rice, which was beneficial for maintaining high yields and high abundances of soil N cycle functional genes. |
Comparison of two soil quality assessment models under different land uses and topographical units on the southwest slope of Mount MerapiOriginal PaperRetno Meitasari, Eko Hanudin*, Benito Heru PurwantoSoil & Water Res., 2024, 19(2):77-89 | DOI: 10.17221/76/2023-SWR
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Effect of seed invigoration by osmo-conditioning on radicle emergence and physiological parameters of the true seed of shallot (Allium ascalonicum L.)Original PaperBlair Moses Kamanga, Eny Widajati, Satriyas Ilyas, Endah R. PalupiHort. Sci. (Prague), 2024, 51(1):39-50 | DOI: 10.17221/150/2022-HORTSCI Seed deterioration resulting from production and storage factors is the major cause of differences in the seed vigour that results in low seedling emergence in both the laboratory and in the field. An experiment was conducted to evaluate the effect of seed invigoration by osmo-conditioning on the radicle emergence and the physiological parameters of naturally deteriorated seed lots of the true seed of shallots. The experiments were arranged in a completely randomised design with a repeated measurement for radicle emergence and a randomised complete block design for seedling vigour in the field with four replicates. The results indicated that the radicle emergence of the invigorated seed with ZnSO4 correlated well with the seed viability and vigour parameters for seed lots stored under uncontrolled conditions. The radicle emergence of invigorated seeds stored under the uncontrolled condition were more predictive and strongly correlated with the seedling vigour parameters in the field, i.e., the field emergence, field emergence rate and mean emergence time with r = 0.968, r = 0.970 and r = –0.947, respectively. Furthermore, the coefficients of determination were significant (P < 0.05) with R2 = 0.936 field emergence, R2 = 0.941 field emergence rate and R2 = 0.898 for the mean emergence time. Seed invigoration with 0.5% ZnSO4 further significantly reduced the time of a single count of RE from 72 hours and 68 hours to 60 hours with field prediction rates ranging from 90–99%. It was concluded that the radicle emergence of TSS can be improved by invigorating the seeds with 0.5% ZnSO4 thereby increasing the germination percentage, vigour index, and germination rate and reducing the mean germination time. |
Metabolite changes in cucumber xylem sap under rhizosphere aerationOriginal PaperHongbo Chen, Xu ZhaoHort. Sci. (Prague), 2024, 51(1):51-58 | DOI: 10.17221/156/2022-HORTSCI The impact of rhizosphere aeration on the composition of xylem sap in cucumber grown in soil was studied to determine its effects on (i) water and nutrient uptake, (ii) xylem transport, and (iii) amino acid synthesis in the roots. Plants grown under three different aeration conditions were subjected to progressive gas stress throughout the whole growth period. The shoot and root growth, xylem nitrate (NO3–) concentration, potassium (K+) concentration, xylem sap flow rate, and amino acid concentrations were higher in the Z1 treatment plants than in the control (CK) plants, and the former also showed a lower CO2 (0.25–0.84%) and a higher O2 (18.22–20.02%). However, the Z3 treatment plants exhibited decreased xylem loading of amino acids, NO3– concentrations, and K+ concentrations and a lower flow rate of xylem sap, which restricted shoot and root growth due to poor aeration caused by a higher CO2 (0.75–3.68%) and a lower O2 (11.51–18.6%). Furthermore, the xylem pH in these plants was lower by approximately 0.17 units, and the conductivity was decreased by approximately 0.31 mS/cm. Based on the observed results, the CO2 and O2 in the soil can potentially regulate root and shoot growth and the xylem sap composition in cucumber. Therefore, rhizosphere aeration is important for the vigorous growth of plants. |
Improving photosynthesis and the ascorbate-glutathione cycle of own-root and grafted-root chrysanthemums by brassinolide under drought stressOriginal PaperPeng Ming Yang, Rui Jiao Yang, Song Tao HeHort. Sci. (Prague), 2024, 51(1):59-67 | DOI: 10.17221/177/2022-HORTSCI Many studies have demonstrated that brassinolide improves the drought tolerance of plants. This study aims to test whether the drought tolerance of chrysanthemums can be improved by brassinolide and to clarify the underlying physiological mechanism. An own-root chrysanthemum and a corresponding grafted-root line (Artemisia annua rootstock) were treated with brassinolide under three water levels in a randomised complete block design with five replications. The results showed that brassinolide increased the relative water content, net photosynthetic rate, chlorophyll (Chl) fluorescence parameters, Rubisco, ascorbate peroxidase, glutathione reductase, dehydroascorbate reductase and monodehydroascorbate reductase activities, ascorbate/dehydroascorbate, glutathione/oxidised glutathione and dry mass, and reduced the H2O2 content in the own-root and grafted-root chrysanthemums, especially under drought stresses. The magnitude of the changes to the parameters was greater in the own-root line than in the corresponding grafted-root line under brassinolide treatment. The above parameters showed significant differences (P < 0.05) between the brassinolide chrysanthemums and the corresponding non-brassinolide chrysanthemums under drought stresses. This might be the physiological mechanism of improved drought tolerance by brassinolide in chrysanthemums. |
Enhancing rice yield, quality, and resource utilisation with slow-release fertiliser in alternate wetting and drying irrigationOriginal PaperKeji Hua, Peng Yang, Jieyu Zhou, Wei Liao, Jun He, Junlin Zheng, Chi Tang, Yuqin Li, Baolong ZhangPlant Soil Environ., 2024, 70(5):253-262 | DOI: 10.17221/450/2023-PSE Partial slow-release fertiliser substitution for urea combined with water-saving irrigation may synergistically improve rice yield, quality, water, and nitrogen (N) utilisation. A field experiment to evaluate different combinations of irrigation regimes: alternate wetting and drying irrigation (AWD) and flooding irrigation (FI), and N strategies: N0 (no N fertiliser); N1 (100% conventional fertiliser); N2 (100% SCF – sulphur-coated fertiliser); N3 (70% SCF + 30% urea), and N4 (50% SCF + 50% urea) on efficient rice production. Results indicated that higher substitution rates of SCF (N2 and N3) increased total N and ammonia N in surface water, leachate, and soil while reducing nitrate N relative to N1. The N3 strategy showed the highest yields, dry matter, total N uptake, and water N utilisation due to a nutrient release pattern that matched rice growth requirements. AWD yielded 5% lower than FI, except for the N3 strategy, but protein content increased by 12%, and amylose content dropped by 17%. The structural equation model analysis suggested that SCF positively impacted yield by influencing surface water total N and soil total N. Our findings indicate that implementing AWD alongside a 70% SCF basal fertiliser and 30% urea topdressing can optimise rice yield and quality while effectively managing water and fertiliser resources in the middle-lower Yangtze River Basin. |
The effect of various factors (light, temperature, salt, and drought) on germination of Bromus sterilis L.Original PaperKateøina Hamouzová, Jaromír ©uk, Soham Bhattacharya, Jakub Mikulka, Veronika Valièková, Michaela Koláøová, Josef SoukupPlant Soil Environ., 2024, 70(5):287-295 | DOI: 10.17221/21/2024-PSE Bromus sterilis L. (barren brome) is one of the most economically important noxious grass weeds in the winter cereal fields of Europe. Its ecological behaviour in this agro-climatic region should be assessed for effective weed control strategies. The present study was conducted to assess the dormancy and germination response of the B. sterilis population from the Czech Republic under thermal, light, and stress conditions. The dormancy loss experiment revealed that seeds exposed to the light regime showed a remarkably lower percentage of germination, and under alternating temperatures of 10/20 °C in dark conditions, rapid loss of primary dormancy was observed. This population was found to germinate across a wide temperature range of 5–35 °C, with the highest germination rate at 25 °C (T50 = 1.14 days in dark, 1.21 days in light) and the germination time increased with decreasing temperatures below 25 °C. Further, due to fitness advantage, herbicide-resistant (R) biotypes were found to be more stress-tolerant than susceptible (S) biotypes under salinity and drought conditions. In the highest stress conditions, the germination of S biotypes was negligible, while R biotypes can germinate under high stress, but germination decreased below 25 °C. The current findings may add value to effective weed control strategies using prediction models based on seed dormancy and germination values under different hydrothermal conditions. |
Effect of seed weight and biostimulant seed treatment on establishment, growth and yield parameters of winter oilseed rapeOriginal PaperDavid Beèka, Lucie Beèková, Matìj Satranský, Kateøina PazderùPlant Soil Environ., 2024, 70(5):296-304 | DOI: 10.17221/98/2024-PSE This study evaluated the effect of seed weight and seed treatment on yield and growth parameters in a three-year field trial. Seed weight treatments were tested in three levels of thousand seed weight (TSW): low 4.28 g, medium 5.00 g and high 5.69 g, with and without a biostimulant seed treatment of Lumibio Kelta. Although statistically significant differences were not found in all experimental years, the three-year results showed that sowing seeds with higher seed weight increased the initial and final stand counts, root length, seed yield and oil content. The final stand at harvest time averaged over the three years ranged from 23.0 (low TSW) to 29.5 plants per 1 m2 (high TSW). Plants from high TSW seed had an average of 1.1 cm longer roots than plants from low TSW seed. The average yield increased with TSW: 5.49 t/ha (low TSW), 5.86 t/ha (medium TSW), and 5.94 t/ha (high TSW). High TSW also yielded higher oil content (45.77%) compared to the medium (45.25%) and low TSW (45.27%). No statistical difference could be detected in the initial emergence counts or final seed quality according to seed treatment. Seed treatment with the biostimulant increased root length and seed yield. Plants from seeds treated with the biostimulant had roots with an average of 0.6 cm longer, yielding 0.2 t/ha higher than the non-treated ones. |
Effects of red-blue light spectrum on growth, yield, and photo-synthetic efficiency of lettuce in a uniformly illumination environmentOriginal PaperShipeng Luo, Jun Zou, Mingming Shi, Senmao Lin, Dawei Wang, Wenbin Liu, Yan Shen, Xiaotao Ding, Yuping JiangPlant Soil Environ., 2024, 70(5):305-316 | DOI: 10.17221/480/2023-PSE This study comprehensively investigates the impact of varying red-to-blue light ratios on the growth of Spanish lettuce. The research considers various factors such as growth morphology, photosynthetic parameters, and chlorophyll fluorescence. Lettuce was cultivated in an environment with a photosynthetic photon flux density (PPFD) of 200 ± 20 μmol/m2/s and a photoperiod of 16 h per day. The experiment incorporated eight distinct light treatment methodologies, with the red-to-blue light ratios ranging from 2 : 8 (R2B8) to 9 : 1 (R9B1). The data implies that during the initial 20 days of growth, groups exposed to a higher proportion of red light demonstrated superior growth. In particular, the R9B1 group exhibited the highest increase in plant height. The photosynthetic performance of leaves (net photosynthetic rate, stomatal conductance, and transpiration rate) showed a tendency to rise with a decreasing red-to-blue ratio within a particular range, peaking at R3B7. However, both the dry matter content and fresh weight were relatively lower under the R3B7 light quality ratio. The results indicate that cultivating lettuce under the R8B2 ratio led to optimal outcomes. This group significantly outperformed the other test groups in terms of weight and exhibited higher photosynthetic rates. Despite exhibiting lower stomatal conductance, this group reduced energy consumption and ultimately achieved the highest overall weight. |
Evaluation of protein quality of wheat-rye flour blends by use of two small-scale analytical methodsOriginal PaperIvan ©vec, Petra SmrèkováCzech J. Food Sci., 2024, 42(2):118-126 | DOI: 10.17221/187/2023-CJFS
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Unravelling the bidirectional impact of Chinese agricultural subsidy policy on agricultural efficiency and farmers‘ income through panel data analysisOriginal PaperYungang Tang, Haojie Liao, Ye Wu, Gang LeiAgric. Econ. - Czech, 2024, 70(4):165-177 | DOI: 10.17221/335/2023-AGRICECON
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Corporate social responsibility and the relationship to stakeholders in large agricultural holdings in the Czech RepublicOriginal PaperMarie ©impachová Pechrová, Ondøej ©impachAgric. Econ. - Czech, 2024, 70(4):155-164 | DOI: 10.17221/369/2023-AGRICECON
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Impact of production outsourcing on the adoption of low-carbon agricultural technologies in ChinaOriginal PaperRuirui Du, Aftab Khan, Rui Shi, Yujie Shen, Minjuan ZhaoAgric. Econ. - Czech, 2024, 70(4):187-197 | DOI: 10.17221/385/2023-AGRICECON
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Digital image processing for preliminary detection of infected porang (Amorphophallus muelleri) seedlingsOriginal PaperAryanis Mutia Zahra, Noveria Anggi Nurrahmah, Sri Rahayoe, Rudiati Evi Masithoh, Muhammad Fahri Reza Pahlawan, Laila RahmawatiRes. Agr. Eng., 2024, 70(2):111-121 | DOI: 10.17221/79/2023-RAE Porang (Amorphophallus muelleri) is an Indonesian parental plant tuber developed vegetatively from bulbils during dormancy and harvested through petiole detachment for the industrial production of glucomannan. Pathogenic fungi and whiteflies can cause infection during harvesting and storage, destructing plant cells as well as reducing seed quality and crop yields. Therefore, this study aimed to develop a calibration model for detecting infected and non-infected porang bulbils using a computer vision system. Image parameters such as colour (red, green, blue – RGB and hue, saturation, intensity – HSI), texture (contrast, homogeneity, correlation, energy, and entropy), and dimensions (width, area, and height) were evaluated on 90 samples in three positions. The results showed that the majority of image quality properties were significantly associated with non–infected and infected porang bulbils as showed by Pearson correlation values of 0.901 and 0.943, respectively. Discriminant analysis based on image attributes effectively classified non-infected and infected seedlings, achieving a model accuracy of 97.0% for correctly classified cross-validated grouped cases. Therefore, computer vision can be used for the preliminary detection of fungal infection in porang bulbils, as evidenced by its high accuracy and outstanding model performance. |
Influence of daily feed ration on growth and condition of juvenile pikeperch (Sander lucioperca) reared in a recirculating aquaculture system (RAS)Original PaperTomá¹ Pìnka, Oleksandr Malinovskyi, Jitka Koláøová, Václav Kuèera, Tomá¹ PolicarCzech J. Anim. Sci., 2024, 69(6):230-242 | DOI: 10.17221/33/2024-CJAS
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Ferric oxide nano-priming enhances photosynthetic and physicochemical properties of sunflower (Helianthus annuus L.) microgreensOriginal PaperAayushi Gupta, Rohit Bharati, Jan Kubes, Pavla Vachova, Daniela Popelkova, Lovely Mahawar, Marek Zivcak, Xinghong Yang, Marian Brestic (ORCID: 0000-0003-34Plant Soil Environ., 2024, 70(11):702-711 | DOI: 10.17221/272/2024-PSE In modern agriculture, nano-priming represents an innovative approach, harnessing the power of nanotechnology to enhance crop yields and nutrition. However, to effectively harness the potential of nanoparticles (NPs) for agriculture applications, understanding their mode of action and optimal application rates for positive effects on microgreen growth and physiology is critical. In this interdisciplinary study, we investigated the priming of sunflower seeds with a range of concentrations (25, 50, and 100 mg/L) of ferric oxide (Fe2O3) nanoparticles (FeNPs) and compared them with control samples. Our findings revealed a significant increase in plant biomass, leaf size, and photosynthetic activity in treated samples. The activities of photosystems I and II increased with higher FeNPs concentration. The treated samples exhibited elevated levels of total phenolics, anthocyanin, and antioxidant enzyme activity, along with increased macronutrients and micronutrients. These findings highlight the potential of FeNPs as a promising tool for enhancing plant growth and physiology in sunflower microgreens. |
Information sources in agricultureOriginal PaperJan Jarolímek, Jakub Samek, Pavel ©imek, Michal Stoèes, Jiøí Vanìk, Jan PavlíkPlant Soil Environ., 2024, 70(11):712-718 | DOI: 10.17221/361/2024-PSE The aim of this study is to define data sources and propose methods for effective and secure data management in an agricultural enterprise in the context of using data for decision support. Current developments in information and communication technology (ICT) have contributed towards the increase in the amount of generated data in various fields. The main data sources for agricultural enterprises are the farm itself, suppliers, government, market, and research. The use of smart solutions, artificial intelligence, and other innovative practices in agriculture is discussed at many conferences, in various journals, strategies and project plans. Data is the essential raw material for all these solutions. Large amounts of data cannot be analysed efficiently with spreadsheet programs. Currently, there are trends in the use of data, for example, in business intelligence (decision-making systems), e.g. tools using online transaction processing (OLAP) or process automation or the possibility of e.g. tracing the origin of food. The availability and possibility of creating large data sets bring many challenges related to managing that data. To effectively manage farm data, it is essential to have a well-developed data management plan (DMP) used to formalise the processes related to handling. A DMP mainly addresses archiving, backup, licensing and other important aspects of data management. The challenges and developments in farm data management include incorporating artificial intelligence into data analysis and security. Food is classified as an "Entity of Critical Importance" in the NIS2 EU Directive, which also deals with cybersecurity issues. |
Target price policy and rural household income: Evidence from ChinaOriginal PaperGenjin Sun, Yanxiu Liu, Yurong ZhuAgric. Econ. - Czech, 2024, 70(5):226-243 Agricultural subsidy policy can improve the planting enthusiasm of rural households by increasing their income. It is of great significance to assess and summarise the effect of the soybean and cotton target price subsidy policy and to determine future policy direction. Using the national rural fixed-observation point socioeconomic survey data from 2009 to 2017, the study employed the difference-in-differences (DID) method to evaluate the impact of the target price policy (TPP) on rural household income in China. TPP had no significant impact on the total income of rural households. Specifically, TPP increased the farm income of rural households but simultaneously reduced the wage income and had no significant impact on the other income. Moreover, the impact of TPP on rural household income varied with the planting scale and income level; the effect of TPP was strong among the non-poor or scale operation rural households. TPP implementation affected rural household farm and wage income by affecting farmers’ allocation of working time and cost input. Therefore, implementing TPP should consider farmers’ participation in non-farm employment, further adjust the subsidy intensity and scope, and combine direct subsidies with the poverty reduction effect in poor areas. The contribution of this article is to explore the implementation effect of target price subsidy policies from the perspective of farmers’ income, to deconstruct farmers’ income, and explore the mechanism of policy action. This paper provides a theoretical basis and policy inspiration for China to improve and adjust the agricultural subsidy policy, mobilise farmers’ enthusiasm to cultivate, and ensure national food security. |
Limosilactobacillus reuteri L26 BiocenolTM and its exopolysaccharide: Their influence on rotavirus-induced immune molecules in enterocyte-like cellsOriginal PaperP Schusterova, D Mudronová, K Loziakova Penazziova, V Hajducková, T CsankVet Med - Czech, 2024, 69(5):169-176 | DOI: 10.17221/106/2023-VETMED This study aimed to evaluate the immunomodulatory effect of the probiotic Limosilactobacillus reuteri L26 BiocenolTM (L26) and its purified exopolysaccharide (EPS) with respect to antiviral innate immune response. In our experiment, we used porcine epithelial IPEC-J2 cells as a model of the intestinal barrier in a homologous infection by porcine Rotavirus A strain OSU6 (RVA). The production of selected molecules of non-specific humoral immunity was evaluated at the mRNA level. The EPS alone significantly increased the level of interferon λ3 (IFN-λ3) mRNA in the non-infected IPEC-J2 cells (P < 0.001). We also tested whether the treatment of IPEC-J2 cells by L26 or EPS influences the replication of RVA by virus titration and real-time PCR. We found that a pre-treatment in combination with subsequent continuous stimulation has no influence on the RVA replication. However, both treatments significantly decreased the RVA-induced production of IFN-λ3 (P < 0.05) and the “SOS” cytokine interleukin 6 (IL-6; P < 0.01), already at the transcription level. In addition, the EPS treatment resulted in significantly increased IL-10 mRNA in the RVA-infected cells. In summary, we assume an immunoregulatory potential of L. reuteri L26 BiocenolTM and its EPS in the local intestinal antiviral immune response. |
Comparative analysis of unmanned aerial vehicle and conventional spray systems for the maize fall armyworm Spodoptera frugiperda (J.E. Smith) (Lepidoptera; Noctuidae) managementOriginal PaperP.S. Shanmugam, T. Srinivasan, V. Baskaran, A. Suganthi, B.Vinothkumar, G. Arulkumar, S. Backiyaraj, S. Chinnadurai, V. Somasundaram, N. Sathiah, N. Muthukrishnan, S.V. Krishnamoorthy, K. Prabakar, S. Douresamy (email: douressamy.s@tnau.ac.iPlant Protect. Sci., 2024, 60(2):181-192 | DOI: 10.17221/96/2023-PPS Insecticidal interventions at critical stages of maize are an important strategy for managing invasive insect pest fall armyworm (FAW) Spodoptera frugiperda (J.E. Smith). Conventional spraying systems cannot be used over larger areas, and the insecticide application using unmanned aerial vehicles is becoming popular among peasants. As the FAW resides inside the maize whorls, targeted insecticide application is necessary for effective management. The efficacy of (UAV) spray with different types of nozzles was compared with the conventional spray system, namely high-volume spray and Control droplet applicator. The other spray systems' droplet density, efficacy, and residues of insecticides in plants, soil and water were studied. The UAV droplet density up to 5 m swath recorded no significant variation for both nozzles. A UAV with an atomizer nozzle was as effective as a high-volume spray in reducing the FAW infestation. The residue analysis of leaf samples from the study area revealed more residues in the control droplet applicator and UAV atomizer nozzle. The per cent reduction of initial deposits in the top, middle and bottom maize leaves was least in the UAV atomizer nozzle. The insecticide residues in the study sample area were also below the detectable limit. UAV usage in maize saves time and reduces FAW damage as that of high-volume sprayers. |
Aceria artemisiifoliae Vidoviæ & Petanoviæ (Acari: Eriophyoidea) on common ragweed – the second record in the worldShort CommunicationPeter Tóth, Monika Tóthová, Nikola Andjelkoviæ, Slavica Marinkoviæ, Tatjana Cvrkoviæ, Biljana VidoviæPlant Protect. Sci., 2024, 60(2):207-211 | DOI: 10.17221/13/2024-PPS Common ragweed – Ambrosia artemisiifolia L. (Asteraceae) is an invasive plant species in Europe native to North America. Most of the records of known eriophyid mites on different ragweed species are from their native range. Our field experiments in Slovakia, 2016–2023, aimed to identify specific species feeding on common ragweed. We searched for symptomatic plants and collected growing tips, which were then preserved in 70% ethanol for further study. A recently described species of eriophyid mite, Aceria artemisiifoliae Vidoviæ & Petanoviæ (Acari: Eriophyoidea), was found in western and eastern Slovakia. This is the first record of the species in Slovakia and the second record in the world. It remains unclear whether this species is invasive like Ambrosia, and whether it could be used as a potential biological control agent. |
Partitioned nitrogen fertilisation in peanut rhizosphere and geocarposphere drives specific variation soil microbiomesOriginal PaperHaiyan Liang, Qi Wu, Liyu Yang, Dianxu Chen, Pu ShenPlant Soil Environ., 2024, 70(6):342-355 | DOI: 10.17221/498/2023-PSE Peanut is a plant characterised by belowground fruiting that absorbs nutrients not only through its roots but also through its pods. However, little is currently known regarding the species of bacteria that contribute to nutrient absorption and utilisation in this plant’s pod and root zones. This study examined the effects of root and pod area nitrogen (N) fertiliser application on peanut rhizosphere and geocarposphere microbial communities and functions. Using two peanut cultivars [nodulated Huayu 22 (H) and non-nodulated NN-1 (B)], we applied the following four treatments: no N fertiliser (HT1, BH1); N applied to geocarposphere soil (HT2, BT2); N applied to rhizosphere soil (HT3, BT3), and N applied to both rhizosphere and geocarposphere soil (HT4, BT4). The results revealed that compared with HT1 and BT1, the HT3, HT4, BT3, and BT4 treatments promoted increases in total plant accumulated N of 11.2, 30.1, 38.5, and 9.9%, respectively. Moreover, N input contributed to an increase in the abundance of bacteria colonising the surrounding pods, which differed significantly from bacteria colonising the rhizosphere. Among the top four bacterial phyla detected, we recorded a significant increase in the relative abundances of Proteobacteria and Gemmatimonadetes in response to treatments HT2 and HT4, whereas the highest relative abundances of Acidobacteria and Actinobacteria were detected in HT3 plants. Regarding cultivar B, we detected increases in the relative abundances of Bacteroidetes and Gemmatimonadetes in response to the BT2 and BT4 treatments, and in the relative abundance of Actinobacteria in BT3 treated soil. The findings of FAPROTAX functional analysis revealed clear differences among the T2, T4, and T3 treatments of two peanut cultivars concerning the functional groups with the highest relative abundances. These findings will make a considerable contribution to enhancing our understanding of the effects of N fertilisation on soil microbial structure and function in the rhizosphere and geocarposphere of peanuts and can provide a basis for identifying beneficial bacteria for promoting N utilisation and yield enhancement. |
Physiological and metabolic responses of Lolium perenne L. roots to acid stress in cadmium-contaminated soilOriginal PaperXingrong Bai, Lili Chen, Zhaojie Wang, T. Ryan LockPlant Soil Environ., 2024, 70(6):366-376 | DOI: 10.17221/494/2023-PSE
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Green synthesis, characterisation, and antibacterial activity of silver nanoparticles obtained from Salvia officinalis extractOriginal PaperNural Karagözlü, Tuğçe ÖzeºerCzech J. Food Sci., 2024, 42(3):163-173 | DOI: 10.17221/4/2024-CJFS
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Accuracy and reliability of tibial torsion measurement using radiography and ultrasound in dogsOriginal PaperM Jeong, K Kwack, J Kim, Y Yu, S HeoVet Med - Czech, 2024, 69(12):427-436 | DOI: 10.17221/50/2024-VETMED Tibial torsion assessment is crucial for understanding deformities and malalignments that can lead to joint pathologies in dogs. Different methods such as radiography, computed tomography (CT), and three-dimensional (3D) volume-rendering techniques have been employed to measure tibial torsion. This study compared the accuracy and reliability of tibial torsion angle (TTa) measurements obtained using radiography and ultrasound tilting techniques against those obtained using the 3D volume-rendering method in small-to-medium-sized non-chondrodystrophic dogs. Seven dogs with 11 hind limbs were included in this study. Descriptive statistics revealed mean TTa values for radiography (1.6° ± 5.14°), ultrasound (2.92° ± 3.98°), CT (4.57° ± 3.44°), and 3D volume-rendering method (5.29° ± 3.30°). Intraclass correlation coefficient (ICC) analysis indicated excellent intra- and interobserver agreement between the radiography and ultrasound methods. Correlation analysis showed positive correlations between all the methods. These findings demonstrate that radiography and the ultrasound tilting technique are reliable alternatives for measuring TTa. Although slightly lower ICC values were observed than those of the 3D volume-rendering technique, the radiography and ultrasound methods still exhibited good to excellent reliability, suggesting that these alternative methods could be effective diagnostic tools for assessing TTa in clinical settings with high accuracy and reliability. |
How does single- or double-cropped rice policy influence spatially irrigated land value in China?Original PaperYuqun Dong, Yaming ZhuangAgric. Econ. - Czech, 2024, 70(6):279-290 | DOI: 10.17221/49/2024-AGRICECON
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Unlocking sustainable competitive performance in agro-based small and medium enterprises in South Asian Association for Regional Cooperation countriesOriginal PaperShamim Akhtar, Yi Cui, Stephanie Efua Frimpong, Nosheen RafiAgric. Econ. - Czech, 2024, 70(6):309-319 | DOI: 10.17221/264/2023-AGRICECON
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Comparison of the blossom and shoot susceptibility of European and Asian pear cultivars to Pseudomonas syringae pv. syringaeOriginal PaperIveta Pánková, Václav Krejzar, Radka KrejzarováHort. Sci. (Prague), 2024, 51(2):85-97 | DOI: 10.17221/18/2023-HORTSCI The susceptibility of 14 pear cultivars to the bacterium Pseudomonas syringae pv. syringae, the causal agent of bacterial blast, was evaluated using three different methods of in vivo inoculation detached shoots inoculation in a growth chamber, and terminal shoot and blossom inoculation of potted trees in a net house in the period 2020–2022. The 20-week assessment of infection symptoms in the net house showed different dynamics of disease development depending on the inoculation method, the weather during the growing season and the susceptibility of the pear cultivars. Most of the cultivars were during the study low susceptible to pathogen and were classified in blossom, terminal as well as detached shoot susceptibility class 2. The European cultivar Kiefer was the least susceptible (susceptibility class 1) to blossom infection, the Asian cultivars Chojuro and Ya Li to terminal shoot infection, and Ya Li to detached shoot infection. The European cultivar William’s was the most susceptible to all types of infection, being classified in class 3, moderately susceptible cultivars to infection of terminal shoots, and class 4, highly susceptible cultivars to infection of blossoms and detached shoots. The assessment of susceptibility of pear cultivars to Pseudomonas syringae pv. syringae in the net house approximated conditions as close as possible to the condition in orchards and should thus be consistent in plantings with similar environmental and weather conditions. |
