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Results 601 to 630 of 2542:

Magnesium deficiency or excess hinders tomato growth, potassium and calcium uptakeOriginal Paper

Huixia Li, Fang Liu, Xueke Zhang, Jingbo Gao, Ping Chen

Plant Soil Environ., 2024, 70(11):719-730 | DOI: 10.17221/473/2023-PSE

Despite accumulating evidence for the adverse effects of magnesium (Mg) deficiency or excess on grain crops, how Mg imbalance affects plant growth and potassium (K) and calcium (Ca) nutrition in vegetable crops is still unclear. The aim of this study was to ascertain the response of plant growth, nutrient uptake and Mg-K-Ca interactions in tomato (Solanum lycopersicum L.) to various levels of Mg supply. The growth parameters and nutrient contents of hydroponic plants were measured under the Mg levels of 0, 0.5, 1.0, 1.5 and 3.0 mmol/L Mg2+ from seedling to fruit ripening stage. Results showed that both Mg deficiency (0 mmol/L Mg2+) and excess (3.0 mmol/L Mg2+) negatively affected shoot and root growth, leading to a noticeable decrease in total plant biomass across different stages (41.2–52.8% and 17.7–38.3%, respectively). Mg imbalance additionally altered leaf morphology and disrupted chloroplast structure. As a consequence of increased Mg levels, the Mg contents in various plant organs increased, whereas the Ca contents decreased substantially. The trend of K contents under different Mg levels was dependent on the plant growth stage. Although Mg levels did not prominently affect plant K contents during the early growth stage, they were significantly negatively correlated in the leaves and positively correlated in the fruit during the late growth stage. When translocated from roots to aboveground organs, Mg and Ca were mainly distributed in the leaves, with K preferentially distributed in the fruit. The findings of this study underscore that the symptoms of Mg imbalance generally develop from middle leaves in vegetable crops, exemplified by tomato, which is different from the pattern in common grain crops. Vegetable production necessitates nutrient supply for the middle and upper parts of Mg-deficient plants, and attention should be paid to the nutritional imbalance of Ca and K in plants under excessive Mg supply.

Prebiotic and antioxidant effects of the extracts from fruits and flowers of Cereus hildmannianusOriginal Paper

Everton da Silva Santos, Gabriela Krausová, Ivana Hyr¹lová, Maria de Fátima Pires da Silva Machado, Arildo José Braz de Oliveira, Gizem Özlük, Regina Aparecida Correia Gonçalves

Czech J. Food Sci., 2024, 42(6):415-422 | DOI: 10.17221/128/2024-CJFS


Cereus hildmannianus is a species with various nutritional and medicinal properties; however, the fruits and flowers have scarcely been explored. In this regard, the study investigated the bioproduction of total sugar content (TSC), total phenolic content (TPC), and total flavonoid content (TFC), antioxidant [DPPH – 2,2-diphenyl-1-picrylhydrazyl and ABTS – 2,2'-azino-bis-(-3-ethylbenzothiazoline-6-sulfonic acid)], iron chelation, and prebiotic activities of methanolic extracts from fruits (epicarps – EE, mesocarps – ME) and flowers (sepals – SE, petals – PE) of C. hildmannianus. The chemical profiles of the extracts were determined by ultra-high-performance liquid chromatography coupled with mass spectrometry. The highest accumulations of TSC were observed in the ME (64%), while the SE also had a high TFC (17 µg QE per mg DW; QE – quercetin equivalents, DW – dry weight) and the EE had a high TPC (646 µg GAE per mg DW; GAE – gallic acid equivalents). A total of 24 compounds (phenolic and organic acids; and glycosylated flavonoids) were putatively identified. The greatest antioxidant activities were obtained with the PE (DPPH: 199 µmol Trolox per mg DW; and ABTS: 59 µmol Trolox per mg DW), while the highest prebiotic effect was obtained with ME and EE regarding both fermentability and production of lactic and acetic acids by multiple species of Lactobacillus and Bifidobacterium. These promising results of bioactive compounds in the fruits and flowers of C. hildmannianus have potential applications for food and pharmaceutical purposes.

Does farm ownership structure matter? Distribution of CAP subsidies between primary and final beneficiaries in SlovakiaOriginal Paper

Jan Pokrivcak, Marian Toth, Pavel Ciaian, Mario Juliny

Agric. Econ. - Czech, 2025, 71(2):71-85 | DOI: 10.17221/186/2024-AGRICECON

This paper analyses the distribution of CAP subsidies between primary beneficiaries (farms) and final beneficiaries (farm owners) in Slovakia in 2021, using unique micro-level data. The results show a significant inequality in the distribution of CAP subsidies between primary and final beneficiaries in Slovakia. The majority of CAP payments (92% for primary beneficiaries and 89% for final beneficiaries) are concentrated among the top 20% of beneficiaries, with a higher concentration among primary beneficiaries than final beneficiaries. However, there is a reversal at the top stratum of beneficiaries. The top 1% of primary beneficiaries receive 26.2% of CAP subsidies, compared to 31.0% for final beneficiaries. For the remaining 99% of beneficiaries, the distribution of CAP subsidies is more concentrated at the level of primary beneficiaries than at the level of final beneficiaries. The analyses suggest that the implementation of the CAP in Slovakia has not been sufficient to address the unequal distribution of CAP subsidies.

Towards interpretability: Assessment of residual networks for tomato leaf disease classificationOriginal Paper

Raphael Berdin, Rob Christian Caduyac

Res. Agr. Eng., 2025, 71(1):1-9 | DOI: 10.17221/67/2024-RAE


The tomato occupies a prominent place in the Philippines’ agricultural economy. However, tomato leaf diseases are challenges in tomato crop production leading to economic losses. Among the tomato leaf diseases, early blight and Septoria leaf spot are prevalent in the Philippines due to the climate. Thus, the accurate identification of diseases affecting tomato leaves is essential. Currently, a visual inspection is the primary method for diagnosing tomato leaf diseases which is time-consuming and inefficient. This study aims to develop a quantized Residual Network with convolutional 50 layer (ResNet-50) based model to classify tomato leaves as healthy or affected by Septoria leaf spot or early blight. Furthermore, to enhance the reliability of the models’ classification, gradient-weighted class activation mapping (Grad-CAM) was implemented. In contrast with the visual inspection, a programmed system does not get tired and can provide consistent performance results. As a result, the original 32-bit floating point model attained an accuracy rate of 91.22%. The quantized 16-bit floating point model demonstrated comparable performance with 90.10% accuracy with a 50% reduction in the model size and inference time of 0.3942 seconds. The minimal accuracy loss of the 16-bit model relative to the 32-bit model is due to the post-training quantization. The reduction to 16-bit precision is significant for the future deployment of edge devices where resources are limited.

Brinjal shoot and fruit borer (Leucinodes orbonalis Guenee) seasonal activity and association with abiotic factorOriginal Paper

Prince Mahore, Nikki Bhardwaj, Pradyumn Singh, Mitesh Makwana, Dheerendra Mahor, Naveen, Neeraj Kumar, Sitaram Seervi, Sonu Sharma

Plant Protect. Sci., 2025, 61(2):183-190 | DOI: 10.17221/3/2024-PPS

The study has been conducted at Research Farm, College of Agriculture, Gwalior (M.P.), in the summers of 2021 and 2022. In the summers of 2021 and 2022, the crop was first infested by the shoot and fruit borer on the 10th and 13th standard meteorological week (SMW). The infestation persisted until the 23rd and 24th SMW, respectively. During the first year, the 15th SMW had the highest infestation rate for shoot damage, 15.76%, while the 18th SMW had the highest infestation rate for shoot damage, 15.07%, in the second year. Whereas fruit damage per cent is calculated based on number and weight, and its peak per cent infestation was noted on the 22nd SMW with 31.67% based on number, 30.12% based on weight during the first year, and 30.34% based on number and 29.95% based on weight during the second year, which was noted on the 23rd SMW. There was a significant positive correlation between maximum temperature and shoot damage percentage (r = 0.62) and minimum temperature and fruit damage percentage based on number (r = 0.87) and weight (r = 0.88) during the first year of study. However, during the first year of the study, there was a negative association (r = –0.68) between morning relative humidity and shoot damage per cent. The following year's research revealed a highly significant positive link between maximum temperature, minimum temperature, and evaporation with fruit damage (%) based on the number (r = 0.64, 0.92, and 0.82) and based on weight (r = 0.63, 0.92, and 0.82), respectively.

Technological and nutritional aspects of fresh purslane (Portulaca oleracea L.) in ice cream productionOriginal Paper

Engin Gündoğdu, Fatma Hezer

Czech J. Food Sci., 2025, 43(2):129-139 | DOI: 10.17221/93/2024-CJFS


Purslane (Portulaca oleracea L.) is rich in ω-3 fatty acids, antioxidants, and minerals, and has notable neuroprotective, anti-inflammatory, antimicrobial, antidiabetic, antioxidant, anticancer, and antihypertensive properties. This research evaluated the effect of fresh purslane (FP) on the physicochemical and nutritional properties of ice cream, including α-linolenic acid (ALA; 18 : 3; ω-3), mineral content, and antioxidant properties, along with sensory characteristics. FP was added at 0, 5, 10, and 15% (w/w) levels. The addition of FP significantly increased the iron (Fe), calcium (Ca), copper (Cu), sodium (Na), oleic acid (OA), and ALA contents (P < 0.05). FP also increased the first dripping and complete melting times, while decreasing overrun and viscosity. Total antioxidant capacity (TAC) remained unchanged (> 0.05), but total phenolic content (TPC) and 2,2-diphenyl-1-picryl-hydrazyl (DPPH) radical scavenging activity significantly increased (P < 0.01). Thirty-one volatile compounds were identified, with increases in octadecane, dodecane, and 2-hexenal concentrations due to FP addition. Although the addition of FP improved the ALA content and antioxidant properties, sensory results showed that FP over 5% (w/w) lowered taste and general acceptability scores. Thus, using 5% of FP in ice cream is optimal for enhancing nutritional properties.

Portable analogue-based electronic moisture meter for root-crop chipsShort Communication

James Roy Lesidan, Mencius Lesidan, Melvin Hagonob, Charlie Andan, Ma. Grace Sumaria, Ronaldo Almencion, Kebin Ysrael Martinez

Res. Agr. Eng., 2025, 71(2):113-120 | DOI: 10.17221/15/2025-RAE


Moisture content regulation of root crops is crucial in post-harvest processing operations, not only in the price stipulation but also to avoid aflatoxin contamination. To prolong their storage life, they are processed into dried chips to extend their usability in feed formulations and starches. In this study, we use the capacitance-based method to evaluate the performance of an analogue-based electronic meter for the cassava, sweet potato, and taro chips. The meter was calibrated against the oven-drying method, yielding high R2 values of the different root crops. The established calibration models were validated and revealed high R2 values with 0.9580 for the cassava, 0.9958 for the sweet potato, and 0.9798 for the taro. The trendline equations are y = 59.44x0.56, y = 54.38x0.47, and y = 52.94x0.62, respectively. The results revealed that the moisture meter is capable of reading the moisture content on a weight basis (% MCwb) with accuracy and reliability at specified limits of 8% < x < 69% for the cassava, 15% < x < 59% for the sweet potato, and 9% < x < 57% for the taro. This study presents the performance of a portable analogue-based moisture meter as a reliable and accessible solution to small-scale operations, especially for farmers, offering an on-site rapid moisture content measurement in root crop processing.

Comparison of the cadmium and lead removal from three soils by electrokinetic remediationOriginal Paper

Mei Zhang, Chengdong Duan, Xinfu Wang

Soil & Water Res., 2025, 20(3):195-205 | DOI: 10.17221/140/2024-SWR

This study investigated, for the first time, the efficacy of citric acid (CA) and ethylenediaminetetraacetic acid (EDTA) as electrolytes in electrokinetic remediation (EKR) for removing lead (Pb) and cadmium (Cd) from three distinct soils (Anthrosols soil, AT; Acrisols soil, AC; and Chernozems soil, CH). Under a voltage gradient of 2 V/cm and a remediation duration of 4 days, EDTA proved most effective for Anthrosols, achieving removal rates of 17.8% for Cd and 12.8% for Pb-lower than those observed for Acrisols and Chernozems, likely due to AT’s high pH background. These results suggest that combining EKR with other remediation techniques could enhance efficiency for such soils. For Acrisols soil, extending the remediation time to 10 days significantly improved metal removal: Cd removal reached 91.1% with CA, while Pb removal attained 62.7% with EDTA. Chernozems soil exhibited higher sensitivity to EKR, with pronounced focusing phenomena. In CH1, Cd removal in anode-proximal (S1) zone reached 99%, but accumulation in the cathode-adjacent (S4 and S5) reduced the average removal rate to 22%, indicating the potential for improvement through cathodic control. Similarly, in CH2, Pb removal in S5 achieved 84.8%, while focusing in S1 suggested the need for anodic optimisation. These findings highlight the influence of soil properties and operational parameters on EKR efficiency, providing insights for tailored remediation strategies.

Efficiency of agricultural and pastoral systems in China considering shared factors and undesirable outputsOriginal Paper

Chunhua Chen, Chongyu Ma

Agric. Econ. - Czech, 2025, 71(8):445-457 | DOI: 10.17221/411/2024-AGRICECON

Assessing and optimising the efficiency of agricultural and pastoral systems is crucial for the long-term development of a country. The presence of shared factors and undesirable outputs increases the complexity of evaluating the efficiency of these systems. To address this issue, we first analysed the production possibility sets of the agricultural subsystems, pastoral subsystems, and agricultural and pastoral systems. Then, two bounded adjusted measure (BAM) models considering shared factors and undesirable outputs were proposed to evaluate the divisional efficiency of agricultural and pastoral subsystems. Additionally, a network BAM model in the presence of shared factors and undesirable outputs was developed to assess overall efficiency. Undesirable outputs were handled by slack-based measures in the three novel models. The proposed models were used to evaluate the efficiency of agricultural and pastoral systems across 30 provinces and cities in China. To explore the impact of undesirable outputs, the efficiency of ignoring undesirable outputs was investigated and compared with that obtained from the new method. These results suggest that ignoring undesirable outputs may misestimate efficiency to a certain extent.

Rural e-commerce and agricultural total factor productivity: Evidence from ChinaOriginal Paper

Jialong Zheng, Xintong Liang, Junkai Ma, Guangsi Li

Agric. Econ. - Czech, 2025, 71(10):550-563 | DOI: 10.17221/289/2024-AGRICECON

Employing the Comprehensive Demonstration of E-commerce in Rural Areas (CDERA) policy as a quasi-natural experiment, this paper explores the impact of rural e-commerce development on agricultural total factor productivity (ATFP) and its underlying mechanisms, using a difference-in-differences model. The analysis utilises panel data from 1 495 counties in China from 2001 to 2021. The findings indicate that the CDERA policy implementation enhanced ATFP in treated counties by approximately 1.6 percentage points compared to control counties, other factors being equal. Mechanism analysis further reveals that the CDERA policy enhances ATFP by improving agricultural technological efficiency and fostering agricultural industrial development. This study highlights the significant role of CDERA policy in enhancing agricultural productivity in China and offers policy insights for advancing rural e-commerce and promoting sustainable agricultural development.

Geographical variations in soil properties and bacterial community diversity across major lavender (Lavandula angustifolia Mill.) cultivation regions in the Ili River ValleyOriginal Paper

Junnan Jian, Shimin Tang, Shengjun Zhang, Ling Zhu, Bian Ran, Xuechao Zhang, Weikang Luo, Shilei Dong

Plant Soil Environ., 2025, 71(11):805-819 | DOI: 10.17221/377/2025-PSE

The Ili region hosts China’s largest lavender cultivation base, yet soil bacterial diversity in its primary cultivation areas remains understudied. To address this, we compared soil bacterial communities across four major cultivation counties (Chabuchar, Agricultural Research Institute, Yining, and Huocheng). Essential oil profiles, soil properties, and bacterial community characteristics were analysed to elucidate microbial variations and environmental interactions. The results showed that: (1) The essential oil yield (1.14%) and linalool content (41.04%) in the Huocheng County cultivation area were significantly higher than those in other areas, and the essential oil quality was relatively the best; (2) the soil bacterial communities in different main cultivation areas shared certain commonalities. At the phylum level, Proteobacteria, Acidobacteriota, Gemmatimonadota, and Actinobacteriota were the dominant phyla, and their relative abundances varied by region and soil layer, and (3) the redundancy analysis results showed that soil bacterial communities were comprehensively affected by environmental factors such as pH, total nitrogen, total phosphorus, soil organic carbon, longitude, and altitude. The significant positive correlations between the abundance of Vicinamibacteraceae (Acidobacteriota) in Huocheng County soils and both soil total phosphorus and linalool content suggest a putative mechanism whereby this bacterial taxon enhances lavender terpenoid synthesis by facilitating phosphorus cycling. Overall, these results suggest that geographically driven climatic variations dynamically alter the soil bacterial community, thereby influencing lavender growth and the final essential oil quality.

Selection of trees for rubbing by the wild boar (Sus scrofa) in the Sidi Boughaba forested Moroccan Ramsar site: Assessment, implications, and perspectivesOriginal Paper

Abdellah Ichen, Saâd Hanane, Mohammed Bouaamama, Mohamed Alaoui, Najib Magri, Abdelaziz Benhoussa

J. For. Sci., 2023, 69(1):11-20 | DOI: 10.17221/139/2022-JFS


Knowledge of mechanisms by which large mammals select rubbing trees (RT) is a major challenge for the effective management of forests and wildlife resources. In this study, we investigated this issue regarding the Wild boar (Sus scrofa) in the Moroccan forested site of Sidi Boughaba as a case study. We used data from four sets of variables, namely topography, forest type, landscape composition, and microhabitat, measured at 58 rub and control trees, to determine the factors associated with the occurrence of RT by means of generalized linear mixed models. Our results showed that the RT occurrence increased with a high density of red juniper trees and declined with distance to the nearest footpath. Variation partitioning analysis revealed that the pure fraction of microhabitat was the most robust in explaining this occurrence (adj. R2 = 0.17, P < 0.001), followed by that of forest type (adj. R2 = 0.05, P < 0.05). A scientific monitoring system must be set up to strike a balance between the availability of forest trees on the one hand and the pressure exerted by wild boars on this internationally importance site on the other. It is imperative to test the geographical generality of our results in other Mediterranean forests.

Sole and combined foliar application of silicon and putrescine alleviates the negative effects of drought stress in maize by modulating the morpho-physiological and antioxidant defence mechanismsOriginal Paper

Hossam S. El-Beltagi, Khairiah Mubarak Alwutayd, Umair Rasheed, Abdul Sattar, Qasim Ali, Basmah M. Alharbi, Ghadah Hamad Al-Hawas, Zahid Khorshid Abbas, Doaa Bahaa Eldin Darwish, Samy F. Mahmoud, Manal Abdullah Al-Shaqhaa, Ahmed Abou El-Yazied (email: ahmed_abdelhaf

Plant Soil Environ., 2024, 70(1):26-39 | DOI: 10.17221/423/2023-PSE

Drought stress is one of the major threats to food security in the climate change scenario. Reducing the deleterious impacts of drought stress on the productivity of cereal crops is crucial. Hence, limited information has been available about the effect of the combined use of plant growth regulators and mineral fertilisers on promoting drought tolerance in maize seedlings. In this study, a pot experiment was carried out to evaluate the potential of sole or combined application of silicon (Si) and putrescine (Put) to mitigate the detrimental effects of drought on maize. The experimental treatments were, i.e. control (CK), water spray, 4.0 mmol Si, 0.5 mmol Put, and 4.0 mmol Si + 0.5 mmol Put on maize crop grown at two different water-holding capacity levels (80% well-water condition and 40% drought stress). The experiment was arranged in a complete randomised design with factorial arrangements having three replications. Exposure of maize plants to drought stress at the reproductive phase (VT-tasseling) reduced the photosynthetic pigments, including chlorophyll a, chlorophyll b and chlorophyll a + b, relative water contents, leaf area, yield and yield attributes. However, foliar application of Si and Put individually and Si + Put dramatically reduced these negative effects by improving photosynthetic pigments, relative water contents, and activities of enzymatic antioxidant defence. Drought stress-induced lipid peroxidation in the form of more production of malondialdehyde content, hydrogen peroxide and electrolyte leakage significantly declined due to the combined application of Si and Put compared to the respective control. Drought stress boosted the activities of key enzymatic antioxidants (catalase, superoxide dismutase, peroxidase, and ascorbate peroxidase) irrespective of the treatment application. Moreover, it was noted that the accumulation of osmolytes (proline and soluble protein) contents was increased by the combined application of Si and Put. Under drought stress conditions, combined foliar application of Si and Put considerably improved 22.70% cob length, 12.77% number of grains per cob, and 18.30% 100-grain weight, which ultimately enhanced maize’s 10.29% grain yield. From the current study’s findings, it was concluded that a combined foliar spray of silicon and putrescine at the reproductive phase is an effective strategy to enhance the maize yield in drought-prone areas.

Comparison of growth, structure and production in stands of naturally regenerated Betula pendula and Populus tremulaOriginal Paper

Antonín Martiník, Zdeòek Adamec, Matú¹ Sendecký, Jan Krejza

J. For. Sci., 2024, 70(2):64-78 | DOI: 10.17221/107/2023-JFS

In Central Europe, the most important pioneer species are silver birch and European aspen. Changes in disturbance regime and an economic interest for this species have led to studies on this species and stands. Two naturally regenerated dense stands of birch (Betula pendula Roth – silver birch monoculture) and aspen (Populus tremula L. – European aspen monoculture) were selected from a Querceto – Fagetum mesotrophicum site to observe responses under the same conditions in Central Europe. Both stands regenerated after the allochthonous Norway spruce stands dieback at the site in 1999. Within a 10 m × 25 m transect established in both stands, the diameter at breast height (DBH) of all the trees was measured between 2015 and 2020. In addition, the height and position were recorded for all trees, and sample trees of both species were felled for biomass measurement. A higher volume production of aspen at the beginning (107.48/96.80 m3) and at the end of the experiment (178.32/143.08 m3) was accompanied with a lower above-ground wood biomass (WAB). The WAB of birch increased from 81.9 t·ha–1 to 103.3 t·ha–1 and aspen allocated 79.5 t·ha–1 to 94.8 t·ha–1 of biomass. The current annual increment of biomass for these stands was 4.3 t·ha–1 and 3.1 t·ha–1 in the age range of 17 to 22 years. The culmination of the volume increment has not yet occurred in any of the stands, but the mean annual increment of wood biomass has already been reached for both stands. Furthermore, the aspen stand tended to be more dynamic in terms of biomass allocation and mortality. Also, the lower self-tolerance of aspen confirmed our hypothesis: the two native pioneer species differ in their social behaviour within monospecific stands.

The effect of various factors (light, temperature, salt, and drought) on germination of Bromus sterilis L.Original Paper

Kateøina Hamouzová, Jaromír ©uk, Soham Bhattacharya, Jakub Mikulka, Veronika Valièková, Michaela Koláøová, Josef Soukup

Plant 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.

Biopesticide formulation based on essential oils in Drosophila suzukii management as a future of pest controlOriginal Paper

Dragana Bo¹koviæ, Slavica Vukoviæ, Sanja Laziæ, Nuray Baser, Mihaela Kavran, Dragana Novakoviæ, Aleksandra ©u¹njar, Jelena Eæimoviæ

Plant Protect. Sci., 2024, 60(3):288-294 | DOI: 10.17221/11/2024-PPS

Drosophila suzukii poses a significant threat to berry fruits with its uncontrolled spread. Essential oils (EOs) have emerged as potential bioinsecticides due to their natural origin, mode of action, and biodegradability. Although EOs show potential for use in agriculture due to ecotoxicologically favourable characteristics, additional research is required to enhance their effectiveness, stability, and application for practical implementation in pest management. The primary objective of this research was the development of a bioinsecticide formulation based on a combination of three EOs – Pelargonium graveolens, Anethum graveolens, and Pinus sylvestris followed by the assessment of formulated bioinsecticide physicochemical properties. Using a two-choice bioassay, this study aimed to evaluate the effects of formulated bioinsecticides on D. suzukii, regarding their insecticidal properties through oviposition deterrence. The developed formulation exhibited favourable physicochemical properties and demonstrated a decrease in the number of larvae in fruits. Bioinsecticides present an environmentally friendly approach to pest control. However, further research and development are imperative to fully exploit their potential for effective crop protection in the field, followed by comprehensive research to evaluate the potential side effects on natural enemies, ensuring that their implementation doesn't harm beneficial organisms and maintain ecological equilibrium.

Innovative approach to utilising magnetic fields to enhance wheat yield: evidence from field studies in ChinaOriginal Paper

Yinglei Zhang, Hangyu Dou, Liuyang yang, Yihan Zhang, Wei Sun, Yihao Ruan, Jiameng Guo, Yongchao Wang, Ruixin Shao, Qinghua Yang, Hao Wang

Plant Soil Environ., 2024, 70(10):656-672 | DOI: 10.17221/285/2024-PSE

Magnetic fields, as a form of physical energy, exert an influence on biological activities. However, our current understanding of the impact of magnetic fields on wheat yield remains limited. In this study, our objective was to investigate the effects of magnetic field treatment of wheat plants on their yield, root growth, absorption of nitrogen and phosphorus and soil bacterial diversity. The experiments were conducted at two agricultural research stations in China, Zhengzhou and Xuchang. Plants were treated with magnetic fields of 20, 40, 60, and 80 mT induced by permanent magnets for chronic exposure. Untreated plants were considered as controls. Our result showed that soil nutrients were found to have a substantial impact on wheat nitrogen and phosphorus absorption, and wheat nitrogen and phosphorus absorption significantly affected wheat yield. The change in soil nutrient content was caused by the change in soil bacterial community diversity and abundance, and increased soil nutrients increased wheat yield. The results suggest that magnetic field treatment stimulated wheat plant growth and yield, and changed soil nutrient content through improved soil bacterial community diversity and increased soil nitrogen and phosphorous absorption.

Does a relation between bone histomorphometry and fractures exist? The case of the equine radius and tibiaOriginal Paper

M Zedda, R Babosova, S Gadau, G Lepore, S Succu, V Farina

Vet Med - Czech, 2024, 69(9):307-313 | DOI: 10.17221/18/2024-VETMED

Fractures of long bones in limbs are rare traumatic events in horses. This study investigates whether the incidence and types of fractures can be related to the histomorphometric features of the radius and tibia, which experience different biomechanical stresses and exhibit varying incidences and types of fractures. Clinical observations suggest that, in adults, slightly transverse and comminuted fractures are present in the radius, while the tibia shows a higher frequency of longitudinal and spiral fractures. Microscopic observations reveal no apparent distinctive characteristics between the radius and tibia, whereas the histomorphometric data highlight differences in the osteon density, eccentricity, and diameters of the osteons and Haversian canals. To sum up, tibial osteons are more numerous and smaller than those in the radius, resulting in a 15% higher total extension of the cement line in the tibia compared to the radius. These histomorphometric differences are an evolutionary adaptation to the different biomechanical stresses that involve the thoracic and pelvic limbs. Our results could help better understand numerous clinical realities detectable through retrospective analyses and aid in evaluating a specific bone’s predisposition towards traumatic events in all mammals, including humans.

Evaluation of chemical compounds as repellents of the brown marmorated stink bug (Halyomorpha halys [Stål])Original Paper

Ziga Laznik, Matej Podgornik Milosavljeviæ, Stanislav Trdan

Plant Protect. Sci., 2024, 60(4):371-379 | DOI: 10.17221/87/2024-PPS

The brown marmorated stink bug [Halyomorpha halys (Stål)] is an invasive pest species. This polyphagous insect, native to Eastern Asia, threatens various cultivated plant species. Control methods often rely on chemical insecticides, but the decreasing use of such agents has prompted a shift towards preventive measures. As a defence mechanism, natural compounds released by plants have gained attention for their potential deterrent or attractant properties. In this study, we evaluated the response of the brown marmorated stink bug to selected chemical substances, including citronellal, hexanal, nonanol, β-caryophyllene, linalool, ocimene, nerolidol, terpinolen, α-humulene, dimethyl sulfide, aggregation pheromone, and ethanol. The experiment was conducted using an olfactometer. Two experiments were performed, comparing the substances against dimethyl sulfoxide and then refining the selection based on initial results; in the first series, nerolidol, ocimene, and terpinolene exhibited promising results as complete deterrents. The second series confirmed nerolidol as the most effective deterrent among all tested substances. These findings contribute to developing preventive strategies for managing the brown marmorated stink bug and reducing reliance on chemical insecticides.

Analysis of the quality of curds from Slovakia and neighbouring countriesOriginal Paper

Jana Záhumenská, Franti¹ek Zigo, Tomá¹ Mihok, Mariana Kováèová, Zuzana Farka¹ová, Jana Výrostková, Zuzana Lacková, Mária Vargová

Czech J. Food Sci., 2024, 42(5):317-329 | DOI: 10.17221/51/2024-CJFS

The work deals with the evaluation of the quality of curds produced in Slovakia and neighbouring countries (Czech Republic, Poland, Hungary, Ukraine) at the time of their purchase and at the time of the end of the warranty period. Significant differences in consistency (P < 0.05) were found between the model samples of cottage cheese after sensory evaluation. Differences in total porosity were noted between curds examined on the first and last day, storage reduced porosity and changed (reduced) grain size. There was a significant difference in colour between the samples (A1–E5) (P < 0.05). Colourimetric measurement confirmed the lightest colour in sample E4 (L* = 92.87, L* – lightness) from Ukraine, which showed the lowest fat content, and the darkest sample was sample C3 from Poland (L* = 88.62). The minimum value of dry matter content was found in sample E4 (15.79 ± 2.59%) and the maximum value in sample C3 (35.82 ± 2.59%). Towards the end of the use-by date, the dry matter values slightly decreased. Statistical significance was demonstrated between the first day of purchase and the expiration date in dry matter content (P < 0.05) and between fat content in dry matter (< 0.05). The titration acidity was exceeded in two cases, in sample B2 (first day – FD 172 °SH / last day – LD 192 °SH) and B4 (FD 162 °SH / LD 167 °SH). During the guarantee period, the growth of micromycetes in curds was statistically significant (P < 0.05).

The influence of bioproducts on mycorrhizal occurrence in the vegetable rootsOriginal Paper

Edyta Derkowska, Lidia Sas-Paszt, Beata Sumorok, Krzysztof Górnik, S³awomir G³uszek, Waldemar Treder

Hort. Sci. (Prague), 2024, 51(4):327-340 | DOI: 10.17221/69/2023-HORTSCI

The aim of the study was to assess the impact of the use of biofertilizers on the degree of colonization of cucumber and tomato plant roots by arbuscular mycorrhizal fungi and the number of AMF spores in the rhizosphere soil. Two experiments were carried out in containers on cucumber and tomato plants under field conditions. The plants were fertilized with standard NPK fertilizer, mineral fertilizers: POLIFOSKA 6, Super FOS DAR 40 and urea in the full recommended dose and reduced by 40%, microbiologically enriched, and only with strains of beneficial microorganisms (Bacillus spp., Bacillus amyloliquefaciens, Paenibacillus Polymyxa, Aspergillus niger, Purpureocillium lilacinum). The experimental results showed a beneficial effect of the POLIFOSKA 6 mineral fertilizer enriched with beneficial bacteria of the Bacillus genus on increasing the colonization of the roots of tomato and cucumber plants by arbuscular mycorrhizal fungi. Compared to the control, fertilization with microbiologically enriched urea at doses of 100% and 60% reduced the frequency of mycorrhizas in the roots of tomato and cucumber plants. The use of POLIFOSKA 6 100% and Super FOS DAR 40 at a dose of 60% resulted in an increase in the number of spores in the rhizosphere soil. The experimental results will allow the development of new biofertilizers as alternative methods of fertilizing plants and improving soil quality compared to standard mineral fertilization.

The insertion of an ancestral gene in Nicotiana tabacum plants reduces free radicals during saline irrigationOriginal Paper

Claudia Marissa Calderón Torres, Victoria Abril Mancilla Galván, Miguel Murguía Romero

Czech J. Genet. Plant Breed., 2025, 61(1):43-49 | DOI: 10.17221/107/2024-CJGPB

Transgenic organisms modified with ancestral genes for nitrogen metabolism are rare. Previously, it was reported that genetically modified Nicotiana tabacum with the ARO4 gene of aromatic amino acid synthesis from the yeast Debaryomyces hansenii increases its growth during moderate salt stress. In this investigation, it was explored if the changes in the expression of the gene DhARO4 in Nicotiana tabacum, during saline irrigation, are related to the chlorophyll content and the total reactive oxygen species production. Seedlings of transgenic and wild type Nicotiana tabacum germinated in standard conditions were divided into two irrigation groups, with 100 mM of NaCl and with tap water; and, after 50 days, in the non-senescent adult leaves of the plants, the total chlorophyll a and b and the total chlorophyll content were determined by spectrophotometry and the reactive oxygen species production (•OH, 1O2, H2O2) was quantified by a 2',7'-dichlorodihydrofluorescein assay. The expression of the DhARO4 gene was verified with a salt shock of 100 mM of NaCl for 24 hours in the transgenic and wild type plants in the tap water irrigation group. The DhARO4 gene transcript increased (P < 0.05) in the transgenic plant; meanwhile, the average concentration of chlorophyll a increased (P < 0.05), and the average production of reactive oxygen species decreased (P < 0.05).

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.

The impact of organic selenium on the growth and physiological traits of Salvia miltiorrhiza Bunge. seedlingsOriginal Paper

Yi Luo, Xiaoqing Zhang, Yibo Zhang, Changjuan Shan

Plant Soil Environ., 2025, 71(4):269-277 | DOI: 10.17221/348/2024-PSE

This study examined the impact of selenomethionine (SeMet) on the growth and physiological traits of Salvia miltiorrhiza seedlings. Application of SeMet significantly improved the photosynthetic performance by reducing stomatal limitation value (Ls) and increasing soil and plant analyser development (SPAD) value, net photosynthetic rate (Pn), transpiration rate (Tr), stomatal conductance (gs) and water use efficiency (WUE), compared to the control. Furthermore, SeMet also improved the photosynthetic performance by reducing non-photochemical quenching (NPQ) and increasing the actual photochemical efficiency of photosystem II (Y(II)), photochemical quenching (qP), maximum photochemical efficiency of PSII (Fv/Fm) and apparent electron transport rate (ETR). Meanwhile, the findings indicated that SeMet was able to enhance the antioxidant capacity of S. miltiorrhiza seedlings by increasing the activities of antioxidant enzymes ascorbate peroxidase (APX), glutathione reductase (GR), peroxidase (POD), catalase (CAT) and superoxide dismutase (SOD), thereby reducing the contents of malondialdehyde (MDA) and hydrogen peroxide (H2O2). Besides, SeMet notably impacted plant growth by promoting plant height, basal diameter and biomass. Among different concentrations, 60 mg/L exhibited the most favourable impact on photosynthetic performance, antioxidant capacity and the growth of S. miltiorrhiza seedlings. In summary, the appropriate dosage of SeMet can stimulate the growth of S. miltiorrhiza by enhancing photosynthetic and antioxidant capacities. These findings can serve as a solid theoretical foundation for the application of SeMet in the cultivation and production of S. miltiorrhiza.

Forest certification management experience in Asia Pacific and Europe: A case study of Malaysia and SwedenOriginal Paper

Shah Badri Mohd Nor, Ahmad Fariz Mohamed, Shamsul Khamis

J. For. Sci., 2025, 71(6):269-285 | DOI: 10.17221/3/2025-JFS

The forest certification is a voluntary programme to ensure that the timber harvested from forests is processed in a sustainable manner by following specific standards. The Programme for the Endorsement of Forest Certification (PEFC) was introduced in 1999 using the bottom-up approach, and it gives flexibility for a country to set up their own PEFC standard based on current practices in sustainable forest management (SFM), regulation, and governance. This practice has led to the development of various PEFC standards for each country; thus, the impact of PEFC certification differs from country to country. In accordance with that, this study aimed to evaluate the PEFC standard application in developed and developing countries, namely in Sweden and Malaysia. The study also analysed the impact of forest certification on governance and economic aspects within Asia Pacific and Europe. The outcome of this study indicates that the PEFC standards developed by these countries showed similarities; for example, both countries are focusing on social and environmental requirements. Meanwhile, the differences were shown in the criteria, terms used, and the focus area. The impact analysis exhibited that countries are facing similar issues, especially market access and premium prices. This study revealed that each country develops different standards based on current practices, forest diversification, and regulations.

MaPep1 and MbPep1, as plant elicitor peptides in banana, confer resistance to banana blood disease caused by Ralstonia syzygii subsp. celebesensisOriginal Paper

Praphat Kawicha, Ladawan Rattanapolsan, Ratri Boonruangrod, Yube Yamaguchi, Kusavadee Sangdee, Aphidech Sangdee, Thanwanit Thanyasiriwat

Plant Protect. Sci., 2025, 61(3):262-277 | DOI: 10.17221/179/2024-PPS

Peptides play regulatory roles in various plant development and defence processes. They function as molecular messengers that detect threats and trigger defence responses. This study aimed to identify the genes encoding endogenous plant elicitor peptide precursors (PROPEPs) in bananas and their role in inducing resistance to Ralstonia syzygii subsp. celebesensis (Rsc). Two precursor genes, MaPROPEP1 and MbPROPEP1, were discovered and predicted to encode the precursor proteins of elicitor peptides, namely, MaPep1 and MbPep1. Both elicitor peptides contained 23 amino acids of the active elicitor peptide, which activated innate immune responses in banana resistance to Rsc. The disease assessment was conducted by inoculating banana plants with Rsc isolate MY4101 using the root-stabbing method. The results demonstrated that MaPep1 and MbPep1 pretreatment enhanced resistance to banana blood disease, as indicated by reduced disease severity and the absence of wilting for 7 days after infection. The expression of the MaPROPEP1, MbPROPEP1, MaLOX7, and Pr-10 genes was evaluated using qPCR and found to be upregulated by MaPep1 and MbPep1 injection followed by Rsc infection in aboveground banana tissues within 7 days. These findings prove that MaPep1 and MbPep1 are members of the Pep family and exhibit conserved functions across various plant species. This approach may be used to develop strategies for enhancing disease resistance in banana cultivation.

Effect of dehulled lupin seed meal in feed mixture on muscle fat quality of Cherry Valley ducksOriginal Paper

Eva Straková, Lucie V¹etièková, Pavel Suchý, Martin Kutlva¹r

Czech J. Anim. Sci., 2025, 70(7):276-285 | DOI: 10.17221/76/2025-CJAS


The experiment was done on 180 (2 × 90) Cherry Valley ducks that were fattened until 42 days of age with parity of females and males in the group. The aim of the study was to examine the effect of substituting dehulled lupin seed meal, Zulika variety, for soybean meal and its impact on the fatty acid content of breast and thigh muscle fat. Feeding lupin diets resulted in a significant (P ≤ 0.05) increase in monounsaturated fatty acids (MUFA) in Cherry Valley ducks, as well as significant (P ≤ 0.05) increase in polyunsaturated fatty acids n-3 (PUFA n-3) in breast and thigh muscle fat. There was no effect of the tested diets on PUFA n-6 content in muscle fat. The results confirm that lupin meal in the diet enhances the dietary value of Cherry Valley duck muscle due to the higher proportion of unsaturated fatty acids, with respect to the use of duck meat for human consumption.

Synbiotic yoghurt with Lactiplantibacillus plantarum and plant powder substratesOriginal Paper

Kristina Veselá, Milada Plocková, Eva Musilová, Blanka Vrchotová, ©árka Horáèková

Czech J. Food Sci., 2025, 43(5):358-364 | DOI: 10.17221/93/2025-CJFS

Enrichment of yoghurt with probiotic bacterial strains and prebiotic plant substrates has gained increasing interest among both consumers and food manufacturers. In this study, limited growth and fermentation activity of the commercial probiotic strain Lactiplantibacillus plantarum 299v were observed when cultured in ultra-high temperature (UHT) milk. Electron microscopy revealed the strain's ability to adhere to the surface of prebiotically active plant particles, specifically quinoa, lucuma, and baobab powders. Supplementation of these plant substrates at a concentration of 1% (w/v) slightly enhanced the growth of L. plantarum 299v in UHT milk and improved its viability over a 28-day storage period at 5 ± 1 °C. Co-cultivation of L. plantarum 299v with the yoghurt starter culture YC-381 (in a 1 : 0.5 ratio), along with the addition of 1% (w/v) of lucuma, quinoa, or baobab powders to UHT milk, was successfully achieved. These substrates positively influenced the stability of L. plantarum 299v during the 28-day storage and in the case of quinoa of Lactobacillus delbrueckii subsp. bulgaricus during 21-day storage at 5 ± 1 °C. Moreover, the addition of 1% (w/v) plant powders slightly stimulated the production of lactic and acetic acids in yoghurt containing L. plantarum 299v.

Combined application of biochar and phosphorus influenced maize production and soil properties in the Yellow River Delta: a comparison between contrasting weather conditionsOriginal Paper

Xiaoqi Tang, Chunming Jiang, Hongjie Li, Jing Tian, Dawei Li, Xuan Zhang, Xiuli Ge, Xia Liu, Wenjun Gao, Guoli Liu, Wenjuan Li

Plant Soil Environ., 2025, 71(8):581-594 | DOI: 10.17221/268/2025-PSE

The Yellow River Delta, an important area of reserved arable land resources in China, is faced with the problem of crop productivity being typically limited by low soil quality. Developing techniques that raised crop yield without environmental damage was critically needed. To date, the knowledge about the joint impacts of biochar (C) and phosphorus (P) addition on soil properties and maize production under different weather conditions in this area is seriously lacking. Consequently, a full factorial field experiment including three biochar intensities (0 (C0), 5 000 (C1), and 10 000 (C2) kg/ha), three phosphorus fertilisation levels (0 (P0), 60 (P1), and 120 (P2) kg P/ha), and their combinations was conducted in Binzhou, Shandong province of China from 2021 to 2022. Compared to 2022, the maize yield was dramatically reduced in 2021 (with a 35% mean decrease) due to excessive rainfall in the maize reproductive growth stage (P < 0.01). C addition caused greater proportions and contributions of dry matter and nutrient remobilisation from pre-anthesis vegetation organs to grain. Subsequently, maize yield was much more promoted in 2021 (23%) than in 2022 (5%) by adding C, in which the discrepancies between C1 and C2 were relatively small and insignificant. On the other hand, these corresponding effects of P and C × P were relatively modest. From the soil perspective, soil physical (hydraulic conductivity (Ks) and bulk density) and chemical properties (soil organic carbon, total N, and soil available N) were significantly improved by C addition (P < 0.01). More importantly, we detected negative interactions of C × P on soil available P and phosphorus activation coefficient (P < 0.01), as soil available P was lowered with more input of C and P together (particularly under P2 series). The two-year outcomes suggested that C addition could enhance maize growth and ensure crop yield stability. Still, the combined incorporation of this kind of C and P (especially for C2P2) was not recommended in the saline-alkali land. The present study delivered useful insight into the rational utilisation of C and P fertilisers in the Yellow River Delta.

Assessing stem rust tolerance in commercial wheat varieties: Insights from field trials in KazakhstanOriginal Paper

Akerke Maulenbay, Aralbek Rsaliyev

Plant Protect. Sci., 2025, 61(4):333-349 | DOI: 10.17221/219/2024-PPS


This study provides the first comprehensive assessment of stem rust tolerance in commercial wheat varieties from Kazakhstan and Russia, including spring and winter varieties. Field trials were conducted to compare yield and agronomic traits between stem rust-inoculated and fungicide-treated plots, providing a practical framework for assessing tolerance. Key indicators such as disease severity, area under the disease progress curve, thousand kernel weight, and the stress tolerance index were evaluated to gauge variety resilience under stress. Significant variations in tolerance were observed, with varieties such as 'Pamyat' 47', 'Nadezhda', 'Lyubava 5', 'Tselinnaya 3s', 'Severyanka', 'Egemen-20', 'Zhemchuzhina Povolzh'ya', 'Dimash', 'Serke' and 'Korona' maintaining yield potential despite high disease pressure. Correlations revealed that traits such as flag leaf area, vegetative period, and plant height were associated with greater tolerance, highlighting their potential in breeding. With the expected increase in stem rust outbreaks due to climate change and the evolving virulence of stem rust pathogens, these findings emphasise the need for breeding programs incorporating resistance and tolerance, offering a sustainable alternative to fungicide use. This study provides critical insights for breeders and plant pathologists seeking to enhance wheat resilience in regions prone to rust epidemics.

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