Agricultural Usage Research Articles

Antiphytopathogenic Diphenyl Ethers from the Marine-derived Fungus Aspergillus sydowii

Background: Natural products from the marine-derived Aspergillus sp. have great potential in agricultural usage due to their broad biological activities. Objective: This study was designed to investigate the antiphytopathogenic compounds from marinederived fungus Aspergillus sydowii LW09. Methods: The compounds were isolated and purified by chromatography methods, and their structures were elucidated by analysis of the NMR and MS spectroscopic data as well as comparison with those of literature. All compounds were evaluated for antibacterial activities against phytopathogenic bacteria Pseudomonas syringae and Ralstonia solanacarum, along with spore germination inhibition of phytopathogenic fungi Fusarium oxysporum and Alternaria alternata. Results: Two diphenyl ethers violaceols I (1) and II (2), along with two alkaloids acremolin (3) and WIN 64821 (4) were isolated from the fermentation extracts of A. sydowii LW09. Compound 1 showed significant antibacterial activity against P. syringae and R. solanacarum with the same MIC values of 4 μg/mL, while compound 2 showed obvious antibacterial activity against P. syringae and R. solanacarum with MIC values of 2 and 1 μg/mL, respectively. Moreover, both 1 and 2 could inhibit the spore germination of F. oxysporum in the concentration range of 64–128 μg/mL. In addition, violaceol I (1) also inhibited the spore germination of A. alternata at 128 μg/mL. Conclusion: This study provided the potential antiphytopathogenic drug candidate for further studies.

Optimizing Agricultural and Construction Tool Usage through Android Devices A Comprehensive Survey

An all-encompassing rental and booking platform for agricultural tools and construction tools designed to revolutionize the workflow in the agricultural sector and construction sector respectively. It is a versatile tool of central application that will bridge the gap between demand of tools and its supply. This will help the owners to effectively run their farm-lands. Providers will keep inventory for the tools and implementation of tool allotment. When customers don’t find the tools that they need in the current inventory they may purchase those from hardware shops. In that situation, the customers can buy tools from the selected hardware shops connected with the site by direct integration with the site owner’s shop. Real-time online tool availability checks and vendor invoice generation are required in this process when clients want to buy. A flexible communication system that can be developed as an application to facilitate customer communication directly with suppliers, which will be considerably more convenient than the conventional approaches and will remove the above.

Assessing agricultural practices and insecticides resistance for effective malaria vector control in northwestern Iran

BackgroundAfter three years with no local transmission of malaria, an outbreak occurred in Iran in 2022. Key malaria control methods in Iran are including indoor residual spraying (IRS), long-lasting insecticide-treated nets (LLINs), and prompt diagnosis and treatment of malaria cases. Anopheles sacharovi is one of the main malaria vectors in Iran. This study aimed to determine the insecticides resistance status of An. sacharovi in northwestern Iran, to inform effective vector control programs in this region.MethodsLarval stages of An. sacharovi were collected from various larval habitats located in the villages along the Aras River. Adult susceptibility tests were performed on An. sacharovi using diagnostic doses of insecticides accordance to World Health Organization (WHO) guidelines. The study also evaluated agricultural insecticide and fertilizer usage alongside the presence of natural mosquito predators in breeding sites in the study area.ResultsAlongside various chemicals such as silica, humic acid, superphosphate, sulfur, urea, and solupotasse at different dose levels, organophosphorus and pyrethroid insecticides are commonly used in rice fields and orchards. Anopheles sacharovi displayed diverse reactions to insecticides, demonstrating resistance to DDT but sensitivity to malathion, and showing similar reactions to carbamate and pyrethroid insecticides.ConclusionsThese results provide significant insights into agricultural practices and the presence of mosquito larvae in the study area. The extensive use of a specific herbicide illustrates its popularity among farmers for weed control, while other agricultural products focus on enhancing soil fertility and productivity. The absence of mosquito larvae in habitats with predators indicates the usefulness of these predators in controlling the population of mosquitoes. The resistance of mosquitoes to certain insecticides highlights the need for careful selection and intermittent use of insecticides in vector control programs. These findings can inform the development of targeted strategies to reduce malaria transmission risks. Further research is essential for assessing the effectiveness of these interventions.

Legitimacy in polycentric groundwater governance: Framework conditions identified in Nebraska's Natural Resource Districts

AbstractThis study considers how and why agricultural groundwater users would limit their own water consumption. We find that voluntary governance arrangements are based on a form of legitimacy that stems from informal social processes. Agricultural irrigation reform in Nebraska, U.S. took place after decades of collaboration in informal social settings; this background of decentralized rulemaking contributed to legitimizing extraction limits in times of water stress. The dimensions of social legitimacy are assessed through triangulation of interview data, integrated management plans, workshop facilitation, and recordings of legal proceedings related to the Natural Resources Districts in the state of Nebraska. These districts initially placed voluntary limits on extraction but evolved to sanction violators for over‐consumption. Groundwater rules are accepted because they are set by publicly elected boards, leaders participate in a state‐wide leadership training network, and the districts are granted rule‐making authority by the state. Our results show that voluntary self‐limiting behavior can form the basis for binding legal requirements. The legitimacy of polycentric governance stems from social acceptance, inclusive membership, a prior history of collaboration, and an understanding of rules. The rules themselves are context‐specific and self‐made. We summarize these elements in an evaluation framework to test whether and how authority in other polycentric groundwater governance arrangements is justified and accepted.

Enhanced biodegradation of glyphosate by Chlorella sorokiniana engineered with exogenous purple acid phosphatase

Organophosphate pesticides, particularly glyphosate, persist in aquatic environments due to widespread agricultural usage, posing substantial environmental and health risks. This study explores the bioremediation potential of genetically engineered Chlorella sorokiniana, expressing purple acid phosphatase (PAP) from Phaeodactylum tricornutum, for glyphosate biodegradation. The engineered strain (OE line) demonstrated complete glyphosate biodegradation at concentrations below 10 ppm within 4–6 days, surpassing the wild type (WT). Enhanced biodegradation in the OE line was attributed to increased growth and ATP levels due to the release of inorganic phosphate, indicating enhanced metabolic efficiency. Photosynthetic parameters, as well as chlorophyll, and carotenoid contents, were significantly improved, driving higher biomass accumulation. Metabolic shifts toward lipogenesis were observed, supported by the upregulation of triacylglycerol-related genes. Additionally, antioxidant enzyme activities (GPx, SOD, CAT) were elevated in the OE line, mitigating oxidative stress. Importantly, the overexpression of PAP activated and upregulated the level of endogenous CsPAP18, which displayed stable binding with glyphosate and its metabolite aminomethylphosphonic acid, highlighting the synergistic role of PAP and CsPAP18 in glyphosate biodegradation. The OE line effectively treated glyphosate-contaminated real wastewater, confirming the feasibility of engineered strain for environmental remediation. This study provides valuable insights into the potential of engineered microalgae for effective and sustainable wastewater treatment, specifically targeting the removal of organophosphate contaminants in freshwater environments.

Two‐Way Option Contracts That Facilitate Adaptive Water Reallocation in the Western United States

AbstractMany water markets in the western United States (U.S.) have the ability to reallocate water temporarily during drought, often as short‐term water rights leases from lower value irrigated activities to higher value urban uses. Regulatory approval of water transfers, however, typically takes time and involves high transaction costs that arise from technical and legal analyses, discouraging short‐term leasing. This leads municipalities to protect against drought‐related shortfalls by purchasing large volumes of infrequently used permanent water rights. High transaction costs also result in municipal water rights rarely being leased back to irrigators in wet or normal years, reducing agricultural productivity. This research explores the development of a multi‐year two‐way option (TWO) contract that facilitates leasing from agricultural‐to‐urban users during drought and leasing from urban‐to agricultural users during wet periods. The modeling framework developed to assess performance of the TWO contracts includes consideration of the hydrologic, engineered, and institutional systems governing the South Platte River Basin in Colorado where there is growing competition for water between municipalities (e.g., the city of Boulder) and irrigators. The modeling framework is built around StateMod, a network‐based water allocation model used by state regulators to evaluate water rights allocations and potential rights transfers. Results suggest that the TWO contracts could allow municipalities to maintain supply reliability with significantly reduced rights holdings at lower cost, while increasing agricultural productivity in wet and normal years. Additionally, the TWO contracts provide irrigators with additional revenues via net payments of option fees from municipalities.

Microplastic contamination in Chinese topsoil from 1980 to 2050

China's soil is experiencing significant microplastic contamination. We developed a machine-learning model to assess microplastic pollution from 1980 to 2050. Our results showed that the average abundance of microplastics in topsoil increased from 45 items per kilogram of soil in 1980 to 1156 items by 2018, primarily due to industrial growth (39 %), agricultural film usage (30 %), tire wear (17 %), and domestic waste (14 %). During the same period, microplastic levels in cropland rose from 98 to 2401 items per kilogram of soil, and exposure levels for the Chinese population increased from 808 to 3168 items per kilogram. By 2050, a reduction in the use of agricultural films is expected to decrease cropland contamination by half. However, overall levels are anticipated to remain steady due to other persistent sources, indicating a continued spread of microplastics into subterranean environments, water bodies, and human systems. This study highlights China's microplastic challenges and suggests potential global trends, emphasizing the need for increased awareness and intervention worldwide.

Surface water dynamics of Africa: Analysing continental trends and identifying drivers for major lakes and reservoirs

ABSTRACT Africa has the most dynamic demographic development worldwide. Current projections predict a population of > 3 billion people by the end of the century. Sub-Saharan Africa alone will likely see a 40% increase in population between 2020 and 2050. Although it is well known that large parts of Africa are in a constant state of water stress, its surface water resources remain understudied. This study analyses long-term trends of surface water in Africa. It identifies causal impacts on major lakes and reservoirs for the timeframe 2003–2020, as well as dynamic and causal similarities between the various lakes. For this, a set of daily time series based on Earth observation is employed. Global WaterPack data is used for a daily uninterrupted time series of the continent’s surface water area. Additionally, an array of relevant independent variables, namely precipitation, total evapotranspiration, groundwater, soil moisture, and gross primary productivity (GPP) in different land use areas is analysed. For causal identification, the Peter and Clark Momentary Conditional Independence algorithm is used. Findings show that > 42% of African countries and > 34% of African ecoregions experience shrinking surface water area. Over 80% of investigated surface water bodies are driven by the surface water in their upstream subbasins and GPP in agriculturally used areas. About 85% of investigated lakes are significantly driven by agricultural usage, often in the form of water abstraction, as referenced regional studies confirm. Our analysis demonstrates the feasibility of conducting causal analyses of surface water dynamics using Earth observation data. Dynamically similar lakes are often impacted by the same drivers, forming regional lake clusters. Considering the causes identified may greatly help adapt strategies for sustainable development. A causality analysis to identify drivers of surface water dynamics has, to our knowledge, never been performed before on this scale and at such high temporal resolution.

A Review of Agricultural IoT: Challenges, Applications & Future Research Direction

The field of wireless communication has had significant boom in wireless communication, mostly driven by increasing demand for connectivity and technological advancements in low power transceiver development. An Agriculture IoT (AIoT) refers to the technology to enhance agricultural sustainability, productivity, and efficiency. The agricultural IoT uses artificial intelligence to build a network of interconnected systems by fusing digital sensors, IoT devices, advanced analytics, and cloud computing. Agricultural products will be in high demand by 2030 because of the 40% raise in global population. IoT technology is currently utilized in various industries, including agricultural for automation processes. Therefore time is saved, total productivity is increased and decisions are made more effectively and resulting in higher crop yields. AIoT is also being utilized more to keep updated on the sustainability of agricultural supply chains, environment and water usage. Several IoT applications and problems have been covered in this paper. There is also an outline of potential future agricultural research directions.

Socio-economic Impact Assessment of Salinity Prevention Structure-Bardasagar Scheme in Porbandar District of Gujarat, India

India's vast coastline, spanning 7,516 kilometers, faces a critical challenge of seawater intrusion, resulting in salinity issues that profoundly affect agriculture, water resources, and socio-economic well-being. Among the coastal states, Gujarat, with its extensive 1,600-kilometer coastline, bears a significant burden of this phenomenon. The Barda Sagar Prevention Scheme aims to mitigate these effects by managing water resources effectively, thereby reducing salinity impact in the Porbandar area of Gujarat and ensuring the well-being of local communities. The Barda Sagar Scheme, situated in Rinavada village within Porbandar taluka of Gujarat, stands as a vital initiative aimed at addressing these challenges. This study meticulously evaluates the scheme's impact on agriculture, livestock, and rural livelihoods in both upstream and downstream villages. The findings underscore the scheme's substantial positive influence on various facets of rural life. Significant shifts in cropping patterns and agricultural land usage, accompanied by notable increases in crop yields, particularly in principal crops like groundnut and cumin, demonstrate the scheme's efficacy in enhancing agricultural productivity. Moreover, changes in livestock population, production, and feeding practices suggest potential improvements in livestock management and productivity, despite some fluctuations in livestock populations. Access to safe drinking water, a fundamental aspect of rural livelihoods, has witnessed considerable improvement due to the scheme's implementation. Increased reliance on the Narmada pipeline and enhanced access to potable water across surveyed villages reflect positive strides in water security and overall living standards. However, the study also identifies various challenges and factors influencing the observed changes. Soil degradation, pest incidence, and the need for sustainable water management strategies emerge as notable challenges that require ongoing attention and intervention. While positive drivers such as increased rainfall and improved market access have facilitated progress, continued monitoring, and adaptive management remain imperative for ensuring the scheme's long-term sustainability and efficacy.

Antibiotic Resistance And The Future Of Infection Control

This review article focuses on the essential topic of antibiotic resistance, a growing global health threat that calls into question the efficacy of previously effective therapies. It starts by recognizing the enormous influence that antibiotics, which were discovered in the 20th century, have had on medicine. Despite their effectiveness in treating infections, these medications' overuse and abuse have had unforeseen repercussions. Pathogens have evolved a number of defense mechanisms against antibiotics as their usage in human healthcare, agriculture, and animal husbandry has increased. This resistance extends throughout communities and the environment in addition to occurring in clinical settings. The paper emphasizes how environmental variables, agricultural runoff, and other microbes can all contribute to the acquisition of resistance genes. It highlights how gene transfer contributes to the rapid proliferation of resistant strains. The worldwide nature of travel and trade adds to the complexity of this problem by making it easier for resistant germs to spread across national boundaries. Many antibiotics could become ineffective as a result of this resistance crisis, which would raise healthcare expenses, lengthen hospital stays, and raise mortality rates. The essay emphasizes the necessity of a multipronged strategy, including improved antibiotic stewardship, surveillance initiatives, and public education, to counter this threat. It urges cooperation between researchers, legislators, and healthcare professionals in order to create novel remedies and encourage the prudent use of antibiotics. In order to protect public health for future generations, the review intends to increase awareness and motivate action against the spread of antibiotic resistance by addressing these interrelated issues.

Changing water quality of a major rainfed river system of western India: insights from the Bhima river using water quality index

The Bhima River originating from the Western Ghats of India, a global biodiversity hotspot, is one of the most dammed rivers, used intensively for multifaceted purposes including agriculture and domestic usage. The present study was undertaken from early pre-monsoon to start of monsoon of 2023 encompassing 68 sampling points across Bhima River and its tributaries to develop the water quality index (WQI). Environmental parameters including SWT, pH, DO, TDS and EC were measured in situ during the time of sampling. Surface water samples (1 L) was collected for estimation of dissolved nutrients. The concentration of dissolved oxygen was found to be below 2 mg l−1 in several sampling points representing hypoxic conditions of the riverine system. TDS and EC ranged from 55.12 ppm to 2983 ppm and 108.3 μS cm−1 to 5939 μS cm−1 respectively, indicating significant spatial and temporal variations. The concentration of dissolved ammonia (0.05 mg l−1–14.09 mg l−1), nitrate (5.88 mg l−1 to 1596.16 mg l−1), o-phosphate (0.21 mg l−1–35.47 mg l−1) and reactive silicate (36.70 mg l−1 to 1455.15 mg l−1) indicates possible influx of agricultural run-off and untreated municipal discharges. Calculations of water quality index (WQI) using the measured parameters showed ‘bad to very bad’ and ‘medium to good’ water quality along the Bhima River and its tributaries. In-depth analyses of WQI indicates pollution ‘hot-spots’ and hints toward urgent implementation of basin-level mitigation strategies for improvement of the ecological health of Upper Bhima basin.

Effects of Agricultural Land Use on Desert Soil Classification in Holy Karbala Governorate

This study was conducted to evaluate physical, chemical, and morphological features to classify soils at the subgroup level. The research area, located west of Karbala, consists of three locations, each comprising pedons in both cultivated and uncultivated lands. GPS coordinates were recorded, and morphological descriptions of pedon horizons were made in accordance with the American Soil Survey Manual. This study investigates the effect of agricultural land use on the classification of desert soils in the Holy Karbala Governorate. The results revealed that the dry climate caused diversity in the morphological features of the soils, mainly in horizon type, thickness, and arrangement. Agricultural usage had an impact on diagnostic horizons, particularly the gypsic horizon, and features such as soil color, structure, organic matter, carbonate minerals, gypsum, and root distribution. However, there was no substantial impact on soil texture development, and soils did not show a consistent pattern of soil separation distribution with depth, indicating weak pedogenic processes. The most common texture classes were loamy sand, sandy loam, and sand, with sand contents ranged from 902.08 to 574.12 g kg. Soil bulk density differed from 1.67 to 1.30 Mg m³, with lower values in farmed areas. Chemical properties were influenced, with soil pH ranging from 8.36 to 7.54, electrical conductivity (EC) from 5.46 to 2.03 dS m, cation exchange capacity (CEC) from 15.25 to 2.05 meq.100g, organic matter from 43.51 to 1.18 g kg, carbonate minerals from 461.18 to 174.06 g kg, and calcium sulfate from 182 to 21 g kg. The soils were classed as Aridisols because they were found in a dry desert with an Aridic moisture regime. The presence of distinctive saline layers such as Calcic and Gypsic was discovered, resulting in the classification of cultivated soils as Typic Haplocalcids and uncultivated lands as Typic Calcigypsids.

Effects of Plant Extracts on Growth Promotion, Antioxidant Enzymes, and Secondary Metabolites in Rice (Oryza sativa) Plants

Plant extracts are widely used in sustainable agriculture practices to enhance crop production and reduce chemical usage in agriculture. This study employed several extraction solutions of various plant extracts to synthesize planting and spraying strategies, assess the persistence efficacy of rice, and investigate the influence of selected water extracts on secondary chemicals at different rice planting stages. Among 17 water extracts that were evaluated on rice seeds, 7 were enhanced to align with the lengths of rice roots 50–70% and shoots 40–50%. The analysis of extraction, spraying, and planting experiments revealed that water extracts, soil application, and transplanting were the most efficient methods for stimulating rice growth, especially 0.1 and 0.5% concentrations. The efficacy of the extracts remained intact also after 14 days of treatment. This study showed that photosynthesis and antioxidant activities may play crucial roles in plant growth. Rice growth stimulation has been linked to photosynthesis, flavonoid contents, and antioxidant enzymes, providing a balanced supply of nutrients for plant growth. Among all tested water extracts, Psidium guajava, Aloe vera, Allium sativum, and Medicago sativa extracts can be used to promote plant growth in organic farming.

Environmental impact of modern agricultural practices: Strategies for reducing carbon footprint and promoting conservation

Modern agricultural practices have significantly transformed food production, leading to increased efficiency and productivity. However, these advancements have also had notable environmental impacts, particularly concerning carbon emissions and resource depletion. This study explores the environmental impact of contemporary agricultural practices, emphasizing the need for strategies to mitigate carbon footprints and enhance conservation efforts. Agriculture contributes substantially to greenhouse gas emissions through sources such as livestock, synthetic fertilizers, and fossil fuel consumption. These emissions contribute to climate change and global warming. Additionally, modern farming practices often lead to deforestation, habitat loss, and soil degradation, exacerbating biodiversity loss and reducing soil health. Water usage in agriculture also poses significant challenges, with high water consumption and pollution from runoff affecting water resources and aquatic ecosystems. To address these issues, several strategies can be employed to reduce the carbon footprint of agriculture. Adoption of sustainable farming practices such as conservation tillage and no-till farming can enhance soil carbon sequestration, improving soil health and reducing emissions. Agroforestry and cover cropping further contribute by capturing atmospheric carbon and improving soil structure. The integration of renewable energy sources like solar and wind power in farming operations, along with energy-efficient technologies, can also reduce reliance on fossil fuels and lower overall greenhouse gas emissions. Promoting conservation involves implementing practices that protect and restore natural resources. Soil conservation methods, including erosion control techniques like terracing and contour plowing, help maintain soil health and prevent degradation. Efficient water management strategies, such as drip irrigation and rainwater harvesting, reduce water consumption and mitigate pollution from runoff. Biodiversity conservation can be supported through the preservation of natural habitats and the promotion of biodiverse farming systems, which enhance ecosystem resilience and stability. Effective policy frameworks and support mechanisms are crucial for driving the adoption of these strategies. Government policies, including environmental regulations and incentives, play a pivotal role in encouraging sustainable practices. Research and innovation are essential for developing new technologies and practices, while education and extension services ensure the dissemination of knowledge and best practices to farmers. Modern agricultural practices have significant environmental impacts, but through the adoption of sustainable practices and innovative strategies, it is possible to reduce carbon footprints and promote conservation. Continued research, supportive policies, and effective implementation of conservation strategies are essential for achieving a more sustainable agricultural future. Keywords: Environmental Impact, Agricultural Practices, Carbon Footprint.

THE ECONOMIC AND LEGAL NATURE OF THE MINIMUM TAX LIABILITY

The relevance of the study of the economic and legal nature of the minimum tax liability is due to several factors. Firstly, being relatively new for Ukraine, this type of tax has not yet been sufficiently studied by scholars. Secondly, due to the specifics of the object of taxation, the introduction of the minimum tax liability significantly affects the taxation of farmers – owners of agricultural land and land users, producers of agricultural products, who are among the most vulnerable segments of the population. Thirdly, such a reform of the tax burden on business entities in agriculture, as one of the sectors most affected by Russia's armed aggression, requires a thorough analysis of its timeliness and appropriateness. This necessitates a study of theoretical and practical aspects, potential risks of introducing the minimum tax liability, as well as the formulation of proposals for solving problematic issues in this area, which is the purpose of the study. The research methodology includes a number of methods of scientific knowledge: the philosophical (dialectical) method, general scientific methods (the method of analysis and the formal logical method), as well as methods related to special scientific methods (formal legal and comparative legal). Results. The study of the economic and legal nature of the minimum tax liability concluded that there is a tendency to expand the range of taxpayers. In particular, at the expense of individuals – members of private farms. The article proves that such innovations lead to the loss of existing tax privileges for farms and increase the tax burden for these entities. The authors identify the risks of introducing a minimum tax liability, including incentives for farmers to alienate agricultural land or transfer it to other persons, alienation of farmers from the main means of production, and increased unemployment. It is established that the introduction of the minimum tax liability under the existing conditions is a violation of the fundamental principles of tax legislation of Ukraine. The generalisations obtained can be used to amend the tax legislation and will be useful in conducting scientific research on tax and agricultural legal relations.

Physicians’ and pharmacists’ knowledge and perceptions of antibiotic resistance and antibiotic stewardship: a cross-sectional survey in a tertiary hospital

BackgroundThe WHO global action plan on antibiotic resistance (ABR) emphasises improving awareness of ABR and optimising antibiotic use.ObjectivesTo assess physicians’ and pharmacists’ knowledge and perceptions of ABR and antibiotic stewardship (AS) and hospital preparedness to implement AS.MethodsThis descriptive cross-sectional survey included 124 physicians and 61 pharmacists from the University of Uyo Teaching Hospital, Akwa Ibom State, Nigeria. Participants were given a 16-item questionnaire during their clinical/review meetings. The data were analysed with SPSS version 25.0.ResultsBoth physicians (98%) and pharmacists (97%) perceived ABR as a global and national concern. Only 47% of physicians and 53% of pharmacists accurately defined AS. More pharmacists (70%) than physicians (45%) knew that excessive antibiotic usage in agriculture and livestock causes resistance (p = 0.002) and that prompt de-escalation of empirical antibiotic therapy based on culture/sensitivity results reduces ABR (93% vs. 79%, respectively, p = 0.013). Knowledge scores varied among physicians according to position (p = 0.002), length of practice (p < 0.001), and age (p = 0.002); only pharmacists' age (p = 0.046) was associated with their knowledge level.ConclusionsParticipants demonstrated good knowledge of ABR and AS strategies but little awareness about the hospital’s intention to implement AS programmes. Hospital management should emphasise optimising antibiotic use through AS programmes.

Understanding the persistence of hexachlorobenzene and its intermediates in agricultural chemical usage areas

This study examined the presence and distribution of Hexachlorobenzene (HCB) and its derivatives in sediment samples. The investigation was conducted in a watershed along the Lum Stream agricultural area during the 2021 rainy season. The results showed HCB persistence despite being banned for a prolonged period. The water quality, indicated by the suspended solids (SS) and organic content, was evaluated at ten different observation points. However, only trace amounts of chemicals were detected in the sediment samples. The concentration levels of HCB, PeCB, and 1235-TeCB in the sediments ranged from 0.032 to 0.631 ppm, 0.018 to 0.485 ppm, and 0.091 to 0.366 ppm, respectively. The relationship between HCB, SS, and organic content was analyzed monthly, revealing interesting patterns. For instance, June and July exhibited similar trends, while HCB and its intermediates were negatively correlated with distance in September. Furthermore, a positive correlation was observed between 1235-PeCB and BOD of 0.48. This implies that as the amount of 1235-PeCB increased in the sediment samples, the BOD of the water also increased, suggesting a possible impact of 1235-PeCB on the water quality. GRAPHICAL ABSTRACT HIGHLIGHTS Persistent Organic Pollutants (POPs) have been detected in trace amounts over an extended period, constituting a part of the environmental compartment where they remain. The re-emergence of suspended solids in river water is likely to have a significant correlation with the concentration of Hexachlorobenzene (HCB) and its intermediary compounds.

Motivation and opportunity may drive Tunisian farmers to reduce chemical pesticides in horticulture

This study investigates the sociopsychological factors influencing Tunisian farmers’ adoption of sustainable pest management techniques by employing the motivation-opportunity-ability framework and using partial least squares structural equation modelling. It is the first empirical study to test this framework in predicting farmers’ readiness to reduce pesticide usage in agriculture, distinguishing between intrinsic and extrinsic motivations. The findings reveal that both intrinsic and extrinsic motivations significantly impact farmers’ readiness to reduce pesticide use. Particularly, extrinsic motivations, such as peer influence and prevailing practices within the community, play a crucial role, highlighting the importance of social dynamics in sustainable agricultural decisions. Additionally, opportunities to adopt non-chemical pest control methods, enhanced by access to information and technology, positively influence farmers’ intentions to minimize pesticide use. These results suggest that enhancing farmers’ motivation through targeted educational programs and fostering opportunities via supportive policy environments are key strategies to promoting sustainable pest management practices in the region.

Modelling Soil Moisture Content with Hydrus 2D in a Continental Climate for Effective Maize Irrigation Planning

In light of climate change and limited water resources, optimizing water usage in agriculture is crucial. This study models water productivity to help regional planners address these challenges. We integrate CROPWAT-based reference evapotranspiration (ETo) with Sentinel 2 data to calculate daily evapotranspiration and water needs for maize using soil and climate data from 2021 to 2023. The HYDRUS model predicted volumetric soil moisture content, validated against observed data. A 2D hydrodynamic model within HYDRUS simulated temporal and spatial variations in soil water distribution for maize at a non-irrigated site in Hungary. The model used soil physical properties and crop evapotranspiration rates as inputs, covering crop development stages from planting to harvest. The model showed good performance, with R² values of 0.65 (10 cm) and 0.81 (60 cm) in 2021, 0.51 (10 cm) and 0.50 (60 cm) in 2022, and 0.38 (10 cm) and 0.72 (60 cm) in 2023. RMSE and NRMSE values indicated reliability. The model revealed water deficits and proposed optimal irrigation schedules to maintain soil moisture between 32.2 and 17.51 V/V%. This integrated approach offers a reliable tool for monitoring soil moisture and developing efficient irrigation systems, aiding maize production’s adaptation to climate change.