Agrochemicals

农用化学品
  • 文章类型: Journal Article
    该研究旨在评估孟加拉国种植马铃薯的农民使用农药的程度及其与知识的关系,态度,和社会人口特征。通过多阶段随机抽样,使用半结构化问卷从553名农民那里收集数据。进行了双变量分析,以检查农药使用频率与各种社会人口统计学因素之间的关系。结果显示,在报告的321种不同的农药品牌中,50.5%登记,47.7%未注册,1.9%被禁止。在注册的农药中,5.6%是高度危险的,24.8%为中度危险,根据世界卫生组织类别,6.2%的人略有危险。很高比例(96%)的农民报告说在他们的田地里使用杀虫剂,16.6%的人在一个种植季节施用农药超过五次。数据显示,大多数农民意识到农药对健康和环境的负面影响。大多数农民使用手巾(77.9%)和普通衬衫(70.0%)覆盖自己的身体,以避免农药接触。还观察到空农药容器的不适当处置。负二项回归分析显示,农药施用频率与马铃薯生产力之间存在显着正相关,化肥施用量,农民拥有的土地面积,以及他们对农药对人类健康的负面影响的认识。该研究建议采取综合虫害管理措施,开发抗虫马铃薯品种,确保安全的处理方法和处置以及严格执行法律,以减轻农药的外部性,从而确保农业的可持续性。
    The study aimed to assess the extent of pesticide use among potato-growing farmers in Bangladesh and its relationship with their knowledge, attitude, and socio-demographic characteristics. Data were collected from 553 farmers using a semi-structured questionnaire through multistage random sampling. Bivariate analysis was conducted to examine the relationship between the frequency of pesticide use and various socio-demographic factors. Results showed that out of 321 different pesticide brands reported, 50.5% were registered, while 47.7% were unregistered and 1.9% were banned. Among the registered pesticides, 5.6% were highly hazardous, 24.8% were moderately hazardous, and 6.2% were slightly hazardous as per World Health Organization category. A high percentage (96%) of farmers reported using pesticides in their fields, with 16.6% applying pesticides more than five times in a cropping season. Data revealed that majority of the farmers were aware of the negative effect of pesticides on health and environment. Most farmers used hand towels (77.9%) and ordinary shirts (70.0%) to cover their bodies to avoid pesticide exposure. Inappropriate disposal of empty pesticide containers was also observed. Negative binomial regression analysis revealed significant positive associations between the frequency of pesticide application and potato productivity, rate of fertilizer application, area of land owned by farmers, and their knowledge about the negative effects of pesticides on human health. The study suggests adopting integrated pest management practices, developing pest-resistant potato varieties, ensuring safe handling practices and disposal as well as stringent enforcement of laws to mitigate pesticide externalities and hence ensure sustainability in agriculture.
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  • 文章类型: Journal Article
    向农作物提供精确的农用化学品对于可持续农业生产力至关重要。最近,Liuetal.开发了高度生物相容性的智能微载体,用于向植物提供精确的农用化学品,可以有效地提供营养,同时减少径流。这种创新和精确的农用化学品输送系统代表了高效和生态友好型作物种植实践的重大进步。
    Precise agrochemical delivery to crops is vital for sustainable agricultural productivity. Recently, Liu et al. developed highly biocompatible smart microcarriers for precise agrochemical delivery to plants that can effectively provide nutrition while reducing runoff. This innovative and precise agrochemical delivery system represents a significant advancement in efficient and eco-friendly crop cultivation practices.
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  • 文章类型: Journal Article
    当木质纤维素生物质在生物精炼厂中加工成纤维时,将产生额外的1亿吨/年木质素副产物,糖,糖生物燃料,和生物产品。这将使制浆和造纸中已经产生的木质素的量加倍。与导致木质素磺酸盐(总量的88%)或牛皮纸木质素(9%)的制浆不同,水基生物精炼留下非磺化木质素和芳香族分子。这种新型的木质素为大量农业用途提供了机会,例如控释载体和土壤改良剂,以及新化学物质的原料,这些原料导致化学工业的分子构建块和可持续航空生物燃料的前体。
    An additional 100 million tons/year of lignin coproduct will result when lignocellulosic biomass is processed in biorefineries to fiber, sugars, biofuels, and bioproducts. This will double the amount of lignin already generated from pulping and paper production. Unlike pulping that results in lignosulphonate (88% of total) or Kraft lignin (9%), aqueous-based biorefining leaves behind non-sulfonated lignin and aromatic molecules. This new type of lignin provides opportunities for large volume agricultural uses such as controlled-release carriers and soil amendments as well as feedstocks for new chemistries that lead to molecular building blocks for the chemical industry and to precursors for sustainable aviation biofuels.
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  • 文章类型: Journal Article
    气候变化迫使农业面对迅速增长的生物营养真菌病原体的毒力,这反过来又促使研究人员寻找新的方法来对抗或限制由其引起的疾病的传播。虽然在这种情况下使用农用化学品可能是最有效的策略,重要的是要确保这些化学品对自然环境是安全的。杂环化合物具有巨大的生物潜力。一系列杂环支架(1,3,4-噻二唑,1,3-噻唑,1,2,4-三唑,苯并噻嗪,苯并噻二嗪,研究了含有2,4-二羟基芳基取代基的喹唑啉)抑制与几种重要谷物疾病相关的生物营养真菌病原体生长和发育的能力。在33种被分析的化合物中,3被鉴定为对Blumeria和Puccinia真菌具有高抑制潜力。进行的研究表明,分析的化合物可用于降低谷物中真菌疾病的发生率;然而,需要进一步深入研究,以调查它们对植物病原体系统的影响,包括分子研究以确定其活性的确切机制。
    Climate change forces agriculture to face the rapidly growing virulence of biotrophic fungal pathogens, which in turn drives researchers to seek new ways of combatting or limiting the spread of diseases caused by the same. While the use of agrochemicals may be the most efficient strategy in this context, it is important to ensure that such chemicals are safe for the natural environment. Heterocyclic compounds have enormous biological potential. A series of heterocyclic scaffolds (1,3,4-thiadiazole, 1,3-thiazole, 1,2,4-triazole, benzothiazine, benzothiadiazine, and quinazoline) containing 2,4-dihydroxylaryl substituents were investigated for their ability to inhibit the growth and development of biotrophic fungal pathogens associated with several important cereal diseases. Of the 33 analysed compounds, 3 were identified as having high inhibitory potential against Blumeria and Puccinia fungi. The conducted research indicated that the analysed compounds can be used to reduce the incidence of fungal diseases in cereals; however, further thorough research is required to investigate their effects on plant-pathogen systems, including molecular studies to determine the exact mechanism of their activity.
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  • 文章类型: Journal Article
    农药是用来预防的物质,摧毁,或减轻任何害虫。它们的滥用会给生态系统带来严重问题,污染地表和地下水并影响周围的生物群。然而,在环境中,各种自然过程,如生物降解和光降解可以减轻其持久性,因此,它们的生态毒理学影响。在这方面,本研究旨在获得农药对生物指示植物产生细胞毒性作用的相关数据。正如在文献综述中观察到的那样,细胞抑制,核异常,和微核指数是农药中常见的一些不同的影响。这些化学物质可以在植物生物测定中引起细胞遗传学改变。植物生物指标,如洋葱,维西亚·法巴·L,PisumsativumL,LactucasativaL,和CulinarisMed是鉴定农药细胞遗传毒性的非常重要和有效的实验模型。这些已经有很多年了。然而,由于它们在检测和监测农药等化学物质方面的有效性,它们今天仍然被使用。
    Agrochemicals are substances used to prevent, destroy, or mitigate any pest. Their indiscriminate use can cause serious problems in ecosystems, contaminating surface and groundwater and affecting surrounding biota. However, in the environment, various natural processes such as biological degradation and photodegradation can mitigate their persistence and, consequently, their ecotoxicological impact. In this regard, this study aimed to obtain relevant data on the cytotoxic effects produced by pesticides on bioindicator plants. As observed in the literature review, cellular inhibition, nuclear anomalies, and micronucleus index are some of the different impacts commonly known from pesticides. These chemical substances can cause cytogenetic alterations in a plant bioassay. Plant bioindicators such as Allium cepa L, Vicia faba L, Pisum sativum L, Lactuca sativa L, and Lens culinaris Med are very important and effective experimental models for identifying the cytogenotoxicity of pesticides. These have been available for many years. However, they are still used today for their effectiveness in detecting and monitoring chemical substances such as agrochemicals.
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  • 文章类型: Journal Article
    安全作物保护产品的开发是一个复杂的过程,传统上依赖于密集的动物使用来进行危害识别。在农业化学发现计划的早期阶段捕获毒性的方法可以实现更有效和可持续的产品开发流程。这里,我们探讨了斑马鱼模型是否可用于鉴定哺乳动物相关毒性.我们使用转基因斑马鱼来评估暴露于已知哺乳动物致畸剂和捕获的幼虫形态畸形后的发育毒性,包括骨骼和血管扰动。我们进一步应用毒性基因组学来鉴定致畸剂暴露的常见生物标志物特征。结果表明,幼虫畸形试验预测致畸性的准确率为82.35%,87.50%的特异性,灵敏度为77.78%。通过血管和骨骼测定获得了相似且稍低的准确性,分别。确定了一组20种生物标志物,这些生物标志物有效地将致畸化学物质与非致畸化学物质分离。总之,斑马鱼很有价值,健壮,以及在产品开发的早期阶段进行毒性测试的具有成本效益的模型。
    The development of safe crop protection products is a complex process that traditionally relies on intensive animal use for hazard identification. Methods that capture toxicity in early stages of agrochemical discovery programs enable a more efficient and sustainable product development pipeline. Here, we explored whether the zebrafish model can be leveraged to identify mammalian-relevant toxicity. We used transgenic zebrafish to assess developmental toxicity following exposures to known mammalian teratogens and captured larval morphological malformations, including bone and vascular perturbations. We further applied toxicogenomics to identify common biomarker signatures of teratogen exposure. The results show that the larval malformation assay predicted teratogenicity with 82.35% accuracy, 87.50% specificity, and 77.78% sensitivity. Similar and slightly lower accuracies were obtained with the vascular and bone assays, respectively. A set of 20 biomarkers were identified that efficiently segregated teratogenic chemicals from nonteratogens. In conclusion, zebrafish are valuable, robust, and cost-effective models for toxicity testing in the early stages of product development.
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  • 文章类型: Journal Article
    背景:病虫害是撒哈拉以南非洲产量损失的主要原因,促使小农寻求具有成本效益的,可获得的和生态友好的作物保护替代品。这项研究探索了影响Ehlanzeni区八个选定村庄农作物的病虫害的管理,姆普马兰加省,南非。
    方法:利用雪球技术有目的地选择了120个小农。使用半结构化访谈时间表,通过访谈和焦点小组讨论收集了有关植物病虫害管理的信息。民族植物学指数,包括相对引用频率(RFC),使用价值(UV)和线人共识因子(FIC),用于对研究区域中用于作物保护的植物进行量化和排名。
    结果:属于16个科的23种植物(16种自然外来植物和7种本地植物)用于管理害虫(脊椎动物和无脊椎动物)和影响作物的疾病(真菌和细菌相关)研究区域。参与者种植的主要(100%)作物是洋葱,印度芒果,SolanumlycopersicumL.和ZeamaysL.RFC值范围为0.08至0.83,三种最受欢迎的作物保护植物是CapciumannuumL.(0.83),A.cepa(0.63)和Dichrostachyscinerea(L.)怀特和阿恩。(0.43)。就UV而言,用作生物防治的五种最有前途的植物是Tulbaghiaviolacea(0.13),A.cepa(0.12),C.annuumL.(0.09),茄属喜树根。前A.Richi.(0.09)和松果松(0.08)。基于FIC,建立了四个类别,并以真菌病为主(0.64)。此外,紫罗兰T.和A.cepa是最常被提及的对抗真菌条件的植物。引用的其他类别是细菌性疾病(0.3),无脊椎动物害虫(0.11)和脊椎动物害虫(0.14),这表明小农对用于其管理的植物的共识或常识有限。制备方法包括浸渍(38%),汤剂(38%)和灼烧(24%)。在处理作物病虫害期间,叶面施用(67%)和土壤浸透(33%)用于施用植物提取物。
    结论:该研究强调了植物药和相关土著知识在姆普马兰加省小农中的重要性,南非。通过生成有关其生物功效和植物化学概况的经验数据来探索这些植物药的价值是相关的。
    BACKGROUND: Pests and diseases are a major contributor to yield losses in sub-Saharan Africa, prompting smallholder farmers to seek cost-effective, accessible and ecologically friendly alternatives for crop protection. This study explored the management of pests and diseases affecting crops across eight selected villages in Ehlanzeni District, Mpumalanga Province, South Africa.
    METHODS: A total of 120 smallholder farmers were purposefully selected utilising the snowball technique. Information on the management of plant pests and diseases was collected through interviews and focus group discussions using semi-structured interview schedules. Ethnobotanical indices, including relative frequency of citation (RFC), use-value (UV) and informant consensus factor (Fic), were used to quantify and rank the plants used for crop protection in the study area.
    RESULTS: Twenty-three plant species (16 naturalised exotics and seven indigenous plants) belonging to 16 families were used for managing pests (vertebrates and invertebrates) and diseases (fungal and bacterial related) affecting crops in the study area. The dominant (100%) crops cultivated by the participants were Allium cepa L., Mangifera indica L., Solanum lycopersicum L. and Zea mays L. The RFC value ranged from 0.08 to 0.83 and the three most popular plants for crop protection were Capsium annuum L. (0.83), A. cepa (0.63) and Dichrostachys cinerea (L.) Wight & Arn. (0.43). In terms of the UV, the five most promising plants used as biocontrol were Tulbaghia violacea (0.13), A. cepa (0.12), C. annuum L. (0.09), Solanum campylacanthum Hochst. Ex A.Rich.(0.09) and Pinus pinaster (0.08). Based on the Fic, four categories were established and dominated by fungal diseases (0.64). Furthermore, T. violacea and A. cepa were the most often mentioned plants used against fungal conditions. Other categories cited were bacterial diseases (0.3), invertebrate pests (0.11) and vertebrate pests (0.14), an indication that smallholder farmers had limited agreement or common knowledge about the plants used for their management. The preparation methods included maceration (38%), decoction (38%) and burning (24%). Foliar application (67%) and soil drenching (33%) were used for administering plant extracts during the management of crop pests and diseases.
    CONCLUSIONS: The study highlights the importance of botanicals and associated indigenous knowledge among smallholder farmers in Mpumalanga Province, South Africa. It is pertinent to explore the valorisation of these botanicals by generating empirical data on their biological efficacies and phytochemical profiles.
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  • 文章类型: Journal Article
    新的证据表明,低剂量的压力刺激,高剂量抑制,有机体的反应-一种被称为兴奋的现象。这里,我们提出了一个利用hormesis原则来优化农用化学品使用和减轻污染的框架。我们讨论了如何在农业化学环境中应用hormesis,并强调了超越科学的挑战和需求,提供可持续环境解决方案的视角。
    Emerging evidence reveals that low doses of stress stimulate, and high doses suppress, organism responses - a phenomenon known as hormesis. Here, we propose a framework for harnessing hormesis principles to optimize agrochemical use and mitigate pollution. We discuss how hormesis can be applied in agrochemical context and highlight challenges and needs beyond scientific research, offering a perspective for sustainable environmental solutions.
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  • 文章类型: Journal Article
    背景:中低收入国家的慢性肾脏病(CKD)前景不佳。尼日利亚的现代农业做法与除草剂和杀虫剂的使用越来越相关。
    目的:该研究旨在评估尼日利亚西南部农村农业社区居民在农业实践中使用农用化学品以及肾脏疾病的危险因素。
    方法:这是对尼日利亚西南部农村农业社区成年居民的横断面调查。与会者提供了人口统计信息,生活方式,知识,以及对肾病危险因素的认识,以及农业化学品在农业实践中的使用。人体测量和血压值,同时收集血液和斑点尿液进行随机血糖,血清肌酐,尿液分析,和白蛋白肌酐比.
    结果:共有572名农村居民参加了这项研究,平均年龄为49.9±17.5岁,男性占39.3%,从事积极农业的占88.9%。肾脏病的传统危险因素患病率为高血压(24.3%),糖尿病(2.8%),吸烟(7.5%),酒精摄入量(20.8%)和草药消费量(57.1%)。杀虫剂/除草剂的使用量占69.9%,25.3%的人在使用过程中没有使用防护装备。蛋白尿,血尿,并在29.8%观察到eGFR降低,6.1%,33.9%的参与者,分别。
    结论:这项研究表明,除草剂和农药使用以及肾脏疾病的传统危险因素的患病率很高,此外,在尼日利亚西南部农村农业聚居区的居民中,肾脏损害标志物的患病率很高。
    BACKGROUND: The outlook of chronic kidney disease (CKD) in low-and-medium-income-countries is poor. Modern farming practices in Nigeria are becoming increasingly associated with the use of herbicides and pesticides.
    OBJECTIVE: The study aimed to evaluate agrochemical use in farming practices and risk factors for kidney disease among dwellers of rural farming communities in South-West Nigeria.
    METHODS: This was a cross-sectional survey of adult dwellers of an agrarian rural farming community in South-West Nigeria. Participants provided information on demographics, lifestyles, knowledge, and awareness of risk factors for kidney disease, and the use of agrochemicals in farming practice. Anthropometric measurements and blood pressure values were obtained while blood and spot urine were collected for random blood glucose, serum creatinine, urinalysis, and albumin-creatinine ratio.
    RESULTS: A total of 572 rural dwellers were enrolled in the study, with a mean age of 49.9 ± 17.5 years while 39.3% were male and 88.9% engaged in active farming. The prevalence of traditional risk factors for kidney disease was hypertension (24.3%), Diabetes mellitus (2.8%), cigarette smoking (7.5%), alcohol intake (20.8%) and herbal consumption (57.1%). The use of pesticides/herbicides was reported in 69.9%, while 25.3% did not use protective gear during its use. Proteinuria, hematuria, and reduced eGFR were observed in 29.8%, 6.1%, and 33.9% of participants, respectively.
    CONCLUSIONS: This study showed a high prevalence of herbicides and pesticide use and traditional risk factors for kidney disease, in addition to the high prevalence of markers of kidney damage among the dwellers of rural farming settlements in South-West Nigeria.
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  • 文章类型: Journal Article
    世界人口的增加和农业实践的加强导致几种污染物释放到环境中,尤其是农药和重金属。本文综述了使用吸附剂和催化材料进行环境净化的最新进展。不同的材料,包括粘土,含碳的,金属,聚合物,和混合材料,对其去除污染物的有效性进行了评估。吸附是一种有效的技术,由于其成本低,操作简单,和吸附剂再生的可能性。催化过程,尤其是那些使用金属纳米颗粒的,提供高效降解复杂的农药。结合这些技术可以提高补救过程的效率,促进更可持续和实用的方法,以减轻农药和其他农业污染物对环境的影响。因此,本文旨在介绍几种用作吸附剂和催化剂的材料,用于净化受农业污染物影响的生态系统。它讨论了文献中的最新作品以及在环境修复中使用这些材料的未来观点。此外,它探讨了使用绿色化学原理生产可持续材料和使用农业工业废物作为新材料的前体从环境中去除污染物的可能性。
    The increase in the world population and the intensification of agricultural practices have resulted in the release of several contaminants into the environment, especially pesticides and heavy metals. This article reviews recent advances in using adsorbent and catalytic materials for environmental decontamination. Different materials, including clays, carbonaceous, metallic, polymeric, and hybrid materials, are evaluated for their effectiveness in pollutant removal. Adsorption is an effective technique due to its low cost, operational simplicity, and possibility of adsorbent regeneration. Catalytic processes, especially those using metallic nanoparticles, offer high efficiency in degrading complex pesticides. Combining these technologies can enhance the efficiency of remediation processes, promoting a more sustainable and practical approach to mitigate the impacts of pesticides and other agricultural pollutants on the environment. Therefore, this review article aims to present several types of materials used as adsorbents and catalysts for decontaminating ecosystems affected by agricultural pollutants. It discusses recent works in literature and future perspectives on using these materials in environmental remediation. Additionally, it explores the possibilities of using green chemistry principles in producing sustainable materials and using agro-industrial waste as precursors of new materials to remove contaminants from the environment.
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