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Terminalia arjuna Bark Biosorbent for Efficient Lead (II) Removal from Synthetic Wastewater 从合成废水中高效去除铅 (II) 的树皮生物吸附剂
Pub Date : 2024-06-02 DOI: 10.9734/jsrr/2024/v30i62093
Sachin Kumari, Sushila Singh, V. Sangwan, Indu Rani
Aim: Heavy metal such as lead ions is toxic and its entry in water environment is a threat to human as well as aquatic life. Plant based adsorbents have attracted a great attention as ecofriendly and low-cost adsorbent.  The goal of this study was to prepare adsorbent from Terminalia arjuna bark using chemicals named hydrochloride followed by sodium hydroxide for lead ions removal. Study Design: The research is experimental in nature. Place and Duration of Study: This research was conducted in Department of Chemistry and Biochemistry at CCSHAU, Hisar in year 2022-23. Methodology: The functionality, surface morphology, and elemental analysis of that biosorbent was analysed by FTIR, FE-SEM with EDX respectively. The bark samples were treated with 400 mL of 0.1 M hydrochloride and 400 mL of 0.01 M sodium hydroxide, respectively, before being used as an adsorbent. Batch studies were done for biosorption of heavy metal ions. The maximum biosorption capacity of lead ions were optimized by varying the pH (2-8), lead ions concentration (10- 100 mg/L), biosorbent dose (0.01-0.04 g/50mL), and contact time (10–60 minutes). Results: The maximum removal efficiency of about 71% was obtained at 6 pH having 0.03g of biosorbent at 27⁰C for 60 minutes. The Freundlich adsorption isotherms and pseudo first order kinetics models were the most suitable for the biosorption of lead ions and the maximum adsorption capacity was 125 mgg-1 at optimized time 60 minutes. Conclusion: The finding indicated that Terminalia arjuna bark based biosorbents would potentially be an inexpensive and environment friendly for lead ions removal from water environment.
目的:铅离子等重金属具有毒性,进入水环境会对人类和水生生物造成威胁。植物性吸附剂作为一种生态环保、成本低廉的吸附剂备受关注。 本研究的目的是利用盐酸和氢氧化钠等化学物质,制备出植物树皮吸附剂,用于去除铅离子。研究设计:研究为实验性质。研究地点和时间:本研究于 2022-23 年在希萨尔 CCSHAU 化学与生物化学系进行。研究方法:分别用傅立叶变换红外光谱、FE-SEM 和 EDX 分析了该生物吸附剂的功能、表面形态和元素分析。树皮样品在用作吸附剂之前分别用 400 mL 0.1 M 盐酸和 400 mL 0.01 M 氢氧化钠进行处理。对重金属离子的生物吸附进行了批量研究。通过改变 pH 值(2-8)、铅离子浓度(10- 100 mg/L)、生物吸附剂剂量(0.01-0.04 g/50mL)和接触时间(10-60 分钟),优化了铅离子的最大生物吸附容量。结果显示在 pH 值为 6、生物吸附剂用量为 0.03 克、温度为 27⁰C、接触时间为 60 分钟的条件下,最大去除率约为 71%。Freundlich 吸附等温线和伪一阶动力学模型最适合铅离子的生物吸附,在最佳吸附时间 60 分钟时,最大吸附容量为 125 mgg-1。结论研究结果表明,基于乔木树皮的生物吸附剂可能是去除水环境中铅离子的一种廉价且环保的方法。
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引用次数: 0
Insecticidal Activity of Different Doses of Acorus calamus Essential Oil against Sitophilus oryzae 不同剂量的石菖蒲精油对镰刀菌的杀虫活性
Pub Date : 2024-05-24 DOI: 10.9734/jsrr/2024/v30i62084
M. A. Sheikh, M. Yaqoob, F. Wani, T. Bhat, Mudasir Gani, Mohammad Anwar Bhat
The toxicity of different doses (3, 4, 5, 6 and 7 percent) of Acorus calamus essential oil, against insect pest Sitophilus oryzae were evaluated in the laboratory of Division of Entomology, FoA, Wadura, SKUAST-Kashmir during the year 2022. The various concentrations of Acorus calamus essential oil had significant effect on mortality of Sitophilus Oryzae. The highest mortality of 74.27 percent was recorded in 70 µl concentration of Acorus calamus essential oil on 12 Hours After Treatment (HAT) followed by 60 (71.01%), 50 (67.15%) and 40 (39.11%) µl concentration while untreated control recorded 5.13 percent mortality respectively. However, on 24 HAT the cumulative mortality increased to 76.35 in 70µl, 74.11 in 60 and 50 µl, 43.01 in 40 µl concentration. On 72 HAT the concentrations of 70, 60 and 50 µl recorded 94.11, 91.27 and 90.11 percent mortality respectively, while only 7.05 percent mortality was recorded in untreated control.
2022 年,在克什米尔 SKUAST 瓦杜拉 FoA 昆虫学分部的实验室里,对不同剂量(3%、4%、5%、6% 和 7%)的石菖蒲精油对害虫嗜坐螨的毒性进行了评估。不同浓度的石菖蒲精油对稻田害虫的死亡率有显著影响。在处理后 12 小时(HAT),70 µl 浓度的石菖蒲精油的死亡率最高,达到 74.27%,其次是 60 µl 浓度(71.01%)、50 µl 浓度(67.15%)和 40 µl 浓度(39.11%),而未经处理的对照组死亡率仅为 5.13%。然而,在 24 小时孵化期,70 微升浓度的累积死亡率增至 76.35%,60 和 50 微升浓度的累积死亡率增至 74.11%,40 微升浓度的累积死亡率增至 43.01%。在 72 小时孵化期,70、60 和 50 微升的浓度分别记录了 94.11%、91.27% 和 90.11%的死亡率,而未经处理的对照组仅记录了 7.05%的死亡率。
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引用次数: 0
Effect of Different Spacing Levels on Yield and Yield Contributing Characters in Cocoa (Theobroma cacao L.) 不同行距对可可(可可豆)产量和产量贡献特征的影响
Pub Date : 2024-05-24 DOI: 10.9734/jsrr/2024/v30i62085
Jegadeeswari. V, K. R. Vijayalatha, K. Padmadevi, M. Mohanalakshmi, G. Sidhdharth, J. Kalaivani
The experiment titled "Effect of different spacing levels on yield and yield contributing characters in cocoa" was conducted at the Coconut Farm of the Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore. Utilizing a Randomized Block Design (RBD) with eight treatments replicated three times, the study aimed to investigate the impact of spacing levels on cocoa yield traits. The treatments involved in the experiment included a double row of cocoa planted between two rows of coconut trees, with spacing configurations as follows: T1 (3m x 1.2m), T2 (3m x 2m), T3 (3m x 2.5m), and T4 (3m x 3m). Additionally, a single row of cocoa between two coconut rows was examined, with spacings represented by T5 (1.5m), T6 (2m), T7 (2.5m), and T8 (3m). Results revealed significant variations among spacing treatments, with cocoa at 3m spacing demonstrating the highest productivity, yielding 43.47 pods per tree and 1021.48 g of dry beans per tree. Noteworthy findings included T1 (3m x 1.2m) exhibiting the longest pods (16.64 cm), T6 (2m) the widest pod girth (21.67 cm), and T8 (3m) producing the heaviest pods (204.50 g). Additionally, T6 yielded the highest total beans per pod (37.34) and dry bean weight (25.44 g), T4 had the heaviest single fresh bean (1.63 g), and T2 demonstrated the highest single dry bean weight (0.70 g). These findings offer valuable insights for optimizing cocoa cultivation practices, emphasizing the importance of spacing configurations in maximizing yield and bean characteristics.
题为 "不同间距水平对可可产量和产量贡献特征的影响 "的实验在哥印拜陀泰米尔纳德邦农业大学园艺学院和研究所的椰子农场进行。该研究采用随机区组设计(RBD),八个处理重复三次,旨在研究间距水平对可可产量特征的影响。试验涉及的处理包括在两行椰子树之间种植双行可可,间距配置如下:T1(3 米 x 1.2 米)、T2(3 米 x 2 米)、T3(3 米 x 2.5 米)和 T4(3 米 x 3 米)。此外,还研究了两行椰子之间的单行可可,间距分别为 T5(1.5 米)、T6(2 米)、T7(2.5 米)和 T8(3 米)。结果显示,不同间距处理的产量差异很大,3 米间距的可可产量最高,每棵树结荚 43.47 个,干豆 1021.48 克。值得一提的是,T1(3 米 x 1.2 米)的豆荚最长(16.64 厘米),T6(2 米)的豆荚周长最宽(21.67 厘米),T8(3 米)的豆荚最重(204.50 克)。此外,T6 每荚总豆量(37.34)和干豆重量(25.44 克)最高,T4 单粒鲜豆最重(1.63 克),T2 单粒干豆重量(0.70 克)最高。这些发现为优化可可种植实践提供了宝贵的见解,强调了间距配置在最大限度提高产量和可可豆特性方面的重要性。
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引用次数: 0
Original Research Article Genetic Diversity and Association Analysis for Agronomic and Yield Related Traits in Interspecific Progenies of Pigeonpea (Cajanus cajan) 原创研究文章 豌豆(Cajanus cajan)种间后代农艺性状和产量相关性状的遗传多样性与关联分析
Pub Date : 2024-05-24 DOI: 10.9734/jsrr/2024/v30i62086
M. Hk, .. Amaresh, Aswini Nunavath, Bajpai Gc, Verma Sk, Gopalareddy K, Maruthi Rt, Sreenivas V, Chandana Behera
The limited genetic diversity in existing cultivars emphasizes the need for incorporating potential exotics and wild relatives in breeding programs. This study focussed on assessing genetic variation and correlations among yield traits in F8 and F9 progenies resulting from nine interspecific crosses, involving three cultivated parental lines and three wild species. Results indicate significant genotypic variation for all traits studied. Phenotypic and genotypic coefficients of variation varied across agronomic parameters. Heritability estimates ranged from 22.61% (Primary branches plant-1) to 89.35% (Days to maturity) for different traits, emphasizing the potential for selection in breeding programs. Positive correlations were observed among various traits in both progeny generations, providing insights into the interplay of genetic factors influencing pigeon pea traits. The cluster analysis revealed that, 54 interspecific cross derived lines with three parents were grouped into four clusters, indicating the greater diversity among the lines for the selection of yield related traits for pigeonpea crop improvement.
现有栽培品种的遗传多样性有限,因此需要将潜在的外来物种和野生近缘种纳入育种计划。本研究的重点是评估 9 个种间杂交后代 F8 和 F9 产量性状的遗传变异和相关性,涉及 3 个栽培亲本品系和 3 个野生物种。研究结果表明,所有研究性状的基因型差异都很大。不同农艺参数的表型和基因型变异系数各不相同。不同性状的遗传力估计值从 22.61%(初生分枝-1)到 89.35%(成熟天数)不等,强调了育种计划中的选择潜力。在两代后代中观察到各种性状之间存在正相关,这有助于深入了解影响鸽子豆性状的遗传因素之间的相互作用。聚类分析显示,有三个亲本的 54 个种间杂交衍生品系被分为四个聚类,这表明品系之间存在更大的多样性,可用于鸽子豆作物改良中产量相关性状的选择。
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引用次数: 0
Application of Precision Farming in Horticulture: A Comprehensive Review 园艺中的精准农业应用:全面回顾
Pub Date : 2024-05-23 DOI: 10.9734/jsrr/2024/v30i62083
Shuvadeep Halder, Shampa Purkaystha, Tushar Ghosh, Subhash Chandra Ghosh, Abid Hayat
With the ever-increasing global population and diverse challenges caused by climate change, horticultural productivity must increase in an ecofriendly and sustainable way. Precision farming, also known as precision agriculture may play an important role to improve this situation by a data-driven farm management system that aims to identify, analyze, and manage variability within fields for optimal profitability, sustainability, and land resource protection. It involves applying the right treatments at the right time and location within a field. In horticulture, precision farming plays a crucial role in resource-efficient management as well as reducing significant labour requirement, including techniques like fertigation, greenhouse cultivation, soil and leaf nutrient-based fertilizer management, and more. This comprehensive review paper explores the application of precision farming in horticulture, emphasizing its potential impact on crop management, environmental health, and economic sustainability.
随着全球人口的不断增长和气候变化带来的各种挑战,必须以生态友好和可持续的方式提高园艺生产率。精准农业(又称精准农业)是一种数据驱动的农场管理系统,旨在识别、分析和管理田间的可变性,以实现最佳的盈利能力、可持续性和土地资源保护,从而在改善这种状况方面发挥重要作用。它涉及在田间适当的时间和地点进行适当的处理。在园艺领域,精准农业在资源高效管理和减少大量劳动力需求方面发挥着至关重要的作用,包括施肥、温室栽培、基于土壤和叶片养分的肥料管理等技术。这篇综合综述论文探讨了精准农业在园艺中的应用,强调了其对作物管理、环境健康和经济可持续性的潜在影响。
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引用次数: 0
Bacillus spp. – A Potential Probiotic 芽孢杆菌--一种潜在的益生菌
Pub Date : 2024-05-22 DOI: 10.9734/jsrr/2024/v30i62082
Vandana K V, .. Harinivenugopal, Shashi Kumar C S, Malashree L, S. B. G., R. B
Aim: To determine the probiotic characteristics for selected Bacillus spp. Study Design: The study was aimed for evaluating the in vitro probiotic properties such as acid and bile tolerance, adhesion ability and antibacterial activity of four strains of Bacillus spp. such as Bacillus cereus, Bacillus subtilis, Bacillus tropicus and Bacillus licheniformis. Place and Duration of Study: Department of Dairy Microbiology, Dairy Science College, Hebbal, Bengaluru, Karnataka, India, study conducted between June 2023 to April 2024. Methodology: Probiotic nature was evaluated by determining the percentage survivability of four strains of Bacillus spp. at pH 2.0 and 0.3 % ox bile concentration. Percentage adhesion was determined using xylene hydrocarbon and antibacterial activity of four Bacillus spp. against test organisms like Escherichia coli, Salmonella spp. and Staphylococcus aureus was tested using agar well diffusion method. Results: In this present study four strains of Bacillus spp. that is B. cereus, B. subtilis, B. tropicus and B. licheniformis exhibited good probiotic characteristics such as acid, bile tolerance, adhesion ability and antibacterial activity against test organisms. Among all the strains B. subtilis have exhibited highest survival rate of 88.01 and 74.86 % at pH 2.0 and 0.3% ox bile concentration respectively, whereas B. tropicus showed 14.5% adhesion ability to xylene hydrocarbon. Regarding antibacterial activity B. subtilis exhibited highest inhibitory zone of 7.1, 6.2 and 4.0 mm against E. coli, Salmonella spp. and Stap. aureus respectively. Conclusion: In conclusion, the results of present study suggested that B. subtilis showed good in vitro probiotic characteristics.
目的:确定选定芽孢杆菌属的益生特性。 研究设计:研究旨在评估四种芽孢杆菌属菌株(如蜡样芽孢杆菌、枯草芽孢杆菌、滋养芽孢杆菌和地衣芽孢杆菌)的体外益生特性,如耐酸性和耐胆汁性、粘附能力和抗菌活性。研究地点和时间:研究时间:2023 年 6 月至 2024 年 4 月。研究方法:在 pH 值为 2.0 和牛胆汁浓度为 0.3 % 的条件下,通过测定四株芽孢杆菌的存活率来评估益生菌的性质。使用二甲苯碳氢化合物测定粘附百分比,并使用琼脂井扩散法测试四种芽孢杆菌对大肠杆菌、沙门氏菌属和金黄色葡萄球菌等试验生物的抗菌活性。结果:在本研究中,四种芽孢杆菌属菌株,即蜡样芽孢杆菌(B. cereus)、枯草芽孢杆菌(B. subtilis)、滋养芽孢杆菌(B. tropicus)和地衣芽孢杆菌(B. licheniformis)表现出良好的益生特性,如耐酸性、耐胆汁性、粘附能力和对试验生物的抗菌活性。在所有菌株中,枯草芽孢杆菌在 pH 值为 2.0 和牛胆汁浓度为 0.3% 时的存活率最高,分别为 88.01% 和 74.86%,而热带芽孢杆菌对二甲苯碳氢化合物的粘附能力为 14.5%。在抗菌活性方面,枯草芽孢杆菌对大肠杆菌、沙门氏菌属和金黄色葡萄球菌的最大抑菌区分别为 7.1、6.2 和 4.0 毫米。结论总之,本研究结果表明,枯草杆菌具有良好的体外益生特性。
{"title":"Bacillus spp. – A Potential Probiotic","authors":"Vandana K V, .. Harinivenugopal, Shashi Kumar C S, Malashree L, S. B. G., R. B","doi":"10.9734/jsrr/2024/v30i62082","DOIUrl":"https://doi.org/10.9734/jsrr/2024/v30i62082","url":null,"abstract":"Aim: To determine the probiotic characteristics for selected Bacillus spp. \u0000Study Design: The study was aimed for evaluating the in vitro probiotic properties such as acid and bile tolerance, adhesion ability and antibacterial activity of four strains of Bacillus spp. such as Bacillus cereus, Bacillus subtilis, Bacillus tropicus and Bacillus licheniformis. \u0000Place and Duration of Study: Department of Dairy Microbiology, Dairy Science College, Hebbal, Bengaluru, Karnataka, India, study conducted between June 2023 to April 2024. \u0000Methodology: Probiotic nature was evaluated by determining the percentage survivability of four strains of Bacillus spp. at pH 2.0 and 0.3 % ox bile concentration. Percentage adhesion was determined using xylene hydrocarbon and antibacterial activity of four Bacillus spp. against test organisms like Escherichia coli, Salmonella spp. and Staphylococcus aureus was tested using agar well diffusion method. \u0000Results: In this present study four strains of Bacillus spp. that is B. cereus, B. subtilis, B. tropicus and B. licheniformis exhibited good probiotic characteristics such as acid, bile tolerance, adhesion ability and antibacterial activity against test organisms. Among all the strains B. subtilis have exhibited highest survival rate of 88.01 and 74.86 % at pH 2.0 and 0.3% ox bile concentration respectively, whereas B. tropicus showed 14.5% adhesion ability to xylene hydrocarbon. Regarding antibacterial activity B. subtilis exhibited highest inhibitory zone of 7.1, 6.2 and 4.0 mm against E. coli, Salmonella spp. and Stap. aureus respectively. \u0000Conclusion: In conclusion, the results of present study suggested that B. subtilis showed good in vitro probiotic characteristics.","PeriodicalId":16985,"journal":{"name":"Journal of Scientific Research and Reports","volume":"35 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141109336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of Zinc and Humic Acid Application on Growth Parameter, Yield and Yield Components and Quality Traits of Black Gram (Vigna mungo L.) 施锌和腐植酸对黑糯米(Vigna mungo L.)生长参数、产量和产量成分及品质性状的影响
Pub Date : 2024-05-21 DOI: 10.9734/jsrr/2024/v30i62080
Mane S. S., Ugile S. K., Chaudhari A. A., Handebar B. A.
A field experiment was conducted in kharif season during 2021-22 on the field at village Ap-Sonalagi Tq-Jath Dist- Sangli of Maharashtra through Department of Soil Science and Agricultural Chemistry College of Agriculture, Badnapur, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani, with objectives, to study the influence of zinc and humic acid application on growth parameter, yield and yield components and quality traits of black gram (Vigna mungo L.) The field trial was conducted in Randomized Block Design with five treatments (T1): RDF (25:50:00 N, P2O5, K2O kg ha-1), (T2): RDF+ ZnSO4 @ 25 kg ha-¹, (T3): RDF+ ZnSO4 @ 25 kg ha-¹ + Humic Acid @ 5 kg ha-¹, (T4): RDF+ ZnSO4 @ 25 kg ha-¹ + Humic Acid @ 10 kg ha-¹, (T5) RDF+ ZnSO4 @ 25 kg ha-¹ + Humic Acid @ 15 kg ha-¹ with four replications.According to the results obtained by the field investigation clearly indicated that the significantly higher plant height (44.50 cm), maximum number of branches plant-1 (9.10), number of pods plant-1 (26.15) and grain and straw yield (1305.00 and 2190.00 kg ha-1) at harvest stage were observed in treatment (T5) RDF+ ZnSO4 @ 25 kg ha-¹ + Humic Acid @ 15 kg ha-¹. In grain quality the results revealed that higher protein content (22.15%) and test weight (43.05 g) was also found in the same treatment i.e., (T5) RDF+ ZnSO4 @ 25 kg ha-¹ + Humic Acid @ 15 kg ha- ¹ (22.15%).
马哈拉施特拉邦桑利县巴德纳普尔农业学院土壤科学和农业化学系在 2021-22 年的收获季节,在马哈拉施特拉邦桑利县巴德纳普尔农业学院 Ap-Sonalagi Tq-Jath 村的田间进行了一项田间试验,目的是研究锌和腐植酸的施用对黑禾苗(Vigna mungo L.)的生长参数、产量、产量成分和品质性状的影响。田间试验采用随机区组设计,共设五个处理(T1):RDF (25:50:00 N, P2O5, K2O kg ha-1), (T2):RDF+ ZnSO4 @ 25 kg ha-¹,(T3):RDF+ ZnSO4 @ 25 kg ha-¹+腐植酸 @ 5 kg ha-¹,(T4):田间调查的结果清楚地表明,RDF+ ZnSO4 @ 25 kg ha-¹ + 腐植酸 @ 10 kg ha-¹,(T5)RDF+ ZnSO4 @ 25 kg ha-¹ + 腐植酸 @ 15 kg ha-¹,四次重复。田间调查结果表明,RDF + ZnSO4 @ 25 kg ha-¹ + Humic Acid @ 15 kg ha-¹ 处理(T5)的株高(44.50 厘米)、最大植株分枝数(9.10)、植株荚数(26.15)、收获期谷物和秸秆产量(1305.00 和 2190.00 千克/公顷-1)均明显高于其他处理(T6)。在谷物质量方面,结果显示,相同处理(T5)即 RDF+ ZnSO4 @ 25 kg ha-¹ + Humic Acid @ 15 kg ha-¹ (22.15%)的蛋白质含量(22.15%)和测试重量(43.05 g)也较高。
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引用次数: 0
Investigation of the Ergonomics and Workload of Farm Women during in Planting and Weeding Operations 农妇在播种和除草作业中的人体工学和工作量调查
Pub Date : 2024-05-21 DOI: 10.9734/jsrr/2024/v30i62079
Naveendra Kumar Patel, Shubham Singh, Utkarsh Dwivedi
The study was done to determine the anthropometric, physical, physiological, and workload characteristics of women operators (N=7) during manual sowing and weeding activities for several medicinal plants. The planting and weeding activities were done using a shovel and a hand hoe. Anthropometric measurements were taken for women aged 20 to 50. The physiological fluctuations in chosen participants' energy and strength during different agricultural operations, as well as the implications in body part discomfort score, were evaluated. The average resting and working heart rates, EER, OCR, and BPDS are all measured to assess physiological characteristics. Female responders reported an average resting heart rate of 78.91 bpm for weeding and 81.46 bpm for planting. Planting and weeding had an average working heart rate of 100.85 and 97.14 (bpm, respectively). The average EER and OCR values for the relevant procedures were 6.35 and 5.31 (kJ/min) and 0.52 and 0.45 (l/min), respectively. The BPDS levels of the chosen participants were 19.5 and 21.4, respectively. The data imply that the workers were more compatible and comfortable when weeding using a hand hoe.
本研究旨在确定几种药用植物的人工播种和除草活动中女性操作员(7 人)的人体测量、身体、生理和工作量特征。播种和除草活动使用铲子和手锄进行。对 20 至 50 岁的女性进行了人体测量。评估了所选参与者在不同农业操作过程中体力和精力的生理波动,以及身体部位不适评分的影响。测量平均静息心率和工作心率、EER、OCR 和 BPDS 都是为了评估生理特征。女性受访者称,除草时的平均静息心率为 78.91 bpm,播种时的平均静息心率为 81.46 bpm。种植和除草的平均工作心率分别为 100.85 和 97.14(bpm)。相关程序的 EER 和 OCR 平均值分别为 6.35 和 5.31(千焦/分钟)以及 0.52 和 0.45(升/分钟)。所选参与者的 BPDS 水平分别为 19.5 和 21.4。这些数据表明,工人们在使用手锄除草时更加协调和舒适。
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引用次数: 0
Comparative Analysis of Open v/s Protected Cut Flower Rose Farming in Karnataka, India 印度卡纳塔克邦开放式与受保护切花玫瑰种植比较分析
Pub Date : 2024-05-21 DOI: 10.9734/jsrr/2024/v30i62081
G. M. Gaddi, S. K. M., Srinivasulu G. B, .. Pavithra, C. G. Yadava, G. M.D., .. Moulasab, Chandan K.
In India, the floriculture industry is the second largest in the world, trailing only China. The total area under flower crops during 2023-24 was 285,000 hectares; production of loose flowers was estimated to be 21.52 lakh metric tons, and cut-flowers were 645 metric tons. Both fresh and dried cut flowers lead floriculture exports from India. (NHB, 2023-24). Among the plethora of flowers, the rose stands out as a plant with hundreds of species and thousands of cultivars, many of which are native to Asia. These roses are not only extensively used in commercial perfumery and pharmaceuticals but also as commercial cut flower crops. In the current era of commercialization, rose cultivation has expanded to both protected and open-field methods. Therefore, this study was undertaken to analyze the Comparative Analysis of Open vs. Protected Cut Flower Rose Farming in Karnataka. The study was based on primary data collected from 40 farmers each from both the districts, namely Chikkaballapura and Bengaluru Rural. The data were analysed using cost and return analysis and capital budgeting techniques. The results obtained from this study indicated that the cultivation of roses was profitable under open and protected fields. But comparatively, the rate of return obtained from protected cultivation was higher, i.e., 54 per cent with a 1.58 B:C ratio, than open-field cultivation, i.e., 47 per cent with a 1.21 B:C ratio. Therefore, efforts should be made to educate the traditional rose farmers to adopt a better package of practices followed by protected farms and encourage them by providing cheaper institutional credit and subsidies.
在印度,花卉产业是世界第二大产业,仅次于中国。2023-24 年期间,花卉种植总面积为 28.5 万公顷,散花产量约为 2152 万公吨,切花产量为 645 公吨。鲜切花和干切花是印度花卉出口的主要产品。(国家卫生局,2023-24 年)。在种类繁多的花卉中,玫瑰最为突出,有数百个品种和数千个栽培品种,其中许多原产于亚洲。这些玫瑰不仅被广泛用于商业香水和制药,还被用作商业切花作物。在当前的商业化时代,玫瑰种植已扩展到保护地和露地两种方式。因此,本研究对卡纳塔克邦露地与保护地切花玫瑰种植进行了比较分析。研究基于从两个地区(奇卡巴拉普拉和班加罗尔农村)各收集到的 40 位农民的原始数据。采用成本和收益分析以及资本预算技术对数据进行了分析。研究结果表明,在露地和保护地种植玫瑰都有利可图。但相对而言,保护地种植的收益率(即 54%,1.58 的 B:C 比率)高于露地栽培(即 47%,1.21 的 B:C 比率)。因此,应努力教育传统玫瑰种植农采用保护地农场所遵循的更好的一揽子做法,并通过提供更便宜的机构信贷和补贴来鼓励他们。
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引用次数: 0
Long Memory Time-series Model (ARFIMA) Based Modelling of Jute Prices in the Samsi Market of Malda District, West Bengal 基于长记忆时间序列模型(ARFIMA)的西孟加拉邦马尔达县 Samsi 市场黄麻价格模型
Pub Date : 2024-05-21 DOI: 10.9734/jsrr/2024/v30i62078
Chowa Ram Sahu, S. Basak, Debkishore Gupta
The objective of this paper is modeling and forecasting the weekly jute prices of Samsi market in the Malda district of West Bengal in the presence of long memory process. The long memory behavior of series is investigated by the ACF plot and Hurst R/S analysis. A fractionally integrated autoregressive moving-average (ARssFIMA) model is fitted using 668 weekly data (January 2009-November 2022). This study shows the efficiencies of the Hurst exponent, GPH, Smoothed periodogram, Local Whittle, and Wavelet methods used to estimate the fractional difference parameter in the ARFIMA model. Furthermore, we compared the forecasting abilities of the ARFIMA and ARIMA models. The results show that long memory is present in the jute price series. The models selected according to each method are ARFIMA (3,0.348,0), ARFIMA (3,0.291,1), ARFIMA (2,0.487,0), ARFIMA (3,0.461,0), ARFIMA (2,0.311,0), and ARIMA (2,1,1) on the basis of minimum AIC and BIC using 534 in-sample data. Finally, the wavelet method based ARFIMA (2,0.311,0) model is found to be the best optimal model in terms of MAE, RMSE, and MAPE criteria using 134 out-of-sample data. A comparative study indicates that the forecasting performance of the ARFIMA model is strongly better than that of the ARIMA model in this regard.
本文旨在对存在长记忆过程的西孟加拉邦马尔达地区 Samsi 市场每周黄麻价格进行建模和预测。通过 ACF 图和 Hurst R/S 分析研究了序列的长记忆行为。使用 668 个周数据(2009 年 1 月至 2022 年 11 月)拟合了分数积分自回归移动平均(ARssFIMA)模型。本研究显示了赫斯特指数法、GPH 法、平滑周期图法、局部惠特尔法和小波法用于估计 ARFIMA 模型中分数差参数的效率。此外,我们还比较了 ARFIMA 模型和 ARIMA 模型的预测能力。结果表明,黄麻价格序列中存在长记忆。利用 534 个样本数据,在 AIC 和 BIC 最小的基础上,根据每种方法选出的模型分别为 ARFIMA (3,0.348,0)、ARFIMA (3,0.291,1)、ARFIMA (2,0.487,0)、ARFIMA (3,0.461,0)、ARFIMA (2,0.311,0) 和 ARIMA (2,1,1)。最后,使用 134 个样本外数据,发现基于小波方法的 ARFIMA (2,0.311,0) 模型在 MAE、RMSE 和 MAPE 标准方面是最佳模型。比较研究表明,在这方面,ARFIMA 模型的预测性能明显优于 ARIMA 模型。
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