American Journal of Agricultural and Biological Sciences最新文献

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Complexity and the Ecological Impacts of Tourism on Wetlands Ecosystem and Rural Sustainability: A Case Study of Zrebar Wetlands 旅游对湿地生态系统和农村可持续发展的复杂性和生态影响——以兹里巴湿地为例

American Journal of Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.3844/ajabssp.2023.22.38

Sima Saadi, Sima Saadi, Hosein Karimzadeh, Akbar Rahimi

{"title":"Complexity and the Ecological Impacts of Tourism on Wetlands Ecosystem and Rural Sustainability: A Case Study of Zrebar Wetlands","authors":"Sima Saadi, Sima Saadi, Hosein Karimzadeh, Akbar Rahimi","doi":"10.3844/ajabssp.2023.22.38","DOIUrl":"https://doi.org/10.3844/ajabssp.2023.22.38","url":null,"abstract":"Due to its natural and ecological qualities, rural tourism has drawn greater attention in recent decades. The development of rural tourism provides a variety of advantages that influence the environment and local resources. Therefore, this study looks at how tourism affects the sustainability of the Zrebar wetland, an urban-rural area in the west of Iran, and the wetland ecosystem. In terms of the objectives of the study and the data collection strategy utilized to achieve them, this study is descriptive analytical. The Structural Equation Modeling (SEM) created with Analysis of Moment Structures (AMoS) software and SPSS version 22 were both used for the statistical analysis. Furthermore, the probability level of (P: 0.000) is optimum to use and after that, the spatial analysis was carried out in ArcGIS using the Kriging interpolation method. The findings imply that, with a factor load of 1.13, tourism has significantly contributed to environmental degradation. In order to draw tourists to the area around Zrebar lake, there has been an increase in villa development, dispersion of the community, significant construction, and extension of farms and family gardens. A variety of both beneficial and negative effects is brought about by the growth of tourism in Marivan city, which is three kilometers from the lake. The Zrebar wetland is the most affected and the rural communities close to it suffer the most. Due to their remoteness, the villages furthest from the marsh experience less hardship. Therefore, despite its good benefits, particularly in economic growth, the increase of tourism in this area has put the ecological value and biodiversity of Zrebar wetland at threat. In the end, it can have repercussions for rural communities.","PeriodicalId":495758,"journal":{"name":"American Journal of Agricultural and Biological Sciences","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135052270","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

Working Process Analysis and Parameter Optimization of Millet Hill-Drop Seed Metering Device 谷子落粒测种装置工作过程分析及参数优化

American Journal of Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.3844/ajabssp.2023.39.47

Tao Chen, Shujuan Yi, Yifei Li

{"title":"Working Process Analysis and Parameter Optimization of Millet Hill-Drop Seed Metering Device","authors":"Tao Chen, Shujuan Yi, Yifei Li","doi":"10.3844/ajabssp.2023.39.47","DOIUrl":"https://doi.org/10.3844/ajabssp.2023.39.47","url":null,"abstract":"Due to the small size, light weight, and impurities of millet, the existing seeders have poor quality when sowing millet, this study analyzed the working process of the pneumatic-mechanical combined seed metering device, established the equations of seed movement in the seed filling zone, seed cleaning up zone, seed carrying zone and seed dropping zone by dynamic theory. The theoretical factors affecting the sowing quality were clarified in order to improve the sowing effect of the millet hole sower. Vacuum degree, suction hole diameter, and hole wheel rotational speed served as the test factors, and qualifying rate, reseeding rate, and missing rate served as the evaluation indices in a three-factor, three-level orthogonal test. Better parameter combination is obtained through range and variance analysis: Vacuum degree is 2.0 kPa, suction hole diameter is 1.0 mm and rotating speed of hole wheel is 20 r/min. Verification tests were performed to ensure that the pass rate is 93.9%, reseeding rate is 3.1% and the missing rate is 3.0%, meeting the criteria for millet hole sowing. The results of this study can be promoted and applied in the research and development of millet hole sowing seeders.","PeriodicalId":495758,"journal":{"name":"American Journal of Agricultural and Biological Sciences","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135052287","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 Drought Stress on Growth and Yield of Soybean (Glycine max L.) Genotypes in Northern Ghana 干旱胁迫对大豆生长和产量的影响加纳北部的基因型

American Journal of Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.3844/ajabssp.2023.13.21

Isaac Kwahene Addai, Alhassan Bawa, Maganoba Charles

{"title":"Influence of Drought Stress on Growth and Yield of Soybean (<i>Glycine max</i> L.) Genotypes in Northern Ghana","authors":"Isaac Kwahene Addai, Alhassan Bawa, Maganoba Charles","doi":"10.3844/ajabssp.2023.13.21","DOIUrl":"https://doi.org/10.3844/ajabssp.2023.13.21","url":null,"abstract":"Studies on induced mutation were conducted and the results indicated that stable, but desirable soybean mutant genotypes with improved agronomic traits have been produced. A series of evaluations of these mutant genotypes had earlier on been carried out and high-yielding ones such as 150, 200, 250, and 300 Gy have been identified. In the present study, the above genotypes were planted together with an improved variety, Jenguma (standard check), to evaluate them for drought tolerance. Pot and field experiments were conducted in the dry and wet seasons of the year 2020, using factorial experiments in RCBD at Nyankpala in the Guinea Savannah agroecological zone of Ghana. In the pot experiment, 150, 120, 90, and 60 mL/day of water was applied, whilst two different planting date regimes were involved in the field study. Data on growth, yield parameters, as well as water use efficiency were taken for statistical analysis using Genstat statistical package edition 12. From the two experiments, the 150, 200, and 250 Gy mutants performed better (relative to 300 and Jenguma) in terms of grain yield, yield components, and growth parameters. These mutants also performed comparatively better in terms of reduced pod shattering. From the study, the mutants 150, 200, and 250 Gy were found to be tolerant to drought.","PeriodicalId":495758,"journal":{"name":"American Journal of Agricultural and Biological Sciences","volume":"152 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135052277","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