NJAS: Impact in Agricultural and Life Sciences最新文献_第3页

Economic feasibility of glasshouse tomato production in China — A bio-economic stochastic modelling approach 中国温室番茄生产的经济可行性——生物经济随机建模方法

NJAS: Impact in Agricultural and Life Sciences Pub Date : 2022-11-16 DOI: 10.1080/27685241.2022.2135390

Xinyuan Min, J. Sok, A. Elings, A. Oude Lansink

{"title":"Economic feasibility of glasshouse tomato production in China — A bio-economic stochastic modelling approach","authors":"Xinyuan Min, J. Sok, A. Elings, A. Oude Lansink","doi":"10.1080/27685241.2022.2135390","DOIUrl":"https://doi.org/10.1080/27685241.2022.2135390","url":null,"abstract":"ABSTRACT Glasshouse investments are booming in China, even little is known about the economic feasibilities and uncertainties of such investments. This study employed a bio-economic model to assess the economic feasibility and uncertainties of an investment in a Venlo-type glasshouse for cherry tomato production in four regions in China: Jinshan, Langfang, Weifang, and Pingliang, with different climate and market conditions. A bio-physical model for tomato yield and energy use simulation was calibrated with the climate and production data from 2019 to 2020 of a commercial glasshouse in Shanghai, China. The average yield and energy use for each region were simulated with the temperature set points provided by a grower and 30-year climate data. The distributions of the Net Present Values (NPVs) were determined using Monte Carlo simulation which addressed uncertainty due to stochastic seasonal tomato and natural gas prices. The economic outcome of tomato glasshouse investment varies across regions, with a mean NPV ranging from −957.8 ¥ m−2 for Weifang, to 477.0 ¥ m−2 for Pingliang. A sensitivity analysis suggests that variations in natural gas prices have larger impacts on the net cash flow than tomato prices. This study contributes to the research on glasshouse modelling by introducing seasonality and uncertainties of prices in a bio-economic model of a glasshouse farm. The results of this study can inform investors of the economic outcomes and the risks of glasshouse investments. They can also aid Chinese local governments to design agricultural support policies that suit the regional climate and market conditions. Graphical abstract","PeriodicalId":211218,"journal":{"name":"NJAS: Impact in Agricultural and Life Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115177886","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: 1

Intra-annual variation in feed and milk composition in smallholder dairy farms in Kenya 肯尼亚小农奶牛场饲料和牛奶成分的年内变化

NJAS: Impact in Agricultural and Life Sciences Pub Date : 2022-10-20 DOI: 10.1080/27685241.2022.2135391

Ndungu S. Nyokabi, P. Luning, J. Phelan, J. Creemers, B. Lukuyu, B. Bebe, S. Oosting

{"title":"Intra-annual variation in feed and milk composition in smallholder dairy farms in Kenya","authors":"Ndungu S. Nyokabi, P. Luning, J. Phelan, J. Creemers, B. Lukuyu, B. Bebe, S. Oosting","doi":"10.1080/27685241.2022.2135391","DOIUrl":"https://doi.org/10.1080/27685241.2022.2135391","url":null,"abstract":"ABSTRACT This longitudinal study explored intra-annual variation in feed availability and the chemical composition of milk and feed resources at smallholder dairy farms in Nakuru county, Kenya. Feed and milk samples were collected for a full year, every last week of the month, from 43 purposively selected farms. Feed and milk samples were analysed for nutritional composition using near infrared spectroscopy (NIRS) and Ekomilk milk analyser, respectively. The main basal feeds were indigenous grasses, Napier grass, maize and bean stover and maize silage, which farmers supplemented with purchased commercial concentrates and/or purchased or homemade total mixed rations (TMR). Commercial concentrates had the highest crude protein (CP) content (17.4 ± 3.9)% dry matter (DM), while maize stover had the lowest (8.7 ± 3.3% DM). All the feeds had low metabolisable energy (ME) that ranged from 7.0 ± 0.8 (MJ/kg DM) megajoules per kilogram of dry matter (MJ/kg DM) for maize stover to 8.9 ± 0.8 for dairy meal. Only grasses showed significant seasonal variation in CP and NDF (P > 0.00). Milk physicochemical composition was within the range stipulated by the Kenya Bureau of Standards (KEBS). Milk physicochemical composition showed negligible seasonal variations to significantly affect milk processing, which suggests that farmers can cope with feed scarcity. Nevertheless, seasonal feed availability is a persistent challenge in smallholder dairy farms. There is a need to ensure sufficient feed availability throughout the year in smallholder dairy farms through feed conservation, feeding management and ration preparation to enable consistent milk production and physicochemical composition.","PeriodicalId":211218,"journal":{"name":"NJAS: Impact in Agricultural and Life Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116235804","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: 2

A farm compensation model to reduce the risk of pest spreading: An application for Xylella fastidiosa in Mediterranean agriculture 减少害虫传播风险的农场补偿模式:苛养木杆菌在地中海农业中的应用

NJAS: Impact in Agricultural and Life Sciences Pub Date : 2022-08-30 DOI: 10.1080/27685241.2022.2108732

J. Ribal, Inmaculada Marques-Perez, Marina Segura

{"title":"A farm compensation model to reduce the risk of pest spreading: An application for Xylella fastidiosa in Mediterranean agriculture","authors":"J. Ribal, Inmaculada Marques-Perez, Marina Segura","doi":"10.1080/27685241.2022.2108732","DOIUrl":"https://doi.org/10.1080/27685241.2022.2108732","url":null,"abstract":"ABSTRACT Eradication measures are used when a pest or pathogen invades a free area, the objective being to control its outbreak by eliminating or reducing its population levels in that area, which involves removing all infected plants. Xylella fastidiosa is one of the most notorious plant pathogens presently emerging in Europe. This bacterium is a pathogen of concern for many plants globally, and has a broad range of wild and cultivated hosts common in Europe. Given that there is no effective treatment to reduce the repercussions of this disease, its spread poses a severe risk to European agriculture. The EU has designed mandatory plant health measures for the purposes of implementing an eradication or containment strategy. Since an eradication strategy depends on the actions of farmers, it is vital to adopt measures that encourage behavior that helps reduce the risk of spread. In this paper, we have developed a field-scale economic analysis, which links production costs, revenue, agronomic factors, and mandatory protection measures, and allows us to estimate the losses caused over time by pests or pathogens at the farm level, and the age-dependent payments that farmers should receive. This way a confidence interval for fair compensation can be obtained. This compensation serves to design positive incentives for farmers to inform government authorities about the presence of bacteria on their farms and participate in eradication programmes. We apply our economic modelling to Xylella fastidiosa in vineyards, and on olive and citrus plants, in the Valencian Community of Spain in Europe.","PeriodicalId":211218,"journal":{"name":"NJAS: Impact in Agricultural and Life Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132931634","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: 1

Processed food dream or nightmare? Influential online sentiment coalitions 加工食品是梦还是噩梦?有影响力的网络情感联盟

NJAS: Impact in Agricultural and Life Sciences Pub Date : 2022-08-29 DOI: 10.1080/27685241.2022.2108731

E. Gommeh, K. Schroën, T. Metze

{"title":"Processed food dream or nightmare? Influential online sentiment coalitions","authors":"E. Gommeh, K. Schroën, T. Metze","doi":"10.1080/27685241.2022.2108731","DOIUrl":"https://doi.org/10.1080/27685241.2022.2108731","url":null,"abstract":"ABSTRACT The framing of processed foods by groups of positive, negative or balanced online actors expresses the public mood about processed food and at the same time influences public views and policy. In this paper, we studied the framing of processed food by online sentiment coalitions – groups of online actors that are united by their positive, negative, or balanced stance towards processed food. We innovatively integrated digital methods with textual and visual analyses of 164 webpages and 344 online visualizations published by a total of 89 actors, such as academics, food technologists, journalists, governmental actors, NGOs, industry actors, nutrition specialists. The analysis shows that the online “dream” coalition of processed food framed it in a way to convey the human aspects of food processing: processed food is understood as a way to improve human lives, and photographs of industrially processed food produced by humans show it is not as industrialized as often thought of. The online “nightmare” coalition of processed food framed it primarily as posing health threats and accompanied this with photographs of unhealthy but colourful foods. The balanced coalition gave a balanced description of the benefits and drawbacks of processed food and accompanied this frame with photographs emphasizing the difficulty in making food choices. Extending the knowledge about the ways sentiments about processed food are communicated online is essential as it provides important insights into people’s understanding of the notion of “processed food” and the meaning that is given to it by various online interpretive communities.","PeriodicalId":211218,"journal":{"name":"NJAS: Impact in Agricultural and Life Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121139520","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: 1

Eliciting Consumers’ Health Consciousness and Price-Related Determinants for Polyphenol‐Enriched Olive Oil 激发消费者对富含多酚橄榄油的健康意识和价格相关决定因素

NJAS: Impact in Agricultural and Life Sciences Pub Date : 2022-08-18 DOI: 10.1080/27685241.2022.2108733

Raffaele Zanchini, Giuseppe Di Vita, D. Spina, Anna Irene De Luca, M. D’Amico

{"title":"Eliciting Consumers’ Health Consciousness and Price-Related Determinants for Polyphenol‐Enriched Olive Oil","authors":"Raffaele Zanchini, Giuseppe Di Vita, D. Spina, Anna Irene De Luca, M. D’Amico","doi":"10.1080/27685241.2022.2108733","DOIUrl":"https://doi.org/10.1080/27685241.2022.2108733","url":null,"abstract":"ABSTRACT Several studies have evaluated consumer interest in olive oil as a functional food due to its multiple health benefits, but to date, no author has assessed consumers’ additional premium price for a differentiated product enriched with its own polyphenols. This paper aims to investigate which predictors are related to health consciousness by assessing the willingness to pay an additional premium price for olive oil with functional properties. In addition, the study assesses how self-perceived nutritional knowledge affects price levels and interest in olive oil characteristics. The survey was carried out in Italy and the statistical analyses were conducted in two stages: the first adopted an econometric approach to evaluate which variables are related to the additional premium price for the product while in the second stage, inferential statistics were performed to obtain information on the role of self-perceived nutritional knowledge. Based on these outcomes, the prominent role of extrinsic characteristics, such as Geographical Indications (GIs), local attributes and health nutritional information emerged, reaffirming the strong link with the territory and health concerns of modern olive oil consumers. Finally, high self-perceived nutritional knowledge respondents were aware of the antioxidant properties of olive oil and registered the highest price thresholds.","PeriodicalId":211218,"journal":{"name":"NJAS: Impact in Agricultural and Life Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130143415","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: 3

Residents’ and farmers’ perspectives on risks and benefits of intensive livestock farming 居民和农民对集约化畜牧业风险和收益的看法

NJAS: Impact in Agricultural and Life Sciences Pub Date : 2022-06-28 DOI: 10.1080/27685241.2022.2089601

V. Eijrond, L. Claassen, D. Timmermans

{"title":"Residents’ and farmers’ perspectives on risks and benefits of intensive livestock farming","authors":"V. Eijrond, L. Claassen, D. Timmermans","doi":"10.1080/27685241.2022.2089601","DOIUrl":"https://doi.org/10.1080/27685241.2022.2089601","url":null,"abstract":"ABSTRACT Currently, there is a societal debate in the Netherlands about the future of intensive livestock farming and the current risks for human health and the environment. These risks could be described as systemic risks, which call for a deliberative approach to risk governance, including risk communication. However, stakeholders often have different perspectives towards intensive livestock farming and related risks which pose a challenge for communication. To support two-way communication, it is essential to identify the perspectives of residents and farmers who are directly affected by livestock farming. Using the mental models approach, we explored the current perspectives of the risks and benefits towards intensive livestock farming, in particular, on human health. Interviews were held with in total 44 farmers, residents and other stakeholders. We found that residents tend to view intensive livestock farming from the perspective of the quality of the living environment, which may clarify their overall focus on the risks to their well-being, whereas farmers tend to view intensive livestock farming from the perspective of their livelihood, which explains their focus on the (economic) benefits of intensive livestock farming. For experts as well as policy-makers, it is important to acknowledge the differences in risk perception when giving information about epidemiological health risks and communicating about policy measures.","PeriodicalId":211218,"journal":{"name":"NJAS: Impact in Agricultural and Life Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130365840","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: 4

Advancing towards an understanding of the relationship between culture and agrobiodiversity. A case study in Mapuche territory, southern Chile 进一步了解文化与农业生物多样性之间的关系。智利南部马普切人领地的案例研究

NJAS: Impact in Agricultural and Life Sciences Pub Date : 2022-06-13 DOI: 10.1080/27685241.2022.2083987

F. Spirito, Lorena Vieli, René Montalba

{"title":"Advancing towards an understanding of the relationship between culture and agrobiodiversity. A case study in Mapuche territory, southern Chile","authors":"F. Spirito, Lorena Vieli, René Montalba","doi":"10.1080/27685241.2022.2083987","DOIUrl":"https://doi.org/10.1080/27685241.2022.2083987","url":null,"abstract":"ABSTRACT Biocultural diversity embraces the dynamic, place-based and complex relationship between biological and cultural diversity. Several studies describe a direct, positive relationship between biological and cultural diversity; however, this relationship is usually entwined within a particular socio-ecological context. We explored the relationship between cultural diversity and agrobiodiversity in smallholder farming systems in a rural landscape in south-central Chile considered as Indigenous Mapuche ancestral territory. We hypothesized a positive correlation between cultural diversity and agrobiodiversity in this context. We estimated three levels of agrobiodiversity: (i) subsystems (vegetable garden, orchard, chacra, annual crops and natural places), (ii) plant species and (iii) plant landraces. In our study area, smallholders form three distinctive groups based on their cultural origin: (i) Indigenous Mapuche, (ii) Chileans and (iii) foreigners. Using diversity indices, we explored patterns across 15 focal landscapes (3.14 km2). Contrary to our hypothesis, we found a negative correlation between cultural diversity and agrobiodiversity, as while Mapuche farms presented the highest agrobiodiversity and were dominant in most focal landscapes, Chilean and foreign-owned farms were mostly dominated by monocultures. This negative link highlights the need to further study this relationship considering different socio-ecological aspects from a historical perspective, as well as from a socio-political point of view. Understanding the complex interactions between culture and biodiversity could help us in facing current challenges such as biodiversity loss, cultural homogenization and reducing conventional agriculture impacts.","PeriodicalId":211218,"journal":{"name":"NJAS: Impact in Agricultural and Life Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122417212","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: 2

Digital twins in agri-food : Societal and ethical themes and questions for further research 农业食品中的数字孪生:社会和伦理主题以及进一步研究的问题

NJAS: Impact in Agricultural and Life Sciences Pub Date : 2021-01-01 DOI: 10.1080/27685241.2021.1989269

S. van der Burg, S. Kloppenburg, E. Kok, M. van der Voort

引用次数: 14

Tick-borne disease risks and livestock management: Farmer’s knowledge and practices in a Corsican valley (France) 蜱传疾病风险和牲畜管理:科西嘉山谷农民的知识和做法(法国)

NJAS: Impact in Agricultural and Life Sciences Pub Date : 2021-01-01 DOI: 10.1080/27685241.2021.1975977

Dernat Sylvain, Toffoletti Hugo, Charrier François, J. François

引用次数: 5

Managing the risks of artificial intelligence in agriculture 管理人工智能在农业中的风险

NJAS: Impact in Agricultural and Life Sciences Pub Date : 2021-01-01 DOI: 10.1080/27685241.2021.2008777

R. Sparrow, Mark Howard, C. Degeling

引用次数: 5