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Fungicide resistance and misinformation: A game theoretic approach 杀菌剂耐药性与错误信息:一种博弈论方法
IF 9 2区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-04-19 DOI: 10.1111/cjag.12334
Chelsea A. Pardini, Ana Espínola-Arredondo

Fungicide resistance is a serious problem for agriculture today. This analysis provides additional insight into the strategic behavior of farmers when their fungicide use generates a negative intertemporal production externality in the form of fungicide resistance. We find that when farmers encounter this type of externality, they choose fungicide levels that exacerbate fungicide resistance. We examine a compensation mechanism in which a farmer reduces fungicide use in exchange for a transfer. This mechanism reduces fungicide use; however, misinformation about the severity of fungicide resistance generates distortions. We find that one-sided misinformation could lead a farmer to choose socially optimal fungicide levels, which makes the compensation mechanism less necessary. In addition, we show that when both farmers are misinformed, the mechanism could lead farmers to choose fungicide levels below the socially optimal level depending on their pessimistic beliefs about the severity of fungicide resistance.

抗药性是当今农业面临的一个严重问题。当农民使用杀菌剂以杀菌剂抗性的形式产生负的跨期生产外部性时,这一分析为他们的战略行为提供了更多的见解。我们发现,当农民遇到这种外部性时,他们选择的杀菌剂水平会加剧杀菌剂的耐药性。我们研究了一种补偿机制,即农民减少杀菌剂的使用,以换取转让。这种机制减少了杀菌剂的使用;然而,关于杀菌剂耐药性严重性的错误信息会造成扭曲。我们发现,片面的错误信息可能会导致农民选择社会最优的杀菌剂水平,从而降低补偿机制的必要性。此外,我们还表明,当两位农民都被误导时,这种机制可能会导致农民根据他们对杀菌剂耐药性严重程度的悲观信念,选择低于社会最佳水平的杀菌剂水平。
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引用次数: 0
Induced innovation and spillover effects of US and Canadian research expenditures in Canadian agriculture 美国和加拿大农业研究支出的诱导创新和溢出效应
IF 9 2区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-04-12 DOI: 10.1111/cjag.12331
Qingsong Tian, Lukas Cechura, J. Stephen Clark, Yan Yu

This study examines the induced innovation hypothesis (IIH) from 1958 to 2015 for two Canadian agriculture regions: Central Canada (the provinces of Ontario and Quebec) and Western Canada (the provinces of Alberta, Saskatchewan and Manitoba). There is broadly consistent support for the IIH for Canadian agriculture, especially for Western Canadian agriculture. In addition, there is support for the notion that US, as well as Canadian, research expenditures are important to explain changes in the input ratio in Canadian agriculture in the long run. This indicates the existence of spillover effects from US agricultural research expenditures to Canadian agriculture.

本研究考察了1958年至2015年加拿大两个农业地区的诱导创新假说(IIH):加拿大中部(安大略省和魁北克省)和加拿大西部(阿尔伯塔省、萨斯喀彻温省和马尼托巴省)。IIH对加拿大农业,特别是对加拿大西部农业的支持得到了广泛的一致支持。此外,有人支持这样一种观点,即从长远来看,美国和加拿大的研究支出对于解释加拿大农业投入比的变化很重要。这表明美国农业研究支出对加拿大农业存在溢出效应。
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引用次数: 0
Access to credit and heterogeneous effects on agricultural technology adoption: Evidence from large rural surveys in Ethiopia 获得信贷和对农业技术采用的异质性影响:来自埃塞俄比亚大型农村调查的证据
IF 9 2区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-04-11 DOI: 10.1111/cjag.12329
Mekdim D. Regassa, Mohammed B. Degnet, Mequanint B. Melesse

Modern agricultural technologies hold huge potential for increasing productivity and reducing poverty in developing countries. However, adoption levels of these technologies have remained disappointingly low in Africa. This paper analyzes the effect of access to credit on the likelihood of adoption and use intensity of chemical fertilizers using data from large rural surveys in Ethiopia. Using a heteroscedasticity-based identification strategy to address the endogenous nature of access to credit, we find that access to credit has significant positive effects on adoption and intensity of use of chemical fertilizers. However, important heterogeneities are observed. Credit obtained from formal sources is more important for the intensity of use than for the decision to adopt chemical fertilizers. Credit taken with the primary purpose of financing agricultural inputs is more likely to promote adoption of chemical fertilizers than credit taken per se. Furthermore, reported credit effects are larger when estimated against the sample of credit-constrained non-users as compared with the pool of the whole sample of credit non-users. The results remain robust to several sensitivity analyses. Our results yield useful implications for the design, promotion, and targeting of credit services to leverage their effect on adoption of agricultural technologies.

现代农业技术在提高发展中国家生产力和减少贫困方面具有巨大潜力。然而,这些技术在非洲的采用率仍然低得令人失望。本文利用埃塞俄比亚大型农村调查的数据,分析了获得信贷对化肥采用可能性和使用强度的影响。使用基于异方差的识别策略来解决获得信贷的内生性质,我们发现获得信贷对化肥的采用和使用强度有显著的积极影响。然而,观察到了重要的异质性。从正规来源获得的信贷对使用强度比决定使用化肥更重要。以资助农业投入为主要目的的信贷比信贷本身更有可能促进化肥的使用。此外,与整个信贷非用户样本相比,根据信贷约束非用户样本估计报告的信贷影响更大。结果对几个敏感性分析仍然是稳健的。我们的研究结果对信贷服务的设计、推广和目标定位产生了有益的启示,以利用其对农业技术采用的影响。
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引用次数: 0
Access to credit and heterogeneous effects on agricultural technology adoption: Evidence from large rural surveys in Ethiopia 获得信贷和对农业技术采用的异质性影响:来自埃塞俄比亚大型农村调查的证据
IF 9 2区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-04-11 DOI: 10.22004/AG.ECON.304499
Mekdim Dereje Regassa, M. B. Degnet, M. Melesse
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引用次数: 3
Adoption des Politiques de Protection de l'Environnement et performance des Entreprises Camerounaises 采用环境保护政策和喀麦隆公司的业绩
IF 9 2区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-04-09 DOI: 10.1111/cjag.12330
Tsambou André Dumas, Fomba Kamga Benjamin

The objective of this paper is to evaluate the effect of the environmental protection policies of by Cameroonian firms on their performance. It uses the endogenous switching regression technique and propensity scores applied to micro-data from 639 firms in Cameroon. The results show that only 17% of firms adopt these measures, while on average 85% of firms produce solid, gaseous or liquid waste. The results also indicate that the adoption of these environmental protection policies increases operating costs while significantly improving the turnover and the performance of the productive capacity of the company. These increases are 39.11%, 58.6%, and 38.63% for operating costs, turnover and return on productive capacity of the company, respectively. However, firms can also suffer significant losses resulting from the non-adoption of environmental policies. In fact, firms that do not adopt environmental protection policies have their performance reduced by an average of 1.625 percentage points.

本文的目的是评估喀麦隆企业的环境保护政策对其绩效的影响。它使用内生转换回归技术和倾向得分,应用于喀麦隆639家公司的微观数据。结果显示,只有17%的公司采取了这些措施,而平均85%的公司产生固体、气体或液体废物。研究结果还表明,这些环保政策的采用增加了运营成本,同时显著提高了公司的营业额和生产能力。公司的运营成本、营业额和生产能力回报率分别增长了39.11%、58.6%和38.63%。然而,企业也可能因不采取环境政策而遭受重大损失。事实上,不采取环保政策的企业业绩平均下降1.625个百分点。
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引用次数: 1
Price determinants of bred heifers: Do reputations matter? 养殖小母牛的价格决定因素:声誉重要吗?
IF 9 2区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-03-31 DOI: 10.1111/cjag.12328
Allan F. Pinto, Brittney K. Goodrich, William Kelley, Max Runge

Replacement brood cows are among the most significant investments for cow-calf operations, thus crucial to profitability. Many cow-calf producers find it cost effective to purchase replacements from a reliable replacement heifer seller, though by doing so they increase risk of reproductive inefficiency due to unknown characteristics of the heifers. When important information about a product is missing to buyers, a seller can build a reputation over time that acts as signal for quality. Previous work has explored reputation effects in feeder cattle markets, but to our knowledge we are the first to explore reputation effects in bred replacement cattle markets. Using data from an annual replacement heifer sale, we analyze the values of heifer characteristics and test for premiums from reputation development. After controlling for reproductive practices, breed, and other characteristics, we find reputation does not play the role that Shapiro theorized. In this sale, the lot order is strategically chosen and may indicate bred heifer quality to buyers, replacing the need for reputation as a signal. This study highlights the importance of quality signals and regional preferences in bred replacement cattle marketing and lays the empirical groundwork for future studies to test Shapiro's theory.

替代育婴奶牛是小牛运营中最重要的投资之一,因此对盈利能力至关重要。许多小牛生产商发现,从可靠的替代小母牛销售商那里购买替代品具有成本效益,尽管这样做会增加由于小母牛的未知特性而导致繁殖效率低下的风险。当买家缺少有关产品的重要信息时,卖家可以随着时间的推移建立声誉,作为质量的信号。先前的工作已经探索了饲养牛市场中的声誉效应,但据我们所知,我们是第一个探索繁殖替代牛市场中声誉效应的人。利用每年更换小母牛的销售数据,我们分析了小母牛特征的价值,并测试了声誉发展的溢价。在控制了繁殖实践、品种和其他特征后,我们发现声誉并没有发挥夏皮罗理论的作用。在这次销售中,批量订单是战略性选择的,可能会向买家表明饲养的小母牛的质量,取代了对声誉的需求。这项研究强调了质量信号和区域偏好在养殖替代牛营销中的重要性,并为未来检验夏皮罗理论的研究奠定了实证基础。
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引用次数: 0
Covid-19-tested food labels Covid-19检测食品标签
IF 9 2区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-03-30 DOI: 10.1111/cjag.12327
Longzhong Shi, Xuan Chen, Bo Chen

While the transmission of virus SARS-CoV-2 via food is rare, some Chinese food retailers are considering a Covid-19-tested food label. However, how consumers may support such a label is unknown. We quantify Chinese consumers’ willingness to pay (WTP) for food carrying a Covid-19-tested label using an online choice experiment. We find that the WTPs for such a label are always positive for all food products considered. The amount of WTP depends on the entities authenticating the labels, country of origin of the food, and consumers’ socio-demographic status. Contrary to expectation, the knowledge on Covid-19 does not affect consumer preferences for the Covid-19-tested food labels. Our benefit and cost analysis suggests a possible large benefit of creating and administering a Covid-19-tested food label. This study provides insights for policymakers, global food manufacturers, and retailers to create marketing strategies to alleviate consumer food safety concerns associated with Covid-19.

尽管SARS-CoV-2病毒通过食品传播的情况很罕见,但一些中国食品零售商正在考虑新冠病毒检测食品标签。然而,消费者如何支持这样一个标签还不得而知。我们通过在线选择实验量化了中国消费者购买带有Covid-19检测标签的食品的支付意愿(WTP)。我们发现,对于所有考虑的食品,这种标签的WTP总是积极的。WTP的金额取决于认证标签的实体、食品的原产国和消费者的社会人口状况。与预期相反,有关新冠肺炎的知识不会影响消费者对新冠肺炎检测食品标签的偏好。我们的效益和成本分析表明,创建和管理新冠病毒检测食品标签可能会带来巨大效益。这项研究为政策制定者、全球食品制造商和零售商制定营销策略以缓解消费者对新冠肺炎食品安全的担忧提供了见解。
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引用次数: 0
Reflections on technological progress in the agri-food industry: Past, present, and future 对农业食品工业技术进步的思考:过去、现在和未来
IF 9 2区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-03-22 DOI: 10.1111/cjag.12325
Getu Hailu

Technological advances—for example, from hand milking to robotic milking—are at the heart of economic transformation and have significantly shaped the agri-food industry and economic growth throughout history. A look at the lead article of the first issue (and the first volume, 1952) of the Canadian Journal of Agricultural Economics (CJAE) 70 years ago reveals an ongoing inquiry within the discipline about how technological progress has shaped how we manage our farms with the implications on aggregate industry productivity and food prices. The topics discussed along these lines in the first issue of the CJAE are still relevant today—for example, challenges with measuring productivity and innovation, diffusion of innovation, technological unemployment, demand for skilled workers, financing innovations, climate change and food security. Science, technology, and innovation for the 21st century hold the potential to foster resilient and sustainable intensification of farm production and productivity growth for the agri-food industry. In this address, I reflect on the past, present, and future impacts of technological innovations and productivity growth on the agri-food industry and discuss the implications for future research, welfare, and policy.

技术进步——例如,从手工挤奶到机器人挤奶——是经济转型的核心,在历史上对农业食品行业和经济增长产生了重大影响。70年前,《加拿大农业经济学杂志》(CJAE)第一期(1952年第1卷)的主要文章揭示了该学科内部正在进行的一项调查,即技术进步如何影响我们管理农场,并对总工业生产力和食品价格产生影响。第一期CJAE中围绕这些主题讨论的主题今天仍然具有相关性——例如,衡量生产力和创新、创新扩散、技术失业、对技术工人的需求、创新融资、气候变化和粮食安全方面的挑战。21世纪的科学、技术和创新有可能促进农业生产的弹性和可持续集约化,并促进农业食品行业的生产力增长。在这次演讲中,我回顾了技术创新和生产力增长对农业食品行业的过去、现在和未来影响,并讨论了对未来研究、福利和政策的影响。
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引用次数: 0
Micro insights on the pathways to agricultural transformation: Comparative evidence from Southeast Asia and Sub-Saharan Africa 农业转型路径的微观洞察:来自东南亚和撒哈拉以南非洲的比较证据
IF 9 2区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-02-28 DOI: 10.2499/p15738coll2.136546
Mulubrhan Amare, P. Parvathi, T. Nguyen
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引用次数: 8
Micro insights on the pathways to agricultural transformation: Comparative evidence from Southeast Asia and Sub-Saharan Africa 农业转型路径的微观见解:来自东南亚和撒哈拉以南非洲的比较证据
IF 9 2区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-02-28 DOI: 10.1111/cjag.12326
Mulubrhan Amare, Priyanka Parvathi, Trung Thanh Nguyen

Most studies of agricultural transformation document the impact of agricultural income growth on macroeconomic indicators of development. Much less is known about the micro-scale changes within the farming sector that signal a transformation precipitated by agricultural income growth. This study provides a comparative analysis of the patterns of micro-level changes that occur among small-holder farmers in Uganda and Malawi in Sub-Saharan Africa (SSA), and Thailand and Vietnam in Southeast Asia (SEA). Our analysis provides several important insights on agricultural transformation in these two regions. First, agricultural income in all examined countries is vulnerable to changes in precipitation and temperature, an effect that is nonlinear and asymmetric. SSA countries are more vulnerable to these weather changes. Second, exogenous increases in agricultural income in previous years improve non-farm income and trigger a change in labor allocation within the rural sector in SEA. However, this is the opposite in SSA where the increase in agricultural income reduces non-farm income, indicating a substitution effect between farm and non-farm sectors. These findings reveal clear agricultural transformation driven by agricultural income in SEA but no similar evidence in SSA.

大多数关于农业转型的研究都记录了农业收入增长对宏观经济发展指标的影响。人们对农业部门内部的微观变化知之甚少,这些变化标志着农业收入增长带来的转变。本研究对撒哈拉以南非洲(SSA)的乌干达和马拉维以及东南亚(SEA)的泰国和越南的小农户的微观变化模式进行了比较分析。我们的分析为这两个地区的农业转型提供了一些重要的见解。首先,所有受调查国家的农业收入都容易受到降水和温度变化的影响,这种影响是非线性和不对称的。撒哈拉以南非洲国家更容易受到这些天气变化的影响。其次,前几年农业收入的外生增长提高了非农收入,并引发了SEA农村部门劳动力配置的变化。然而,SSA的情况正好相反,农业收入的增加减少了非农收入,这表明农业和非农部门之间存在替代效应。这些发现揭示了SEA中农业收入驱动的明显农业转型,但SSA中没有类似的证据。
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引用次数: 0
期刊
Canadian Journal of Agricultural Economics-Revue Canadienne D Agroeconomie
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