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African Journal of Agricultural and Resource Economics-AFJARE最新文献

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Does agricultural diversification build economic resilience to drought and flood? Evidence from poor households in Zambia 农业多样化能增强经济对干旱和洪水的抵御能力吗?来自赞比亚贫困家庭的证据
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2020-03-30 DOI: 10.53936/afjare.2020.15(1).05
S. Chonabayashi, Theepakorn Jithitikulchai, YeQing Qu
The adverse effects of weather extremes produce widespread damage and cause severe alterations in the normal functioning of household agricultural production in Zambia. Extreme weather events such as floods and drought are expected to increase in intensity and frequency due to climate change. Coupled with high poverty levels and limited institutional capacity, the country is highly vulnerable to the impact of extreme events. We quantify the effects of economic diversification on agricultural productivity of poor farm households with a skew-normal regression approach while accounting for drought and flood shocks. Our analysis finds that economic diversification is a strategy to increase agricultural productivity and mitigate the adverse impact of droughts and floods on agricultural households. The results also support the country's policies to encourage hybrid maize production and to provide crop seeds and fertiliser to poor farmers. This paper provides a framework to plan and inform interventions to enhance household economic resilience to weather shocks through agricultural diversification in Zambia and other countries.
极端天气的不利影响造成了广泛的破坏,并严重改变了赞比亚家庭农业生产的正常运作。由于气候变化,洪水和干旱等极端天气事件的强度和频率预计将增加。加上高度贫困和机构能力有限,该国极易受到极端事件的影响。我们在考虑干旱和洪水冲击的同时,采用偏正态回归方法量化了经济多样化对贫困农户农业生产力的影响。我们的分析发现,经济多样化是一种提高农业生产力和减轻干旱和洪水对农业家庭不利影响的战略。研究结果还支持了该国鼓励杂交玉米生产以及向贫困农民提供作物种子和化肥的政策。本文提供了一个框架,用于规划和告知干预措施,通过赞比亚和其他国家的农业多样化提高家庭经济抵御冲击的能力。
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引用次数: 10
Health and environmental effects of adopting an integrated fruit fly management strategy among mango farmers in Kenya 肯尼亚芒果种植者采用果蝇综合管理战略对健康和环境的影响
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2020-03-30 DOI: 10.53936/afjare.2020.15(1).02
C. M. Mwungu, B. Muriithi, V. Ngeno, H. Affognon, C. Githiomi, G. Diiro, S. Ekesi
Integrated pest management (IPM) has been promoted globally as an alternative approach to the widespread broad-spectrum chemical insecticidal application for the control of pests and diseases in agricultural production to minimise the harmful effects of the chemicals on humans and the environment. This study examines the impact of an IPM strategy developed to control mango fruit flies on humans and the environment. Using a random sample of 371 mango farmers from Meru County in Kenya, health and environmental outcomes were measured using the environmental impact quotient (EIQ) field use and causal impacts, which were estimated using the endogenous switching regression (ESR) model. The results indicate that the adoption of the IPM strategy reduced pesticide use and pesticide toxicity. Policy efforts therefore should focus on promoting and disseminating fruit fly IPM to improve the livelihoods of rural mango farmers, but also reduce human health and environmental threats as a result of pesticide use.
害虫综合管理(IPM)已在全球推广,作为在农业生产中广泛应用化学杀虫剂控制病虫害的替代方法,以尽量减少化学品对人类和环境的有害影响。本研究探讨了用于控制芒果果蝇的IPM策略对人类和环境的影响。对来自肯尼亚Meru县的371名芒果种植者进行随机抽样,使用环境影响商(EIQ)田间使用和因果影响来衡量健康和环境结果,并使用内源性转换回归(ESR)模型对其进行估计。结果表明,采用IPM策略可降低农药用量和农药毒性。因此,政策努力应侧重于促进和传播果蝇IPM,以改善农村芒果种植者的生计,同时减少农药使用对人类健康和环境的威胁。
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引用次数: 7
Heterogeneous demand for soybean quality 大豆品质需求的异质性
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2020-03-01 DOI: 10.53936/afjare.2020.15(1).03
Edward Martey, P. Goldsmith
Agricultural commercialisation is a critical pathway for economic development in Sub-Saharan Africa (SSA). However, the lack of market information may impede this development. To the best of the authors’ knowledge, this is the first paper to examine market information and preferences for soybean quality in a developing-world context. We seek to understand the nature of information markets associated with the nascent soybean trade in Sub-Saharan Africa in order to inform the market and policy of previously unknown key marketing information. The research involves a discrete choice experiment with 228 buyers of soybean involving five key soybean quality attributes. The sample represents three distinct classes of buyer/traders: wholesalers, processors and retailers. Traders significantly discount the price of soybean attributes such as off-colour, small grain size, low oil levels and high contamination with foreign material, such as stones. Foreign material ranks highest of the attributes that we examined, in terms of the discount level, at 22%. The study finds significant preference heterogeneity among traders, explained partly by the socioeconomic and trade characteristics of the respondents. We identified three distinct classes of traders per the latent class logit (LCL) results, namely ‘high price discounters’, ‘big bean supporters’, and ‘oil sceptics’. Our findings improve soybean market information, transparency and signalling. This will lead farmers to be more efficient and allow policymakers to understand better how the market actually prices grain at the farm gate.
农业商业化是撒哈拉以南非洲地区经济发展的重要途径。然而,缺乏市场信息可能会阻碍这一发展。据作者所知,这是第一篇在发展中国家背景下研究市场信息和大豆质量偏好的论文。我们试图了解与撒哈拉以南非洲新兴大豆贸易相关的信息市场的性质,以便为市场和政策提供以前未知的关键营销信息。本研究对228名大豆购买者进行离散选择实验,涉及大豆5个关键品质属性。样本代表了三种不同类别的买家/贸易商:批发商、加工商和零售商。交易商对大豆的一些特性(如颜色不佳、颗粒小、含油量低以及受外来物质(如石头)污染程度高)的价格进行了大幅折扣。就折扣率而言,外国材料在我们研究的属性中排名最高,为22%。研究发现交易者之间存在显著的偏好异质性,部分原因是受访者的社会经济和贸易特征。根据潜在类别logit (LCL)结果,我们确定了三种不同类别的交易者,即“高价折扣者”、“大豆类支持者”和“石油怀疑论者”。我们的发现改善了大豆市场的信息、透明度和信号。这将使农民更有效率,并使政策制定者更好地了解市场是如何在农场门口为粮食定价的。
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引用次数: 5
Labour contracts and performance of cocoa farms in Mbam and Kim in Cameroon 喀麦隆Mbam和Kim可可农场的劳动合同和业绩
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2020-01-01 DOI: 10.22004/AG.ECON.307623
André Nso Ngang, C. Kamdem, Christian Bernard Kaldjob Mbeh, P. Pédelahore, D. Onana, Joephine Mireille Akoa Etoa
In order to understand the influence of the types of hired labour contracts on the performance of cocoa farms in Mbam and Kim in Cameroon, a reasoned sampling exercise was carried out to select 114 cocoa farmers. The two-stage approach using data envelope analysis (DEA) and Tobit censored models made it possible to analyse the efficiency of the farms. Two types of contracts were identified: a fixed annual contract (FAC) and a percentage sales contract (PSC) for cocoa harvested. The PSC appears to be more efficient than the FAC in terms of productivity and the allocation of inputs. In addition, the increase in the area of the farms, the number of clearings and mixed treatments are factors that contribute most to the inefficiency of these cocoa farms, while sanitary harvest, increasing the number of shade settings and cocoa tree sizes are sources of efficiency.
为了了解雇佣劳动合同类型对喀麦隆Mbam和Kim可可农场绩效的影响,对114名可可农民进行了合理的抽样调查。采用数据包络分析(DEA)和Tobit审查模型的两阶段方法使分析农场效率成为可能。确定了两种类型的合同:固定年度合同(FAC)和可可收获百分比销售合同(PSC)。就生产力和投入的分配而言,方案协调委员会似乎比FAC更有效率。此外,农场面积的增加、空地数量的增加和混合处理是造成这些可可农场效率低下的主要因素,而卫生采收、增加树荫设置的数量和可可树的大小是效率的来源。
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引用次数: 0
Impact of women's share of income on household expenditure in southeast Nigeria. 尼日利亚东南部妇女收入份额对家庭支出的影响。
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2020-01-01 DOI: 10.22004/AG.ECON.307616
P. Opata, A. Ezeibe, Chukwuma Otum Ume
The main focus of this paper was to: (i) determine the impact of women’s share of household income on the pattern of expenditure on various categories of basic goods in southeast Nigeria; (ii) explain the pattern of household expenditure using the bargaining model of household behaviour; and (iii) extrapolate the results to the policy implications of gender-specific control of household incomes. We used cross-sectional household data elicited from a sample of 400 households constituting 2 520 members collected from November 2016 to March 2017 and disaggregated by gender. We found that increasing women’s share of incomes raises the budget share for food, children’s clothes, children’s school fees, fuel for household services and other expenditure, although not significantly with the budget shares for alcohol and meals out of the home. Our results suggest that any strategy by policymakers in southeast Nigeria to improve any of the expenditure items should target the empowerment of the gender that will more likely spend their money on the items concerned.
本文的主要重点是:(i)确定妇女在家庭收入中所占份额对尼日利亚东南部各类基本商品支出模式的影响;(ii)利用家庭行为的讨价还价模型解释家庭支出模式;(三)将结果外推到按性别控制家庭收入的政策影响。我们使用了从2016年11月至2017年3月收集的400个家庭样本中获得的横截面家庭数据,其中包括2520名成员,并按性别分类。我们发现,增加妇女在收入中所占的份额,增加了食品、儿童服装、儿童学费、家庭服务燃料和其他支出的预算份额,尽管对酒精和外出就餐的预算份额没有显著影响。我们的研究结果表明,尼日利亚东南部政策制定者改善任何支出项目的任何战略都应以赋予更有可能将钱花在相关项目上的性别权力为目标。
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引用次数: 5
Segmenting the urban market of local rice in Benin: An analysis using the cluster classification method 贝宁当地大米城市市场分割:基于聚类分类方法的分析
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2020-01-01 DOI: 10.22004/AG.ECON.307612
R. Fiamohe
This study identifies appropriate segments of urban markets that can enable rice cooperatives to sell their products effectively. Thus, experimental auctions were carried out in 2015 to collect data from 291 consumers in these urban areas. The two-step cluster segmentation method was used to identify three segments of the local rice market determined by the socio-economic and geographical characteristics of the consumers and the attributes of the rice: the first comprises essentially men who consume little local rice; the second refers essentially to women who do not consume local rice at all; and the third comprises women consuming only local rice. Specific marketing actions targeting each segment are needed to significantly increase local rice consumption and improve the incomes of key players.
这项研究确定了城市市场的适当部分,使大米合作社能够有效地销售其产品。因此,2015年进行了实验性拍卖,收集了这些城市地区291名消费者的数据。采用两步聚类分割方法,根据消费者的社会经济和地理特征以及大米的属性确定了当地大米市场的三个部分:第一部分主要由消费当地大米较少的男性组成;第二种主要指的是根本不吃当地大米的妇女;第三种是只吃当地大米的妇女。需要针对每个细分市场采取具体的营销行动,以显著增加当地大米消费并提高主要参与者的收入。
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引用次数: 0
Barriers to trade in Sub-Saharan Africa food markets 撒哈拉以南非洲粮食市场的贸易壁垒
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2019-01-01 DOI: 10.22004/AG.ECON.284958
Patrick L. Hatzenbuehler
This continent-wide review of studies on price transmission implemented for the global, regional cross-border, within-country urban and within-country rural market segments provides a broad overview of current conditions in Sub-Saharan Africa food markets and provides insights into how market development varies across regions and crops. The review focuses on barriers to trade, both those related to policy and those related to general market development. Observations in the reviewed studies show that there are several long-run and short-run factors that have inhibited, and currently inhibit, food trade in the analysed markets. The long-run factors are related to general market development, such as imperfect substitutability between imported and domestic produce and infrastructure deficiencies. Short-run factors include intermittent changes in trade and/or tax policy and changes in self-sufficiency status. In only a few cases were no barriers to trade identified, and these were for highly traded foods between markets within countries. Since tradability is an indicator of market development, greater policymaker and donor partner attention is needed to remove barriers to trade, especially for foods that are efficiently produced domestically but do not yet have a welldeveloped domestic or international market.
这份在整个大陆范围内对全球、区域跨境、国内城市和国内农村市场部门实施的价格传导研究进行的审查,提供了对撒哈拉以南非洲粮食市场现状的广泛概述,并提供了对不同区域和作物之间市场发展差异的见解。审查的重点是贸易壁垒,既包括与政策有关的壁垒,也包括与一般市场发展有关的壁垒。所审查的研究中的观察结果表明,在所分析的市场中,有几个长期和短期因素抑制了和目前抑制了食品贸易。长期因素与一般市场发展有关,如进口和国内产品之间的不完全可替代性以及基础设施不足。短期因素包括贸易和/或税收政策的间歇性变化以及自给自足状况的变化。只有少数情况没有发现贸易壁垒,而且是针对国家内部市场之间贸易量很大的食品。由于可贸易性是市场发展的一项指标,因此需要决策者和捐助伙伴更加重视消除贸易壁垒,特别是对于那些在国内有效生产但尚未拥有发达的国内或国际市场的粮食。
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引用次数: 4
Seasonality, food prices and dietary choices of vulnerable households: A case study of nutritional resilience in Tanzania 季节性、食品价格和弱势家庭的饮食选择:坦桑尼亚营养恢复力案例研究
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2019-01-01 DOI: 10.22004/AG.ECON.301042
Achilana Mtingele, D. O’Connor
This study examines how food prices and related seasonality factors affect the dietary choices of low-income farm households in rural Tanzania. The Kishapu and Mvomero districts were selected based on contrasting rainfall patterns, farming practices and economic activities. Data were collected before and after harvest in 2014, using household surveys, focus group discussions, key informant interviews and monthly market-price surveys. A linear-programming solution provides a choice-diet bundle of food items, given model constraints. The cost of the choice diet was compared with household incomes to determine diet affordability. Cheaper, more energy-dense foods lacking other nutrients were consumed at lower budgets in both seasons. Policies and strategies to address problems of the high cost of nutritious foods should be considered to enable low-income households to consume affordable but nutritious diets. Moreover, strategies and interventions that can influence behaviour and promote awareness are important for better household nutrition through a suitably balanced diet of available foods.
本研究考察了粮食价格和相关季节性因素如何影响坦桑尼亚农村低收入农户的饮食选择。基沙普和姆沃梅罗地区是根据对比的降雨模式、耕作方式和经济活动选择的。数据收集于2014年收获前后,采用入户调查、焦点小组讨论、关键信息者访谈和月度市场价格调查。线性规划解决方案在给定模型约束的情况下提供了食物的选择-饮食包。选择饮食的成本与家庭收入进行比较,以确定饮食的负担能力。在这两个季节,更便宜、更高能量、缺乏其他营养素的食物的消费预算都较低。应考虑制定政策和战略,解决营养食品价格高的问题,使低收入家庭能够消费负担得起但营养丰富的饮食。此外,能够影响行为和提高认识的战略和干预措施对于通过现有食物的适当均衡饮食改善家庭营养非常重要。
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引用次数: 1
Smallholders’ agricultural commercialisation, food crop yield and poverty reduction: Evidence from rural Burkina Faso 小农农业商业化、粮食作物产量和减贫:来自布基纳法索农村的证据
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2019-01-01 DOI: 10.22004/AG.ECON.284988
S. A. Ouédraogo
This paper analyses the extent to which an increase in food crop yield strengthens the relationship between agricultural commercialisation and rural poverty reduction in Burkina Faso. Based on data collected in 2011 from a sample of 1 178 smallholder farm households in rural Burkina Faso, a logit model, which includes an interaction term between crop commercialisation index and food crop yield, is estimated. The results show that, at a low yield of food crops, commercialisation can result in welfare loss, while the intensity of crop supply becomes a crucial factor of poverty reduction with a high level of yield. This suggests that structural transformation of the agricultural sector in Sub- Saharan Africa has the potential to bring about significant growth in rural income, particularly when staple crops are the driver of this transformation. Therefore, to enhance the contribution of agricultural commercialisation to poverty reduction, policy should also be designed to promote the growth of food crop yield.
本文分析了粮食作物产量的增加在多大程度上加强了布基纳法索农业商业化和农村减贫之间的关系。根据2011年从布基纳法索农村1178个小农家庭样本中收集的数据,估计了一个logit模型,其中包括作物商业化指数和粮食作物产量之间的相互作用项。结果表明,在粮食作物产量较低的情况下,商业化可能导致福利损失,而作物供应强度成为高产能减贫的关键因素。这表明,撒哈拉以南非洲农业部门的结构转型有可能带来农村收入的显著增长,特别是当主粮作物是这一转型的驱动力时。因此,为了提高农业商业化对减贫的贡献,政策也应该设计成促进粮食作物产量的增长。
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引用次数: 4
Farmers’ perceptions of climate change and farm-level adaptation strategies: Evidence from Bassila in Benin 农民对气候变化和农场层面适应战略的看法:来自贝宁Bassila的证据
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2019-01-01 DOI: 10.22004/ag.econ.284991
Achille A. Diencere
Very few studies of the agricultural sector’s adaptation to climate change have been conducted in Benin. This paper focuses on farmers’ perceptions and adaptation decisions in relation to climate change. A double hurdle model that includes a logit regression and a truncated negative binomial regression was developed using data from a survey of 200 farmers located in northern Benin. The results show that farmers’ perceptions of climate change support the macro-level evidence. The econometric results reveal that the most effective ways to increase the probability of adaptation are to secure land rights and support the creation and strengthening of local farm organisations. The most effective ways to increase the intensity of adaptation are to improve access to agricultural finances and extension. The findings of this study have several public policy implications for creating an enabling environment for adaptation to climate change in Benin.
在贝宁,很少进行农业部门适应气候变化的研究。本文重点研究了农民对气候变化的认知和适应决策。利用对贝宁北部200名农民的调查数据,开发了一个包括logit回归和截断负二项回归的双障碍模型。结果表明,农民对气候变化的认知支持宏观层面的证据。计量经济学结果表明,增加适应可能性的最有效方法是确保土地权,并支持建立和加强当地农业组织。提高适应强度的最有效途径是改善获得农业融资和推广的途径。这项研究的结果对在贝宁创造适应气候变化的有利环境具有若干公共政策意义。
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引用次数: 7
期刊
African Journal of Agricultural and Resource Economics-AFJARE
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