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Analysis of intra-region market integration and spatial price transmission in groundnut markets in Malawi 马拉维花生市场区域内市场一体化与空间价格传导分析
IF 1.3 4区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2021-07-03 DOI: 10.1080/03031853.2021.1937246
M. Chitete, W. Mgomezulu, Mercy Bwanaisa, J. Dzanja
ABSTRACT Agricultural marketing has overwhelmingly received policy reforms indeveloping countries, Malawi included. In response to these policyreforms, extensive research on market cointegration has been conducted in evaluating the market performance of various agricultural commodities. In Malawi, literature on groundnut market cointegration is scanty. This study was aimed at understanding price co-movement in groundnut markets in Malawi. Agricultural Market Information System (AMIS) data on groundnut prices from 2005 to 2018 were used. The Vector Error Correction Model was used to analyse the extent of market cointegration, both in the long and the short run. The speeds of adjustments in groundnut markets were found to be very slow. It takes long for the systems to revert back to equilibriums in the long run. In all regions, very few markets are cointegrated. Although the speed of adjustment is slow in most of the cointegrating vectors, Southern region markets depict the fastest speed of adjustment towards long run equilibrium. Irrespective of the speed of adjustment, more markets are cointegrated in northern and central regions than in the southern region. Relevant policies are needed that promote smooth flow of information from surplus to deficit areas. Market infrastructure is also needed in the country.
摘要农业营销在包括马拉维在内的发展中国家得到了绝大多数的政策改革。为了应对这些政策改革,在评估各种农产品的市场表现方面,对市场协整进行了广泛的研究。在马拉维,关于花生市场协整的文献很少。这项研究旨在了解马拉维花生市场的价格变动。使用了2005年至2018年花生价格的农业市场信息系统数据。向量误差修正模型用于分析长期和短期市场协整的程度。花生市场的调整速度被发现非常缓慢。从长远来看,系统需要很长时间才能恢复到平衡状态。在所有地区,很少有市场是一体化的。尽管在大多数协整向量中调整的速度较慢,但南部地区市场描绘了向长期均衡调整的最快速度。无论调整速度如何,北部和中部地区的市场整合程度都高于南部地区。需要制定相关政策,促进信息从盈余地区向赤字地区的平稳流动。该国还需要市场基础设施。
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引用次数: 2
Productive efficiency and farm size in East Africa 东非的生产效率和农场规模
IF 1.3 4区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2021-07-03 DOI: 10.1080/03031853.2021.1960176
Jacques C. Julien, B. Bravo‐Ureta, Nicholas E. Rada
ABSTRACT In this study, we undertake a comparative analysis to re-examine the inverse relationship hypothesis between farm size and land productivity, paying special attention to possible errors in land measurement and the role of technical efficiency (TE). Our primary focus is on the distribution of TE over farm size, so that we may assess the productivity and efficiency relationship with land that has been discussed extensively in the literature. We hypothesize that the distribution of TE over farm sizes is non-linear. To test our hypothesis, we use the Living Standards Measurement Study–Integrated Surveys on Agriculture and a stochastic production frontier with Greene’s (2005) true random effects framework. Specifically, we ask if smaller farms – within the range of farm sizes prevalent in Malawi, Tanzania, and Uganda – are more technically efficient than larger ones after accounting for a number of attributes often ignored such as measures of the production environment, including transportation infrastructure, public extension visits, among other characteristics. The results confirm a robust overall inverse relationship between farm size and land productivity in all three countries. However, the relationship between farm size and TE is positive across some size segments, resulting in a U-shape distribution.
摘要在本研究中,我们进行了比较分析,以重新审视农场规模与土地生产力之间的反比关系假说,特别关注土地计量中可能存在的误差和技术效率的作用。我们的主要关注点是TE在农场规模上的分布,以便我们可以评估文献中广泛讨论的与土地的生产力和效率关系。我们假设TE在农场规模上的分布是非线性的。为了验证我们的假设,我们使用了生活水平衡量研究——农业综合调查和格林(2005)真实随机效应框架的随机生产前沿。具体而言,我们询问,在马拉维、坦桑尼亚和乌干达普遍存在的农场规模范围内,较小的农场在技术上是否比较大的农场更高效,因为考虑了一些经常被忽视的属性,如生产环境的衡量标准,包括交通基础设施、公众参观等特征。研究结果证实,这三个国家的农场规模和土地生产力之间存在着强有力的总体反比关系。然而,农场规模和TE之间的关系在某些规模段上是正的,导致U形分布。
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引用次数: 6
Adoption of ox-drawn minimum tillage ripping by smallholder farmers in Zambia 赞比亚小农采用牛牵引的最低耕作法
IF 1.3 4区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2021-07-03 DOI: 10.1080/03031853.2021.1946412
I. Sakala, T. Kalinda, Chewe Nkonde, W. Burke
ABSTRACT Applying a triple hurdle model to nationally representative farm household data from Zambia, this study examines determinants associated with three sequential crop production decisions: animal draught power adoption, minimum tillage ripping adoption, and the extent of hectares ripped. The correlated random effects estimator is also used to explore two dimensions of minimum tillage ripping adoption: changes in adoption within a household over time (within-household effect) and differences in adoption between households at a given time (between-household effect). Results reveal that age and gender of the household head, the head's level of education, household labour, hectares cultivated, ripper ownership, loan access, receiving conservation farming advice and distance to agricultural service providers are some of the key determinants associated with the three stages investigated using the triple hurdle model. The correlated random effects results demonstrate that while certain factors enhance or inhibit the expected value of hectares ripped within a given household, it is not always the case that these factors have a similar effect when the analysis is between households. This article highlights policy options to enhance ownership of rippers, support smallholder farmer access to loans, facilitate development of agro-dealer networks, and innovative approaches for disseminating conservation farming information to farmers.
本研究采用三障碍模型对赞比亚具有全国代表性的农户数据进行分析,研究了与三个连续作物生产决策相关的决定因素:采用畜力、采用最低耕作率和公顷面积。相关随机效应估计器还用于探讨最小耕翻采用率的两个维度:家庭内采用率随时间的变化(家庭内效应)和特定时间家庭间采用率的差异(家庭间效应)。结果显示,户主的年龄和性别、户主的教育水平、家庭劳动力、种植面积、开膛手所有权、贷款获取、获得保护农业建议以及与农业服务提供者的距离是使用三栏模型调查的三个阶段相关的一些关键决定因素。相关随机效应结果表明,虽然某些因素提高或抑制了特定家庭内的公顷砍伐预期值,但在家庭之间的分析中,这些因素并不总是具有相似的效果。本文重点介绍了提高开荒者所有权、支持小农获得贷款、促进农业经销商网络发展以及向农民传播保护农业信息的创新方法的政策选择。
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引用次数: 3
Structure and entry barriers to access groundnut markets for intermediary traders in central and northern Malawi 马拉维中部和北部中间贸易商进入花生市场的结构和进入壁垒
IF 1.3 4区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2021-07-03 DOI: 10.1080/03031853.2021.1937244
A. Katunga, E. W. Zegeye, G. Ortmann
ABSTRACT Traders that participate in more competitive market structures earn relatively little marketing margins than those that participate in less competitive ones. For better returns, commodity producers have to transact in competitive market structures. Therefore, understanding market structures and market entry barriers are essential to inform policy. The study's objectives were to examine forms of market structure and investigate entry barriers into the local, district, and city groundnut markets for intermediary traders in central and northern Malawi. The findings revealed that the three markets were relatively competitive. Other results showed that business experience and sole ownership of business increased the traders’ likelihood to enter the district and local markets, respectively. Market transaction costs and storage infrastructure negatively and positively influenced the probability of traders’ entry into the local and city markets, respectively. The quantity of produce transacted increased and decreased the likelihood of entry into the local and city markets. Access to credit and informal credit sources increased and decreased the likelihood of entering the city market, respectively. Membership to informal trader associations increased the probability of entering the city market. Thus, institutions, markets and road infrastructure are critical to enhancing intermediary traders’ participation in the local and city groundnut markets.
摘要:参与竞争激烈的市场结构的贸易商比参与竞争较弱的市场结构中的贸易商获得的营销利润相对较少。为了获得更好的回报,商品生产商必须在竞争激烈的市场结构中进行交易。因此,了解市场结构和市场进入壁垒对于政策制定至关重要。该研究的目的是研究市场结构的形式,并调查马拉维中部和北部中介贸易商进入当地、地区和城市花生市场的障碍。调查结果显示,这三个市场竞争相对激烈。其他结果显示,商业经验和企业独资分别增加了贸易商进入地区和当地市场的可能性。市场交易成本和存储基础设施分别对贸易商进入当地和城市市场的概率产生了负面和正面影响。农产品交易量的增加降低了进入当地和城市市场的可能性。获得信贷和非正规信贷的机会分别增加和降低了进入城市市场的可能性。加入非正规贸易商协会增加了进入城市市场的可能性。因此,机构、市场和道路基础设施对于加强中间贸易商对当地和城市花生市场的参与至关重要。
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引用次数: 1
Changing income portfolios and household welfare in rural Uganda 乌干达农村收入组合和家庭福利的变化
IF 1.3 4区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2021-07-03 DOI: 10.1080/03031853.2021.1939743
Moses Kakungulu, M. Isabirye, K. T. Akoyi, Kaat Van Hoyweghen, L. Vranken, M. Maertens
ABSTRACT This paper provides evidence on the heterogeneous welfare implications of rural income portfolios in eastern Uganda. We use household survey data from two-panel rounds, and fixed and random effects estimation and quantile regressions to estimate average and heterogeneous effects. While the literature mostly focuses on either income diversification or participation in non-farm activities, we distinguish between income diversification, using the Simpson Index, and off-farm income generation. We use ex-post income and poverty measures as well as an ex-ante vulnerability measure to analyse welfare effects. We find that income diversification and non-farm income generation improve household income, and reduce poverty and vulnerability. We find that it is most beneficial for poorer households with less land assets to diversify their income portfolio, while moving out of agriculture is equally beneficial at all income levels and most beneficial for households with more human capital. We find that income diversification reduces vulnerability most strongly at high levels of diversification and low levels of income while non-farm income generation reduces vulnerability at lower levels of non-farm income and increases vulnerability at higher levels of non-farm income. Our results lead to nuanced findings that bring additional insights in the literature on structural transformation and rural development.
本文为乌干达东部农村收入组合的异质性福利影响提供了证据。我们使用两轮小组调查的家庭调查数据,以及固定和随机效应估计和分位数回归来估计平均和异质效应。虽然文献主要关注收入多样化或参与非农活动,但我们使用辛普森指数区分了收入多样化和非农创收。我们使用事后收入和贫困衡量标准以及事前脆弱性衡量标准来分析福利影响。我们发现,收入多样化和非农创收提高了家庭收入,减少了贫困和脆弱性。我们发现,对土地资产较少的贫困家庭来说,使其收入组合多样化是最有利的,而迁出农业在所有收入水平上都同样有利,对拥有更多人力资本的家庭来说也是最有利的。我们发现,收入多样化在高多样化水平和低收入水平下最有力地降低了脆弱性,而非农创收在较低非农收入水平下降低了脆弱度,在较高非农收入水平上增加了脆弱性。我们的研究结果带来了细致入微的发现,为结构转型和农村发展的文献带来了更多的见解。
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引用次数: 0
Female farm holding in Botswana's agriculture industry 博茨瓦纳农业部门的女性农场所有者
IF 1.3 4区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2021-07-02 DOI: 10.1080/03031853.2021.1940222
Odile Mackett
ABSTRACT In the Botswana Labour Force Survey, agriculture was identified as the fastest growing employing industry with growth mainly driven by the entrance of women into the industry. As such, the purpose of the study was thus to investigate how the demographic profile of farm holders have changed in Botswana over time. Using Agricultural Survey Reports, the paper descriptively analyses changes in the gender and age composition of farm holders in Botswana. The study found that the industry has in fact employed a larger share of women, but that the movement of women into the industry was still largely dependent on those of men. This is evident in the fact that the share of married male and female farmers move in opposite directions. It also found that during times of distress women's share as farmers increased. The movement of men and women in the industry indicates that policies which have historically been geared towards the needs and characteristics of male farmers and their households may require gender mainstreaming to accommodate female farmers and their households. This paper opens up a debate around gendered social assistance which accommodates women not just as ordinary household members, but more specifically farmers.
摘要在博茨瓦纳劳动力调查中,农业被确定为增长最快的就业行业,其增长主要由女性进入该行业推动。因此,这项研究的目的是调查博茨瓦纳农民的人口结构如何随着时间的推移而变化。利用农业调查报告,本文描述性地分析了博茨瓦纳农民性别和年龄构成的变化。研究发现,该行业实际上雇佣了更大比例的女性,但女性进入该行业的流动在很大程度上仍然依赖于男性。这一点从已婚男女农民的比例朝着相反的方向发展这一事实中可见一斑。研究还发现,在困难时期,妇女作为农民的比例有所增加。该行业的男女流动表明,历史上一直针对男性农民及其家庭的需求和特点的政策可能需要将性别观点纳入主流,以适应女性农民及其家庭。本文围绕性别社会援助展开了一场辩论,该援助不仅将妇女作为普通家庭成员,而且更具体地说是农民。
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引用次数: 0
Welfare impacts of introducing water pollution tax in the Olifants river basin in South Africa: A revisited analysis using a top-down micro-accounting approach 南非Olifants河流域引入水污染税对福利的影响:使用自上而下的微观会计方法重新分析
IF 1.3 4区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2021-06-15 DOI: 10.1080/03031853.2021.1937245
C. Kyei, M. Chitiga‐Mabugu
ABSTRACT Addressing the high levels of poverty and inequality in South Africa remains a central policy concern. In this regard, this paper uses a Computable General Equilibrium (CGE) microsimulation approach to revisit the effects of taxing water pollution on poverty and inequality at the level of a river basin. We combined the commodity and factor price changes from a regional environmental CGE model, after introducing the water pollution tax, with household survey data from the 2012 National Income Dynamics Survey (NIDS) to explain the welfare impacts. The result shows that the tax policy will in general have adverse impacts in terms of welfare, poverty, and inequality. However, the tax policy coupled with a supply-side compensatory measure such as subsidising water pollution abatement has the potential to reduce regional poverty and inequality as well as improve the ecological status of the river. Our finding has policy implications for national and regional water resource managers.
解决南非的高度贫困和不平等问题仍然是一个中心政策问题。在这方面,本文使用可计算一般均衡(CGE)微观模拟方法来重新审视在流域层面上对水污染征税对贫困和不平等的影响。在引入水污染税后,我们将区域环境CGE模型中的商品和要素价格变化与2012年国民收入动态调查(NIDS)的住户调查数据相结合,以解释福利影响。结果表明,税收政策一般会在福利、贫困和不平等方面产生不利影响。然而,税收政策加上供应方面的补偿措施,如补贴水污染治理,有可能减少区域贫困和不平等,并改善河流的生态状况。我们的发现对国家和区域水资源管理者具有政策意义。
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引用次数: 1
District-level agricultural total factor productivity for the Karoo, South Africa: 1952–2002 南非卡鲁地区级农业全要素生产率:1952–2002
IF 1.3 4区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2021-04-03 DOI: 10.1080/03031853.2021.1908155
B. Conradie, A. Genis, J. Greyling, J. Piesse
ABSTRACT An earlier study of district-level agricultural total factor productivity in the Western Cape province of South Africa Conradie et al. (2009a, b) is extended to include eleven Northern Cape districts that in combination make up the Karoo. Tornqvist Theil total factor productivity (TFP) indices are calculated using accounting data from 10 years of the farm census between 1949/50 and 2001/2. The Northern Cape districts experienced the same general productivity decline as those of the Western Cape’s Central Karoo. Both parts of the broader Karoo region show a similar mean rate of decline. However, the reasons for this are different, with developments in irrigation systems a major factor.
摘要对南非西开普省地区级农业全要素生产率的早期研究Conradie等人(2009a,b)扩展到包括11个北开普省地区,这些地区共同构成了卡鲁。Tornqvist Theil全要素生产率(TFP)指数是使用1949/50年至2001/2年10年农业普查的会计数据计算的。北开普省的地区经历了与西开普省中部卡鲁地区相同的总体生产力下降。卡鲁地区的两个地区的平均下降率相似。然而,原因各不相同,灌溉系统的发展是一个主要因素。
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引用次数: 0
Welfare effects of small-scale farmers' participation in apple and mango value chains in Ethiopia 埃塞俄比亚小规模农户参与苹果和芒果价值链的福利效应
IF 1.3 4区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2021-04-03 DOI: 10.1080/03031853.2021.1926298
Mengistie Mossie, Alemseged Gerezgiher, Z. Ayalew, Zerihun Nigussie
ABSTRACT This study examines the effects of participation in the fruit value chain on small-scale farmers' economic welfare in Ethiopia's Upper-Blue Nile Basin, focusing on apple and mango crops. This household economic welfare is measured by the consumption expenditure approach. Primary data were collected from a random sample of 384 households, 211 of which are fruit value chain participants and the rest are non-participants. The endogenous switching regression model was used to control for selection bias and unobserved heterogeneity. The study finds that the more apple and mango farmers join the value chain, the higher their consumption expenditure becomes. On average, the apple and mango value chain participation increased household consumption expenditure by about 17% and 18.5%, respectively. Overall, the results indicate a positive economic welfare effect of small-scale farmer participation. Hence, supporting small-scale farmers is imperative and a reasonable policy approach to improve their economic welfare in rural Ethiopia.
摘要本研究考察了参与水果价值链对埃塞俄比亚青尼罗河上游流域小规模农民经济福利的影响,重点是苹果和芒果作物。这种家庭经济福利是用消费支出法来衡量的。主要数据是从384户家庭的随机样本中收集的,其中211户是水果价值链参与者,其余为非参与者。内生转换回归模型用于控制选择偏差和未观察到的异质性。研究发现,加入价值链的苹果和芒果农户越多,他们的消费支出就越高。平均而言,苹果和芒果价值链的参与分别使家庭消费支出增加了约17%和18.5%。总体而言,研究结果表明,小规模农民参与具有积极的经济福利效应。因此,支持小规模农民是当务之急,也是改善埃塞俄比亚农村经济福利的合理政策方法。
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引用次数: 8
Land redistribution in South Africa’s land reform policy: a better way to select beneficiaries 南非土地改革政策中的土地再分配:选择受益者的更好方式
IF 1.3 4区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2021-04-03 DOI: 10.1080/03031853.2021.1906286
S. Zantsi, J. Greyling
ABSTRACT South Africa’s land reform policy might succeed better if it had clear criteria for selecting beneficiaries for land redistribution. The National Development Plan identifies the intended beneficiaries and states how they should be selected, but implementation of the plan is haphazard. A 2019 report by the Presidency’s Land Reform and Agriculture Advisory Panel recommends that the beneficiary selection process be clear and transparent. In this paper, we respond to the report and expand on a proposal in the 2020 draft Beneficiary Selection Policy. Our study is based on a review of the relevant policies and the literature on beneficiary selection, and a profile of 833 potential land redistribution beneficiaries randomly selected from three provinces in South Africa. We highlight the flaws in the existing selection methods. Building on the suggestion of Vink and Kirsten (2019) of a tender or job application process, we suggest improvements we suggest improvements that could reduce inefficiencies and make the selection process inclusive and transparent.
如果南非的土地改革政策有明确的标准来选择土地再分配的受益者,它可能会取得更好的成功。国家发展计划确定了预期的受益者,并说明了如何选择他们,但计划的实施是随意的。总统土地改革和农业咨询小组2019年的一份报告建议,受益人的选择过程应清晰透明。在本文中,我们对该报告做出了回应,并对2020年受益人选择政策草案中的一项建议进行了扩展。我们的研究基于对受益者选择的相关政策和文献的回顾,以及从南非三个省随机抽取的833名潜在土地再分配受益者的概况。我们强调了现有选择方法的缺陷。基于Vink和Kirsten(2019)对招标或工作申请流程的建议,我们建议改进,我们建议改进可以减少低效率,使选择过程具有包容性和透明度。
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引用次数: 7
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Agrekon
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