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Assessing the Contribution of Climate-smart Agriculture Practices on the Resilience of Maize Farmers in Bungoma County, Kenya 评估气候智能农业实践对肯尼亚本戈马县玉米农民恢复力的贡献
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2021-06-30 DOI: 10.53936/afjare.2021.16(2).09
Philip Siminyu, W. Oluoch-Kosura, H. De Groote, Judith Syombua Mbau
Climate variability threatens farmers’ livelihoods. Efforts to address climate stress recognise climate-smart agriculture (CSA) as a promising approach to minimising the damage caused by increasing weather variability. However, the effect of CSA practices on the resilience of maize farmers in the face of climate variability is not well understood. This study assesses the effects of CSA practices on the resilience of maize farmers. Using primary data from 250 randomly sampled maize farmers in Kenya, a resilience index was generated and then analysed using a structural equation model. The results show that CSA practices increase the resilience of farmers, suggesting enhanced resilience to climate variability. CSA practices improve farmers’ food security and welfare, and their adoption should be promoted.
气候变化威胁着农民的生计。应对气候压力的努力认识到,气候智能农业(CSA)是一种很有前途的方法,可以最大限度地减少天气变异性增加造成的损害。然而,CSA做法对玉米种植户在气候变化面前的恢复力的影响尚不清楚。本研究评估了CSA实践对玉米种植户恢复力的影响。利用来自肯尼亚250名随机抽样玉米种植户的原始数据,生成了一个恢复力指数,然后使用结构方程模型进行分析。结果表明,CSA做法提高了农民的复原力,表明对气候变化的复原力增强了。CSA的做法改善了农民的粮食安全和福利,应该促进它们的采用。
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引用次数: 0
Heterogeneity in consumer preferences for organic and genetically modified food products in Ghana 加纳消费者对有机和转基因食品偏好的异质性
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2021-06-30 DOI: 10.53936/afjare.2021.16(2).08
R. Owusu, S. Dadzie
Consumers are increasingly becoming very concerned about food safety, with many giving preference to organic food products over conventional food products, which make use of agrochemicals with potential implications for health. Furthermore, to make the food choice decisions even more complex, genetically modified (GM) foods have been introduced in an attempt to meet global food demand. Consumers therefore must make decisions regarding organic and GM foods. This paper investigates consumer heterogeneity for organic and GM tomatoes in Ghana using advanced discrete choice modelling techniques. The data for empirical application come from a choice experimental study conducted among 200 consumers in Ghana. Our econometric modelling revealed that the sampled consumers preferred organic tomatoes that are produced locally and certified by the Food and Drugs Authority. However, we find a likelihood that women and older consumers may have preferences for GM tomatoes with environmental and health benefits. Policy implications are drawn from the findings of the study.
消费者越来越关注食品安全,许多人更喜欢有机食品,而不是传统食品,因为传统食品使用了对健康有潜在影响的农用化学品。此外,为了使食品选择决策更加复杂,为了满足全球食品需求,引入了转基因食品。因此,消费者必须就有机食品和转基因食品做出决定。本文使用先进的离散选择建模技术调查了加纳有机番茄和转基因番茄的消费者异质性。实证应用数据来自于在加纳200名消费者中进行的一项选择实验研究。我们的经济计量模型显示,抽样消费者更喜欢当地生产并经食品药品监督管理局认证的有机番茄。然而,我们发现,女性和老年消费者可能更喜欢对环境和健康有益的转基因番茄。研究结果对政策产生了影响。
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引用次数: 2
Transmission of global wheat prices to domestic markets in Kenya: A cointegration approach 全球小麦价格对肯尼亚国内市场的传导:协整方法
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2021-03-30 DOI: 10.53936/afjare.2021.16(2).06
Jonathan Makau Nzuma, Patrick Kipruto Kirui
This paper evaluates the extent to which changes in international wheat prices are transmitted to domestic markets in Kenya using an error correction model (ECM) that employs monthly producer price data for the period 2002 to 2020. Domestic wheat markets in Kenya were found to be strongly integrated while, international wheat markets were cointegrated with domestic prices at the port of Mombasa. The long-run elasticity of price transmission was estimated at 0.91, which implies that 91% of the changes in international wheat prices are transmitted to domestic markets in Kenya. The speed of adjustment was estimated at -0.069, which implies that it takes about 14 months for the changes in the international wheat price to be fully transmitted to the Kenyan domestic market. Wheat farmers in Kenya seem to be insulated from international price shocks given the long period of time it takes for domestic markets to adjust to international price changes. Even though not explicitly analysed, government border policies, market and infrastructure impediments seem to be underlying causes of the incomplete price pass-through, along with the low speeds of adjustments. Our analysis suggests that the main constraint to a complete pass-through is the existence of price-setting power at the producer level of the wheat market in Kenya. Investments in infrastructure development and the promotion of liberal trade policies can improve the transmission of international wheat price signals to domestic markets in Kenya.
本文利用误差修正模型(ECM)评估了国际小麦价格变化对肯尼亚国内市场的影响程度,该模型采用了2002年至2020年期间的月度生产者价格数据。肯尼亚国内小麦市场被发现具有很强的一体化,而国际小麦市场与蒙巴萨港的国内价格是协一体化的。价格传递的长期弹性估计为0.91,这意味着91%的国际小麦价格变化被传递到肯尼亚国内市场。调整速度估计为-0.069,这意味着国际小麦价格的变化需要大约14个月才能完全传递到肯尼亚国内市场。由于国内市场需要很长时间才能适应国际价格变化,肯尼亚的小麦种植者似乎不受国际价格冲击的影响。尽管没有明确分析,但政府边境政策、市场和基础设施障碍似乎是价格传递不完全以及调整速度缓慢的根本原因。我们的分析表明,完全传递的主要制约因素是在肯尼亚小麦市场的生产者层面存在定价权。对基础设施发展的投资和促进自由贸易政策可以改善国际小麦价格信号向肯尼亚国内市场的传递。
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引用次数: 0
Stochastic meta-frontier function analysis of the regional efficiency and technology gap ratios (TGRs) of small-scale cassava producers in Liberia 利比里亚小规模木薯生产者区域效率和技术差距比的随机元前沿函数分析
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2021-03-30 DOI: 10.53936/afjare.2021.16(2).05
Kollie B. Dogba, Willis Oluoch Kosura, C. Chumo
To enrich agriculture reform and reap its benefits, policy makers need to localise policy issues within and across their domestic zones. Using a stochastic meta-frontier function, this study analysed the production efficiency of the cassava subsector of cassava growers from Bomi and Nimba counties in Liberia. The paper contributes to the domestication of agriculture policy issues within a country. The study found different scales of production returns for cassava growers in Bomi and Nimba counties. Farmer age, gender, household size and access to credit were key determinants of the technical gap ratio of the cassava subsector. The study recommends that relevant stakeholders (in a multistakeholder partnership) design a holistic approach of innovative finance (including microfinance, agriculture insurance and a grouped loan scheme) and social enterprise development that will encourage more women and young people to grow cassava efficiently for the higher productivity of the cassava subsector
为了丰富农业改革并从中受益,政策制定者需要将政策问题本地化到国内各地区。本研究使用随机元边界函数分析了利比里亚波密县和宁巴县木薯种植者木薯子部门的生产效率。这篇论文有助于一个国家内农业政策问题的本土化。研究发现,波密县和宁巴县的木薯种植者的生产回报规模不同。农民年龄、性别、家庭规模和获得信贷的机会是木薯分部门技术差距比率的关键决定因素。该研究建议相关利益攸关方(在多方利益攸关方伙伴关系中)设计一种创新融资(包括小额信贷、农业保险和分组贷款计划)和社会企业发展的整体方法,鼓励更多妇女和年轻人高效种植木薯,以提高木薯部门的生产力
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引用次数: 2
Heterogeneous welfare effects of farmer groups in smallholder irrigation schemes in South Africa 南非小农灌溉计划中农民群体的异质性福利效应
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2021-03-30 DOI: 10.53936/afjare.2021.16(2).03
S. Phakathi, S. Sinyolo, Gcc Fraser, J. Marire
This paper analyses the heterogeneous effects of membership of a farmer group on access to water, use of inorganic fertiliser, household incomes, and farm asset holdings. A sample of 401 irrigators in South Africa was analysed using propensity score matching. The study found that group membership had a positive effect on all four outcomes. Group members had an extra four days of access to water in a month, and applied at least 130 kg/ha more inorganic fertiliser, than non-group members. Group members had a higher household income per capita and more assets than nongroup members. However, the result revealed a heterogeneous effect among group members, with the benefits varying according to members’ socio-economic characteristics as well as internal group dynamics. The government and private donors should continue to promote the formation and organisation of farmers into groups. The role of group membership in farming outcomes can be enhanced if smaller groups are promoted. It is also crucial that strategies for promoting trust, reciprocity and group commitment be implemented for better group outcomes
本文分析了农民群体成员对获得水、无机肥料使用、家庭收入和农场资产持有的异质性影响。使用倾向得分匹配对南非401名灌溉者的样本进行了分析。研究发现,小组成员对所有四种结果都有积极影响。小组成员在一个月内有四天的额外用水时间,并且比非小组成员多施用了至少130公斤/公顷的无机肥料。与非集团成员相比,集团成员的人均家庭收入更高,资产也更多。然而,研究结果显示,群体成员之间存在异质性效应,收益因成员的社会经济特征以及群体内部动态而异。政府和私人捐助者应继续推动农民组建和组织成团体。如果促进较小的团体,团体成员在农业成果中的作用可以得到加强。同样至关重要的是,实施促进信任、互惠和团队承诺的战略,以取得更好的团队成果
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引用次数: 2
Are the current animal trypanosomiasis management methods in Kenya complementary or substitutes? Evidence from Kwale County 肯尼亚目前的动物锥虫病管理方法是补充还是替代?夸勒县的证据
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2021-03-30 DOI: 10.53936/afjare.2021.16(2).04
Arnold Lumumbah Musungu, David Jakinda Otieno, Beatrice Wambui Muriithi, Rose N. Nyikal, D. Masiga, Michael Nyanganga Okal
African animal trypanosomiasis (AAT) and its vectors, mainly tsetse, are a major constraint to livestock production in sub-Saharan Africa (SSA). Control efforts have been ongoing for decades, but finding a sustainable solution remains a major concern. This paper assessed the complementarity and substitutability of existing AAT management methods to inform policies toward an integrated approach. A multivariate probit (MVP) analytical technique was used to model interrelationships in the control methods from 308 randomly selected livestock keepers. The results show that the current AAT control methods are complementary and not substitutes. Furthermore, the number of years of formal education, household size, household income and land size had mixed effects on the households’ decisions to adopt multiple AAT control methods. The key institutional factors that influenced the adoption behaviour were access to credit, group membership, access to veterinary services and drugs, and agricultural training. The results instil confidence in integrated AAT management if livestock farmers’ socio-economic and institutional constraints are addressed sufficiently
非洲动物锥虫病及其媒介,主要是舌蝇,是撒哈拉以南非洲畜牧业生产的主要制约因素。控制工作已经进行了几十年,但找到可持续的解决方案仍然是一个主要问题。本文评估了现有AAT管理方法的互补性和可替代性,为综合方法的政策提供信息。采用多变量probit(MVP)分析技术对308名随机选择的牲畜饲养者的控制方法中的相互关系进行建模。结果表明,目前的AAT控制方法是互补的,而不是替代的。此外,正规教育年限、家庭规模、家庭收入和土地规模对家庭采用多种AAT控制方法的决定有着混合影响。影响收养行为的关键制度因素是获得信贷、团体成员资格、获得兽医服务和药物以及农业培训。如果畜牧养殖户的社会经济和制度限制得到充分解决,结果将给综合AAT管理注入信心
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引用次数: 1
Consumer preferences for organic vegetables in southwestern Nigeria: A choice experiment approach 尼日利亚西南部消费者对有机蔬菜的偏好:一种选择实验方法
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2021-03-30 DOI: 10.53936/afjare.2021.16(2).01
J. Akinwehinmi, T. Amos, Kolawole Ogundari
In sub-Saharan Africa, identifying estimates of consumers’ preferences and willingness to pay (WTP) for safe food continues to receive attention in the literature. Using experimental data from Nigeria, we examined the source of heterogeneities in preference and WTP for organically produced food. The subjective valuation by consumers of certification in relation to third-party certification and the participatory guarantee system (PGS) was also investigated. A sample of 196 households subjected to a discrete choice experiment yielded 1 764 observations that were analysed using the generalised multinomial logit and mixed logit models. The results reveal a strong preference for food safety in terms of reducing chemical residue, which dominated the respondents’ preference and WTP patterns. Concerning certification attributes, consumers were positively disposed to third-party certification, but showed no significant preference for the PGS form of certification. Significant heterogeneities in preference were due mainly to age and awareness of organic products. We suggest that policies should focus on consumers’ understanding of organic food, third-party certification, and organic agriculture
在撒哈拉以南非洲,确定消费者对安全食品的偏好和支付意愿(WTP)的估计继续受到文献的关注。利用尼日利亚的实验数据,我们研究了有机食品偏好和WTP异质性的来源。消费者对第三方认证和参与式担保制度(PGS)的主观评价也进行了调查。对196个家庭进行离散选择实验,得出1764个观察结果,使用广义多项式logit和混合logit模型进行分析。结果显示,在减少化学残留方面,人们对食品安全有强烈的偏好,这在受访者的偏好和WTP模式中占主导地位。在认证属性方面,消费者对第三方认证有积极的倾向,但对PGS形式的认证没有明显的偏好。偏好的显著异质性主要是由于年龄和对有机产品的认识。我们建议政策应该关注消费者对有机食品、第三方认证和有机农业的理解
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引用次数: 4
Agricultural price transmission across space and time: The case of cowpea and yam markets in Nigeria 农业价格在空间和时间上的传播:以尼日利亚的豇豆和土豆市场为例
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2021-03-30 DOI: 10.53936/afjare.2021.16(2).02
O. Onubogu, A. Dipeolu
The transmission of price changes to markets has attracted renewed interest since the international food price spikes of 2007 to 2011. In response to this, this paper investigates the long-run behaviour of Nigerian cowpeas and yam tuber retail prices across space and time from 2000 to 2015. We employed the augmented Dickey-Fuller unit root test, the Johansen co-integration test, the Granger causality test, the vector error-correction model (VECM) and variance decomposition analysis. The Johansen co-integration test confirmed the presence of a long-run relationship across the markets, while the VECM revealed that the speed of adjustment to equilibrium after price shocks in the yam and cowpea markets varied across space (market) and period (time), with the food crisis in the period pre-2007 to 2011 fastest and the food crisis in the period 2007 to 2011 slowest. We are of the opinion that the presence of a long-run relationship in Nigerian cowpea and yam markets is a call for participants to explore opportunities for gainful trade.
自2007年至2011年国际粮食价格飙升以来,价格变化对市场的传导重新引起了人们的关注。为此,本文研究了尼日利亚豇豆和山药块茎零售价格在2000 - 2015年间的时空变化。采用增广Dickey-Fuller单位根检验、Johansen协整检验、Granger因果检验、向量误差修正模型(VECM)和方差分解分析。约翰森协整检验证实了市场之间存在长期关系,而VECM则揭示了山药和豇豆市场在价格冲击后调整到均衡的速度在空间(市场)和时期(时间)上存在差异,2007年之前至2011年期间的粮食危机最快,2007年至2011年期间的粮食危机最慢。我们认为,在尼日利亚豇豆和山药市场上的长期合作关系是对参与者探索有利可图的贸易机会的呼吁。
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引用次数: 2
African agriculture in the context of COVID-19: Finding salvation in the devil 2019冠状病毒病背景下的非洲农业:在魔鬼中寻找救赎
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2020-12-31 DOI: 10.53936/afjare.2020.15(4).19
Guy Blaise Nkamleu
The world is facing unprecedented challenges from COVID-19, which is disrupting lives and livelihoods. The pandemic could profoundly affect the African continent and wipe out hard-won development gains, as sub-Saharan Africa heads into its first recession in 25 years. Beyond the multispatial impact of the coronavirus in Africa, its effects on the agriculture and food system is of particular interest, as food security could be the most affected area and, at the same time, agriculture could be the sector that could help African economies recover quicker from the impact of COVID19. This paper supports the view that COVID-19, as devilish as it may be, offers an opportunity to revive interest in the agricultural sector. The COVID-19 pandemic has placed immense pressures on African countries to raise additional resources, and consequently Africa’s growing public debt is again coming back to the centre stage of the global debate. The conversation on African debt sustainability has begun to dominate the scene and will flood the debate in the near term. While the observed, growing calls for debt relief for African countries are legitimate, we support in this paper that one should not divert attention from the long-term solutions needed to strengthen Africa’s resilience. These long-term solutions lie where they always have: in agriculture. With COVID-19, shipping agricultural inputs and food products from other continents to Africa has become disrupted and is accelerating the trend towards shortening supply chains. This will leave a potential market for inputs and food produced on the continent. COVID-19, together with the launching of the African Continental Free Trade Area (AfCFTA), have aligned the stars in favour of a decisive transformation of the agriculture sector on the continent. Agriculturalists and development experts need to be aware of their responsibility at this time, as they need to advocate for the topic of agricultural development to return to the centre and the heart of the agenda of discussions on how to respond to the consequences of Covid-19 in Africa. In this sense, and unexpectedly, COVID-19 is an opportunity for the agricultural sector.
世界正面临着新冠肺炎带来的前所未有的挑战,它正在扰乱人们的生活和生计。随着撒哈拉以南非洲陷入25年来的首次衰退,这场疫情可能会深刻影响非洲大陆,并抹杀来之不易的发展成果。除了冠状病毒对非洲的多领域影响外,它对农业和粮食系统的影响也特别令人感兴趣,因为粮食安全可能是受影响最严重的领域,同时,农业可能是帮助非洲经济更快地从新冠疫情的影响中恢复的部门19。本文支持这样一种观点,即尽管新冠肺炎可能很可怕,但它提供了一个恢复对农业部门兴趣的机会。新冠肺炎疫情给非洲国家带来了筹集额外资源的巨大压力,因此,非洲不断增长的公共债务再次成为全球辩论的中心议题。关于非洲债务可持续性的讨论已经开始占据主导地位,并将在短期内充斥辩论。尽管观察到越来越多的呼吁减免非洲国家的债务是合理的,但我们在本文中支持,不应将注意力转移到加强非洲复原力所需的长期解决方案上。这些长期解决方案始终存在:农业。随着新冠肺炎的爆发,从其他大陆到非洲的农业投入和食品运输已经中断,并正在加速缩短供应链的趋势。这将为非洲大陆生产的投入和食品留下一个潜在的市场。新冠肺炎,加上非洲大陆自由贸易区(AfCFTA)的启动,使人们一致支持非洲大陆农业部门的决定性转型。农业生产者和发展专家此时需要意识到他们的责任,因为他们需要倡导农业发展主题回到关于如何应对新冠肺炎在非洲的后果的讨论议程的中心和核心。从这个意义上说,而且出乎意料的是,新冠肺炎对农业部门来说是一个机会。
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引用次数: 4
Total factor productivity and technical efficiency among smallholder groundnut farmers in Northern Mozambique 莫桑比克北部花生小农户的全要素生产率和技术效率
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2020-12-31 DOI: 10.53936/afjare.2020.15(4).18
Jeremy Jelliffe, B. Bravo‐Ureta, A. Muitia, Venâncio Salegua, E. Urban, J. Rhoads
This study examines the productivity of smallholder groundnut farmers in North-eastern Mozambique using data for 2016 from two provinces with high total production of said crop. The model used is a Cobb-Douglas True Fixed Effects stochastic production frontier, controlling for geographical heterogeneity, and standard errors clustered at the village level. Our analysis reveals a mean total factor productivity index and technical efficiency score of 0.34 and 0.68 respectively. Seeding rates are found to have major potential for increasing output. This work provides new information to support ongoing efforts to generate greater resilience and robustness in domestic food systems.
这项研究利用2016年莫桑比克东北部两个花生总产量高的省份的数据,考察了该地区花生小农户的生产力。所使用的模型是Cobb Douglas True Fixed Effects随机生产边界,控制了地理异质性和村庄层面的标准误差。我们的分析显示,平均全要素生产率指数和技术效率得分分别为0.34和0.68。播种率被发现具有增加产量的主要潜力。这项工作提供了新的信息,以支持正在进行的努力,提高国内粮食系统的复原力和稳健性。
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引用次数: 0
期刊
African Journal of Agricultural and Resource Economics-AFJARE
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