首页 > 最新文献

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

英文 中文
Does commercialisation drive technical efficiency improvements in Ethiopian subsistence agriculture 商业化是否推动了埃塞俄比亚自给农业技术效率的提高
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2018-01-01 DOI: 10.22004/AG.ECON.273136
W. Tirkaso, S. Hess
The conditions in which increased market participation leads to improved technical efficiency are still not adequately understood. This study therefore investigated farmers’ market participation rates and their predicted technical efficiency scores by performing a two-stage least squares (2SLS) regression analysis using household-level data obtained from the 2009 Ethiopian rural household survey. The predicted efficiency score from the stochastic frontier production function showed that the farmers had a mean technical efficiency score of 40.2%, implying that their output could be increased substantially if improvements were made to existing input mixes. The variables related to educational level and radio and mobile telephone access were positively linked to a farmer’s technical efficiency. The estimated results also indicated that farmers with a higher degree of commercialisation were technically more efficient compared to those with lower market participation. The overall results suggest the importance of increasing the market participation rate of smallholders in order to improve agricultural productivity in rural Ethiopia.
更多的市场参与导致技术效率提高的条件仍然没有得到充分的了解。因此,本研究利用2009年埃塞俄比亚农村住户调查获得的数据,通过两阶段最小二乘(2SLS)回归分析,调查了农民的市场参与率及其预测的技术效率得分。从随机前沿生产函数预测的效率得分显示,农民的平均技术效率得分为40.2%,这意味着如果对现有的投入组合进行改进,他们的产量可以大幅增加。与教育水平、无线电和移动电话接入有关的变量与农民的技术效率呈正相关。估计结果还表明,与市场参与度较低的农民相比,商业化程度较高的农民在技术上效率更高。总体结果表明,提高小农的市场参与率对于提高埃塞俄比亚农村的农业生产力至关重要。
{"title":"Does commercialisation drive technical efficiency improvements in Ethiopian subsistence agriculture","authors":"W. Tirkaso, S. Hess","doi":"10.22004/AG.ECON.273136","DOIUrl":"https://doi.org/10.22004/AG.ECON.273136","url":null,"abstract":"The conditions in which increased market participation leads to improved technical efficiency are still not adequately understood. This study therefore investigated farmers’ market participation rates and their predicted technical efficiency scores by performing a two-stage least squares (2SLS) regression analysis using household-level data obtained from the 2009 Ethiopian rural household survey. The predicted efficiency score from the stochastic frontier production function showed that the farmers had a mean technical efficiency score of 40.2%, implying that their output could be increased substantially if improvements were made to existing input mixes. The variables related to educational level and radio and mobile telephone access were positively linked to a farmer’s technical efficiency. The estimated results also indicated that farmers with a higher degree of commercialisation were technically more efficient compared to those with lower market participation. The overall results suggest the importance of increasing the market participation rate of smallholders in order to improve agricultural productivity in rural Ethiopia.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68533276","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: 11
Tobacco substitutability and its effect on producer revenue and foreign exchange earnings under smallholder agriculture in Malawi 马拉维小农农业下烟草可替代性及其对生产者收入和外汇收入的影响
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2018-01-01 DOI: 10.22004/ag.econ.284992
Mutisungilire Kachulu, L. Rasche, Uwe Schnieder, V. Chinene
This paper analyses the effect of tobacco substitution on the welfare of smallholder farmers in Malawi and provides policy options within the agricultural sector for diversifying the Malawi tobacco-based economy. An ex ante biophysical economic modelling approach was used to analyse changes in consumer welfare, producer revenue and foreign exchange (forex) earnings under assumptions of continued and curtailed tobacco production in Malawi. When tobacco was curtailed, sugarcane and groundnuts offered the best substitutes, contributing over 60% to both producer revenue and forex earnings. The curtailing of tobacco, however, led to a consumer welfare loss of 3%, producer revenue loss of 44% and forex earnings loss of 73%. Forex earnings losses were averted, however, by increasing export markets of certain crops, e.g. sugarcane by a factor of 0.9. In view of tobacco market instabilities and mounting pressure to curtail tobacco production on the global level, these study findings may guide policy decisions on optimal tobacco diversification options for Malawi.
本文分析了烟草替代对马拉维小农福利的影响,并为马拉维烟草经济多样化提供了农业部门内的政策选择。采用事前生物物理经济建模方法分析了在马拉维烟草生产继续减少的假设下消费者福利、生产者收入和外汇收入的变化。当烟草被削减时,甘蔗和花生提供了最好的替代品,为生产者收入和外汇收入贡献了60%以上。然而,限制烟草导致消费者福利损失3%,生产者收入损失44%,外汇收入损失73%。但是,通过将某些作物(如甘蔗)的出口市场增加0.9倍,避免了外汇收入损失。鉴于烟草市场不稳定和在全球一级限制烟草生产的压力越来越大,这些研究结果可能指导马拉维关于最佳烟草多样化选择的政策决定。
{"title":"Tobacco substitutability and its effect on producer revenue and foreign exchange earnings under smallholder agriculture in Malawi","authors":"Mutisungilire Kachulu, L. Rasche, Uwe Schnieder, V. Chinene","doi":"10.22004/ag.econ.284992","DOIUrl":"https://doi.org/10.22004/ag.econ.284992","url":null,"abstract":"This paper analyses the effect of tobacco substitution on the welfare of smallholder farmers in Malawi and provides policy options within the agricultural sector for diversifying the Malawi tobacco-based economy. An ex ante biophysical economic modelling approach was used to analyse changes in consumer welfare, producer revenue and foreign exchange (forex) earnings under assumptions of continued and curtailed tobacco production in Malawi. When tobacco was curtailed, sugarcane and groundnuts offered the best substitutes, contributing over 60% to both producer revenue and forex earnings. The curtailing of tobacco, however, led to a consumer welfare loss of 3%, producer revenue loss of 44% and forex earnings loss of 73%. Forex earnings losses were averted, however, by increasing export markets of certain crops, e.g. sugarcane by a factor of 0.9. In view of tobacco market instabilities and mounting pressure to curtail tobacco production on the global level, these study findings may guide policy decisions on optimal tobacco diversification options for Malawi.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68534944","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
How low is the price elasticity in the global cocoa market 全球可可市场的价格弹性有多低
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2017-07-05 DOI: 10.22004/AG.ECON.258587
András Tóthmihály
The high volatility of the world cocoa price makes the millions of cocoa farmers in the developing world highly vulnerable to poverty. A large volatility in the value of an agricultural commodity is linked to the inelasticity of its supply or demand. Therefore, we test the hypothesis that the price elasticities of the global cocoa supply and demand are low. We describe the global cocoa market with cointegration dynamic supply, demand and price submodels. Our OLS, 2SLS, and SUR estimates are based on annual global observations covering the years 1963 through 2013. We find that the global cocoa supply is extremely price-inelastic: the corresponding short- and long-run estimates are 0.07 and 0.57. The price elasticity of cocoa demand also falls into the extremely inelastic range: the short- and long-run estimates are −0.06 and −0.34. Based on these empirical results, we consider the prospects for cocoa price stabilization. The cocoa price volatility was treated with various unsuccessful methods in the past. A possible solution for reducing the price volatility would be the encouragement of crop diversification. This increases the price elasticity of cocoa supply by adjusting the effort and money allocation between the crops, thus decreasing price volatility.
世界可可价格的高度波动使发展中世界数百万可可种植者极易陷入贫困。农产品价值的巨大波动与其供应或需求的不弹性有关。因此,我们检验了全球可可供需的价格弹性较低的假设。我们用协整动态供应、需求和价格子模型来描述全球可可市场。我们的OLS、2SLS和SUR估计基于1963年至2013年的年度全球观测。我们发现,全球可可供应极不具有价格弹性:相应的短期和长期估计值分别为0.07和0.57。可可需求的价格弹性也属于极不弹性的范围:短期和长期估计值分别为-0.06和-0.34。基于这些实证结果,我们考虑了可可价格稳定的前景。过去曾用各种不成功的方法来处理可可价格的波动。减少价格波动的一个可能的解决办法是鼓励作物多样化。这通过调整作物之间的努力和资金分配来增加可可供应的价格弹性,从而减少价格波动。
{"title":"How low is the price elasticity in the global cocoa market","authors":"András Tóthmihály","doi":"10.22004/AG.ECON.258587","DOIUrl":"https://doi.org/10.22004/AG.ECON.258587","url":null,"abstract":"The high volatility of the world cocoa price makes the millions of cocoa farmers in the developing world highly vulnerable to poverty. A large volatility in the value of an agricultural commodity is linked to the inelasticity of its supply or demand. Therefore, we test the hypothesis that the price elasticities of the global cocoa supply and demand are low. We describe the global cocoa market with cointegration dynamic supply, demand and price submodels. Our OLS, 2SLS, and SUR estimates are based on annual global observations covering the years 1963 through 2013. We find that the global cocoa supply is extremely price-inelastic: the corresponding short- and long-run estimates are 0.07 and 0.57. The price elasticity of cocoa demand also falls into the extremely inelastic range: the short- and long-run estimates are −0.06 and −0.34. Based on these empirical results, we consider the prospects for cocoa price stabilization. The cocoa price volatility was treated with various unsuccessful methods in the past. A possible solution for reducing the price volatility would be the encouragement of crop diversification. This increases the price elasticity of cocoa supply by adjusting the effort and money allocation between the crops, thus decreasing price volatility.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2017-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41965387","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: 14
Tracking agricultural spending when government structures and accounting systems change: The case of Malawi 政府结构和会计制度发生变化时跟踪农业支出:以马拉维为例
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2017-06-01 DOI: 10.22004/AG.ECON.258605
Chance Mwabutwa, K. Pauw
Tracking agricultural expenditure in developing countries in Sub-Saharan Africa in a consistent and harmonised manner is important, not only in the context of the multilateral spending commitments made under the Comprehensive Africa Agriculture Development Programme, but also in order to gain a better understanding of the impact and efficacy of spending. In this paper, a method for identifying and aggregating spending items from a variety of sources is developed to better understand how agricultural spending has evolved in Malawi. The results show that the central government receives around 90% of agriculture allocations, and this is largely spent on fertiliser subsidies, leaving only limited funding for core strategic functions such as research, extension and irrigation. More generally, lessons learned from the Malawi analysis could potentially be applied in other country contexts with similar experiences in terms of the evolution of accounting systems or government structures.
以一致和协调的方式跟踪撒哈拉以南非洲发展中国家的农业支出非常重要,这不仅是在根据《非洲农业发展综合方案》作出的多边支出承诺的背景下,也是为了更好地了解支出的影响和效果。在本文中,开发了一种识别和汇总各种来源的支出项目的方法,以更好地了解马拉维的农业支出是如何演变的。结果显示,中央政府获得了约90%的农业拨款,其中大部分用于化肥补贴,只剩下有限的资金用于研究、推广和灌溉等核心战略职能。更普遍地说,从马拉维分析中吸取的经验教训可能适用于在会计制度或政府结构演变方面有类似经验的其他国家。
{"title":"Tracking agricultural spending when government structures and accounting systems change: The case of Malawi","authors":"Chance Mwabutwa, K. Pauw","doi":"10.22004/AG.ECON.258605","DOIUrl":"https://doi.org/10.22004/AG.ECON.258605","url":null,"abstract":"Tracking agricultural expenditure in developing countries in Sub-Saharan Africa in a consistent and harmonised manner is important, not only in the context of the multilateral spending commitments made under the Comprehensive Africa Agriculture Development Programme, but also in order to gain a better understanding of the impact and efficacy of spending. In this paper, a method for identifying and aggregating spending items from a variety of sources is developed to better understand how agricultural spending has evolved in Malawi. The results show that the central government receives around 90% of agriculture allocations, and this is largely spent on fertiliser subsidies, leaving only limited funding for core strategic functions such as research, extension and irrigation. More generally, lessons learned from the Malawi analysis could potentially be applied in other country contexts with similar experiences in terms of the evolution of accounting systems or government structures.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49360299","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
Intensity of and factors affecting land and water management practices among smallholder maize farmers in Ghana 加纳玉米小农土地和水管理实践的强度及其影响因素
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2017-06-01 DOI: 10.22004/AG.ECON.258607
A. Mensah-Bonsu, D. Sarpong, R. Al-Hassan, S. Asuming-brempong, I. Egyir, J. Kuwornu, Y. Osei-Asare
Using count models, this paper assesses the intensity of land and water management practices among smallholder maize farmers in Ghana and the factors driving the number of practices adopted. Farmers’ use of fertiliser, non-burning of farmland and ploughing-in of vegetative cover are the practices adopted the most. The paper cautiously notes that the farmers who combine three of the land and water management practices have the highest average productivity. Access to extension contact, credit and farmers’ experiences of food shocks are important driving factors. The findings have implications for a comprehensive land and water management policy within which different strategies are articulated to increase the productivity of the farmers. Fertiliser application, no burning, zero tillage and ploughing-in of the vegetative cover are important. However, the regression results for maize yields suggest that the adoption of a high number of the technologies might not necessarily result in better yields.
利用计数模型,本文评估了加纳小农户玉米种植户的土地和水管理实践强度,以及推动所采用实践数量的因素。农民使用化肥、不焚烧农田和种植植被是采用最多的做法。论文谨慎地指出,将三种土地和水管理方法相结合的农民的平均生产力最高。获得延期联系、信贷和农民的粮食冲击经历是重要的驱动因素。研究结果对制定全面的土地和水资源管理政策具有重要意义,在该政策中,制定了不同的战略来提高农民的生产力。施肥、免耕和翻耕植被是重要的。然而,玉米产量的回归结果表明,采用大量技术可能不一定会带来更好的产量。
{"title":"Intensity of and factors affecting land and water management practices among smallholder maize farmers in Ghana","authors":"A. Mensah-Bonsu, D. Sarpong, R. Al-Hassan, S. Asuming-brempong, I. Egyir, J. Kuwornu, Y. Osei-Asare","doi":"10.22004/AG.ECON.258607","DOIUrl":"https://doi.org/10.22004/AG.ECON.258607","url":null,"abstract":"Using count models, this paper assesses the intensity of land and water management practices among smallholder maize farmers in Ghana and the factors driving the number of practices adopted. Farmers’ use of fertiliser, non-burning of farmland and ploughing-in of vegetative cover are the practices adopted the most. The paper cautiously notes that the farmers who combine three of the land and water management practices have the highest average productivity. Access to extension contact, credit and farmers’ experiences of food shocks are important driving factors. The findings have implications for a comprehensive land and water management policy within which different strategies are articulated to increase the productivity of the farmers. Fertiliser application, no burning, zero tillage and ploughing-in of the vegetative cover are important. However, the regression results for maize yields suggest that the adoption of a high number of the technologies might not necessarily result in better yields.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47693870","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: 31
Evaluation of Nigerian agricultural production data 尼日利亚农业生产数据评估
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2017-06-01 DOI: 10.22004/AG.ECON.258606
Patrick L. Hatzenbuehler, P. Abbott, T. Abdoulaye
The absence of an agricultural census in Nigeria means that samples for surveys to estimate agricultural production are obtained from a non-comprehensive, non-representative set of farms. Therefore, aggregate production data quality is questioned. The methods employed herein provide a new way to empirically evaluate the quality of agricultural production estimates. Two objective types of data, namely the normalised difference vegetation index (NDVI), a satellite remote-sensing measure of intertemporal vegetation changes, and prices, which reveal supply-use dynamics, are used to analyse the degree to which agricultural production estimates reflect adjustments in growing/ market conditions. Broadly weak relationships were found between the production estimates and these objective measures, but with variations in degree across states. In addition, these two objective measures are more strongly related to each other than either is to production data. The results imply that the inclusion of NDVI and prices in agricultural production estimation models would improve the quality of the Nigerian production estimate.
尼日利亚没有农业普查,这意味着用于估计农业生产的调查样本是从一组不全面、不具代表性的农场中获得的。因此,总体生产数据的质量受到质疑。本文所采用的方法为农业生产估算质量的实证评价提供了一种新的途径。两种客观类型的数据,即标准化植被差异指数(NDVI),一种跨期植被变化的卫星遥感测量,以及揭示供应-使用动态的价格,用于分析农业生产估计反映生长/市场条件调整的程度。产量估计与这些客观指标之间的关系普遍较弱,但各州之间的关系有所不同。此外,这两个客观指标彼此之间的相关性比任何一个指标与生产数据的相关性都强。结果表明,将NDVI和价格纳入农业生产估算模型将提高尼日利亚生产估算的质量。
{"title":"Evaluation of Nigerian agricultural production data","authors":"Patrick L. Hatzenbuehler, P. Abbott, T. Abdoulaye","doi":"10.22004/AG.ECON.258606","DOIUrl":"https://doi.org/10.22004/AG.ECON.258606","url":null,"abstract":"The absence of an agricultural census in Nigeria means that samples for surveys to estimate agricultural production are obtained from a non-comprehensive, non-representative set of farms. Therefore, aggregate production data quality is questioned. The methods employed herein provide a new way to empirically evaluate the quality of agricultural production estimates. Two objective types of data, namely the normalised difference vegetation index (NDVI), a satellite remote-sensing measure of intertemporal vegetation changes, and prices, which reveal supply-use dynamics, are used to analyse the degree to which agricultural production estimates reflect adjustments in growing/ market conditions. Broadly weak relationships were found between the production estimates and these objective measures, but with variations in degree across states. In addition, these two objective measures are more strongly related to each other than either is to production data. The results imply that the inclusion of NDVI and prices in agricultural production estimation models would improve the quality of the Nigerian production estimate.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45299911","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: 6
What is the value of rice fragrance? Consumer evidence from Senegal 米香的价值是什么?来自塞内加尔的消费者证据
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2017-06-01 DOI: 10.22004/AG.ECON.258603
M. Diagne, M. Demont, Maimouna Ndour
Urban demand for fragrant rice is increasing rapidly in Senegal, but little is known about the value of rice fragrance and the drivers of its demand. We conducted experimental auctions in Dakar to elicit urban consumers’ willingness to upgrade from non-fragrant to fragrant rice and their willingness to pay for domestic versus imported fragrant rice, and assessed the drivers of demand for rice fragrance through a double-hurdle model. The average value of rice fragrance is estimated to be around US$ 0.12 kg-1, as suggested by the 20% price premiums consumers are willing to pay on top of the price of non-fragrant rice. These price premiums further increase to 35% for consumers who express positive buying intentions towards domestic fragrant rice. The value of rice fragrance is found to be driven by factors such as ethnicity, household size, and awareness of fragrance and local fragrant rice.
塞内加尔城市对香米的需求正在迅速增长,但人们对香米的价值及其需求的驱动因素知之甚少。我们在达喀尔进行了实验拍卖,以了解城市消费者从无香大米升级到香大米的意愿,以及他们对国产香米与进口香米的支付意愿,并通过双障碍模型评估了大米香米需求的驱动因素。据估计,香米的平均价格约为0.12美元/公斤,这是消费者愿意在不香米的价格基础上多支付20%的价格。对国产香米表示积极购买意向的消费者,价格溢价进一步提高至35%。研究发现,香米的价值受种族、家庭规模、对香米和当地香米的认识等因素的影响。
{"title":"What is the value of rice fragrance? Consumer evidence from Senegal","authors":"M. Diagne, M. Demont, Maimouna Ndour","doi":"10.22004/AG.ECON.258603","DOIUrl":"https://doi.org/10.22004/AG.ECON.258603","url":null,"abstract":"Urban demand for fragrant rice is increasing rapidly in Senegal, but little is known about the value of rice fragrance and the drivers of its demand. We conducted experimental auctions in Dakar to elicit urban consumers’ willingness to upgrade from non-fragrant to fragrant rice and their willingness to pay for domestic versus imported fragrant rice, and assessed the drivers of demand for rice fragrance through a double-hurdle model. The average value of rice fragrance is estimated to be around US$ 0.12 kg-1, as suggested by the 20% price premiums consumers are willing to pay on top of the price of non-fragrant rice. These price premiums further increase to 35% for consumers who express positive buying intentions towards domestic fragrant rice. The value of rice fragrance is found to be driven by factors such as ethnicity, household size, and awareness of fragrance and local fragrant rice.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47666641","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: 23
Impact of infestation by parasitic weeds on rice farmers' productivity and technical efficiency in sub-Saharan Africa 寄生杂草对撒哈拉以南非洲稻农生产力和技术效率的影响
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2017-03-01 DOI: 10.22004/AG.ECON.258598
S. N'cho, M. Mourits, M. Demont, P. Adegbola, A. Lansink
Rice production is crucial for food security and income generation in sub-Saharan Africa. However, productivity and technical efficiency levels in rice production systems are severely constrained by biotic constraints such as parasitic weeds. This paper assesses the impact of infestation by parasitic weeds on rice farmers’ technical efficiency and examines the potential role of managerial factors in improving technical efficiency. Household and field survey data were collected from rice farmers in Cote d’Ivoire and Benin in West Africa. A stochastic frontier production function was estimated, which allows for identifying the levels of exogenous factors that prevent farmers from improving technical efficiency levels. The results suggest that farmers cope with parasitic weeds through learning from experiencing infestations by parasitic weed. The results will assist national extension in designing segmented training programmes that are better tailored to rice farmers’ needs and preventing food security from being jeopardised by parasitic weeds.
水稻生产对撒哈拉以南非洲的粮食安全和创收至关重要。然而,水稻生产系统的生产力和技术效率水平受到寄生杂草等生物限制的严重制约。本文评估了寄生性杂草对稻农技术效率的影响,并探讨了管理因素在提高技术效率中的潜在作用。从西非科特迪瓦和贝宁的稻农那里收集了家庭和实地调查数据。估计了一个随机前沿生产函数,它允许识别阻止农民提高技术效率水平的外生因素的水平。结果表明,农民通过从寄生杂草的侵害中学习来应对寄生杂草。研究结果将有助于在全国推广设计分段培训方案,这些方案更适合稻农的需要,并防止粮食安全受到寄生杂草的危害。
{"title":"Impact of infestation by parasitic weeds on rice farmers' productivity and technical efficiency in sub-Saharan Africa","authors":"S. N'cho, M. Mourits, M. Demont, P. Adegbola, A. Lansink","doi":"10.22004/AG.ECON.258598","DOIUrl":"https://doi.org/10.22004/AG.ECON.258598","url":null,"abstract":"Rice production is crucial for food security and income generation in sub-Saharan Africa. However, productivity and technical efficiency levels in rice production systems are severely constrained by biotic constraints such as parasitic weeds. This paper assesses the impact of infestation by parasitic weeds on rice farmers’ technical efficiency and examines the potential role of managerial factors in improving technical efficiency. Household and field survey data were collected from rice farmers in Cote d’Ivoire and Benin in West Africa. A stochastic frontier production function was estimated, which allows for identifying the levels of exogenous factors that prevent farmers from improving technical efficiency levels. The results suggest that farmers cope with parasitic weeds through learning from experiencing infestations by parasitic weed. The results will assist national extension in designing segmented training programmes that are better tailored to rice farmers’ needs and preventing food security from being jeopardised by parasitic weeds.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41957341","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
Evaluation de l'adoption des variétés de riz NERICA dans l'Ouest du Burkina Faso 评价布基纳法索西部NERICA水稻品种的采用情况
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2017-03-01 DOI: 10.22004/AG.ECON.258596
M. Ouédraogo, D. Dakouo
Cet article vise a evaluer le taux d'adoption actuel et potentiel des varietes de riz NERICA (New Rice for Africa) et identifier les determinants de leur connaissance et adoption au Burkina Faso. Des enquetes ont ete menees en 2009, aupres de 300 producteurs de riz de 10 villages rizicoles de selection varietale participative. La methode de l'effet moyen du traitement (ATE) a permis de determiner un taux commun d’exposition et d’adoption des NERICA de 17% en 2008 et un taux potentiel d’adoption de 37%. Ceci montre qu’il existe un ecart d'adoption de 20% lie a la diffusion incomplete des NERICA qu'il faut combler en menant davantage d’actions de diffusion de ces varietes. Le contact avec la recherche agricole constitue le principal facteur determinant de l'exposition et de l'adoption des NERICA au Burkina Faso. --- This paper aims to assess the actual and potential adoption rate of NERICA (New Rice for Africa) rice varieties and identify the determinants of their diffusion and adoption in Burkina Faso. The surveys were conducted in 2009 among 300 rice farmers in 10 villages participating in the rice varietal selection tests. The average treatment effect (ATE) method made it possible to determine a common rate of exposure to and adoption of NERICA of 17% in 2008, and a potential adoption rate of 37%. This means that there is an adoption gap of 20% due to the incomplete diffusion of NERICA, which must be addressed by carrying out more actions to disseminate these varieties. The contact with agricultural research services is a key factor determining the awareness and adoption of NERICA in Burkina Faso.
本文旨在评估非洲新水稻品种NERICA(非洲新水稻)目前和潜在的采用率,并确定布基纳法索知识和采用率的决定因素。2009年,对10个水稻村的300名水稻生产者进行了参与式品种选择调查。平均治疗效果法(ATE)确定了2008年NERICA的共同暴露和采用率为17%,潜在采用率为37%。这表明,由于NERICA的不完全传播,有20%的采用差距,需要通过采取更多的行动来传播这些品种来弥补。与农业研究的接触是布基纳法索接触和采用NERICA的主要决定因素。——本文旨在评估非洲新水稻品种的实际和潜在采用率,并确定其在布基纳法索传播和采用率的决定因素。该调查于2009年在10个村庄的300名参与水稻品种选择试验的水稻农民中进行。平均治疗效果(ATE)方法使2008年NERICA的共同暴露率和采用率为17%,潜在采用率为37%。这意味着由于NERICA的传播不完全,有20%的采用差距,必须通过采取更多行动来传播这些品种来解决这个问题。与农业研究部门的接触是决定布基纳法索对NERICA的认识和采用的一个关键因素。
{"title":"Evaluation de l'adoption des variétés de riz NERICA dans l'Ouest du Burkina Faso","authors":"M. Ouédraogo, D. Dakouo","doi":"10.22004/AG.ECON.258596","DOIUrl":"https://doi.org/10.22004/AG.ECON.258596","url":null,"abstract":"Cet article vise a evaluer le taux d'adoption actuel et potentiel des varietes de riz NERICA (New Rice for Africa) et identifier les determinants de leur connaissance et adoption au Burkina Faso. Des enquetes ont ete menees en 2009, aupres de 300 producteurs de riz de 10 villages rizicoles de selection varietale participative. La methode de l'effet moyen du traitement (ATE) a permis de determiner un taux commun d’exposition et d’adoption des NERICA de 17% en 2008 et un taux potentiel d’adoption de 37%. Ceci montre qu’il existe un ecart d'adoption de 20% lie a la diffusion incomplete des NERICA qu'il faut combler en menant davantage d’actions de diffusion de ces varietes. Le contact avec la recherche agricole constitue le principal facteur determinant de l'exposition et de l'adoption des NERICA au Burkina Faso. --- This paper aims to assess the actual and potential adoption rate of NERICA (New Rice for Africa) rice varieties and identify the determinants of their diffusion and adoption in Burkina Faso. The surveys were conducted in 2009 among 300 rice farmers in 10 villages participating in the rice varietal selection tests. The average treatment effect (ATE) method made it possible to determine a common rate of exposure to and adoption of NERICA of 17% in 2008, and a potential adoption rate of 37%. This means that there is an adoption gap of 20% due to the incomplete diffusion of NERICA, which must be addressed by carrying out more actions to disseminate these varieties. The contact with agricultural research services is a key factor determining the awareness and adoption of NERICA in Burkina Faso.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47075879","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: 8
The potential economic impact of Guinea-race sorghum hybrids in Mali: A comparison of research and development paradigms 几内亚高粱杂交种在马里的潜在经济影响:研究与发展模式的比较
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2017-03-01 DOI: 10.22004/ag.econ.258597
A. Kergna, M. Smale, Amidou Assima, A. Diallo, E. Weltzien, F. Rattunde
Rural Malians depend on sorghum as a staple food. Despite long-term investment in sorghum improvement, achieving major gains in sorghum yields has posed challenges. We assessed the potential economic impact of the first Guinea-race sorghum hybrids developed and diffused using participatory plant breeding with decentralised, farmer-based seed systems. We compared this approach to formal plant breeding with a centralised, state-managed seed system – the sole approach pursued in Mali prior to 2000. To incorporate risk, we augmented the economic surplus model by applying Monte Carlo sampling to simulate distributions of model parameters. A census of sorghum varieties in 58 villages of the Sudanese Savanna served as the adoption baseline. Our findings indicate that research on sorghum hybrids with the new approach is a sound investment. Public and private actors need to continue investing in innovative ways to expand the sorghum seed system. The sensitivity of results to the price elasticity of supply suggests commercialisation opportunities.
马里农村人以高粱为主食。尽管对高粱改良进行了长期投资,但要实现高粱产量的大幅增长还是面临挑战。我们评估了第一批几内亚高粱杂交种的潜在经济影响,这些杂交种是通过分散的、以农民为基础的种子系统进行参与性植物育种开发和推广的。我们将这种方法与具有集中、国家管理的种子系统的正式植物育种进行了比较,这是2000年之前马里采用的唯一方法。为了纳入风险,我们通过应用蒙特卡罗抽样来模拟模型参数的分布,对经济盈余模型进行了扩充。对苏丹萨凡纳58个村庄的高粱品种进行普查,作为采用基准。我们的研究结果表明,用新方法研究高粱杂交种是一项合理的投资。公共和私人行为者需要继续投资于创新方式,以扩大高粱种子系统。结果对供应价格弹性的敏感性表明了商业化的机会。
{"title":"The potential economic impact of Guinea-race sorghum hybrids in Mali: A comparison of research and development paradigms","authors":"A. Kergna, M. Smale, Amidou Assima, A. Diallo, E. Weltzien, F. Rattunde","doi":"10.22004/ag.econ.258597","DOIUrl":"https://doi.org/10.22004/ag.econ.258597","url":null,"abstract":"Rural Malians depend on sorghum as a staple food. Despite long-term investment in sorghum \u0000improvement, achieving major gains in sorghum yields has posed challenges. We assessed the \u0000potential economic impact of the first Guinea-race sorghum hybrids developed and diffused using \u0000participatory plant breeding with decentralised, farmer-based seed systems. We compared this \u0000approach to formal plant breeding with a centralised, state-managed seed system – the sole approach \u0000pursued in Mali prior to 2000. To incorporate risk, we augmented the economic surplus model by \u0000applying Monte Carlo sampling to simulate distributions of model parameters. A census of sorghum \u0000varieties in 58 villages of the Sudanese Savanna served as the adoption baseline. Our findings \u0000indicate that research on sorghum hybrids with the new approach is a sound investment. Public and \u0000private actors need to continue investing in innovative ways to expand the sorghum seed system. The \u0000sensitivity of results to the price elasticity of supply suggests commercialisation opportunities.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46153101","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
期刊
African Journal of Agricultural and Resource Economics-AFJARE
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1