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Effect of “Golden Pineapple Innovation” on Costa Rica's Pineapple Exports to U.S. Market: An Econometric Approach “金菠萝创新”对哥斯达黎加菠萝出口美国市场的影响:一种计量经济学方法
Pub Date : 2020-07-20 DOI: 10.22004/AG.ECON.305325
Javier Paniagua-Molina, Luis Ricardo Solís-Rivera
An investigation was conducted on the effect of introducing a new variety of pineapple, known as golden pineapple (MD2) on the level of pineapple exports to the US market. Based on historical trade data from 1983 to 2017, a univariate structural econometric model was adjusted including variables related to export demand and isolating the effect of innovation through a binary control variable. The results obtained show that the effect of the innovation was a 25.27% increase in exports from Costa Rica to the North American market since the innovation was implemented. Conveniently, agricultural policymakers should consider similar studies to visualize the impact that innovation has on agricultural activities, and based on this, to plan, research, develop, and innovate programs within the agricultural sector.
对引进一种名为金菠萝(MD2)的新品种菠萝对美国市场菠萝出口水平的影响进行了调查。基于1983年至2017年的历史贸易数据,调整了一个单变量结构经济计量模型,包括与出口需求相关的变量,并通过二元控制变量隔离创新的影响。结果表明,自创新实施以来,哥斯达黎加对北美市场的出口增长了25.27%。方便的是,农业政策制定者应该考虑类似的研究,以可视化创新对农业活动的影响,并在此基础上规划、研究、开发和创新农业部门的计划。
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引用次数: 1
Promoting Improved Agricultural Technologies to Increase Smallholder Farm Production Efficiency: Ghanaian Study of Cassava Farmers 促进改良农业技术以提高小农生产效率:加纳木薯农民研究
Pub Date : 2020-07-20 DOI: 10.22004/AG.ECON.305329
E. Inkoom, S. Dadzie, Joseph Ndebugri
Our study provides empirical answer that verifies increase in productivity, if any, through promotion of improved agricultural technologies among smallholder food crop farmers in Africa. We specifically examined Root and Tuber Improvement and Marketing Programme (RTIMP) technology effect on improving the production efficiency of cassava farmers in Ghana. we stratified RTIMP cassava farmers into above average adopters and below average adopters based on their adoption intensity scores and further examined differences in their efficiency levels which we estimated by employing the stochastic frontier production model (SFA). In order to empirically establish if RTIMP technology has actually had effect in improving productivity of the cassava farmers, we estimated an adjusted regression model (average treatment effect and average treatment effect on the treated models). Our results show that the potential outcome mean technical efficiency of about 69% achieved by the above average RTIMP technology adopters is significantly higher than that of the below average technology adopters which was found to be about 64%. Our Average Treatment Effect on the Treated (ATET) estimates confirm that there has been significant increase in the technical efficiency of cassava farmers attributable to the adoption of the RTIMP cassava technology.
我们的研究提供了实证答案,通过在非洲的小农中推广改进的农业技术,验证了生产率的提高(如果有的话)。我们专门研究了根和块茎改良和销售计划(RTIMP)技术对提高加纳木薯农民生产效率的影响。基于采收强度得分,我们将RTIMP木薯农户分为中等以上采收者和中等以下采收者,并利用随机前沿生产模型(SFA)进一步检验了他们的效率水平差异。为了实证证明RTIMP技术是否真的对木薯农民的生产力有提高作用,我们估计了一个调整后的回归模型(平均处理效果和平均处理对处理模型的影响)。结果表明,RTIMP技术采用者的潜在结果平均技术效率约为69%,显著高于RTIMP技术采用者的潜在结果平均技术效率约为64%。我们对被处理作物的平均处理效应(ATET)估计证实,由于采用RTIMP木薯技术,木薯农民的技术效率显著提高。
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引用次数: 4
Factors Affecting Consumption of RTE (Ready-To-Eat) International Food in The United States 影响美国即食国际食品消费的因素
Pub Date : 2020-07-20 DOI: 10.22004/AG.ECON.305328
S. Bhuyan, R. Govindasamy
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引用次数: 0
HOW MUCH DO FOOD PRICES MATTER FOR MEN’S AND WOMEN’S BODY WEIGHT? 食品价格对男性和女性的体重有多重要?
Pub Date : 2020-04-29 DOI: 10.22004/AG.ECON.303554
Sebastien Buttet, V. Dolar
This article contributes to the literature that studies the impact of food prices on food choices and obesity rates. While it is now well established that daily calories consumption in excess of dietary guidelines and the switch toward more sedentary lifestyles are key factors for the rise in obesity prevalence of American men and women after 1970, there is much less consensus about what caused eating habits of men and women to change over time. We analyze the impact of food prices on body weight in a dynamic setting where men and women have different preferences and choose between J food groups. We derive an analytical expression linking preference parameters, including the elasticity of substitution, to empirical estimates of price and cross-price elasticity of demand for the J food groups. One key takeaway from the calibration is that there is substantial preference heterogeneity between men and women. We find that most food groups are substitutes and thus an increase in food prices, perhaps due to a sin tax, does not always lead to body weight losses.
这篇文章为研究食品价格对食品选择和肥胖率的影响的文献做出了贡献。虽然现在已经确定,超过饮食指南的每日卡路里消耗和向久坐不动的生活方式的转变是1970年后美国男性和女性肥胖率上升的关键因素,但对于是什么导致男性和女性的饮食习惯随着时间的推移而改变,人们的共识要少得多。我们在一个动态环境中分析了食品价格对体重的影响,在这个环境中,男性和女性有不同的偏好,并在J类食品之间进行选择。我们推导了一个分析表达式,将偏好参数(包括替代弹性)与J食品组的价格和需求跨价格弹性的经验估计联系起来。校准得出的一个关键结论是,男性和女性之间存在显著的偏好异质性。我们发现,大多数食物都是替代品,因此食品价格的上涨,也许是由于罪恶税,并不总是会导致体重下降。
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引用次数: 0
Analysis of the Energy Balance in the Morus alba-Bombyx mori System in Cuba’s Sericulture 古巴蚕桑-家蚕系统能量平衡分析
Pub Date : 2020-03-18 DOI: 10.11648/J.IJAE.20200501.14
A. Ruiz, B. Caballero, Y. Martínez, Ramón Vega, A. Valdés, Mari C. Pérez
The National Sericulture Project in Havana, started in 2011 to establish silkworm (Bombyx mori) rearing at a large scale in order to generate products to be used in the cosmetic, biomedical, biotechnological and pharmaceutical industries. The feeding of Bombyx mori L. exclusively depends on mulberry (Morus alba L.), so turning this system into a sustainable one for its development in the country requires an efficient use of the energy mainly based on the energy input-output relationships, on having mulberry cultivars of a high photosynthetic efficiency, on increasing agroecological practices and introducing other agricultural activities to diversify the intensive mulberry production system. The analysis of the energy balance used the software Energia 3.01, designed to estimate the energy of agroecosystems. The management of the area was characterized by identifying conventional agroecological practices developed on it. The results of estimating the energy efficiency indicate a mean efficiency for a specialized system depending on very few external outputs. These results were compared to 2019 the energy balance made in 2017. The introduction of new productive activities leading to increased energy efficiency and the generation of new products with a favorable impact on the environment and on the energy balance of the system, were proposed.
哈瓦那的国家蚕业项目于2011年启动,旨在建立大规模的家蚕(家蚕)饲养,以生产用于化妆品、生物医学、生物技术和制药行业的产品。家蚕的取食完全依赖于桑树(Morus alba L.),因此要使该系统成为该国可持续发展的系统,需要有效利用能源,主要基于能源投入产出关系,具有高光合效率的桑树品种,增加农业生态实践和引入其他农业活动,使集约化的桑树生产系统多样化。能量平衡分析使用Energia 3.01软件,用于估算农业生态系统的能量。该地区管理的特点是确定在其上开发的传统农业生态做法。估计能源效率的结果表明,一个专业系统的平均效率依赖于很少的外部输出。这些结果与2019年的2017年的能量平衡进行了比较。建议采用新的生产活动,从而提高能源效率和生产对环境和系统的能量平衡有有利影响的新产品。
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引用次数: 0
Analysis of Factors Influencing Access to Formal Loan Among Small-scale Swamp Rice Farmers in Obubra Local Government Area, Cross River State, Nigeria 尼日利亚克罗斯河州Obubra地方政府区小规模沼泽稻农获得正规贷款的影响因素分析
Pub Date : 2020-01-17 DOI: 10.11648/J.IJAE.20190406.19
Kuye Olufemi Oludayo, Ogiri Oyom Mbina
This study analyzed the factors influencing access to formal agricultural loan among small-scale swamp rice farmers in Obubra Local Government Area in Cross River State, Nigeria. Data were obtained from 120 respondents by using multi-stage random sampling technique. Descriptive statistics and logit regression model were used to analyze the data. The results showed that majority (62.5%) of the farmers were males, about 40% were aged between 31-40 years, married (68.33%), had household size of 7-9 persons (51.67%), had secondary education (51.67%), had farm sizes of 1-2ha (50.83%), had farming experiences of 11-20 years (45%) and only 30.83% had annual farm income of between N51,000.00 and N100,000.00. The logit regression analysis revealed that gender, farm income, household size, education and collateral positively influenced the probability of farmers’ access to loan at 1% significant level respectively. Marital status, farming experience and farm size positively influenced access to loan at 5%, 5% and 10% respectively The major constraints respondents faced in accessing loan are long period of processing loan applications, problem of getting collateral and high interest rate while the major constraints they faced in rice production are crop destruction by cattle, low yield as a result of pests and diseases and low yield as a result of poor soil. The Federal Government should enact law that will motivate the cattle herders to compensate any farmer whose crops have been destroyed or eaten by their cattle and banks should process loan applications on time so that the loan will be disbursed to farmers at the appropriate time.
本研究分析了影响尼日利亚克罗斯河州Obubra地方政府地区小规模沼泽稻农获得正规农业贷款的因素。采用多阶段随机抽样法对120名调查对象进行了数据采集。采用描述性统计和logit回归模型对数据进行分析。结果表明,62.5%的农民为男性,约40%的农民年龄在31-40岁之间,已婚(68.33%),家庭规模为7-9人(51.67%),受过中等教育(51.67%),农场规模为1-2ha(50.83%),有11-20年的农业经验(45%),只有30.83%的农民年农业收入在51,000 - 10万挪威克朗之间。logit回归分析显示,性别、农业收入、家庭规模、教育程度和抵押物分别在1%的显著水平上正向影响农民获得贷款的概率。婚姻状况、耕作经验和农场规模对获得贷款的影响分别为5%、5%和10%。受访者在获得贷款方面面临的主要制约因素是处理贷款申请的时间长、获得抵押品的问题和利率高,而他们在水稻生产方面面临的主要制约因素是牲畜破坏作物、病虫害导致的低产量和土壤贫瘠导致的低产量。联邦政府应颁布法律,激励牧牛人赔偿任何庄稼被牛毁坏或吃掉的农民,银行应及时处理贷款申请,以便在适当的时候向农民发放贷款。
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引用次数: 2
Efficiency differential in rice production technologies in Ghana: a comparison between stochastic and bias-corrected metafrontier approaches. 加纳水稻生产技术的效率差异:随机和偏差校正元前沿方法的比较。
Pub Date : 2020-01-15 DOI: 10.22004/AG.ECON.301271
R. Owusu
Productivity in rain-fed and irrigated rice farming ecosystems are very important for Ghana’s self-sufficiency in rice. This paper, therefore, provides a synthesis of the irrigated and rain-fed rice farming ecosystems in Ghana using recent advances in the production economics literature. Specifically, the technical efficiency differential in the irrigated and rain-fed rice farming ecosystems are estimated using stochastic and bias-corrected data envelopment metafrontier methods. Technical efficiency drivers of the individual rice farming ecosystems are also examined. Using a sample of 381 for the modelling, the estimated results showed that farms under the irrigated rice farming ecosystem are more technically efficient (71%) compared to those under the rain-fed rice farming ecosystem (59%). However, overall technical efficiency falls short of about 36%, suggesting a substantial level of inefficiency in both rice farming ecosystems. In addition, the results revealed male farmers are more technically efficient compared to female farmers. Also, membership of farming associations has efficiency reducing effect. The study proposes that to improve rice productivity, resources should be invested in improving the managerial skills of farmers operating under the two rice farming ecosystems and in infrastructural development.
雨养和灌溉水稻种植生态系统的生产力对加纳的水稻自给自足非常重要。因此,本文利用生产经济学文献的最新进展,对加纳的灌溉和雨养水稻种植生态系统进行了综合。具体而言,采用随机和偏差校正数据包络元前沿方法估计了灌溉和雨养水稻生态系统的技术效率差异。个别水稻种植生态系统的技术效率驱动因素也进行了研究。使用381个样本进行建模,估计结果表明,灌溉水稻种植生态系统下的农场(71%)比雨养水稻种植生态系统下的农场(59%)技术效率更高。然而,总体技术效率低于约36%,这表明两种水稻种植生态系统的效率都很低。此外,研究结果还显示,男性农民的技术效率高于女性农民。此外,农协的会员制也有降低效率的作用。该研究建议,为了提高水稻生产力,资源应该投资于提高在两种水稻种植生态系统下经营的农民的管理技能和基础设施发展。
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引用次数: 0
Commercialisation pathways: implications on smallholder rice farmers' productivity and welfare in Mbarali District, Tanzania. 商业化途径:对坦桑尼亚姆巴拉利地区小农稻农生产力和福利的影响。
Pub Date : 2020-01-15 DOI: 10.22004/AG.ECON.301270
F. N. Rashid, Roselyne Alphonce, I. Minde
This study aimed at evaluating the most effective commercialisation pathway (smallholder and inclusive) and its impacts on productivity and welfare on smallholder rice farmers in the pathways versus rain-fed farmers in Mbarali District. Output and input commercialisation indices (CCI and ICI) and propensity score matching were used for data analysis. The overall output commercialisation was more than half of the produced rice (CCI=59%) but the use of improved inputs in the study area was low (ICI = 27%). The proportion of rice sold was higher in the inclusive pathway (80%) relative to smallholder pathway (70%) and rain-fed scheme (41%). Total factor productivity ranged between 1.17 - 1.21 and 0.98 – 1.02 in the smallholder and inclusive pathways respectively more than that in the rain-fed scheme. In terms of welfare, inclusive pathway was better-off relative to the two groups. Therefore, both smallholder and inclusive pathways should be adopted to explore the synergies.
本研究旨在评估最有效的商业化途径(小农和包容性)及其对Mbarali地区小农稻农与雨养农民的生产力和福利的影响。采用产出和投入商品化指数(CCI和ICI)和倾向得分匹配进行数据分析。总体产量商业化占所生产稻米的一半以上(CCI=59%),但研究区域改良投入品的使用较低(ICI = 27%)。在包容性途径中售出的大米比例(80%)高于小农途径(70%)和雨养方案(41%)。全要素生产率在1.17 ~ 1.21和0.98 ~ 1.02之间,小农和包容性途径分别高于雨养模式。在福利方面,包容性路径相对于两组更富裕。因此,应采取小农和包容性两种途径来探索协同效应。
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引用次数: 0
FACTORS INFLUENCING COMPUTER USAGE AMONG HORTICULTURE FIRMS IN THE UNITED STATES 影响美国园艺公司使用电脑的因素
Pub Date : 2020-01-15 DOI: 10.22004/AG.ECON.301269
C. Posadas
Empirical models describing the factors influencing the levels of computerization of the operations of nurseries and greenhouses in the United States were estimated using the data collected from a regional survey in the Southern States and two national surveys in the United States. The models measure the significant effects of the socioeconomic characteristics of managers and operational characteristics of firms to the level of computer use among nurseries and greenhouses. Results show that the socioeconomic characteristics of the participating owners and managers had exercised limited influence in the decisions involving the computerization of horticulture operations. The operational characteristics of the horticulture operations included in the surveys which have significant influences on the level of computerization included the number of workers hired, level of automation, annual gross sales, wholesale sales, years since establishment, and location. The recent Great Recession encouraged the participating firms to increase the use of computers in their operations.
利用从美国南部各州的一项区域调查和两次全国调查收集的数据,估计了描述影响美国苗圃和温室操作电脑化水平的因素的经验模型。这些模型衡量了管理者的社会经济特征和企业的经营特征对苗圃和温室中计算机使用水平的显著影响。结果表明,参与的业主和管理者的社会经济特征对涉及园艺操作计算机化的决策的影响有限。调查中包含的对计算机化水平有重大影响的园艺业务的操作特征包括雇用的工人数量、自动化水平、年销售额、批发销售额、成立以来的年份和地点。最近的经济大衰退鼓励参与的公司在他们的业务中增加使用计算机。
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引用次数: 0
Performance of the extension department in Taiwan farmers' associations: does employee attitude make a difference? 台湾农协外延部绩效:员工态度是否有影响?
Pub Date : 2020-01-15 DOI: 10.22004/AG.ECON.301268
Luh YirHueih, D. Fang
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引用次数: 1
期刊
International Journal of Food and Agricultural Economics
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