African Journal of Agricultural and Resource Economics-AFJARE最新文献_第3页

Economic analysis of yellow passion fruit production in southeastern Nigeria under different soil fertility management 尼日利亚东南部不同土壤肥力管理下黄百香果生产的经济分析

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African Journal of Agricultural and Resource Economics-AFJARE Pub Date : 2022-06-30 DOI: 10.53936/afjare.2022.17(2).8

Okorie Okoro Ndukwe, Chinyere Charity Okeke, Paul Kayode Baiyeri

{"title":"Economic analysis of yellow passion fruit production in southeastern Nigeria under different soil fertility management","authors":"Okorie Okoro Ndukwe, Chinyere Charity Okeke, Paul Kayode Baiyeri","doi":"10.53936/afjare.2022.17(2).8","DOIUrl":"https://doi.org/10.53936/afjare.2022.17(2).8","url":null,"abstract":"Three experiments were conducted from 2014 to 2018 to examine the economics of yellow passion fruit production under different soil fertility management. In 2014, two yellow passion fruit genotypes, that is Conventional and KPF 4, were grown in the field and pot simultaneously under varying rates of poultry manure (PM), including 0, 10, 20, 30 and 40 t/ha. In 2016, the response of the two genotypes to a single and combined application of organic and inorganic fertilisers was evaluated under field conditions, namely no fertiliser application, 10, 20 t/ha PM, 400 kg/ha NPK 15:15:15, 5 t/ha PM + 200 kg/ha NPK, and 10 t/ha PM + 200 kg/ha NPK. The profitability indicators were gross revenue, net revenue, returns per naira invested and the profitability index. In 2014, total variable cost increased significantly (P < 0.05) with an increase in PM rates in both the field and pot studies. The highest net returns and returns per naira invested were obtained with the application of 20 t/ha PM. The combined application of 10 t/ha PM + 200 kg/ha NPK recorded the highest gross return, net return and return per naira invested in the 2016 production cycle. Growing the vines without fertiliser application gave significantly least net returns without profit in both production cycles and methods. Consequently, applying 20 t/ha PM was adjudged the most profitable for yellow passion fruit production in the study area, and hence is recommended particularly when organic farming is intended. However, if growers must use inorganic fertiliser, a combined application of 10 t/ha PM + 200 kg/ha NPK will be most profitable.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45730394","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: 0

Influence of proximity to and type of foraging habitat on value of insect pollination in the tropics, with applications to Kenya 觅食栖息地的接近程度和类型对热带昆虫授粉价值的影响及其在肯尼亚的应用

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African Journal of Agricultural and Resource Economics-AFJARE Pub Date : 2022-06-30 DOI: 10.53936/afjare.2022.17(2).12

R. Mulwa, J. Siikamaki, Michael Ndwiga, Jessica Alvsilver

{"title":"Influence of proximity to and type of foraging habitat on value of insect pollination in the tropics, with applications to Kenya","authors":"R. Mulwa, J. Siikamaki, Michael Ndwiga, Jessica Alvsilver","doi":"10.53936/afjare.2022.17(2).12","DOIUrl":"https://doi.org/10.53936/afjare.2022.17(2).12","url":null,"abstract":"Insect pollination improves the yield of most crop species and contributes to one-third of global crop production. The importance of this ecosystem service in improving agricultural production has largely been overlooked, however, in favour of practices that improve soil conditions such as fertiliser use and supplementary irrigation. Using economic modelling, this study estimates the value of insect pollination under different land-use types in Kenya. Our model assumes that a combination of land-use type and the foraging distance of insect pollinators influences the intensity of pollination and the value of agricultural output. To demonstrate the hypothesised relationships, areas under different land-use types, e.g. forest, grassland and cropland, and their distances from households were used as proxies for insect pollination. Concentric buffer zones representing foraging distances of pollinators from the land-use types were drawn at 250 m, 500 m, 1 000 m, 2 000 m and 3 000 m from the farms, and areas under each land use in the buffer zones were estimated for the years 2004, 2007 and 2010. Using the random-effects model and an output distance-function stochastic frontier model, the land-use areas, other factors of production and climate variables were regressed on the value of agricultural output in each buffer zone to determine their contribution to agricultural output resulting from insect pollination. The results indicate higher crop productivity on farms bordering forests and grasslands. This implies that insect pollinators are important for crop production, and increasing the number of pollinator habitats closer to the farms will increase food production in the tropics.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47182702","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: 0

Loan syndication and cocoa production: Evidence from Ghana 银团贷款和可可生产:来自加纳的证据

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African Journal of Agricultural and Resource Economics-AFJARE Pub Date : 2022-06-30 DOI: 10.53936/afjare.2022.17(2).10

James Ntiamoah Doku, Raymond K. Dziwornu, R. Agbanyo, Joyce Owusuaa Awuletey

引用次数: 0

Effect of economic policy uncertainty on agricultural growth in Nigeria 经济政策不确定性对尼日利亚农业增长的影响

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African Journal of Agricultural and Resource Economics-AFJARE Pub Date : 2022-06-30 DOI: 10.53936/afjare.2022.17(2).7

G. Aye, Lydia Kotur

引用次数: 0

Influence of agricultural extension services on technical efficiency of maize farmers in Malawi 农业推广服务对马拉维玉米种植者技术效率的影响

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African Journal of Agricultural and Resource Economics-AFJARE Pub Date : 2022-03-31 DOI: 10.53936/afjare.2022.17(1).6

Aubrey Jolex

引用次数: 1

Asymmetry and transmission of international price shocks of cocoa and coffee in Togo 多哥可可和咖啡国际价格冲击的不对称及其传导

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African Journal of Agricultural and Resource Economics-AFJARE Pub Date : 2022-03-31 DOI: 10.53936/afjare.2022.17(1).5

Koffi Yovo, Kokou Edoh Adabe

引用次数: 0

Trade liberalisation in Kenya: A modelling linkage for wheat and maize 肯尼亚的贸易自由化：小麦和玉米的模型联系

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African Journal of Agricultural and Resource Economics-AFJARE Pub Date : 2022-03-31 DOI: 10.53936/afjare.2022.17(1).1

J. Binfield, P. Boulanger, Tracy Davids, Hasan Dudu, E. Ferrari, Alfredo J. Mainar‐Causapé

{"title":"Trade liberalisation in Kenya: A modelling linkage for wheat and maize","authors":"J. Binfield, P. Boulanger, Tracy Davids, Hasan Dudu, E. Ferrari, Alfredo J. Mainar‐Causapé","doi":"10.53936/afjare.2022.17(1).1","DOIUrl":"https://doi.org/10.53936/afjare.2022.17(1).1","url":null,"abstract":"Kenya has become a driving force of trade integration at the regional and continental level, albeit that this process is still incomplete. Kenya was the first nation, along with Ghana, to ratify the African Continental Free Trade Area (AfCFTA) agreement in May 2018, as it was already engaged with its main trading partners. Trade policy can generate mixed effects across the economy and within the agricultural sector, reflecting differences between markets and commodities. In this paper we argue that a mix of modelling approaches is preferable in order to capture the complexities of these changes. A dynamic-recursive computable general equilibrium model provides broad sectoral and macro-economic effects, which are then incorporated into a partial equilibrium framework for a detailed analysis at the sector level. We demonstrate this using the maize and wheat markets in Kenya as examples. Combining the output of each modelling approach allows the analysis to explicitly include certain characteristics of single markets, particularly regional trade relationships and differences in pricing structure that would be missed by using a single approach in isolation. It shows that further intra-African trade liberalisation will affect wheat markets more than maize in Kenya but, given the low initial tariff levels, the ultimate effects will remain fairly small.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48799512","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

Understanding consumer attitudes to and valuation of organic food in Sub-Saharan Africa: A double-bound contingent method applied in Dakar, Senegal 了解消费者对撒哈拉以南非洲有机食品的态度和评估:在塞内加尔达喀尔应用的双界偶然方法

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African Journal of Agricultural and Resource Economics-AFJARE Pub Date : 2022-03-31 DOI: 10.53936/afjare.2022.17(1).2

A. Seck, Djiby Racine Thiam

{"title":"Understanding consumer attitudes to and valuation of organic food in Sub-Saharan Africa: A double-bound contingent method applied in Dakar, Senegal","authors":"A. Seck, Djiby Racine Thiam","doi":"10.53936/afjare.2022.17(1).2","DOIUrl":"https://doi.org/10.53936/afjare.2022.17(1).2","url":null,"abstract":"Although organic farming is increasingly perceived as a viable alternative to conventional agriculture in the face of deteriorating environmental ecosystems, little is known about consumers’ preferences for organic products in Sub-Saharan Africa. This paper bridges this gap in research and investigates the extent to which consumers value organic food in Dakar, Senegal. The double-bound contingent valuation approach was used on primary data from urban individuals. The results indicate that consumers do indeed significantly value organic vegetables, with a premium averaging 53% and varying across food items. The results also indicate that the current market structure of organic farming tends to undervalue organic products, as the actual price is 25.7% below the average consumers’ reservation price. Consumers who attach a higher value to organic products are found to be young, female, well-educated, wealthy, and fairly concerned about the health and environmental impacts associated with food production. All of these results contribute to laying the foundations to promote sustainable farming practices that make use of local solutions to address global environmental challenges.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43135915","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: 0

Consentement à payer pour le riz local de qualité au Burkina Faso : une analyse par la méthode des enchères expérimentales 同意支付布基纳法索当地优质大米:实验性拍卖方法的分析

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African Journal of Agricultural and Resource Economics-AFJARE Pub Date : 2021-12-31 DOI: 10.53936/afjare.2021.16(4).22

M. Ouédraogo, Matty Demont, Maïmouna N'Dour

{"title":"Consentement à payer pour le riz local de qualité au Burkina Faso : une analyse par la méthode des enchères expérimentales","authors":"M. Ouédraogo, Matty Demont, Maïmouna N'Dour","doi":"10.53936/afjare.2021.16(4).22","DOIUrl":"https://doi.org/10.53936/afjare.2021.16(4).22","url":null,"abstract":"Cette étude vise à analyser les dispositions à acheter et le consentement à payer le riz local par les femmes au Burkina Faso. Les préférences des consommatrices et leurs consentements à payer le riz local de Bagré ont été révélés à partir des enchères expérimentales conduites auprès de 120 femmes de la ville de Ouagadougou. L’étude a montré que 55% des participantes aux enchères expérimentales préfèrent le riz local au riz importé. Environ 74% des consommatrices consentement à payer une prime supplémentaire moyenne de 100 FCFA/kg par rapport au riz importé (Thaïlandais, 5% de brisures) pour acquérir le riz étuvé de Bagré. Elles sont 75% à consentir à payer un supplément moyen de 87 FCFA par kg pour avoir le riz non étuvé de qualité de Bagré. L’étude conclut qu’il existe une demande potentielle urbaine pour le riz local de qualité. Les transformateurs devraient investir dans la qualité de riz en faisant en sorte que les coûts d’investissement additionnels soient inférieurs aux primes exprimées par les consommatrices.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41779419","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

Agricultural policy and commodity price stabilisation in Ghana: The role of buffer stockholding operations 加纳的农业政策和商品价格稳定:缓冲储存业务的作用

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African Journal of Agricultural and Resource Economics-AFJARE Pub Date : 2021-12-31 DOI: 10.53936/afjare.2021.16(4).24

Emmanuel Abokyi, Kofi Fred Asiedu

{"title":"Agricultural policy and commodity price stabilisation in Ghana: The role of buffer stockholding operations","authors":"Emmanuel Abokyi, Kofi Fred Asiedu","doi":"10.53936/afjare.2021.16(4).24","DOIUrl":"https://doi.org/10.53936/afjare.2021.16(4).24","url":null,"abstract":"This paper investigates the extent of price volatility of maize and rice in Ghana following the introduction of public buffer stockholding operations (PBSO) as a policy to stabilise farm output prices in the last decade. We analysed price volatility using the generalised autoregressive conditional heteroscedasticity (GARCH(1,1)) modelling technique. This econometric technique was applied to market-level time-series data from selected major markets in Ghana from 2006 to 2015. The results indicate that price volatility for maize and rice has declined in the long run and, in the short run, shows relatively slow volatility transmission. The findings show that the buffer stockholding operations policy in the selected markets has stabilised the prices of the two commodities, especially in the long run. The results suggest that buffer stockholding operation policy remains a viable alternative for curbing high price volatility if structured well to fit the country context. We also conclude that climate change resilience measures are needed to be integrated into the agriculture and food systems of the country if we want to address the persistent price volatility of maize and rice in Ghana sustainably.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42666385","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: 0