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Registros recuperados: 93
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A diffusion model for the adoption of agricultural innovations in structured adopting populations AgEcon
McRoberts, Neil; Franke, A.C..
We introduce a new model for examining the dynamics of uptake of technological innovations in agricultural systems, using the adoption of zero-till wheat in the rice-wheat system in Haryana state, India, as a case study. A new equation is derived which describes the dynamics of adoption over time and takes into account the effect of aggregation (e.g. on a spatial and/or cultural basis) in the adopting population on the rate of adoption. The model extends previous phenomenological models by removing the assumption of homogeneity in the non-adopting fraction of the population. We show how factors affecting the per capita rate of adoption can be captured using cognitive mapping and simulate the dynamics of the adoption process.
Tipo: Working or Discussion Paper Palavras-chave: Bass curve; Adoption; Innovation; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008 URL: http://purl.umn.edu/61117
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A Discriminant Analysis of Factors Associated with The Adoption Of Certified Organic Farming By Smallholder Farmers in Kwazulu-Natal, South Africa AgEcon
Kisaka-Lwayo, Maggie.
Discriminant analysis was used to identify the characteristics that distinguish between fully-certified organic, partially-certified organic and non-organic farmers in Umbumbulu district, KwaZulu-Natal (KZN), South Africa (SA) during October- November 2004. 200 farmers interviewed were drawn by purposively selecting the 151 members of the Ezemvelo Farmers’ Organisation (EFO), and by random sampling 49 non-organic farmers in wards neighbouring EFO. Results from the two estimated discriminant functions suggested that farmers with higher household sizes, incomes, input costs per hectare and number of chickens owned, locations further from innovators and less risk aversion were more likely to be certified as organic. Household location should be considered in...
Tipo: Conference Paper or Presentation Palavras-chave: Adoption; Organic; Discriminant Analysis; South Africa; Agricultural and Food Policy; Community/Rural/Urban Development; Demand and Price Analysis; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Health Economics and Policy; International Relations/Trade; Labor and Human Capital; Marketing; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008 URL: http://purl.umn.edu/52155
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A Dynamic Decision Model of Technology Adoption under Uncertainty: Case of Herbicide-Resistant Rice AgEcon
Annou, Mamane Malam; Wailes, Eric J.; Thomsen, Michael R..
Herbicide-resistant (HR) rice technology is a potential tool for control of red rice in commercial rice production. Using an ex ante mathematical programming framework, this research presents an empirical analysis of HR rice technology adoption under uncertainty. The analysis accounts for stochastic germination of red rice and sheath blight to model a profit maximization problem of crop rotation among HR rice, regular rice, and soybeans. The results demonstrate that risk attitudes and technology efficiency determine adoption rates and optimal rotation patterns.
Tipo: Journal Article Palavras-chave: Biotechnology; Herbicide resistance; Mathematical programming; Profit maximization; Rice; Risk; Rotation; Technology; Adoption; Crop Production/Industries; Production Economics; Research and Development/Tech Change/Emerging Technologies; Q16; Q18; O33; C61.
Ano: 2005 URL: http://purl.umn.edu/43724
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A GROUP INCENTIVE PROGRAM FOR FARMER ADOPTION OF BEST MANAGEMENT PRACTICES: AN APPLICATION TO THE NITRATE POLLUTION PROBLEM IN CENTRAL ILLINOIS AgEcon
Ipe, Viju C.; DeVuyst, Eric A..
The paper demonstrates a group incentive program to encourage farmer adoption of best management practices. It is demonstrated that the best management practices may not actually reduce farm profits but may increase farm profits and reduce environmental pollution. This may bring about a win-win situation for sponsor, the farmer participating in the program, and the society as a whole. The results show that the farmers subjective beliefs about response of corn yields and profits to nitrogen application differ from the simulated responses which in turn results in the willingness-to-Accept for adoption best management practices significantly higher than the expected program payments. The program could be implemented as an educational effort to...
Tipo: Conference Paper or Presentation Palavras-chave: Group incentive; Adoption; Best management practices; Environmental Economics and Policy; Farm Management.
Ano: 1999 URL: http://purl.umn.edu/21704
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ADOPT: a tool for predicting adoption of agricultural innovations AgEcon
Kuehne, Geoff; Llewellyn, Rick S.; Pannell, David J.; Wilkinson, Roger; Dolling, P.; Ewing, Michael A..
A wealth of evidence exists about the adoption of new practices and technologies in agriculture but there does not appear to have been any attempt to simplify this vast body of research knowledge into a model to make quantitative predictions across a broad range of contexts. This is despite increasing demand from research, development and extension agencies for estimates of likely extent of adoption and the likely timeframes for project impacts. This paper reports on the reasoning underpinning the development of ADOPT (Adoption and Diffusion Outcome Prediction Tool). The tool has been designed to: 1) predict an innovation‘s likely peak extent of adoption and likely time for reaching that peak; 2) encourage users to consider the influence of a structured...
Tipo: Conference Paper or Presentation Palavras-chave: Adoption; Diffusion; Prediction; Research and Development/Tech Change/Emerging Technologies.
Ano: 2011 URL: http://purl.umn.edu/100570
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Adoption and Abandonment of Organic Farming: An Empirical Investigation of the Irish Drystock Sector AgEcon
Lapple, Doris; Donnellan, Trevor.
The adoption and possible abandonment of organic farming has yet received little attention in the literature. As time plays an important role in explaining farming decisions, a dynamic econometric framework, namely duration analysis, is used. The probability of entry to and exit of the organic drystock sector is modeled considering a wide range of economic and non‐economic factors. Organic support payments emerge as important driving factor of adoption over time. The empirical results also highlight the importance of environmental and risk attitudes, farming experience as well as influence of other organic farmers on the probability to adopt organic farming; whereas decisions to abandon organic farming appear to be mainly driven by economic and structural...
Tipo: Conference Paper or Presentation Palavras-chave: Adoption; Abandonment; Organic farming; Duration analysis; Economic and non‐economic factors.; Farm Management.
Ano: 2009 URL: http://purl.umn.edu/51062
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Adoption and Abandonment of Precision Soil Sampling in Cotton Production AgEcon
Walton, Jonathan C.; Lambert, Dayton M.; Roberts, Roland K.; Larson, James A.; English, Burton C.; Larkin, Sherry L.; Martin, Steven W.; Marra, Michele C.; Paxton, Kenneth W.; Reeves, Jeanne M..
Adoption of precision agriculture technology has arrived considerable attention, but abandonment has received little. This paper identified factors motivating adoption and abandonment of precision soils sampling in cotton. Younger producers who farmed more cotton area, owned more of their cropland, planted more non-cotton area, or used a computer were more likely to adopt precision soil sampling. Those with more cotton area or who owned livestock were more likely to abandon, while those who used precision soil sampling longer, or used variable-rate fertilizer application were less likely to abandon precision soil sampling.
Tipo: Journal Article Palavras-chave: Abandonment; Adoption; Cotton; Precision; Agriculture; Soil sampling; Southeastern United States; Crop Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/46556
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Adoption and impact of an award winning post-harvest technology: The ASI rice thresher in the Senegal River Valley AgEcon
Diagne, Mandiaye; Demont, Matty; Diagne, Aliou.
In Senegal, one of the highest rice import-dependent countries in Sub-Saharian Africa, double cropping is recommended in the new national program for the Great Offensive for Food and Abundance (GOANA) to boost rice production. This target impels the respect of cropping calendar by using improved technologies like the ASI thresher-cleaner. The causal or treatment effect framework (ATE and LATE) is used to estimate the ASI adoption rate and impact. The results show that the true ASI adoption rate would be 86 % if all the population of irrigated rice farmers were exposed to it. The socioeconomic characteristics that increase the probability to adopt the ASI thresher are farmer experience, farm size, and participation to ASI field experiments and/or contact...
Tipo: Conference Paper or Presentation Palavras-chave: Adoption; Impact; ATE; LATE; Senegal River Valley; ASI thresher; Agricultural and Food Policy; Production Economics; Research and Development/Tech Change/Emerging Technologies.
Ano: 2009 URL: http://purl.umn.edu/50323
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Adoption et Impact Socio-Esonomique de la semi-mecanisation du Procede de Transformation des Amandes de Karite en Beurre au Nord-Benin AgEcon
Ahouandjinou, Morenike Cendrine; Adegbola, Patrice Ygue; Yabi, Jacob Afouda; Adekambi, Souleimane Adeyemi.
In order to diversify the sources of incomes of the country, to reduce the financial risks and to improve the farmers’ revenues, the government of Benin decided to promote new agricultural sectors. One of those new sub-sectors is shea tree which is targeted in this study. Due to the painful of certain stages of shea butter processing, the semi-mechanization was initiated. The paper uses data from a stratified random sample of 198 shea butter producers to assess the adoption and impact of this semi-mechanization in North-Benin. A multinomial probit model is estimated to analyze the factors which explain the adoption of each type of technology. A counterfactual approach drawing from a modern evaluation theory is used to evaluate the impact of this...
Tipo: Journal Article Palavras-chave: Adoption; Impact; Shea butter; Semi mechanization; Income; Benin; Farm Management.
Ano: 2010 URL: http://purl.umn.edu/96186
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Adoption of an orphan infant in wild black and gold howler monkeys (Alouatta caraya) Mastozool. neotrop.
Pavé,Romina; Kowalewski,Martín M.; Zunino,Gabriel E..
This study reports the first case of adoption in a wild group of black and gold howler monkeys (Alouatta caraya). After the death of one adult female with a dependent infant, her daughter with a dependent infant adopted the orphan of similar age of her own infant. We recorded the activity and proximity between the adopter and both infants during two following days. The adoptive female appeared to provide equal treatment toward both infants and the orphan seemed to recognize the female as his mother. This report suggests that adult females of A. caraya can rear two infants at once.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Adoption; Alloparental care; Alouatta caraya; Kin selection; Orphans.
Ano: 2010 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832010000100021
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Adoption of Best Management Practices to Control Weed Resistance By Cotton, Corn, and Soybean Growers AgEcon
Frisvold, George B.; Hurley, Terrance M.; Mitchell, Paul D..
This study examined adoption of ten best management practices (BMPs) to control weed resistance to herbicides. Using data from a survey of 1,205 U.S. cotton, corn, and soybean growers, count data models were estimated to explain the total number of practices frequently adopted. Ordered probit regressions were used to explain the frequency of individual BMP adoption. Growers practicing a greater number of BMPs frequently (a) had more education, but less farming experience; (b) grew cotton, (c) expected higher yields relative to the county average; and (d) farmed in counties with a lower coefficient of variation (CV) for yield of their primary crop. Yield expectations and variability were significant predictors of the frequency of adoption of individual...
Tipo: Conference Paper or Presentation Palavras-chave: Weeds; Herbicide; Resistance management; Corn; Cotton; Soybeans; Adoption; Crop Production/Industries; Farm Management; Production Economics; Research and Development/Tech Change/Emerging Technologies; Q12; Q16.
Ano: 2009 URL: http://purl.umn.edu/49432
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Adoption of Conservation Agriculture Technologies by Smallholder Farmers in the Shamva District of Zimbabwe: A Tobit application AgEcon
Chiputwa, Brian; Langyintuo, Augustine S.; Wall, Patrick.
Conventional agricultural practices such as the use of the moldboard plough are no longer sustainable due to their extensive soil degradation effects. As a panacea, several Conservation Agriculture (CA) technologies have been promoted to improve soil structure and water conservation. However, adoption of these technologies has been resisted by smallholder farmers and identifying causes of the low adoption rates to facilitate intervention strategies remains a challenge to development practitioners. Using data from 100 farmers, this paper uses a Tobit application to assess the underlying factors important in determining farmers’ adoption of zero-tillage, crop rotation and contour ridging technologies. Empirical results suggest that adoption and use intensity...
Tipo: Conference Paper or Presentation Palavras-chave: Conservation Agriculture (CA); Conventional Farming (CF) technology; Tobit Model; Adoption; Agricultural and Food Policy; Community/Rural/Urban Development; Farm Management.
Ano: 2010 URL: http://purl.umn.edu/98851
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Adoption of Environmental Best Practice Amongst Dairy Farmers AgEcon
Bewsell, Denise; Kaine, Geoff.
The adoption of environmental management practices is addressed in this paper. The use of consumer behaviour theory and a market research approach is discussed by describing how it was used in the study. Qualitative methods were used to gather data from dairy farmers in four New Zealand catchments. The environmental practices explored were; excluding stock from waterways, reducing phosphorus use, improving soil macroporosity, managing effluent and improving the efficiency of border-dyke irrigation. The findings are discussed, highlighting that farm contextual factors influenced farmers’ decision making in terms of adopting environmental management practices. The results suggest that environmental practices need to be linked to farm context. This should...
Tipo: Conference Paper or Presentation Palavras-chave: Environment; Adoption; Dairy farms; Context; Agricultural and Food Policy; Community/Rural/Urban Development; Consumer/Household Economics; Crop Production/Industries; Environmental Economics and Policy; Farm Management.
Ano: 2005 URL: http://purl.umn.edu/98494
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Adoption of Genetically Modified Eggplant in India: An Ex Ante Analysis AgEcon
Kolady, Deepthi; Lesser, William H..
Replaced with revised version of paper 07/28/05.
Tipo: Conference Paper or Presentation Palavras-chave: Genetically Modified Crops; Bt Eggplant; Adoption; India; Research and Development/Tech Change/Emerging Technologies; O13; O14; O33.
Ano: 2005 URL: http://purl.umn.edu/19262
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Adoption of Phytase by Livestock Farmers AgEcon
Stahlman, Michael; McCann, Laura M.J.; Gedikoglu, Haluk.
Phytase represents a potential win/win management practice for non-ruminant producers since it can reduce the need for phosphorous supplementation and also result in lower phosphorous runoff. Cost of phytase has decreased and cost of phosphorous has increased. The reported adoption rate for phytase for non-ruminants was 17.2 percent, however it is currently added to virtually all swine and poultry premixes by feed manufacturers due to the cost savings. People were more likely to say they use phytase if they think it is profitable, not time intensive, and improves water quality.
Tipo: Conference Paper or Presentation Palavras-chave: Manure; Phytase; Phosphorous; Adoption; Environmental Economics and Policy; Livestock Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/43235
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Adoption of Technology and Its Impact on Profitability of Young and Beginning Farmers: A Quantile Regression Approach AgEcon
Adhikari, Arun; Mishra, Ashok K.; Chintawar, Sachin.
Tipo: Conference Paper or Presentation Palavras-chave: Adoption; Technology; Profitability; GM crops; Quantile Regression; Agribusiness; Agricultural Finance; Farm Management.
Ano: 2009 URL: http://purl.umn.edu/46830
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An assessment of five different theoretical frameworks to study the uptake of innovations AgEcon
Botha, Neels; Atkins, Kris.
There are several theoretical frameworks one can draw upon to study the adoption process. Extension Theory, Bounded Rationality, Diffusion Theory, the Theory of Reasoned Action and Consumer Behaviour Theory were of particular interest to us. In assessing the frameworks we looked for contradictions, and how and whether these frameworks could be used to study the adoption process. The assessment was done by using our own conceptual framework of the adoption process and we discuss the results in this paper. We found that the different frameworks don‘t contradict each other and when combined into our conceptual framework they offer very useful constructs for studying the adoption process.
Tipo: Conference Paper or Presentation Palavras-chave: Adoption; Innovations; Theory; Agricultural and Food Policy; Environmental Economics and Policy; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2005 URL: http://purl.umn.edu/98497
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AN ECONOMIC ASSESSMENT OF THE WHOLE-FARM IMPACT OF PRECISION AGRICULTURE AgEcon
Olson, Kent D.; Elisabeth, Pascal.
The full impact of an investment in a management information system (MIS), such as precision agriculture (PA), comes from improved managerial decision making throughout the whole farm and not just from improvements in a specific part of the farm. This study was conducted to determine whether the adoption of PA had a positive impact on whole-farm profitability. To overcome problems of simultaneity and self-selection in the adoption decision of PA, this study used a two stage econometric model using data from farms in Southwest Minnesota. The PA adoption decision was evaluated in the first stage, and the impact of adopting PA was evaluated in the second stage. The whole farm rate of return to assets (ROA) was used to measure the impact of PA. For all 212...
Tipo: Conference Paper or Presentation Palavras-chave: Precision agriculture; Economics; Adoption; Profitability; Agribusiness.
Ano: 2003 URL: http://purl.umn.edu/22119
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An Economic Evaluation of Adoption of the Conservation Compliance Program: A Stochastic Dominance Approach AgEcon
Govindasamy, Ramu; Cochran, Mark J..
Using stochastic dominance, this paper examines the adoption of the Conservation Compliance Program (CCP) in twelve Iowa soil types. Subsidies necessary to compensate producers for the increased risk of compliance strategies are estimated. Results indicate that to promote voluntary compliance with the CCP, the government should provide a subsidy of between $4.55 to $19.88 per acre, depending on the soil type.
Tipo: Journal Article Palavras-chave: Conservation compliance; Stochastic dominance; Adoption; Risk premium; Erosion; Agribusiness; Environmental Economics and Policy; Research Methods/ Statistical Methods.
Ano: 1997 URL: http://purl.umn.edu/90409
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ANALYSING THE LOW ADOPTION OF WATER CONSERVATION TECHNOLOGIES BY SMALLHOLDER FARMERS IN SOUTHERN AFRICA AgEcon
Perret, Sylvain R.; Stevens, Joe B..
Natural resource degradation and water scarcity are a global concern, which typically threatens the sustainability of smallholder farmers' livelihoods in semi-arid developing areas. As part of research efforts, a number of water-conservation technologies (WCT) have been developed, yet with low adoption rates in smallholder farming environments. This paper discusses the concepts of adoption and innovation, comparing the perspectives of research operators to the ones of smallholder farmers. Discrepancies are highlighted and ultimately explain low uptake of technologies by farmer. Then it addresses socio-economic factors affecting such adoption. It is argued that WCT show specific traits: (1) diversity and applicability to different time and spatial...
Tipo: Working or Discussion Paper Palavras-chave: Adoption; Innovation; Water conservation; Technologies; Collective action; Property rights; Sustainability; Livelihoods; Resource /Energy Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/18028
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