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Registros recuperados: 34
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Factors Influencing Cotton Farmers’ Perceptions about the Importance of Information Sources in Precision Farming Decisions AgEcon
Velandia, Margarita M.; Lambert, Dayton M.; Mendieta, Maria P.; Roberts, Roland K.; Larson, James A.; English, Burton C.; Rejesus, Roderick M.; Mishra, Ashok K..
Information generated by precision farming technologies is of particular importance to producers. Precision farming technologies implies the ability to improve the management of production factors using site-specific information. This study examines factors influencing cotton farmers’ perceptions about the importance of crop consultants, farm input dealerships, Extension, other farmers, trade shows, the Internet and printed news/media for making precision farming decisions using a rank ordered logit model (ROLM). Results suggest that age, land tenure, income, percentage of income from farming, and location may affect farmers’ perceptions about the importance of different information sources when making decisions about precision farming technologies....
Tipo: Conference Paper or Presentation Palavras-chave: Information-source preferences; Rank Ordered Logit Model; Precision Farming; Production Economics; Research Methods/ Statistical Methods; Q16; C25.
Ano: 2011 URL: http://purl.umn.edu/103752
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Reasons for Adopting Precision Farming: A Case Study of U.S. Cotton Farmers AgEcon
Pandit, Mahesh; Mishra, Ashok K.; Paudel, Krishna P.; Larkin, Sherry L.; Rejesus, Roderick M.; Lambert, Dayton M.; English, Burton C.; Larson, James A.; Velandia, Margarita M.; Roberts, Roland K.; Kotsiri, Sofia.
We used survey data collected from cotton farmers in 12 southern U.S. states to identify factors influencing cotton farmers’ decisions to adopt precision farming. Using a seemingly unrelated ordered probit model, we found that younger, educated and computer literate farmers chose precision farming for profit reason. Farmers who perceived precision farming to be profitable adopt it to be at the forefront of agricultural technology. We also found that farmers who were concerned with environment emphasize precision farming adoption as a reason to improve environmental quality. Our results also indicate that farmers in coastal states such as Alabama, Mississippi, and North Carolina chose environmental benefits as a reason for precision farming technology...
Tipo: Conference Paper or Presentation Palavras-chave: Precision technologies; Seemingly unrelated ordered probit; Cotton; Agricultural Finance; Farm Management; Q16; C35.
Ano: 2011 URL: http://purl.umn.edu/98575
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Farmers' Perceptions about Spatial Yield Variability and Precision Farming Technology Adoption: An Empirical Study of Cotton Production in 12 Southeastern States AgEcon
Kotsiri, Sofia; Rejesus, Roderick M.; Marra, Michele C.; Velandia, Margarita M..
This paper examines how cotton farmers' perceptions about their spatial yield variability influence their decision to adopt precision farming technologies. Utilizing cross-section survey data from 12 Southeastern states and a two-step econometric modeling approach, we find that farmers who perceive their yields as more spatially heterogeneous will more likely use site specific information gathering technologies and apply their inputs at a variable rate. In addition, our empirical analysis shows that perceptions about future profitability and importance of precision farming, along with socio-economic factors, also drive the technology adoption decision. These results have implications for producers contemplating the variable rate management decisions, as...
Tipo: Conference Paper or Presentation Palavras-chave: Multinomial logit; Endogeneity; Variable rate input applications; Site specific information gathering technology; Yield perceptions; Agribusiness; Farm Management; Production Economics; Productivity Analysis; Q12; Q16.
Ano: 2011 URL: http://purl.umn.edu/98689
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Can Crop Insurance Premiums be Reliably Estimated? AgEcon
Ramirez, Octavio A.; Carpio, Carlos E.; Rejesus, Roderick M..
The objective of this paper is to compare the accuracy of crop insurance rating methods based on historical liability and indemnity data (similar to the procedure currently used by the Risk Management Agency) and “yield distribution” approaches. Estimated rates are compared to “true” rates using empirically-grounded simulation procedures that take into account common data availability constraints. Simulation results suggest that farm and county level rate estimates using the “yield distribution” approach are significantly more accurate than those based on historical indemnity and liability records.
Tipo: Conference Paper or Presentation Palavras-chave: Crop insurance premiums; Non-normal distributions; Simulation methods; Agribusiness; Agricultural Finance; Risk and Uncertainty.
Ano: 2009 URL: http://purl.umn.edu/49465
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Sources of Productivity Growth in Wheat: A Review of Recent Performance and Medium- to Long-Term Prospects AgEcon
Rejesus, Roderick M.; Heisey, Paul W.; Smale, Melinda.
Sources of yield growth in wheat are investigated based on a stylized framework of technical change. Evidence suggests that the relative contribution of input intensification to yield growth has diminished in recent years and is likely to continue to decline in the future. One potential source of yield growth in wheat during the medium to long term is improved efficiency of input use, rather than input intensification, through sustainable wheat production practices rather than pure input increases. Other large gains could be made with continuous adoption of newer and better modern varieties based on advances in wheat breeding. Wide crossing and biotechnology could improve the stability of wheat yields in the intermediate term; their long-term impact on...
Tipo: Working or Discussion Paper Palavras-chave: Crop Production/Industries.
Ano: 1999 URL: http://purl.umn.edu/7693
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Impact Assessment of Bt Corn Adoption in the Philippines AgEcon
Mutuc, Maria Erlinda M.; Rejesus, Roderick M.; Pan, Suwen; Yorobe, Jose M., Jr..
This article examines the impact of Bt corn adoption in the Philippines using an econometric approach that addresses simultaneity, selection, and censoring problems. Although previous literature emphasizes the importance of simultaneity and selection problems, this is the first study that addresses the issue of censoring in estimating the effects of Bt corn adoption at the farm in a developing country context. We show that Bt corn adoption provides modest but statistically significant increases in farm yields and profits. Furthermore, our results provide some evidence of inference errors that can potentially arise when censoring in the pesticide application variable is ignored in the estimation procedures.
Tipo: Article Palavras-chave: Bt; Censoring; Corn; Farm level impacts; Genetically modified crops; Pesticide use; Technology adoption; International Development; Production Economics; Q12; Q16.
Ano: 2012 URL: http://purl.umn.edu/120452
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Determinants of Anomalous Prevented Planting Claims: Theory and Evidence from Crop Insurance AgEcon
Rejesus, Roderick M.; Lovell, Ashley C.; Little, Bertis B.; Cross, Mike H..
This study examines the factors that determine the likelihood of submitting a potentially fraudulent prevented planting claim. A theoretical model is developed and the theoretical predictions are empirically verified by utilizing a binary choice model and crop insurance data from the southern United States. The empirical results show that insured producers with higher prevented planting coverage, lower dollar value of expected yield, and a history of submitting prevented planting claims are more likely to submit an anomalous prevented planting claim. The empirical model also suggests revenue insurance plans may be more vulnerable to prevented planting fraud than the traditional yield-based insurance plan. Results of this study can be valuable to compliance...
Tipo: Journal Article Palavras-chave: Crop Production/Industries.
Ano: 2003 URL: http://purl.umn.edu/31632
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The Relevance of Information Sources on Adoption of Precision Farming Technologies by Cotton Producers AgEcon
Garcia-Jimenez, Carlos I.; Mishra, Ashok K.; Paxton, Kenneth W.; Lambert, Dayton M.; Velandia, Margarita M.; Rejesus, Roderick M.; Segarra, Eduardo.
Replaced with revised version of paper 02/16/11.
Tipo: Conference Paper or Presentation Palavras-chave: Strategic communication; Competitiveness; Extension; Economics of information; Technology diffusion; Technology supply; Communication methods; Knowledge management; Production Economics; Research and Development/Tech Change/Emerging Technologies; Teaching/Communication/Extension/Profession; D22; D80; D82; D83; Q12; Q16.
Ano: 2010 URL: http://purl.umn.edu/98123
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Impacts of an Agricultural Development Program for Poor Coconut Producers in the Philippines: An Approach Using Panel Data and Propensity Score Matching Techniques AgEcon
Rodriguez, Divina Gracia P.; Rejesus, Roderick M.; Aragon, Corazono T..
Using panel data econometric techniques and propensity score matching procedures, this study evaluates the impact of the MAUNLAD agricultural development program - a program designed to help alleviate poverty in Philippine coconut-producing communities. Our results indicate that the program had a significant positive mean effect on the recipients' total net farm income. Moreover, the probability of being in poverty is shown to decrease when a poor coconut producer participates in the program. The program's emphasis on training, intercropping, and livestock integration, as well as the more participatory approach taken, contributed to the strong positive impact of the program.
Tipo: Journal Article Palavras-chave: Coconut farmers; Panel data econometric techniques; Poverty alleviation program; Propensity score matching (PSM); Crop Production/Industries; International Development.
Ano: 2007 URL: http://purl.umn.edu/7081
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EX POST MORAL HAZARD IN CROP INSURANCE: COSTLY STATE VERIFICATION OR FALSIFICATION? AgEcon
Rejesus, Roderick M..
This article examines the extent to which actual crop insurance indemnification behavior conforms to the theoretical predictions of two ex post moral hazard models – costly state verification and costly state falsification. A nonparametric regression technique is used to estimate the crop insurance indemnification profile for non-irrigated cotton in Texas. The results suggest that indemnification behavior in crop insurance is more in line with the costly state falsification paradigm. Thus, crop insurers seem to indemnify based on the assumption that it is not easy to verify actual ex post loss magnitude and eliminate the asymmetric information held by the insured farmers.
Tipo: Conference Paper or Presentation Palavras-chave: Risk and Uncertainty.
Ano: 2002 URL: http://purl.umn.edu/19650
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OPPORTUNITY COSTS, SHARE LEASING, AND PREVENTED PLANTING CLAIMS IN CROP INSURANCE AgEcon
Rejesus, Roderick M.; Escalante, Cesar L.; Cross, Mike H..
This paper determines whether the opportunity costs of share leasing and the share amounts of farmers/tenants affect the likelihood of submitting a prevented planting claim. Results from our probit analysis shows that lower opportunity costs of share leasing and higher farmer/tenant share amount can increase the probability of submitting a prevented planting. These results have potential implications for setting prevented planting buy-up rates and crop insurance compliance procedures.
Tipo: Conference Paper or Presentation Palavras-chave: Risk and Uncertainty.
Ano: 2003 URL: http://purl.umn.edu/35017
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Farm Level Impacts of Bt Corn Adoption in a Developing Country: Evidence from the Philippines AgEcon
Mutuc, Maria Erlinda M.; Pan, Suwen; Rejesus, Roderick M.; Yorobe, Jose M., Jr..
This article examines the ex post farm-level impacts of Bt corn adoption in the Philippines. Using an econometric approach that addresses simultaneity, selection, and censoring problems, we show that Bt corn adoption provides modest but statistically significant increases in farm-level yields and profits. Furthermore, our results suggest that farm-level yield and profit impacts of Bt corn adoption are underestimated when censoring in the pesticide application variable is not considered in the estimation procedures. Previous literature have emphasized the importance of simultaneity and selection problems but this is the first study that have raised the issue of censoring problems in estimating the farm-level effects of Bt corn adoption.
Tipo: Conference Paper or Presentation Palavras-chave: Bt; Censoring; Corn; Farm level impacts genetically modified crops; Pesticide use; Technology adoption; Crop Production/Industries; Q12; Q16.
Ano: 2007 URL: http://purl.umn.edu/9891
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Economics of Management Zone Delineation in Cotton Precision Agriculture AgEcon
Velandia, Margarita M.; Rejesus, Roderick M.; Segarra, Eduardo; Bronson, Kevin.
This paper develops a management zone delineation procedure based on a spatial statistics approach and evaluates its economic impact for the case of Texas cotton production. With the use of an optimization model that utilizes a yield response function estimated through spatial econometric methods, we found that applying variable N rates based on the management zones delineated would result in higher cotton yields and higher net returns, above Nitrogen cost, relative to uniformly applying a single N rate for the whole field. In addition, a variable rate N application using the delineated management zones produced higher net returns, above Nitrogen cost, relative to a variable N rate system where the zones are based solely on landscape position. This is...
Tipo: Conference Paper or Presentation Palavras-chave: Management Zones; Exploratory Spatial Data Analysis; Site-Specific Nitrogen Management; Cotton Precision Agriculture.; Crop Production/Industries; Q1; Q16.
Ano: 2006 URL: http://purl.umn.edu/35387
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Changes in Producers’ Perceptions of Within-field Yield Variability Following Adoption of Cotton Yield Monitors AgEcon
Rejesus, Roderick M.; Marra, Michele C.; Roberts, Roland K.; English, Burton C.; Larson, James A.; Paxton, Kenneth W..
Tipo: Conference Paper or Presentation Palavras-chave: Precision Farming; Risk; Yield Monitor; Yield Variability; Yield Perceptions; Spatial Yield Distributions; Within Field Variability; Farm Management; Production Economics; Risk and Uncertainty; Q12; Q16.
Ano: 2010 URL: http://purl.umn.edu/60971
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Can Crop Insurance Premiums Be Reliably Estimated? AgEcon
Ramirez, Octavio A.; Carpio, Carlos E.; Rejesus, Roderick M..
This paper develops and applies a methodology to assess the accuracy of historical loss-cost rating procedures, similar to those used by the U.S. Department of Agriculture’s Risk Management Agency (RMA), versus alternative parametric premium estimation methods. It finds that the accuracy of loss-cost procedures leaves much to be desired, but can be markedly improved through the use of alternative methods and increased farm-level yield sample sizes. Evidence suggests that the high degree of inaccuracy in crop insurance premium estimations through historical loss-cost procedures identified in the paper might be a major factor behind the need for substantial government subsidies to keep the program solvent.
Tipo: Journal Article Palavras-chave: Agricultural subsidies; Crop insurance premium estimation; Loss-cost procedures; Risk Management Agency; Agricultural and Food Policy; Agricultural Finance; Farm Management; Risk and Uncertainty.
Ano: 2011 URL: http://purl.umn.edu/107091
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SHARE TENANCY, OWNERSHIP STRUCTURE, AND PREVENTED PLANTING CLAIMS IN CROP INSURANCE AgEcon
Rejesus, Roderick M.; Escalante, Cesar L.; Lovell, Ashley C..
A theoretical model based on opportunity cost and expected utility principles establishes linkages between the likelihood of prevented planting claims in crop insurance, existing share leasing arrangements and internal farm business structures. Results of probit estimation procedures indicate that simpler internal business structures and a more dominant farmer-tenant leasing position can increase the probability of submitting a prevented planting claim.
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries; Risk and Uncertainty.
Ano: 2003 URL: http://purl.umn.edu/22095
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Food Calorie Intake under Grain Price Uncertainty: Evidence from Rural Nepal AgEcon
Pan, Suwen; Fang, Cheng; Rejesus, Roderick M..
This study evaluates the effects of grain output price uncertainty on the farm income of rural households and, consequently, how this uncertainty influences caloric intake through changes in farm income. Using a rural household data set, augmented with output price uncertainty measures calculated from historical time-series data, we find that grain output price uncertainty tends to decrease crop production income of rural households. In addition, we find that higher crop income from production increases calorie intake of rural households. Taken together, these results suggests that output price uncertainty during the production process may tend to reduce caloric intake of rural Nepalese households since the price uncertainty negatively affects the crop...
Tipo: Conference Paper or Presentation Palavras-chave: Food Calorie Intake; Price Uncertainty; Nepal; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; D12; O13; Q11; Q12.
Ano: 2008 URL: http://purl.umn.edu/6198
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Changing Pattern in U.S. Apparel Trade Post-2008: Implications for U.S. Cotton AgEcon
Mutuc, Maria Erlinda M.; Mohanty, Samarendu; Malaga, Jaime E.; Rejesus, Roderick M..
In 1995, the Agreement on Textiles and Clothing (ATC) provided for the calculated liberalization of the textiles and apparel sectors over a 10-year period ending in 2005, except for some safeguard measures ending on December 31, 2008. These safeguard measures allowed for import restrictions by the U.S. on certain categories of cotton apparel from China. Using a 57-equation, annual econometric, price equilibrium simulation model of the U.S. cotton and cotton apparel markets, results point to lower cotton apparel prices in the U.S. by as much as $ 0.25 per kilogram while cotton prices decline by less than $ 0.01 per kilogram once these safeguards expire. In the baseline scenario, quotas are removed in 2009-2015 except for the safeguards. In the...
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries; International Relations/Trade.
Ano: 2008 URL: http://purl.umn.edu/6066
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Factors Influencing Artisanal Fisherfolks' Level of Support for Fishery Regulations: An Approach Using Alternative Ordered Logit Models AgEcon
Garcia, Alexis Arthur B.; Rejesus, Roderick M.; Genio, Emmanuel L..
This article examines factors influencing fishers' decision to support fishery regulations in coastal communities in the Philippines. Using the partial proportional odds variant of the ordered logit model, we show that higher education levels, implementation of regulatory ordinances, and the effectiveness of law enforcement significantly affect the likelihood of supporting fishery regulations in coastal communities.
Tipo: Conference Paper or Presentation Palavras-chave: Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/6791
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Farmland Control Decisions under Different Intertemporal Risk Behavioral Constructs AgEcon
Escalante, Cesar L.; Rejesus, Roderick M..
Simulation-optimization techniques are employed to analyze changes in farmland control arrangements as a result of using different constructs of intertemporal risk behavior. Risk behavior based on constant absolute risk aversion (CARA) and constant relative risk aversion (CRRA) mean-standard deviation functions are used to achieve this objective. Specfically, a multi-period programming framework for a representative grain farm is developed to explore farmland control decisions under these two behavioral assumptions. Our results suggest that the use of a CRRA behavioral construct in analyzing farmland control decisions produce predictions that are more consistent with observed farm behavior.
Tipo: Conference Paper or Presentation Palavras-chave: Farm Management.
Ano: 2005 URL: http://purl.umn.edu/19113
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