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Registros recuperados: 27
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A century of crop yield density estimation with perspectives 31
Pujula, Aude Liliana; Maradiaga, David Isaias; Zapata, Hector O.; Dicks, Michael R..
Tipo: Conference Paper or Presentation Palavras-chave: Crop Production/Industries.
Ano: 2010 URL: http://purl.umn.edu/61909
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ACRE (Average Crop Revenue Election) Farm Program: Provisions, Policy Background, and Farm Decision Analysis 31
Zulauf, Carl R.; Dicks, Michael R.; Vitale, Jeffrey D..
Tipo: Journal Article Palavras-chave: Agricultural and Food Policy; H100.
Ano: 2008 URL: http://purl.umn.edu/94670
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Analysis of Revenue Assurance Proposals 31
Dicks, Michael R.; Anderson, Kim B..
Tipo: Journal Article Palavras-chave: Financial Economics.
Ano: 2007 URL: http://purl.umn.edu/92860
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APPLYING LISA CONCEPTS ON SOUTHERN FARMS OR CHANGING FARM PHILOSOPHIES: DISCUSSION 31
Dicks, Michael R..
Tipo: Journal Article Palavras-chave: Farm Management.
Ano: 1991 URL: http://purl.umn.edu/30293
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Can Faculty Change Initial Impressions on Student Evaluations of Teaching? 31
Pruitt, J. Ross; Dicks, Michael R.; Tilley, Daniel S..
Expectations of a course and instructor are formed prior to engagement in the course which affect learning. By understanding the factors that are involved in setting these expectations, instruction and student learning may be improved. This paper seeks to determine if student expectations set the basis for course and instructor appraisal and what factors affect these expectations or changes from expectations. Results indicate that while instructor appraisal does not change over the course of the semester, variables related to instructor appraisal do change. How worthwhile students view the course can also positively or negatively impact overall course appraisal.
Tipo: Conference Paper or Presentation Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 2008 URL: http://purl.umn.edu/6491
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Changes in the Spatial Allocation of Cropland in the Ft. Cobb Watershed as a Result of Environmental Restrictions 31
Adams, David L.; Boyer, Tracy A.; Dicks, Michael R..
Pollution runoff estimates from SWAT are used in a mathematical programming model to optimally model site-specific crop and conservation practices for pollution abatement in the Ft. Cobb watershed in Southwestern Oklahoma. Results indicate the tradeoffs between producer income, sediment and nutrient runoff and the spatial allocation of crops in the watershed.
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy.
Ano: 2005 URL: http://purl.umn.edu/35575
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Contemporary Issues in Estimating Yield Distributions 31
Pujula, Aude Liliana; Maradiaga, David Isaias; Dicks, Michael R..
In the research area of crop yield density estimation and in particular in risk analysis, little emphasis has been given to the appropriateness of transformation methods (e.g., removing a linear trend) and how such transformations impact the reliability of the empirical distribution functions and the resulting probability estimates. Similarly, there is little consensus on the impact of environmental variables (e.g., rainfall and temperature) on empirical distributions of yields. Using historical county corn yield data for Arkansas and Louisiana and nonparametric methods, this empirical analysis shed light on the importance of data transformation in crop risk analysis. Results demonstrate that inappropriate data treatment can lead to misestimation of...
Tipo: Conference Paper or Presentation Palavras-chave: Probability Density Estimation; Nonparametric; Kernel; Nonstationary; Unit Roots; Data Transformations; Corn Yields; Weather; Production Economics; Research Methods/ Statistical Methods; Risk and Uncertainty.
Ano: 2010 URL: http://purl.umn.edu/56527
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Determinants of Students’ First Impressions of Instructors and Courses 31
Dicks, Michael R.; Pruitt, J. Ross; Tilley, Daniel S..
Students evaluated instructors and courses in the first two weeks of the fall semester to determine the factors that form impressions in the early stages of the semester. Results indicate differences exist between upper and lower division courses with presentation of material and perceived workload as key factors that students use to form first impressions.
Tipo: Conference Paper or Presentation Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 2008 URL: http://purl.umn.edu/6801
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Effects of the Conservation Reserve Program on Elevator Merchandising Margins in Oklahoma 31
Adam, Brian D.; Hong, Seung Jee; Dicks, Michael R..
The Conservation Reserve Program (CRP) takes cropland out of production for 10 years, reducing grain supplies available to elevators. Results suggest that the program has negatively impacted elevator merchandising margins, but that elevators adjusted rather quickly to CRP changes, making most of the adjustment within 1 year. The reduction in margins reflects an element of pressure on agribusiness that has not been measured in previous studies.
Tipo: Journal Article Palavras-chave: Agribusiness; Conservation Reserve Program; Country elevators; Land retirement programs; Merchandising margins; Q1; Q2; D4; L1.
Ano: 2004 URL: http://purl.umn.edu/42835
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ESTIMATING THE IMPACT OF CONSERVATION RESERVE PROGRAM CONTRACT EXPIRATION ON CORN AND WHEAT PRICES 31
Garrison, Carl O.; Dicks, Michael R.; Adam, Brian D..
The Conservation Reserve Program reduced available cropland in the United States by 34 million acres under the first nine signup periods (1986-1990). Among these are ten million acres with wheat base and four million acres with corn base, which could potentially produce 288 million bushels of wheat and 340 million bushels of corn per year upon contract expiration. The impacts of expiring CRP contacts on the production and prices of wheat and corn in the United States are estimated. Based on past production practices and post-CRP land-use intentions of contract holders, 48.2% of base acres enrolled in CRP will return to production. Under this scenario, wheat prices will decline by more than 7% and corn prices by more than 2% by 2000, unless ARP levels,...
Tipo: Journal Article Palavras-chave: Demand and Price Analysis.
Ano: 1994 URL: http://purl.umn.edu/31314
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Fertilizer Demand for Biofuel and Cereal crop Production in the United States 31
Acheampong, Kwame; Dicks, Michael R..
The emergence of biofuel production has impacted almost all sectors of the agricultural industry and the general economy and has produced a large body of research into how increased production of biofuels will impact the agricultural sector and the general economy. All research is in agreement that total biomass production will be required to increase to meet food and fuel demands. The increase in biomass will, of necessity, require increased use of fertilizers. Research on fertilizer demand has been scarce over the last decade. Because of the recent increase in the demand for grain crops and livestock in an era with little excess capacity in commodity production, the pressure to increase output will fall to increased use of fertilizers. In addition,...
Tipo: Presentation Palavras-chave: Nitrogen demand; Corn production; Fertilizer prices; Biofuel production.; Agricultural and Food Policy; Production Economics; Resource /Energy Economics and Policy.
Ano: 2012 URL: http://purl.umn.edu/119798
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Impact of United States Corn-Based Ethanol Production on Land Use 31
Sobowale, Flakkeh; Dicks, Michael R.; Adam, Brian D.; Campiche, Jody L..
This study measures the impact of corn-based ethanol production in the United States on land use in other countries, or indirect land use. Indirect land use is a change from non-cropland to cropland (e.g. deforestation) that may occur in response to increasing scarcity of cropland. As farmers worldwide respond to higher crop prices in order to maintain the global food supply and demand balance, pristine lands are cleared and converted to new cropland to replace the crops for feed and food that were diverted elsewhere to biofuel production. The results show that increasing ethanol production in the US has a positive and significant relation to U.S corn price. However, U.S. corn price does not have a significant impact on changes in corn acreage in Brazil...
Tipo: Presentation Palavras-chave: Ethanol; Indirect land use; Agricultural and Food Policy; Demand and Price Analysis; Land Economics/Use; Marketing.
Ano: 2012 URL: http://purl.umn.edu/119800
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Impact of United States Corn-based Ethanol Production on Land Use 31
Sobowale, Folakemi; Dicks, Michael R.; Campiche, Jody L..
The purpose of this research was to determine whether indirect land use occurs and if so to what extent. Indirect land use is a change from non-cropland to cropland (e.g. deforestation) that may occur in response to increasing scarcity of cropland. As farmers worldwide respond to higher crop prices in order to maintain the global food supply and demand balance, pristine lands are cleared and converted to new cropland to replace the crops for feed and food that were diverted elsewhere to biofuels production. We examine the impact of corn-based ethanol production in the United States on land use in other countries.
Tipo: Conference Paper or Presentation Palavras-chave: Ethanol; Energy; Biofuel; Pristine lands.; Agricultural and Food Policy; Environmental Economics and Policy; Land Economics/Use; Production Economics; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2011 URL: http://purl.umn.edu/98854
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Land Use Implications of Expanding Biofuel Demand 31
Dicks, Michael R.; Campiche, Jody L.; Torre Ugarte, Daniel de la; Hellwinckel, Chad M.; Bryant, Henry L.; Richardson, James W..
The Renewable Fuel Standard mandates in the Energy Independence and Security Act of 2007 will require 36 billion gallons of ethanol to be produced in 2022. The mandates require that 16 of the 36 billion gallons must be produced from cellulosic feedstocks. The potential land use implications resulting from these mandates were examined using two methods, the POLYSYS model and a general equilibrium model. Results of the POLYSYS analysis indicated that 72.1 million tons of corn stover, 23.5 million tons of wheat straw, and 24.7 million acres would be used to produce 109 million tons of switchgrass in 2025 to meet the mandate. Results of the CGE analysis indicated that 10.9 billion bushels of corn grain, 71 million tons of corn stover, and 56,200 tons of...
Tipo: Journal Article Palavras-chave: Cellulosic ethanol; Corn stover; Grain ethanol; Renewable fuel standard; Switchgrass; Crop Production/Industries; Demand and Price Analysis; Environmental Economics and Policy; Land Economics/Use; Resource /Energy Economics and Policy; Q15; Q42.
Ano: 2009 URL: http://purl.umn.edu/53091
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Methods for Estimating Economic Damages from Environmental Contamination 31
Shideler, David W.; Dicks, Michael R..
While significant attention has been given to the decrease in property values associated with environmental contamination (i.e., stigma effects), little attention has been given to the stigma impacts on the local community as a whole. In addition, most estimates of stigma damages have been performed within a community, using distance from contamination or comparing contamination and non contamination areas in the community. In this article we determine stigma damages by analyzing property values in comparable communities and develop the rationale for estimating the community impact associated with environmental contamination that extends beyond the impact on individual property owners. These impacts were estimated for the environmental contamination...
Tipo: Conference Paper or Presentation Palavras-chave: Environmental damages; Environmental contamination; Environmental Economics and Policy; Q51.
Ano: 2011 URL: http://purl.umn.edu/98808
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Potential Biomass Yields in the South Central US 31
Basnet, Arjun; Depona, Theo; Hedges, Wesley; Dicks, Michael R..
This paper describes research to create a national database of switchgrass supply as part of the biomass program launched by the Department of Energy. The paper provides an estimate of county level switchgrass yield data for the state of Oklahoma. The estimates are made for the top five most productive and abundant soils for each county in Oklahoma. A simple approach of ratio calculation and estimation is used to predict the switchgrass yield of one soil type by comparing it with the yield of several other crops in another soil type. The data for switchgrass yield for a particular soil type are obtained from the state research experiment stations. The yields for other crops for the top five soils are obtained from the NASS data sources. Switchgrass supply...
Tipo: Conference Paper or Presentation Palavras-chave: Biofuel; Switchgrass; Ratio Estimation; South Central; Oklahoma; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Production Economics; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; Resource /Energy Economics and Policy.
Ano: 2011 URL: http://purl.umn.edu/98792
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Potential Economic Impacts of the Managed Haying and Grazing Provision of CRP 31
Dickson, Amanda; Dicks, Michael R..
According to the Executive Order 12866, a qualitative and quantitative assessment for any Federal mandate resulting in annual expenditures of $100 million or more is required. This study determines how many of the approximately 34.5 million acres of CRP land is brought back in economic use, how that use is allocated between grazing and haying, and the economic impact.
Tipo: Working or Discussion Paper Palavras-chave: CRP; Land allocation; Economic impact; Agricultural and Food Policy; Environmental Economics and Policy; Land Economics/Use; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008 URL: http://purl.umn.edu/46807
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Potential Economic Impacts of the Managed Haying and Grazing Provision of the Conservation Reserve Program 31
Campiche, Jody L.; Dicks, Michael R.; Shideler, David W.; Dickson, Amanda.
The Food Security and Rural Investment Act of 2002 included a new provision that allowed managed haying and grazing (including the harvest of biomass), if consistent with the conservation of soil, water quality, and wildlife habitat, in return for partial reductions in the annual CRP payments. The legislation provided for managed (or limited use) haying and grazing on the CRP acreage rather than prohibiting all use. This research analyzed whether or not the alternative grazing and haying scenarios would dramatically impact the price of beef or hay, and we estimated the impact such changes would have on state economies.
Tipo: Article Palavras-chave: Conservation Reserve Program; Farm Service Agency; Managed haying and grazing provision; Agribusiness; Crop Production/Industries; Environmental Economics and Policy; Land Economics/Use.
Ano: 2011 URL: http://purl.umn.edu/119181
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Producers and Consumer attitudes toward Biotechnology in Ghana 31
Nsafoah, Annie; Dicks, Michael R.; Osei, Collins.
Over 265 million people in Sub-Saharan Africa face malnutrition, chronic hunger, and poverty. One of the technologies that could help alleviate the perpetuating cycle of chronic hunger is biotechnology. Genetic modification (GM) has the potential to enhance agricultural productivity and improve Africa’s food security, but little is known about the potential benefits and costs of using genetically modified maize in Africa - Ghana. African and Ghanaian policy makers, farmers, and consumers often have difficulty accepting new technologies. Their reluctance is due to the investment required for new technology, - aversion to risk, the changes required to traditional production practices, and incomplete- knowledge of new technologies. This study elicits the...
Tipo: Conference Paper or Presentation Palavras-chave: Producers and Consumer attitudes toward Biotechnology in Ghana; Agricultural and Food Policy; International Development; International Relations/Trade.
Ano: 2011 URL: http://purl.umn.edu/98642
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Recent Developments in Unit Root Tests and Historical Crop Yields 31
Zapata, Hector O.; Maradiaga, David Isaias; Pujula, Aude Liliana; Dicks, Michael R..
This study conducts an investigation on the application of classical unit-root tests using parametric tests (the augmented Dickey-Fuller, 1979 – ADF), and nonparametric tests (Phillips and Perron, 1988—PP) to corn and soybean yields in the Delta states using county-level data from 1961 to 2009. The main concern of the paper is to assess what would be drawn about nonstationarity in crop yields using these tests versus using modified versions of these tests (Ng and Perron, 2001) that are assumed to solve size and power problems associated with the ADF and PP tests. The investigation focuses on methodological aspects of the classical tests, uncovers the nature of filtered yields often needed prior to density estimation, sheds light on the effect of lag...
Tipo: Conference Paper or Presentation Palavras-chave: Crop yields; Nonstationarity; Unit-roots; Density estimation; Production Economics; Research Methods/ Statistical Methods; Risk and Uncertainty.
Ano: 2011 URL: http://purl.umn.edu/103871
Registros recuperados: 27
Primeira ... 12 ... Última
 

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