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Registros recuperados: 42
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A COMPARISON OF NUTRIENT APPLICATION TRENDS ON LIVESTOCK FARMS IN CORN AND COTTON GROWING REGIONS AgEcon
Nehring, Richard F.; Christensen, Lee A.; O'Donoghue, Erik J.; Sandretto, Carmen L..
Recent trends in livestock concentration suggest that there may be an increasing risk of water pollution from manure applications. These trends in livestock operations may be offsetting improvements in commercial fertilizer management that have the potential to reduce the risk of water pollution. This conclusion was derived by tracking excess nutrient trends between 1996 and 2002 and by examining measures of economic performance for livestock farms. First, a link was established between the expansion of AFOs (Animal Feeding Operations) and excess nutrients from commercial fertilizer and manure sources. Second, technical efficiency was measured in order to identify whether technical efficiency explains structural change and in order to see whether...
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Economics and Policy.
Ano: 2004 URL: http://purl.umn.edu/34764
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A Translog Cost Function Analysis of U.S. Agriculture: 1948-1999 AgEcon
Ball, V. Eldon; Nehring, Richard F.; Moss, Charles B.; Erickson, Kenneth W..
This study examines the implications of the short-run specification of the standard, static translog cost function along with the possible implications of non-stationarity by estimating a dynamic translog cost specification complete with dynamic share equations for the U.S. using an empirical approach developed by Urga and Walters (2003). We compare the results of the static, long-run model with those of a dynamic, short-run error-correction model in terms of 1) significance of the parameter estimates, and 2) consistency with economic theory.
Tipo: Conference Paper or Presentation Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2003 URL: http://purl.umn.edu/35968
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Accounting for Bads in the Measurement of Productivity Growth: A Cost Indirect Malmquist Productivity Measure and it Application to U.S. Agriculture AgEcon
Ball, V. Eldon; Fare, Rolf; Grosskopf, Shawna; Zaim, O.; Nehring, Richard F..
This paper starts with the basic premise that the conventional measures of productivity growth, which ignore joint production of good and bad outputs, are biased. We then construct an alternative productivity growth measure using activity analysis. An application to U.S. agriculture demonstrates its usefulness. More specifically, we show that the Tornqvist index of productivity is biased upward when production of undesirable outputs or "bads" is increasing. Conversely, this same measure of productivity is biased downward when externalities in production are decreasing.
Tipo: Conference Paper or Presentation Palavras-chave: Productivity Analysis.
Ano: 2001 URL: http://purl.umn.edu/20442
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Adoption of Technology, Management Practices, and Production Systems by U.S. Beef Cow-Calf Producers AgEcon
Pruitt, J. Ross; Gillespie, Jeffrey M.; Nehring, Richard F.; Qushim, Berdikul.
Using USDA’s Agricultural Resource Management Survey data, factors leading to the adoption of technology, management practices, and production systems by U.S. beef cow-calf producers are analyzed. Binary logit regression models are used to determine impacts of vertical integration; region of the U.S.; farm size, diversification, and tenure; and demographics on adoption decisions. Significant differences were found in adoption rates by region of the U.S., degree of vertical integration, and size of operation, suggesting the presence of economies of size and vertical economies of scope. Results also indicate high degrees of complementarity among technologies, management practices, and production systems.
Tipo: Article Palavras-chave: Cattle; Cow-calf; Management practices; Production systems; Technology adoption; Farm Management; D21; Q12; Q16.
Ano: 2012 URL: http://purl.umn.edu/123778
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Agricultural Productivity in the United States AgEcon
Ahearn, Mary Clare; Yee, Jet; Ball, V. Eldon; Nehring, Richard F..
Increased productivity is a key to a healthy and thriving economy. Consequently, the trend in productivity, economywide, is one of the most closely watched of our common economic performance indicators. Agriculture, in particular, has been a very successful sector of the U.S. economy in terms of productivity growth. The U.S. farm sector has provided an abundance of output while using inputs efficiently. Agricultural productivity growth has been an important source of U.S. economic growth throughout the century, but the years since 1940 have seen an even faster growth in agricultural productivity. The annual average increase in productivity from 1948 to 1994 was 1.94 percent. This reflects an annual growth in output of 1.88 percent per year and an actual...
Tipo: Report Palavras-chave: Productivity; Efficiency; Agricultural production; Outputs; Inputs; Productivity Analysis.
Ano: 1998 URL: http://purl.umn.edu/33687
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Agricultural Profits and Farm Household Wealth: A Farm-level Analysis Using Repeated Cross Sections AgEcon
Blank, Steven C.; Erickson, Kenneth W.; Nehring, Richard F.; Hallahan, Charles B..
This study examines the relationship between agricultural profits and farm household wealth across locations and farm sizes in U.S. agriculture. A multiperiod household model is used to develop hypotheses for testing. Results indicate that farmland has out-performed nonfarm investments over the past decade. Thus, households may want to keep their farmland to build wealth, even if it requires them to earn off-farm income. The analysis implies that decision will be made based on farm household wealth factors having little to do with agriculture.
Tipo: Journal Article Palavras-chave: Farm household; Off-farm income; Production profits; Wealth; Agribusiness; Demand and Price Analysis; Farm Management; Risk and Uncertainty; Q12; Q14.
Ano: 2009 URL: http://purl.umn.edu/48749
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Agricultural Profits and Farm Household Wealth: A Farm-level and Cross-sectional Analysis AgEcon
Blank, Steven C.; Erickson, Kenneth W.; Nehring, Richard F.; Hallahan, Charles B..
This study examines the relationship between agricultural profits and farm household wealth across locations and farm sizes in U.S. agriculture. Farmland has out-performed non-farm investments over the past decade. Thus, households may want to keep their farmland to build wealth, even if it requires them to earn off-farm income.
Tipo: Conference Paper or Presentation Palavras-chave: Land Economics/Use.
Ano: 2006 URL: http://purl.umn.edu/21436
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An Error-Components Three-Stage Least-Squares Model of Investment Allocation by Farm Households AgEcon
Davies, Stephen P.; Erickson, Kenneth W.; Vickner, Steven S.; Hoag, Dana L.; Nehring, Richard F..
This paper is an assessment of patterns of investment by farm households via an econometric model adapted from a land allocation approach of Holt (1999). This analysis will shed light on the importance of different classes of assets to farm household well-being, and show the reaction of farm households to a variety of market, international and government effects.
Tipo: Conference Paper or Presentation Palavras-chave: Farm Management.
Ano: 2005 URL: http://purl.umn.edu/19249
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Assessing Economic and Environmental Impacts of Ethanol Production on Fertilizer Use in Corn Production AgEcon
Nehring, Richard F.; Vialou, Alexandre; Erickson, Kenneth W.; Sandretto, Carmen L..
The share of corn used in ethanol production has been growing rapidly. USDA predicts that more than 30 percent of the corn crop will be used for ethanol production in 2009/2010. Expanded corn acreage contributes to the application of more fertilizer and is likely to introduce a larger volume of nutrients into the environment. This study found that an increase in ethanol production is consistent with a significant increase in quality-adjusted fertilizer use in selected corn states.
Tipo: Conference Paper or Presentation Palavras-chave: Quality-adjusted fertilizer; Corn production; Ethanol; Excess nutrients; Crop Production/Industries; Environmental Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/6736
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Assessing Recent Trends in Pesticide Use in U.S. Agriculture AgEcon
Fernandez-Cornejo, Jorge; Nehring, Richard F.; Newcomb Sinha, Elizabeth; Grube, Arthur; Vialou, Alexandre.
Replaced with revised version of paper 04/20/10.
Tipo: Conference Paper or Presentation Palavras-chave: Pesticides; Herbicides; Insecticides; Hedonic models; Genetically engineered crops; Corn; Soybeans; Cotton; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Production Economics; Productivity Analysis; Research Methods/ Statistical Methods.
Ano: 2009 URL: http://purl.umn.edu/49271
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At What Rate Do Farmers Substitute Manure For Commercial Fertilizers? AgEcon
O'Donoghue, Erik J.; MacDonald, James M.; Nehring, Richard F..
Water quality has implications for the health of our ecosystem and the welfare of our population. Agriculture is one of the major contributors of non-point source pollution that contaminates our nation's water supplies. Understanding how farmers substitute manure for commercial fertilizers allows us to better understand the level of nitrogen that enters the soil and can seep into our waterways. In this paper, we explore the factors that help determine farmers' substitution rates between the two types of fertilizers. Location, crop type, and time all could play important roles. We analyze USDA farm level survey data for both crop and livestock farms covering the years 1996 to 2002 to create substitution rate estimates used on corn, soybean, and wheat...
Tipo: Conference Paper or Presentation Palavras-chave: Farm Management.
Ano: 2005 URL: http://purl.umn.edu/19252
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Capital as a Factor of Production in OECD Agriculture: Measurement and Data AgEcon
Ball, V. Eldon; Lindamood, W.A.; Nehring, Richard F.; Mesonada, Carlos San Juan.
This paper provides a farm sector comparison of levels of capital input for fourteen OECD countries for the period 1973-2002. The starting point for construction of a measure of capital input is the measurement of capital stock. Estimates of depreciable capital are derived by representing capital stock at each point of time as a weighted sum of past investments. The weights correspond to the relative efficiencies of capital goods of different ages, so that the weighted components of capital stock have the same efficiency. Estimates of the stock of land are derived from balance sheet data. We convert estimates of capital stock into estimates of capital service flows by means of capital rental prices. Comparisons of levels of capital input among countries...
Tipo: Conference Paper or Presentation Palavras-chave: Financial Economics.
Ano: 2006 URL: http://purl.umn.edu/21315
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Conservation Tillage, Pesticide Use, and Biotech Crops in the U.S.A. AgEcon
Fernandez-Cornejo, Jorge; Hallahan, Charles B.; Nehring, Richard F.; Wechsler, Seth James; Grube, Arthur.
This paper presents the first part of an ongoing project whose objective is to present a long term relationship between conservation tillage, adoption of GE crops and pesticide use for major crops in the United States. In addition, the project aims to provide some innovative tests on causality using a panel data set. This paper presents preliminary results for soybeans.
Tipo: Conference Paper or Presentation Palavras-chave: Conservation tillage; Biotechnology; Genetically engineered crops; Soybeans; Herbicides; Environmental Economics and Policy; Farm Management; Production Economics.
Ano: 2010 URL: http://purl.umn.edu/60941
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Cow-Calf Farm Management: Farm survey evidence from 2007 AgEcon
Nehring, Richard F.; Peel, Derrell S.; Nulph, David.
This study describes and compares cow-calf operations and assesses their relative competitiveness, developing performance measures for a sample of U.S. farms. We find that larger operations tend to be significantly more scale and technically efficient than smaller operations. However, we do not find significant differences in net farm returns by size except on medium large operations—showing virtually no net return on farm assets in 2007. While larger operations are clearly more scale and technically efficient and have lower variable costs per cow, off-farm income makes smaller operations competitive as reflected in higher household returns than all size groups--except for very large cow-calf operations.
Tipo: Conference Paper or Presentation Palavras-chave: Cow-calf; Performance measures; Technical efficiency; Farm Management; Production Economics; Research Methods/ Statistical Methods.
Ano: 2009 URL: http://purl.umn.edu/46672
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Dairy Resource Management: A Comparison of Conventional and Pasture-Based Systems AgEcon
Nehring, Richard F.; Gillespie, Jeffrey M.; O'Donoghue, Erik J.; Sandretto, Carmen L..
Facing rapid and significant change in the sector, U.S. dairy production trends from 1993-2005 were tracked and performance measures (scale and technical efficiency and returns on assets) were estimated for conventional and pasture-based dairy farms using data from USDA's Agricultural Resource Management Survey. Comparisons of relative economic performance of dairy farms by size and type are made.
Tipo: Conference Paper or Presentation Palavras-chave: Dairy operations; Pasture-based systems; Technical efficiency; Livestock Production/Industries.
Ano: 2007 URL: http://purl.umn.edu/34814
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Determining the Competitive Edge: Diversified Dairy Production Systems in the United States and the European Union AgEcon
Sauer, Johannes; Nehring, Richard F.; Gillespie, Jeffrey M.; Morrison Paul, Catherine J.; Blayney, Donald P.; Hallahan, Charles B.; Latruffe, Laure.
Tipo: Conference Paper or Presentation Palavras-chave: Agricultural and Food Policy; Farm Management; Livestock Production/Industries; Production Economics; Productivity Analysis.
Ano: 2010 URL: http://purl.umn.edu/61149
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Economic Efficiency of U.S. Organic Versus Conventional Dairy Farms: Evidence from 2005 and 2010 AgEcon
Nehring, Richard F.; Gillespie, Jeffrey M.; Hallahan, Charles B.; Sauer, Johannes.
We estimate an input distance function for U.S. dairy farming to examine the competitiveness of organic and non-organic dairy production by system and size. Across organic/non-organic systems and size classes, size is the major determinant of competitiveness based on various measures of productivity and returns to scale.
Tipo: Presentation Palavras-chave: Organic; Non-organic; Input Distance Function; Livestock Production/Industries; Production Economics.
Ano: 2012 URL: http://purl.umn.edu/119769
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Economics and Productivity of Organic versus Non-organic Dairy Farms in the United States AgEcon
Gillespie, Jeffrey M.; Nehring, Richard F.; Hallahan, Charles B.; Morrison Paul, Catherine J.; Sandretto, Carmen L..
Technical and scale efficiencies are estimated for organic and non-organic dairy farms in the United States using an input distance function approach. A multinomial logit analysis is used to categorize the farms by technology. Large conventional farms outperformed smaller farms in most technology / organic / non-organic categories. There was high variability in net returns among the organics so that they did not differ significantly from the large conventional farms. The largest conventional non-organic operations and conventional organic operations tended to have the higher technical efficiencies.
Tipo: Conference Paper or Presentation Palavras-chave: Organic dairy production; Input distance function; Technical efficiency; Livestock Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/44415
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EFFECTIVE COSTS AND CHEMICAL USE IN U.S. AGRICULTURAL PRODUCTION: BENEFITS AND COSTS OF USING THE ENVIRONMENT AS A "FREE" INPUT AgEcon
Morrison Paul, Catherine J.; Ball, V. Eldon; Felthoven, Ronald G.; Nehring, Richard F..
This study uses a cost-function-based model of production processes in U.S. agriculture to represent producers' input and output decisions, and the implied costs of reductions in risk associated with leaching and runoff from agricultural chemical use. The model facilitates evaluation of the statistical significance of measured shadow values for "bad" outputs, and their input- and output-specific components, with a focus on the impacts on pesticide demand and its quality and quantity aspects. The shadow values of risk reduction are statistically significant, and imply increased demand for effective pesticides over time that stem largely from improvements in quality due to embodied technology, and that vary substantively by region.
Tipo: Working or Discussion Paper Palavras-chave: Environmental Economics and Policy; Farm Management.
Ano: 2000 URL: http://purl.umn.edu/11986
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Forage Outsourcing in the Dairy Sector: The Extent of Use and Impact on Farm Profitability AgEcon
Gillespie, Jeffrey M.; Nehring, Richard F.; Sandretto, Carmen L.; Hallahan, Charles B..
The extent of forage purchasing behavior in milk production and its impact on profitability are analyzed using data from the 2000 and 2005 dairy versions of the Agricultural Resource Management Survey. Forage outsourcing is more common with hay than with silage and haylage, and is more prevalent in the western United States. Though silage and haylage outsourcing is found to impact profitability, the major profitability drivers appear to be farm size and efficiency. Evidence of significant forage contracting is found in the western United States.
Tipo: Journal Article Palavras-chave: Forage; Input purchasing; Outsourcing; Contracting; Milk production; Farm Management; Industrial Organization; Livestock Production/Industries.
Ano: 2010 URL: http://purl.umn.edu/95591
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