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Registros recuperados: 165
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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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Effect of Prices, Traits and Market Structure on Corn Seeding Density AgEcon
Mitchell, Paul D.; Shi, Guanming; Ma, Xingliang; Lauer, Joseph G..
Recent agronomic research finds that economically optimal seeding densities have likely increased for many Midwestern corn farmers as a result of genetic improvements including new GM traits such as Bt corn and herbicide tolerance. We derive a per acre demand model for hybrid seed corn to examine the determinants of corn seeding densities and estimate the model using a large data set of individual farmer seed corn purchases. Current results identify factors other than prices affecting farmer corn seeding densities. Among these factors are the GM trait of the seed corn, measures of the local seed corn market structure, seed purchase source and intended end use. We interpret these effects in terms of information effects—farmers with more/better access to...
Tipo: Conference Paper or Presentation Palavras-chave: Hybrid seed corn; Bt corn; Herbicide tolerance; Herfindahl index; Corn borer; Rootworm; Hyperbolic yield model; Agribusiness; Crop Production/Industries; Farm Management; Industrial Organization; Production Economics; D2; D21; Q1; Q12.
Ano: 2009 URL: http://purl.umn.edu/49520
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Effects of Manure Use and Use Restrictions on Variable Production Costs and Net Incomes for U.S. Corn Producers AgEcon
Beckman, Jayson F.; Livingston, Michael J..
We utilize a treatment effects model to examine if there are differences in costs/profits for manure-using corn producers versus non-users. We find that manure users have lower peracre operating costs via reductions in fertilizer and soil conditioner costs; however, the use of manure reduces grain yields and ultimately leads to no difference in profit. Separate results indicate that manure-use restrictions do not affect costs or profits; thus policies could be in place to regulate manure usage without impacting the costs/profit structure of the farm.
Tipo: Article Palavras-chave: Nutrient management; Treatment effects; Micro-data; Environmental Economics and Policy; Farm Management; Q1.
Ano: 2012 URL: http://purl.umn.edu/120450
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Effects of the Conservation Reserve Program on Elevator Merchandising Margins in Oklahoma AgEcon
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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Effects of volatile output prices on agricultural land-use change AgEcon
Boere, Esther; Peerlings, Jack H.M.; Reinhard, Stijn; Kuhlman, Tom; Heijman, Wim J.M..
Volatile output prices lead to a fluctuating shadow price (profitability) of agricultural land, and therefore may impact land use decisions in case of risk-averse behaviour. In this paper we assess the effect of volatile agricultural output prices on agricultural land-use change over the past decade in the Netherlands. Using regional data from 2000 through 2009, the number of hectares of land for 10 land uses was calculated. To determine the joint distribution of agricultural activities, hectares of land for each land use were converted to land share equations. Land share equations were estimated to determine the contribution of increased price volatility to land use change. Results show that larger volatility affects land shares negatively. Producer’s...
Tipo: Presentation Palavras-chave: Land-use; Risk; Price volatility; Risk and Uncertainty; Q1; D8.
Ano: 2012 URL: http://purl.umn.edu/122472
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Estimating Ricardian Models With Panel Data AgEcon
Massetti, Emanuele; Mendelsohn, Robert.
Many nonmarket valuation models, such as the Ricardian model, have been estimated using cross sectional methods with a single year of data. Although multiple years of data should increase the robustness of such methods, repeated cross sections suggest the results are not stable. We argue that repeated cross sections do not properly specify the model. Panel methods that correctly specify the Ricardian model are stable over time. The results suggest that many cross sectional methods including hedonic studies and travel cost studies could be enhanced using panel data.
Tipo: Working or Discussion Paper Palavras-chave: Climate Change; Impacts; Agriculture; Hedonic Models; Resource /Energy Economics and Policy; Q1; Q12; Q51; Q54.
Ano: 2011 URL: http://purl.umn.edu/115727
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Evaluating Crop and Revenue Insurance Products as Risk Management Tools for Texas Cotton Producers AgEcon
Field, James E.; Misra, Sukant K.; Ramirez, Octavio A..
This paper develops and illustrates the application of a procedure to evaluate and compare the cost effectiveness of alternative crop insurance products for cotton in terms of their effect on expected producer net returns and the variation of net returns. Farm unit-level cotton yields and state-level price distributions are estimated by a multivariate nonnormal parametric modeling procedure and used to simulate the net returns to alternative crop insurance products over a 10-year planning horizon. The ranking of alternative insurance products using third-degree stochastic dominance is presented for Texas cotton producers.
Tipo: Journal Article Palavras-chave: Cotton; Crop insurance; Multivariate nonnormal parametric modeling; Stochastic dominance; C5; Q1.
Ano: 2003 URL: http://purl.umn.edu/37314
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Explaining Production Inefficiency in China’s Agriculture using Data Envelope Analysis and Semi-Parametric Bootstrapping AgEcon
Monchuk, Daniel C.; Zhuo, Chen.
In this paper we examine more closely the factors associated with production inefficiency in China’s agriculture. The approach we take involves a two-stage process where output efficiency scores are first estimated using data envelope analysis (DEA), and then in the second stage, variation in the resulting efficiency scores are explained using a truncated regression model with inference based on a semi-parametric bootstrap routine. Among the results we find a heavy industrial presence is associated with reduced agricultural production efficiency and may be an indication that externalities from the industrial process, like air and ground water pollution, affect agricultural production. We also find evidence that counties with a large percentage of the rural...
Tipo: Conference Paper or Presentation Palavras-chave: China's agriculture; DEA; Bootstrapping; Technical efficiency; Production Economics; C14; Q1; R5.
Ano: 2008 URL: http://purl.umn.edu/6456
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Factors Influencing the Success Potential in Smallholder Irrigation Projects of South Africa: A Principal Component Regression AgEcon
Magingxa, Litha Light; Alemu, Zerihun Gudeta; van Schalkwyk, Herman D..
The objective of this paper is to examine the role of the factors expected to influence the success potential of small holder irrigation projects as they apply in the South African context. The study was conducted in six smallholder irrigation schemes in three provinces namely: Eastern Cape, Limpopo and Mpumalanga. To determine the farmers' potential success (dependent variable), a cluster analysis was conducted yielding two groups of farmers - the less successful and more successful. The principal component regression (PCR) tool was used to analyse the data and deal with the problem of multicollinearity, transforming the explanatory variables into principal component estimators. There were fourteen explanatory variables. Out of the nine statistically...
Tipo: Conference Paper or Presentation Palavras-chave: Success potential; Smallholder; South Africa; Irrigation projects; Principal component regression; Resource /Energy Economics and Policy; D1; O13; Q1.
Ano: 2006 URL: http://purl.umn.edu/25348
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Farmers’ Adoption of Extensive Wheat Production - Determinants and Implications AgEcon
Finger, Robert; El Benni, Nadja.
Using FADN data, we analyse farmers’ adoption decisions with respect to extensive wheat production, which is supported in Switzerland since 1992 with an ecological direct payment scheme. It shows that first year adoption was mainly characterized by free-riding effects. In particular small farms with low levels of input use and wheat yields adopted extensive wheat production. If later adoption phases are included, these differences in farm size between adopters and non-adopters vanish. However, the level of wheat yields is still an important adoption determinant. Less intensive producing farms (with lower yield levels) are much more likely to adopt extensive wheat production. In contrast, more intensively producing farms, i.e. those farms that may actually...
Tipo: Conference Paper or Presentation Palavras-chave: Extensive wheat production; Agri-environmental programme; Adoption analysis; Switzerland; Agricultural and Food Policy; Farm Management; Q1; Q5.
Ano: 2011 URL: http://purl.umn.edu/98979
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FARM-LEVEL CHARACTERISTICS OF SOUTHERN NEBRASKA FARMS/RANCHES WITH ANNUALLY-PLANTED CROPS AgEcon
Antle, John M.; Capalbo, Susan Marie; Heggem, Christine N.; Clark, Richard T.; Norton, Nancy A.; Selley, Roger A..
The information presented in this report represents data collected from farming and ranching operations in the southern two tiers of counties in Nebraska. This study was based on a random sample of 151 southern Nebraska farms that have annually-planted crop acreage. Information was obtained for the 1997 crop year. This data set is referred to as the MSU/UNL survey data. From the MSU/UNL survey data, the average size of the farming operations in the survey, in 1997, was 1,316 acres. Of these, 856 acres were planted to annual crops, and the remaining 460 acres included 61 acres in fallow, 29 acres in hay, 287 acres in range and pasture, 28 acres in CRP, and 55 acres in other uses. Operation size was largest in the west, due mostly to a large number of range...
Tipo: Working or Discussion Paper Palavras-chave: Field-scale production data; Southern Nebraska farm survey; Average farm size; Irrigated and dryland grain corn; Soybeans; Sorghum; Winter wheat; Livestock operations; Production Economics; Q1.
Ano: 2000 URL: http://purl.umn.edu/29243
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Firm Creation, Firm Evolution and Clusters in Chile’s Dynamic Wine Sector: Evidence from the Colchagua and Casablanca Regions AgEcon
Gwynne, Robert N..
Tipo: Working or Discussion Paper Palavras-chave: Wine; Argentina; Wine cluster; Regional development; Community/Rural/Urban Development; Industrial Organization; Production Economics; Q1.
Ano: 2008 URL: http://purl.umn.edu/42658
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Foot-and-Mouth Disease control costs compared: An Irish case study. AgEcon
Dillon, Emma J.; Matthews, Alan; Thorne, Fiona S..
The primary objective of this paper is to evaluate alternative control strategies for a number of simulated outbreaks of Foot-and-Mouth Disease (FMD) in four agriculturally diverse Irish regions, examining for the first time, the potential role of emergency vaccination in the country. The recent EU Directive (2003/85/EC) on FMD control permits the use of emergency vaccination as part of an FMD control strategy. While the slaughter of infected animals and “dangerous contacts” (susceptible animals on epidemiologically linked holdings) remains the principal tool for tackling an outbreak, the potential use of vaccination as an adjunct to the basic culling policy is now being considered. Using an integrated approach, combining epidemiological and economic...
Tipo: Conference Paper or Presentation Palavras-chave: Foot-and-Mouth disease; Alternative control strategies; Transboundary animal diseases; Emergency vaccination; Livestock Production/Industries; Q1; Q17; Q58.
Ano: 2007 URL: http://purl.umn.edu/7969
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FUTURES AND OPTIONS MARKETS, BASIS, AND THE TIMING OF GRAIN SALES IN MONTANA AgEcon
Mastel, Mike; Buschena, David E..
The performance of the grain transportation industry, historically low real grain prices, and decreasing government support for grain prices have renewed interest in local grain prices and shipping costs. An understanding of the relationship between local cash prices and futures prices is an important part of minimizing the price risk associated with growing and merchandising grain. The ability to recognize the seasonal patterns between these prices offers improved profit potential for marketing grain. A Montana producer's decision of when and how to market his/her crop can have a great impact on net profit. Farm managers can use cash sales at or after harvest, forward contracting with a local grain elevator, or hedging with the use of futures and options...
Tipo: Working or Discussion Paper Palavras-chave: Grain marketing; Futures; Basis; Freight rates; Marketing strategies; Marketing; Q1.
Ano: 2000 URL: http://purl.umn.edu/29176
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GMOs: Prospects for Increased Crop Productivity in Developing Countries AgEcon
Evenson, Robert E..
Genetically Modified Crops (GMO foods) have been widely available to farmers since 1996. The Gene Revolution, based on recombinant DNA (rDNA) genetic engineering techniques, is seen by proponents as both supplanting Green Revolution varieties, based on conventional plant breeding techniques, and potentially enabling “disadvantaged” production environments, unreached by Green Revolution varieties to achieve productivity improvements. This paper argues that the private firms supplying GM crop products have generally had little interest in selling products in disadvantaged production environments. The paper also argues that present rDNA techniques allow only static gains from specific “trait” improvements. But these GM products can be installed on Green...
Tipo: Working or Discussion Paper Palavras-chave: Genetically modified foods; Genetic engineering; Crop Production/Industries; O1; O4; Q1.
Ano: 2003 URL: http://purl.umn.edu/28504
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GRAIN QUALITY AND NORTH AMERICAN HARD WHEAT EXPORTS AgEcon
Wilson, William W.; Dahl, Bruce L..
Past debate on competition and quality in international wheat markets has focused on class and country of origin as the salient source of differentiation. This study analyzes changes in demand for both wheat classes and grades. Comparisons are made between Canadian and U.S. hard wheats, principal competitors in the hard wheat market. Both countries are dominant producers of Hard Red Spring Wheat (HRS in the United States and Canadian Western Red Spring [CWRS] in Canada); the United States is the dominant producer of Hard Red Winter (HRW); and both countries are large producers of durum (Hard Amber Durum [HAD] in the United States and Canadian Western Amber Durum [CWAD] in Canada). Due to the indigenous similarities among these wheats, the competitive...
Tipo: Working or Discussion Paper Palavras-chave: Grain quality; Wheat exports; Wheat markets; International Relations/Trade; F1; Q1.
Ano: 1998 URL: http://purl.umn.edu/29249
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Greenhouse Gas Emissions, Stabilization and the Inevitability of Adaptation: Challenges for U.S. Agriculture AgEcon
Rose, Steven K.; McCarl, Bruce A..
Outstanding Choices Article Award, 2009
Tipo: Journal Article Palavras-chave: Environmental Economics and Policy; Q1; Q54; Q58.
Ano: 2008 URL: http://purl.umn.edu/94498
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Grocery Retailer Pricing Behavior for California Avocados with Implications for Industry Promotion Strategies AgEcon
Li, Lan; Carman, Hoy F.; Sexton, Richard J..
Rising concentration and consolidation of sales among large supermarket chains in the U.S. and other countries, due in part to a recent wave of mergers in food retailing, have made retailers' role in the food industry a topical issue. Using a unique micro dataset, this paper investigates retailer pricing issues for avocados, a key California specialty commodity, and analyzes the implications of retailer pricing behavior for the effectiveness of avocado industry advertising programs. The methodologies developed and the results achieved in this study should have broad applications across the produce sector, the food industry, and the grocery retail market. We find that retail prices for avocados are highly dispersed both spatially and temporarily. The...
Tipo: Conference Paper or Presentation Palavras-chave: F13; L1; L81; Q1; Q13; Demand and Price Analysis; Marketing.
Ano: 2006 URL: http://purl.umn.edu/25494
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HARMONIZATION AND CONVERGENCE OF CANADIAN AND U.S. GRAIN AND OILSEEDS POLICIES: 1985-1996 AgEcon
Gray, Richard S.; Smith, Vincent H..
The United States and Canada share the longest common border and largest bilateral trading relationship in the world. Recent trading agreements--CUSTA, NAFTA and WTO--have enhanced trade by encouraging elimination of many remaining trade barriers. However, one cause for concern about the effectiveness of these trade agreements has been the frequency of Canadian-U.S. trade disputes over bilateral wheat and barley trade arrangements and trade flows. To some extent, these disputes have arisen because of differences in and lack of harmonization between the domestic and trade policies implemented by the two countries, although other political factors have also clearly been important causes of these disagreements. Since 1986, many dimensions of the agricultural...
Tipo: Working or Discussion Paper Palavras-chave: Agricultural policy; Harmonization and convergence; Grains; Oilseeds; International Relations/Trade; Q1.
Ano: 1997 URL: http://purl.umn.edu/29163
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Homo Agricola considered as Homo Economicus and Homo Politicus AgEcon
Zawojska, Aldona.
The paper is of descriptive character and is based on literature review. It reviews the concept of homo economicus and homo politicus in the history of economic thought and tries to discover their characteristics in homo agricola. As demonstrated, one component of homo agricola can be of economic and another one of political nature. Those components can be separated or can be together. Agricultural economists, however, in their sophisticated mathematical models seem to reduce farmers’ behaviour to economic behaviour or rather to self-interested homo economicus. Institutional economics, social economics and socio-economics are closer to actual human nature, than homo economicus. The further research challenge before agricultural academia is to develop the...
Tipo: Conference Paper or Presentation Palavras-chave: Agriculture; Economics; Politics; History of economic thought; Agricultural and Food Policy; Institutional and Behavioral Economics; Political Economy; Q1; A13; P4; B0.
Ano: 2010 URL: http://purl.umn.edu/90835
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