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	Provedor de dados AgEcon (24) R. Bras. Zootec. (2) Planta Daninha (1) Autor Delgado,Ricardo Tellez (2) Flores,José Saturnino Mora (2) Gillespie, Jeffrey M. (2) Thornsbury, Suzanne (2) Wei, Xuan (2) Abdulai, Awudu (1) Ahrendsen, Bruce L. (1) Ai, Chunrong (1) Ajao, A.O. (1) Anderson, Soren T. (1) Bierlen, Ralph W. (1) Bouhlal, Yasser (1) Braumoeller, Bear F. (1) Breen, James P. (1) Butler, Anne Marie (1) Capps, Oral, Jr. (1) Carley, Dale H. (1) Cazares,Aleida Selene Hernández (1) Chang, Hung-Hao (1) Clancy, Daragh (1) Mais... Palavra-chave Probit (27) Logit (8) Research Methods/ Statistical Methods (6) Q16 (4) Consumer/Household Economics (3) Environmental Economics and Policy (3) Food Consumption/Nutrition/Food Safety (3) Livestock Production/Industries (3) Technology adoption (3) Agricultural Finance (2) Crop Production/Industries (2) Information cost (2) International Relations/Trade (2) Land Economics/Use (2) Political Economy (2) Q12 (2) Sample selection (2) Technical barriers to trade (2) Adaptation (1) Adaptive quadrature (1) Mais... Tipo do documento Journal Article (12) Conference Paper or Presentation (10) Info:eu-repo/semantics/article (3) Working or Discussion Paper (2) Ano 2018 (1) 2015 (1) 2011 (3) 2010 (1) 2009 (5) 2008 (2) 2006 (2) 2005 (2) 2004 (3) 2003 (2) 2002 (1) 2001 (1) 1999 (1) 1996 (1) 1994 (1) Mais... País United States (24) Brazil (3) Idioma Inglês (26) Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 27 Primeira ... 1 2 ... Última Temperatura cardeal e potencial hídrico na germinação de sementes de corda-de-viola (Ipomoea triloba) Planta Daninha Rizzardi,M.A.; Luiz,A.R.; Roman,E.S.; Vargas,L.. O presente trabalho teve como objetivos avaliar o efeito da temperatura e da umidade na germinação e na emergência de corda-de-viola (Ipomoea triloba) e determinar o efeito de potenciais hídricos e de temperaturas na germinação de sementes e na elongação do hipocótilo e da radícula dessa espécie. Avaliaram-se os termoperíodos de 9,3 e 5 (7,5); 14,3 e 10 (12,5); 19,3 e 15 (17,5); 24,3 e 20 (22,5); 29,3 e 25 (27,5); 34,3 e 30 (32,5); 39,2 e 35 (37,5) e 44,2; 40 (42,5); e 49,2 e 45 (47,5) ºC, alternando-se durante 14 e 10 horas, e os potenciais hídricos de 0, -0,03, -0,06, -0,1, -0,2, -0,4, -0,6 e -0,9 MPa. A germinação de corda-de-viola foi descrita pela interação da temperatura e do potencial hídrico, e a taxa de elongação da radícula e do hipocótilo, em... Tipo: Info:eu-repo/semantics/article Palavras-chave: Modelagem; Tempo hidrotérmico; Probit; Análise. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582009000100003 Awareness of and Application to the Environmental Quality Incentives Program By Cow–Calf Producers AgEcon Obubuafo, Joyce; Gillespie, Jeffrey M.; Paudel, Krishna P.; Kim, Seon-Ae. This study uses a bivariate probit model with partial observability to examine Louisiana beef producers’ awareness of the Environmental Quality Incentives Program (EQIP) and how awareness translates to application to the program. Results indicate that awareness of and application to the EQIP depend on portion of income derived from off-farm sources, extent of previous best management practice adoption at one’s own expense, household income, farmed land that is highly erodible, contact with Natural Resource Conservation Service and extension service personnel, and producer age. Tipo: Journal Article Palavras-chave: BMPs; Bivariate probit; EQIP; Probit; Agribusiness; Environmental Economics and Policy; Livestock Production/Industries; Q12; Q16; Q18. Ano: 2008 URL: http://purl.umn.edu/45531 Arkansas Landlord Selection of Land-Leasing Contract Type and Terms AgEcon Rainey, Ronald L.; Dixon, Bruce L.; Ahrendsen, Bruce L.; Parsch, Lucas D.; Bierlen, Ralph W.. Land leasing is a major source of the land input to production agriculture. Responses from a survey of landlords leasing crop land in Arkansas are analyzed to better understand those factors motivating landlords in the type of lease they select and the terms of those leases. Probit models are estimated to determine the relative importance of variables representing credit constraint, agency problem, and risk aversion factors. Regression models then estimate the impact of site, landlord, and tenant characteristics on contract terms – the percentage of crop and cost sharing arrangements between landlord and tenant. Probit results suggest credit constraint factors influence lease-type selection. Risk aversion, managerial ability, and social capital factors are... Tipo: Journal Article Palavras-chave: Land leasing; Probit; Contract; Production agriculture; Land Economics/Use. Ano: 2005 URL: http://purl.umn.edu/8175 The Last of the American Ag Economists AgEcon Epperson, James E.. It has become more and more difficult to recruit prospective American Ph.D. students in Agricultural and Applied Economics. The purpose of this study was to determine the extent of the problem, to ascertain why with respect to location and other important factors, and hopefully deduce recruiting solutions. Results indicate that the paramount factors in a profile of those willing to pay the price in terms of sacrifice and effort to obtain a Ph.D. encompass willingness to accept a relatively low starting salary with a Ph.D., likely to be a Foreign National, prone to be in a Midwestern university, and willing to relocate globally. Generally, the Ph.D. starting salary would have to increase dramatically to change the minds of graduate students not intending to... Tipo: Conference Paper or Presentation Palavras-chave: American; Agricultural Economists; Ph.D.; Salaries; Probit; Labor and Human Capital. Ano: 2009 URL: http://purl.umn.edu/49272 Water Saving Technology in Chinese Rice Production - Evidence from Survey Data AgEcon Abdulai, Awudu; Glauben, Thomas; Herzfeld, Thomas; Zhou, Shudong. Whereas water is an important input in rice production, China faces severe problems with increasing demand for water and limited water resources. In conventional paddy production, one of the most important irrigated crops, a significant amount of irrigation water is lost due to percolation and evaporation. Therefore, it exist a vivid research in water saving rice technologies. This paper analyzes the adoption of one of these water-saving rice production technologies, the so-called Ground Cover Rice Production System (GCRPS), in the Hubei province. Based on farm survey data several factors which affect the adoption decision could be identified. The adoption decision is treated as a binary choice problem and therefore a probit model is used for the... Tipo: Conference Paper or Presentation Palavras-chave: China; Technology adoption; Water; GCRPS; Probit; Crop Production/Industries; O30; Q16. Ano: 2005 URL: http://purl.umn.edu/24708 An Extension of the Blinder-Oaxaca Decomposition Technique to Logit and Probit Models AgEcon Fairlie, Robert W.. The Blinder-Oaxaca decomposition technique is widely used to identify and quantify the separate contributions of group differences in measurable characteristics, such as education, experience, marital status, and geographical differences to racial and gender gaps in outcomes. The technique cannot be used directly, however, if the outcome is binary and the coefficients are from a logit or probit model. I describe a relatively simple method of performing a decomposition that uses estimates from a logit or probit model. Expanding on the original application of the technique in Fairlie (1999), I provide a more thorough discussion of how to apply the technique, an analysis of the sensitivity of the decomposition estimates to different parameters, and the... Tipo: Working or Discussion Paper Palavras-chave: Logit; Probit; Decomposition; Race; Gender; Discrimination; Research Methods/ Statistical Methods; C8; J7. Ano: 2003 URL: http://purl.umn.edu/28425 Tax-Deferred Retirement Savings of Farm Households: An Empirical Investigation AgEcon Mishra, Ashok K.; Chang, Hung-Hao. This study examines factors affecting tax-deferred retirement savings among farm households. A double-hurdle model is estimated using 2003 Agricultural Resource Management Survey (ARMS) farm-level national data. Results indicate that demographic factors, total household income, off-farm work, and risk preference play important roles in retirement savings plan participation. Retirement savings increase with household size, intensity of off-farm work by farm operator and spouse, and size of farming operation. We find that the amount of retirement savings decreases with operator’s age and increases with spouse’s age, and that cash grain and dairy farmers have lower retirement savings. Tipo: Journal Article Palavras-chave: Double-hurdle estimation; Farm households; Probit; Retirement savings; Risk preference; Total household income; Agricultural Finance; Consumer/Household Economics. Ano: 2011 URL: http://purl.umn.edu/105545 The Impact of Retail Promotion on the Purchase of Private Label Products: The Case of U.S. Processed Cheese AgEcon Bouhlal, Yasser; Capps, Oral, Jr.. This study examines the impact of retail promotion on the purchase of private label products. The influence of private label coupons, national brand coupons, and store features is examined. To identify these effects, a logistic model Probit is estimated where the binary variable equals 1 if the household buys the private label product, and equals 0 if the private label product is not bought. The model gives the probability that Y=1 is chosen conditional on a set of explanatory variables. In this study we focus on the American processed cheese transactions and we use the ACNielsen Homescan Panel of U.S. households for the year 2005. No significant relationship was found between private label purchase and the level of private label couponing activity.... Tipo: Conference Paper or Presentation Palavras-chave: Retail promotion; Coupon; Private label; Cheese consumption; Probit; Endogenous explanatory variable; Consumer/Household Economics; Demand and Price Analysis. Ano: 2010 URL: http://purl.umn.edu/61286 PROGRAM PARTICIPATION BEHVAIOR OF NONINDUSTRIAL FOREST LANDOWNERS: A PROBIT ANALYSIS AgEcon Nagubadi, Venkatarao; McNamara, Kevin T.; Hoover, William L.; Mills, Walter L., Jr.. This study provides an analysis of nonindustrial private forest (NIPF) landowners' participation in forestry assistance programs. A probit model was used for data collected from a random sample of 329 Indiana landowners. The analysis revealed that total land owned, commercial reasons for ownership, government sources of information, and membership in forestry organizations influenced NIPF landowners' program participation. Age, fear of loss of property rights, and duration since the first wooded tract was acquired also influenced program participation. Location of landowners' residence on their wooded land and landowners' knowledge of and willingness to participate in a conservation easement influenced the participation in cost –share programs. Tipo: Journal Article Palavras-chave: Classified forestry programs; Cost-share programs; Nonindustrial private forest landowners; Participation behavior; Probit; Land Economics/Use. Ano: 1996 URL: http://purl.umn.edu/15126 Computing interaction effects and standard errors in logit and probit models AgEcon Norton, Edward C.; Wang, Hua; Ai, Chunrong. This paper explains why computing the marginal effect of a change in two variables is more complicated in nonlinear models than in linear models. The command inteff computes the correct marginal effect of a change in two interacted variables for a logit or probit model, as well as the correct standard errors. The inteff command graphs the interaction effect and saves the results to allow further investigation. Tipo: Journal Article Palavras-chave: Inteff; Interaction terms; Logit; Probit; Nonlinear models; Research Methods/ Statistical Methods. Ano: 2004 URL: http://purl.umn.edu/116235 Information Cost: A Prior Hurdle to Exporting AgEcon Wei, Xuan; Thornsbury, Suzanne. This paper empirically investigates how information cost, as part of trade costs, affects the decision of an individual firm to export. We use cross section firm-level data to examine how the difficulty of obtaining information on technical regulations in the European Union (EU) and the United States actually reduces firm incentives to export to these two destinations. Results suggest that increased information cost significantly reduces the probability of exporting for an individual firm, beyond tariff and other nontariff barriers. Tipo: Conference Paper or Presentation Palavras-chave: Information cost; Probit; Technical barriers to trade; Industrial Organization; International Relations/Trade; Political Economy. Ano: 2009 URL: http://purl.umn.edu/51745 Simplified Marginal Effects in Discrete Choice Models AgEcon Anderson, Soren T.; Newell, Richard G.. We show that after a simple normalization of explanatory variables so that they equal zero at some desired reference point, marginal effects for continuous variables in probit and logit models simplify dramatically, becoming a function of only the estimated constant term. We present similar simplifications for computation of the asymptotic variance of marginal effects, as well as for the effects of dummy variables on predicted probabilities. We provide a simple table, which in combination with raw probit or logit estimates, is all one needs to compute the desired effects. Tipo: Working or Discussion Paper Palavras-chave: Logit; Probit; Discrete choice; Binary choice; Marginal effect; Data normalization; Research Methods/ Statistical Methods; C25; C51; C81. Ano: 2003 URL: http://purl.umn.edu/10631 Willingness to Pay for Irradiated Meat Products: A Comparison between Poultry and Pork AgEcon Huang, Chung L.; Wolfe, Kent; McKissick, John C.. Food processors are interested not only to increase the safety of their products but also to reduce losses associated with foodborne illness problems. Irradiating food products provides one means of addressing the foodborne illness issue by significantly reducing the presence of foodborne bacteria and diseases. The objective of the study is to develop an empirical model to estimate the likelihood of consumers purchasing irradiated food products and their willingness to pay for irradiated poultry and pork products within a two-step decision-making process. The decision-making framework assumes that consumers decide first whether or not to buy irradiated foods. If so, the consumer then decides specifically how much that they are willing to pay. Thus, a... Tipo: Conference Paper or Presentation Palavras-chave: Food safety; Irradiation; Probit; Double-bounded bidding; Socio-demographics; Food Consumption/Nutrition/Food Safety; Livestock Production/Industries; D1; C21. Ano: 2006 URL: http://purl.umn.edu/25416 DETERMINANTS OF HOUSEHOLD HURRICANE EVACUATION CHOICE IN FLORDIA AgEcon Solis, Daniel; Thomas, Michael H.; Letson, David. In this study we implement a set of econometric models to analyze the determinants of household hurricane evacuation choice for a sample of 1,355 households in Florida. This article contributes to the literature by accounting for two issues normally neglected in previous studies; namely, time and space. The empirical results suggest that households living in risky environments (mobile home and flooding areas) are more likely to evacuate. In addition, households with kids and those who have experience the treat of a hurricane also display higher probabilities to evacuate. Conversely, homeowners and households with pets are less likely to evacuate than their counterparts. Regional differences in propensity to evacuate are also clearly demonstrated, with... Tipo: Conference Paper or Presentation Palavras-chave: Hurricane; Evacuation choice; Probit; Environmental Economics and Policy; Risk and Uncertainty. Ano: 2009 URL: http://purl.umn.edu/45338 The economic viability of biomass crops versus conventional agricultural systems and its potential impact on farm incomes in Ireland AgEcon Clancy, Daragh; Breen, James P.; Butler, Anne Marie; Thorne, Fiona S.. Ireland is currently importing 90 percent of its energy. The burning of domestically produced nonrenewable peat provides 4.9 percent of Ireland’s total primary energy supply while renewable biomass crops currently account for only 1 percent of the domestically produced energy supply. The Irish government have set a target of 30% of peat (approximately 0.9 million tonnes) used for electricity generation to be replaced by renewable energy crops. This would be equivalent to approximately 0.6 million tonnes of biomass crops or approximately 45,000 hectares of biomass. Direct payments and subsidies accounted for over 100 percent of average family farm income on beef and sheep farms in 2006. Therefore there appears to be significant potential for Irish farmers... Tipo: Conference Paper or Presentation Palavras-chave: Willow; Miscanthus; Co-firing; Net present value; Probit; Linear programming; Agricultural Finance; Institutional and Behavioral Economics; Resource /Energy Economics and Policy. Ano: 2008 URL: http://purl.umn.edu/6485 THE INFLUENCES OF LAND TENANCY AND ROTATION SELECTION ON CRAWFISH FARMERS’ ADOPTION OF BEST MANAGEMENT PRACTICES AgEcon Nyaupane, Narayan P.; Gillespie, Jeffrey M.. This study investigates factors influencing the adoption of best management practices in Louisiana crawfish production. Probit results show acreage, years farming, portion of income from farming, technology adoption tendencies, hunting leases and a stream running through the farm to influence adoption. The most frequently used BMP was irrigation water management. Tipo: Conference Paper or Presentation Palavras-chave: Best Management Practices (BMPs); Technology adoption; Crawfish; Probit; Tenancy; Crop rotation; Production Economics. Ano: 2009 URL: http://purl.umn.edu/46174 Information Cost As A Prior Hurdle to Exporting AgEcon Wei, Xuan; Thornsbury, Suzanne. In this paper, we empirically assess how information cost, as one component of trade costs, impacts the decision of an individual firm to export. Firm-level data measuring the difficulty of obtaining information about technical regulations in the European Union (EU) and the United States is used as a proxy for information cost to evaluate reduction in firm incentives to export. Results suggest that information cost significantly reduces the likelihood of exporting to these two destinations. Negative impacts are relatively larger for a firm exporting to the United States than to the EU. Tipo: Conference Paper or Presentation Palavras-chave: Information cost; Trade costs; Non-tariff; Technical barriers to trade; Probit; International Relations/Trade; Political Economy; F14; L25. Ano: 2011 URL: http://purl.umn.edu/103622 Farmers’ strategies for adapting to climate change in Ogbomoso agricultural zone of Oyo state AgEcon Ajao, A.O.; Ogunniyi, L.T.. The climate is changing and global mean temperatures have increased this is expected to have profound effects on food security. Long-term changes in climate will disproportionately affect tropical regions, meaning poor farmers in Sub-Saharan Africa will likely bear the brunt of adverse impacts. Adaptation plays an important role in reducing vulnerability to climate change and is therefore critical and of concern in developing countries, particularly in Africa where vulnerability is high because ability to adapt is low. This study examined farmers’ strategies for adapting to climate change in Ogbomoso agricultural zone of Oyo State of Nigeria. One hundred and fifty farmers were interviewed to obtain information from using a multistage sampling procedure.... Tipo: Journal Article Palavras-chave: Climate; Probit; Mulchin; Adaptation; Agricultural and Food Policy; Environmental Economics and Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; GA; IN. Ano: 2011 URL: http://purl.umn.edu/116378 Adoption of Site-Specific Information and Variable-Rate Technologies in Cotton Precision Farming AgEcon Roberts, Roland K.; English, Burton C.; Larson, James A.; Cochran, Rebecca L.; Goodman, W. Robert; Larkin, Sherry L.; Marra, Michele C.; Martin, Steven W.; Shurley, W. Donald; Reeves, Jeanne M.. Probit analysis identified factors that influence the adoption of precision farming technologies by Southeastern cotton farmers. Younger, more educated farmer who operated larger farms and were optimistic about the future of precision farming were most likely to adopt site-specific information technology. The probability of adopting variable-rate input application technology was higher for younger farmers who operated larger farms, owned more of the land they farmed, were more informed about the costs and benefits of precision farming, and were optimistic about the future of precision farming. Computer use was not important, possibly because custom hiring shifts the burden of computer use to agribusiness firms. Tipo: Journal Article Palavras-chave: Cotton; Grid soil sampling; Precision farming; Probit; Sample selection; Site-specific information; Technology adoption; Variable-rate application; D21; Q12; Q16. Ano: 2004 URL: http://purl.umn.edu/42943 WILLINGNESS TO PLANT IDENTITY PRESERVED CROPS: THE CASE OF MISSISSIPPI SOYBEANS AgEcon Hudson, Darren; Jones, Tom. The willingness to plant identity preserved (IP) crops was examined using Mississippi soybean producers as an example. A contingent valuation framework was used to assess the impacts of offered premiums on a producer's probability of planting IP soybeans. Findings suggest that offered premiums significantly affect planting decisions. In addition, desire to learn more about IP production was found to increase the probability of planting, suggesting that desire to learn leads to experimentation. Finally, prior knowledge or experience planting IP crops significantly decreased the probability of planting. Tipo: Journal Article Palavras-chave: Identity preservation; Soybeans; Contingent valuation; Experimentation; Logit; Probit; Crop Production/Industries; Q13; Q16. Ano: 2001 URL: http://purl.umn.edu/15444 Registros recuperados: 27 Primeira ... 1 2 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco