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Registros recuperados: 28
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Classification of agricultural systems based on pesticide use intensity and safety AgEcon
Hernandez-Rivera, Jose; Mann, Stefan.
An analysis of socio-economic driving forces in crop protection is proposed to improve the implementation of sustainable strategies. The analysis includes: (1) a classification of agricultural systems based on pesticide use intensity and safety, (2) an evaluation of the profitability of farming systems and identification of socio-economic factors that influence pesticide use and (3) formulation of policy recommendations. We find that for cereals and for fruit trees alike, crop yields are much higher for agricultural systems with high doses of pesticides. The safety of applied pesticides does not affect crop protection costs significantly. For cropping systems characterised by low-intensity in pesticide use, the application of safer products has a positive...
Tipo: Conference Paper or Presentation Palavras-chave: Pesticide use; Driving forces in crop protection; Economic analysis of agricultural systems; Crop Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/44246
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Defining elasticities for PMP models by estimating marginal cost functions based on FADN Data - the case of Swiss dairy production AgEcon
Mack, Gabriele; Mann, Stefan.
The Swiss agricultural sectoral information and forecasting system (SILAS) is based on the PMP standard approach. The marginal cost functions are estimated by exogenous elasticities. Due to the lack of empirical data the elasticities were set for all activities to unity. Based on total milk production costs of FADN farms, regional supply functions were estimated. The results are used to adjust the marginal cost functions of organic and non-organic dairy cow activities in the model SILAS to the empirically estimated functions. The results show that the marginal cost functions in the sectoral model are in general a bit steeper than in the FADN estimations, when elasticities by the value one are applied. Major differences between organic and non-organic milk...
Tipo: Conference Paper or Presentation Palavras-chave: Marginal cost function; Milk production costs; PMP-based sectoral model; Demand and Price Analysis; Livestock Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/6694
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Deliberation, Responsivity and Power in German and Swiss Agricultural Policy AgEcon
Mann, Stefan.
Preferences with respect to agricultural policy have changed in Germany and Switzerland. In the middle of the 20th century, food self sufficiency and a certain cultural solidarity with farmers were central issues. Today, farmers are expected to contribute to environmental protection and safe food. Switzerland and Germany are two examples of countries where national agricultural policies have attempted to take the changing preferences into account. However, in Germany the government had a hard time succeeding since the general features of agricultural policy are decided by the EU. Comparing Germany with Switzerland indicates that it might be more appropriate to decide on agricultural policy on the national rather than on a regional or supranational level.
Tipo: Journal Article Palavras-chave: Agricultural and Food Policy.
Ano: 2005 URL: http://purl.umn.edu/32003
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Die Expertenbewertung als Alternative zur Kontingenzbewertung AgEcon
Mann, Stefan.
A lot of research is carried out on the Contingent Valuation Method to assess environmental goods. However, the method is rarely applied to quantify reimbursements for agri-environmental policy. In this paper, this contradiction is explained by conceptual shortcomings of the Contingent Valuation. It is suggested to discuss the utility of agri-environmental programs among experts. For that, a three-step methodology including a possible monetary evaluation is developed. The method is applied on agri-environmental programs in Switzerland.
Tipo: Journal Article Palavras-chave: Contingent valuation; Experts; Agri-environmental policy; Agricultural and Food Policy; Environmental Economics and Policy; Research Methods/ Statistical Methods.
Ano: 2003 URL: http://purl.umn.edu/98084
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Die Kosten der Okomassnahmen in der Schweizer Landwirtschaft AgEcon
Mann, Stefan.
Tipo: Journal Article Palavras-chave: Environmental Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/31995
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Die Landwirtschaft und andere Einflussgrößen auf die Bevölkerungsentwicklung im ländlichen Raum AgEcon
Mann, Stefan; Erdin, Daniel.
Factor analysis and regression analysis is used to estimate population growth and migration into and out of rural agreas in Switzerland between 1990 and 2000. Farm households contribute to an above average birth rate. However, there is a net migration out of rural areas.
Tipo: Journal Article Palavras-chave: Mesoeconomics; Economic structures; Socio-economics; Community/Rural/Urban Development.
Ano: 2005 URL: http://purl.umn.edu/97324
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Distributional effects of direct payments in Switzerland AgEcon
El Benni, Nadja; Mann, Stefan; Lehmann, Bernard.
The switch from market-support to direct payments in Switzerland had impacts on the income distribution among farmers. In this paper, the distributional effect of the switch as a whole and of the different kinds of direct payments are elaborated through a presentation of different decomposed Gini coefficients. Although the income distribution in Swiss Agriculture is still more equal than in most other countries, the Gini coefficient has risen from 0.27 in 1990 to 0.38 in 2009 and is by now strongly dependent on the composition of direct payments. Off-farm income and direct payments decrease, while market income increases income inequality.
Tipo: Conference Paper or Presentation Palavras-chave: Income distribution; Direct payments; Gini decomposition; Agricultural policy; Agricultural and Food Policy; Q00; Q18; Q28..
Ano: 2011 URL: http://purl.umn.edu/99368
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Do retired farmers need a separate social policy? AgEcon
Mann, Stefan.
Many European countries employ social policy instruments specifically designed for retired farmers. We present the German case and argue from a life course perspective that it may be justified, in principle, to employ specific social policy instruments for groups with their own social characteristics. The Swiss case where retirement policies for farmers do not yet exist, is used for examining the need for special social support instruments. A regression analysis of the financial situation of retired Swiss farmers and a Configural Frequency Analysis of several social parameters was carried out. It cannot be shown that Swiss retired farmers, in default of own social policy instruments, are generally in a precarious situation.
Tipo: Working or Discussion Paper Palavras-chave: Configural Frequency Analysis; Life course approach; Old age policy; Labor and Human Capital.
Ano: 2007 URL: http://purl.umn.edu/7278
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Farm Entry Policy and Its Impact on Structural Change Analysed by and Agent-based Sector Model AgEcon
Mack, Gabriele; Mohring, Anke; Zimmermann, Albert; Gennaio, Maria-Pia; Mann, Stefan; Ferjani, Ali.
The Swiss agent-based model (SWISSland) claims to depict as realistically as possible the 50 000 family farms comprising the whole of Swiss agriculture in all their heterogeneity as regards farm and cost structures as well as farm decision-making behaviour and interactions, with the aim of improving the simulation and forecasting of structural change in agriculture. With the linking of different methods and recorded data, there is a marked increase in the quality of the assessment of policy consequences. Simulations are shown for policy measures which affect only farm entry by cutting socially motivated direct payments for young operators.
Tipo: Conference Paper or Presentation Palavras-chave: Agent-based model; Sector model; Farm entry; Structural change; Farm Management.
Ano: 2011 URL: http://purl.umn.edu/114374
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Framing Obesity in Economic Theory and Policy AgEcon
Mann, Stefan.
While obesity is a growing problem that entails considerable costs, its causes for individuals are not yet well understood in economic terms. Three explanatory approaches are explored: obesity as a rational decision pursued by the individual, obesity as a problem of too little information and obesity as the result of a weak will. While the recent rise in obesity can be explained rationally by a changed environment, information deficiencies and akrasia contribute to explaining its frequency. If the state intervenes, a fat tax carries much higher allocative losses than taxing overweight directly.
Tipo: Conference Paper or Presentation Palavras-chave: Welfare economics; Second-order preferences; Health economics; Health Economics and Policy.
Ano: 2006 URL: http://purl.umn.edu/25619
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HOW CAN THE ENERGY USE IN SWISS AGRICULTURE BE ASSESSED IN ECONOMIC AND ECOLOGICAL TERMS? AgEcon
Mack, Gabriele; Ferjani, Ali; Kranzlein, Tim; Mann, Stefan.
Replaced with revised version of paper 12/05/07.
Tipo: Conference Paper or Presentation Palavras-chave: Energie-Input; Einkommensmaximierung; Mehrzieloptimierung; Effizienz; Energy use; Income maximisation; Multi-objective programming; Efficiency; Resource /Energy Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/7599
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Können Produktionsentscheidungen als Investitionsentscheidungen modelliert werden? AgEcon
Mann, Stefan; Mack, Gabriele; Ferjani, Ali.
Interviews with Swiss farmers lead to the hypotheses that production decisions, also in crop growing, are not made annually, but similarly to investment decisions in the long run. This hypothesis is backed by non-parametric time-series analysis for Switzerland and Germany. This creates a theoretical basis for combining Positive Mathematical Programming with flexibility constraints in optimization models. Results of the forecasting model SILAS show that forecasting quality is improved through this approach.
Tipo: Journal Article Palavras-chave: Flexibility constraints; Production decisions; Optimization models; Forecasting quality; Farm Management.
Ano: 2003 URL: http://purl.umn.edu/98078
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Modelling structural change in the agricultural sector – An Agent-based approach using FADN data from individual farms AgEcon
Mohring, Anke; Zimmermann, Albert; Mack, Gabriele; Mann, Stefan; Ferjani, Ali; Gennaio, Maria-Pia.
The development of multi-agent models for agriculture has allowed the inclusion of farm decision-making behaviour and interactions in the simulation of smaller agricultural regions. Important methodological impact for this has come in particular from scientists from Germany. Currently under construction, the SWISSland model claims to depict as realistically as possible the 50,000 family farms comprising the whole of Swiss agriculture in all their heterogeneity as regards farm and cost structures as well as farm decision behaviours, with the aim of improving the simulation and forecasting of structural change. This paper describes methodological aspects in the formation of the agent population by combining various data sources such as accounting and spatial...
Tipo: Conference Paper or Presentation Palavras-chave: Structural change; Swiss agriculture; Multi-agent model; Agent definition; Linear optimization; Agricultural and Food Policy; Farm Management; Land Economics/Use.
Ano: 2010 URL: http://purl.umn.edu/61094
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Multidisziplinäre Agentendefinitionen für Optimierungsmodelle AgEcon
Mohring, Anke; Zimmermann, Albert; Mack, Gabriele; Mann, Stefan; Ferjani, Ali; Gennaio, Maria-Pia.
Mit der Entwicklung von Multiagentenmodellen für die Landwirtschaft konnten betriebliche Entscheidungsverhalten und Interaktionen in die Simulation von kleineren Agrarregionen einbezogen werden. Wichtige methodische Impulse dazu kamen insbesondere von Wissen-schaftlerinnen und Wissenschaftlern aus Deutschland. Das sich im Aufbau befindende Modell SWISSland erhebt den Anspruch, die 50 000 Familienbetriebe der gesamten Schweizer Landwirtschaft in ihrer Heterogenität bezüglich Betriebs- und Kostenstrukturen sowie Verhal-tensweisen möglichst realitätsnah abzubilden, mit dem Ziel, die Simulation und Prognose des Strukturwandels zu verbessern. Dieser Beitrag beschreibt methodische Aspekte bei der Bil-dung der Agentenpopulation unter Verwendung verschiedener...
Tipo: Conference Paper or Presentation Palavras-chave: Strukturwandel; Schweizer Landwirtschaft; Multi-Agentenmodell; Agentendefinition; Lineare Optimierung; Research Methods/ Statistical Methods.
Ano: 2009 URL: http://purl.umn.edu/53273
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Multifunktionalität als Erklärungsansatz AgEcon
Mann, Stefan; Wustemann, Henry.
Tipo: Journal Article Palavras-chave: Agricultural and Food Policy.
Ano: 2005 URL: http://purl.umn.edu/97396
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OCCUPATIONAL CHOICE AND STRUCTURAL CHANGE AgEcon
Mann, Stefan; Mante, Juliane.
The connection between average sectoral income, occupational choice and structural change has so far only been described vaguely for sectors dominated by small enterprises. Taking agriculture as an example, we first develop a theoretical model in which we explain the decision to take over a farm with the average agricultural household income in the past years and the number of farms with the patterns of occupational choice. We then estimate a regression in which we explain occupational choices by the sectoral income situation and rate of farm decline by earlier occupational choices. The results demonstrate that a good income situation increases the number of occupational choices in favour for farming, and that occupational choices for farming in turn...
Tipo: Working or Discussion Paper Palavras-chave: Occupational choices; Structural change; Agricultural income; Research paper; Labor and Human Capital.
Ano: 2004 URL: http://purl.umn.edu/30707
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OF FARMERS AND BUTCHERS - COMPARING THE DETERMINANTS OF EXIT IN SHRINKING SECTORS AgEcon
Mann, Stefan; Mante, Juliane.
Farmers and butchers in Switzerland both operate in shrinking sectors. The number of businesses and the sectoral turnover has decreased by about 40 per cent over the last twenty years for both sectors. It is, however, an interesting question whether the determinants of exit are the same for the primary sector and the secondary and tertiary sector. A regression analysis reveals that, for farmers, a larger part of exits can be traced back to economic factors if compared to butchers. For butchers, the profit of the business is the key determinant of structural change, whereas for farms, the level of prices is an important signal factor. Interest rates influence structural change for both sectors. The study points to the importance of sector-specific research.
Tipo: Working or Discussion Paper Palavras-chave: Agribusiness; Farm Management.
Ano: 2004 URL: http://purl.umn.edu/30708
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Population development in rural Switzerland: Do sectors matter? AgEcon
Mann, Stefan.
The paper approaches the question of the role of the three different sectors in rural population development. A regression with data from 1606 rural Swiss municipalities shows that activity in the farming sector enhances population growth to a greater degree than activity in the industrial sector. Employment in the service sector was not found to sustain population growth in rural municipalities, whereas commuting possibilities had a strongly stabilising impact. Other important determinants were wealth, the number of holiday homes and demographic factors. A qualitative study of four rural municipalities largely confirmed the findings of the regression, but also showed the importance of non-economic factors influencing the relative attractiveness of a rural...
Tipo: Working or Discussion Paper Palavras-chave: Community/Rural/Urban Development; Industrial Organization.
Ano: 2006 URL: http://purl.umn.edu/30710
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The Depopulation of Rural Areas and the Farming System AgEcon
Mann, Stefan.
Depopulation of rural areas can entail negative externalities. This paper examines, inter alia, the influence of the farming system on depopulation processes. The population change in rural communities in Switzerland (family-based farming system) and in the German Land Mecklenburg-Western Pomerania (fordistic farming system) is explained through regression analysis by the proportion of persons occupied in the three economic sectors and by other variables. In Switzerland, a high proportion of locals occupied in farming affects population dynamics positively; in Mecklenburg- Western Pomerania, the situation is exactly opposite. This can serve as an argument to support small and networked farms in rural problem regions.
Tipo: Conference Paper or Presentation Palavras-chave: Community/Rural/Urban Development.
Ano: 2005 URL: http://purl.umn.edu/24415
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The effect of agricultural policy change on income risk in Swiss agriculture AgEcon
El Benni, Nadja; Finger, Robert; Mann, Stefan.
The study examines the effect of agricultural policy reforms on income variability of Swiss farmers. The observed heterogeneity in income risks across farms and time is explained with farm and regional characteristics. FADN data are used to construct coefficients of variation of total household income and gross revenues at farm-level over the period 1992-2009. Applying linear mixed effect models the effects of off-farm income, direct payments, farm size, specialisation and liquidity on gross revenue and household income variability in three different production regions are measured. The switch from market-based support to direct payments decreased the variability of farm revenues and household income. Off-farm income has a positive and farm size a negative...
Tipo: Presentation Palavras-chave: Income risk; Agricultural policy; Direct payments; Risk and Uncertainty; Q12; Q14; Q18.
Ano: 2012 URL: http://purl.umn.edu/122532
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