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| Maciejczak, Mariusz; Was, Adam. |
| The paper takes one significant element of the agriculture production – use of genetically modified organisms (GMO) – and considers it in relation to the production pattern in Polish farms. It asks if under the ceteris paribus conditions the use of GMO plants in Polish farms will have influence on the cropping structure. To answer this question only a scientific and theoretical assumption has been applied that GMO cultivation is permitted without restrictions in Poland. The approach combines both the very short experience of the new biotech based system of agricultural production and a modeling, which builds up and aggregates the impacts of individual farm responses under assumed situations. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: GMO; Cropping structure; Farm model; Polish agriculture; Crop Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/44238 |
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| Marchand, Fleur L.; Buysse, Jeroen; Campens, V.; Claeys, Dakerlia; Fernagut, Bruno; Lauwers, Ludwig H.; Van der Straeten, Bart; Van Huylenbroeck, Guido. |
| Current thoughts on CAP changes, e.g. the "Health Check", emphasize the necessity to move away from payments based on historical receipts towards a "flatter rate" system. The aim of current research is to simulate the impact of a flat rate system (equal payments per hectare of cultivated land) compared to the current historical system (payments based on individual historic entitlements). Impact on production and income of arable, dairy and cattle farms of two different flat rate scenario's, is assessed with a farm-based sector model for Flanders. The model maximizes income at farm level, calibrated to observed farming behavior in 2001-2003. Farm data can be selected by farm type, size and region, simulations could be run for specific sub sectors, size... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Positive Mathematical Programming; Farm model; Common Agricultural Policy; Payment Entitlements.; Agricultural and Food Policy; Agricultural Finance; Farm Management; Research Methods/ Statistical Methods. |
| Ano: 2008 |
URL: http://purl.umn.edu/6681 |
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| Buysse, Jeroen; Van der Straeten, Bart; Claeys, Dakerlia; Lauwers, Ludwig H.; Marchand, Fleur L.; Van Huylenbroeck, Guido. |
| To explain over- and underuse of available quota, Buysse et al. (2007) have integrated the shadow cost of the quota constraint in a quota flexibility function in a positive mathematical programming model. This method and central hypothesis, formulated and tested for the case of Belgian sugar beet farms, is in current paper extended and confirmed for the cases of Flemish dairy quota and manure emission rights. Despite the different organisation, objectives and implementations of the diverse quota systems, the results are similar. A higher utilisation of quota is significantly driven by the quota rent, but farm characteristics are also important and the effect declines with increasing quota rent. Regardless the quota, the dairy quota flexibility behaviour of... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Quota; Flexibility; Positive Mathematical Programming; Farm model; Common Agricultural Policy; Agricultural and Food Policy; Demand and Price Analysis; Research Methods/ Statistical Methods. |
| Ano: 2008 |
URL: http://purl.umn.edu/6640 |
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| Petsakos, Athanasios; Rozakis, Stelios. |
| Positive Mathematical Programming (PMP) is one of the most commonly used methods of calibrating activity linear programming (LP) models in agriculture. PMP applications published thus far focus on the estimation of a farm’s nonlinear cost or profit function and rely on the recovery of unobserved or implicit information that can explain the initial model’s inability to calibrate. In this paper we use the PMP procedure to calibrate an expected utility model under the assumption that this implicit information can reveal a farmer’s profit expectations and risk attitude. The perfect calibration shows that PMP can be applied not only to LP models, but also to models that incorporate risk and this provides an interesting alternative to the traditional PMP... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: E-V analysis; Expected utility; Farm model; Positive Mathematical Programming; Risk.; Risk and Uncertainty. |
| Ano: 2011 |
URL: http://purl.umn.edu/114762 |
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| Kerselaers, Eva; Govaerts, Wim; Lauwers, Ludwig H.; De Cock, Lieve; Van Huylenbroeck, Guido. |
| A farm model is developed for simulating the potential income change resulting from conversion to organic farming. The model uses conventional farm data, taken from the Belgian FADN. Given the normative character of the model, and the impossibility of calibration to historical conversion behaviour, two model variants, a rigid and a flexible, are created to broaden the analysis scope. Moreover, extra attention is paid to the verification process and sensitivity analysis. Results reveal that the economic potential for conversion is rather high, if farmers are willing to change their farm management sufficiently. Furthermore, conversion potential depends on the farm type and conventional farm characteristics. The model finally proves to be an interesting tool... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Organic farming; Conversion period; Farm model; Linear programming; Environmental Economics and Policy; Farm Management; C61; Q12. |
| Ano: 2005 |
URL: http://purl.umn.edu/24732 |
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| Majewski, Edward; Hinners-Tobragel, Ludger; Straszewski, Slawomir; Was, Adam. |
| The aim of the paper is to examine impacts of different rates of direct payments on production structures and farm incomes of Polish family farms after the accession to the EU. Analyses have been made for 2004, the assumed year of accession, with the use of a linear programming farm optimisation model. 15 farm types, further differentiated by soil quality, have been selected for the study. The modelling results show, that depending on the respective policy scenario (i.e. the rate of direct payments) the introduction of the Common Agricultural Policy (CAP) in Poland may cause some shifts in farm production. Under the conditions of Agenda 2000 and with 25 % of direct payments, as proposed by the European Commission, farm incomes would in 2004 approximately... |
| Tipo: Journal Article |
Palavras-chave: EU accession; Polish Agriculture; Direct payments; Typical farms; Farm model; Agricultural and Food Policy. |
| Ano: 2002 |
URL: http://purl.umn.edu/98273 |
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| Jelinek, Ladislav; Foltyn, Ivan; Spicka, Jindrich; Ratinger, Tomas. |
| This paper deals with the ex-ante analysis of the effects of farm subsidies on farm behaviour. Beside that the risk factor is implemented in the farm model to reflect and quantify potential (negative) impact on farm results. A farm-level optimization model is used to assess the effects of different kind of policies and risk on production structure, income indicators and land use management. It appeared that a reasonable level of risk (via income variation) have impact, but not significant. If liberalisation would have happened (zero direct and disadvantageous payments) production would homogenised, 30% of land would remained abandoned, production and income would clearly decline. Other scenario points out that environmental objectives (here through more... |
| Tipo: Journal Article |
Palavras-chave: Agrarian policy; Risk assessment; Farm model; Direct payments; Agricultural and Food Policy; Farm Management; GA; IN. |
| Ano: 2010 |
URL: http://purl.umn.edu/99066 |
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| Hinners-Tobragel, Ludger; Keszthelyi, Krisztian. |
| Direct payments are a controversial issue in the accession negotiations. While the EU proposes reduced payments the accession countries claim that they should be equally treated as the present EU members. The present study, based on micro-simulations on the farm level, shows impacts of various policy options (ranging from non-accession to the granting of full direct payments) on the production structure and profitability of Hungarian agricultural enterprises. For most products prices are expected to be higher in 2004 than in the reference year, 2001. EU accession will have an additional positive effect on the prices of all products. Direct payments would further increase farm profits. In particular crop producers would benefit (due to the increase in the... |
| Tipo: Journal Article |
Palavras-chave: EU-enlargement; Direct payments; Farm model; Typical farms; Hungarian agriculture; Agricultural and Food Policy. |
| Ano: 2002 |
URL: http://purl.umn.edu/98272 |
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