Showing results for: agriculture modeling Articles
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A conceptual framework for managing information flow in innovation systems
This study introduces a framework for managing information flow in innovation systems. An organisation's capacity to receive information, to share it with others and to learn from it is assumed to be the key factor that shapes the flow patterns and, hence, the performance of the innovation system concerned. The framework is applied to characterise the information structure underlying the ...
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Assessing the prediction capacity of an agricultural supply positive mathematical programming model
In this paper, the calibration and prediction capacity of a supply response positive mathematical programming model (PMP) for the Alentejo region are evaluated. The model is calibrated with prices and agricultural subsidies of the base year (2000), using the specification rules of the cost function standard, Paris standard, average cost and exogenous elasticities. Then, the model is utilised for ...
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World cotton markets liberalisation and cotton trade in Sudan
In this paper, the impact of full liberalisation of world cotton markets on Sudan and some selected African countries was estimated. Last version of Agricultural Trade Policy Simulation Model was applied. The results indicate that the liberalisation of cotton markets will lead to an increase in the world market price of cotton, which will have positive impact on the production and trade of the ...
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Innovative farm policies and their impact in a French frontier zone: reviving old conflicts in Guadeloupe (FWI)?
Society now expects agriculture to fulfil new functions to improve quality of life. This requirement has been reinforced by recent crises. The 1999 French Agricultural Framework Law (LOA) formalised agricultural multifunctionality and included payments to farmers for new practices, which satisfy both social and environmental functions, in addition to economic ones. A voluntary territorial farm ...
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Common agricultural policy (CAP) and measures for environment protection and conservation: contrasts, balances and new methods of development for the future
In the European Union, the problem of the relationship between agriculture and environment has been dealt with following two policies: one aimed at defining a system of rules to limit the risk of environment pollution and decay; the other, mainly aimed at accompanying CAP's reform process. This evolution has concurred to strengthen the idea that agriculture as a means of ensuring environment ...
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Trading off risks and benefits when valuing new GM technologies: a consumer perspective
While Genetically Modified (GM) crops and foods are in production and on the shelves of supermarkets in many countries, they are still under much criticism and scrutiny around the world. Many studies report that consumers' perceptions towards biotechnology are mixed. The main contribution of this paper is to present a Contingent Valuation (CV) modelling approach that allows for the calculation of ...
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The challenge of integrating EU and Turkish agricultural markets and policies
This paper addresses the potential consequences of a political and economic integration of EU and Turkish agriculture and evaluates the resulting challenges. Simulation models reveal declining agricultural prices for Turkey in the case of market integration with the EU. This would lead to less production, more consumption and Turkey becoming a net importer of agricultural products. Resulting ...
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Farm models and economic valuation in the context of multifunctionality: a review of approaches from France, Germany, The Netherlands and Portugal
Multifunctionality of Agriculture (MFA) is a concept that supports the recognition of complex interdependencies between different resources, production processes and outputs of agricultural land use. Political decision making within a sustainable development frame requires extensive information about these interrelationships in order to analyse the impact of implemented policies and to assess ...
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Cold Turkey? Dealing with agricultural trade liberalisation
Turkey has a particular interest in the WTO agricultural negotiations in view of its significant agricultural sector. This paper undertakes a quantitative analysis of trade liberalisation and its impact on Turkish agriculture. We use UNCTAD's Agricultural Trade Policy Simulation Model (ATPSM). A likely scenario suggests that Turkey may face higher import bills as world prices for cereals are ...
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Farm planning in nitrate sensitive agricultural areas
One of the main aims of the Rural Development Plan under the EU Common Agricultural Policy is the protection of nitrate sensitive areas through agri–environmental schemes. This paper presents a mathematical programming model for farm planning in agricultural areas that are sensitive to nitrates. A bilevel linear programming (BLP) model is developed, that can achieve the optimal farm production ...
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Breaking the dilemma of agricultural water fee collection in China
Low agricultural water fee collection rates are a problem commonly faced by many developing countries and this is a problem faced by China as it enters the new century. There are two main problem-solving strategies used in different areas of China: increasing the water fee collection rate, or exempting people from paying the water fee. In those areas where the first strategy is pursued, local ...
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Paradigms and paradoxes of agricultural risk governance
Essential requirements of council directives and legal provisions in medical feedstuffs are not satisfied in Germany. The 'Schweinemastskandal' (intensive pig breeding scandal) sheds light on the various stakeholders that exploit ambiguous EU regulatory control structures through the use of hazardous feeding stuff and prophylactic prohibited medication. This case helps the understanding of ...
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Modelling Common Agricultural Policy–Water Framework Directive interactions and cost-effectiveness of measures to reduce nitrogen pollution
Selecting cost-effective measures to regulate agricultural water pollution to conform to the Water Framework Directive presents multiple challenges. A bio-economic modelling approach is presented that has been used to explore the water quality and economic effects of the 2003 Common Agricultural Policy Reform and to assess the cost-effectiveness of input quotas and emission standards against ...
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Copper distribution in chemical soil fractions and relationships with maize crop yield
Abstract Agricultural practices can lead to copper accumulation in soils and at high concentration it can become toxic for plants. One common toxic effect of copper on plants is a decrease of crop yield. Here, we studied 1) the crop yield of maize grown on plots of a soil intentionally enriched with copper sulphate and 2) the possible relationship between the copper concentration in chemical soil ...
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Macro–engineering Australia's Lake Eyre with imported seawater
The macro–engineering project proposal exploits technologies that have the potential to quickly enliven the arid region surrounding Lake Eyre. The plan is focused on biosaline agriculture. The distinctive macro–project components are: Lake Eyre is gradually filled to a higher level by controlling evaporation and by pumping seawater from the nearby ocean using cheap tensioned textile tubes. Most ...
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A preliminary review of gas-to-particle conversion monitoring and modelling efforts in the USA
Ammonia and inorganic acid gases emitted from livestock and poultry operations, manure treatment, handling and application can affect air quality by the formation of secondary fine particles. The process of gas-to-particle conversion (GTPC) of relatively short-lived gaseous ammonia to more persistent fine particles can affect local and regional air quality far away from the agricultural sources. ...
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Sheep–for–meat farming systems in French semi–upland area. Adapting to new context: increased concentrates and energy prices, and new agricultural policy
We used simulation to study how three French sheep production systems could adapt to a new context created by a surge in cereal prices associated with changes in common agricultural policy support. The evaluation criteria were economic performance, energy efficiency, emissions of greenhouse gases, and sensitivity to technical and economic fluctuations. We found the most intensive system was the ...
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Soil Sensors: The Key to Efficient and Sustainable Agricultural Management
Abstract:As the global population continues to grow and resources become increasingly strained, the efficiency and sustainability of agricultural production are becoming increasingly important. Soil sensors play a vital role in this process, providing real-time information on soil conditions to help farmers manage and improve their fields more effectively.Advantages of soil sensors:First, improve ...
By JXCT
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New market channels for a non-food agricultural product. The development of an alternative supply chain for the bergamot citrus in Calabria, Italy
The bergamot, a typical fruit of the Italian region of Calabria, contains an essence that is a basic component for the perfume industry. In the last decades bergamot sector declined dramatically, because of the introduction of an artificial substitute of the essence and for the producers' fragmentation. After describing the evolution of the industry and of the supply-chain structure, the paper ...
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Regional modelling for optimal allocation of agricultural crops considering environmental impacts, housing value and leisure preferences
Regional planning should consider the impact of agricultural crops on housing value and leisure, as well as on the local environment. We designed an optimisation model for allocating agricultural crops based on farmers' profits as well as the impact on these three factors. Each crop creates a different landscape, as well as a different effect on shading and noise reduction. This in turn ...
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