Will policy support for organic farming be justified in the future? The environmental impacts of organic farming

Introduction: In the European Union, organic farming has experienced a dynamic development in the 1990s, in part debited to financial support from agricultural policy measures. The most commonly used argument in support of organic farming is its positive environmental effects. However, support of organic farming practices on those grounds is only justified if these actually result in less negative environmental impacts than conventional farming. Stolze et al. (1999) reviewed existing research results up to 1997 on this topic and compiled a qualitative comparative evaluation based on an adapted OECD environmental indicator concept for agriculture (OECD 1997). On a per hectare basis, organic farming showed to be less detrimental with respect to most indicators than conventional farming. This paper will evaluate new evidence on the issue, taking results on a per output basis and the most recent developments in general EU agricultural legislation and organic standards into account. Materials and Methods: The OECD set of environmental indicators for the agricultural sector adapted by Stolze et al. (1999) is used. Based on a literature review of research results compiled between 1997 and 2002 a qualitative assessment is given for the following indicator categories: i) ecosystem, ii) natural resources (soil, ground and surface water, climate and air), iii) farm input and output, iv) animal health and welfare. The effect of recent developments in general agriculture EU legislation and organic standards on the relative benefits of organic farming is evaluated to assess if conventional agriculture is approaching organic agriculture due to tightening general legislation. Additionally, the option of achieving beneficial effects on some indicator categories when combining organic production with a targeted management of non-productive areas is reviewed. Results and Discussion: Organic farming seems to perform better than conventional farming with respect to all considered indicators, but large differences exist between indicators. New evidence permitted the evaluation on a per output basis for some indicators. This changes the final qualitative assessment for some indicators or indicator categories compared to the results of Stolze et al. (2000). Recent developments in EU legislation on agriculture in general do not seem to fundamentally change the relative assessment of the environmental impacts of organic in comparison to conventional agriculture. However, some important developments are not yet reflected in research results, e.g. the EU organic animal husbandry standards (European Commission 1999) which were implemented only in the year 2000. Conclusions: Support to organic farming is justified due to its positive environmental effects. However, the relative benefits must continue to be monitored in the light of current developments in agricultural legislation and organic standards. Cost-benefit analyses of the environmental effects of organic farming support in comparison to other agri-environmental measures and conventional farming are needed

Environmental impacts of organic farming in Europe

Organic farming has become an important element of European agri-environmental policy due to increasing concern about the impact of agriculture on the environment. This book describes in detail the environmental and resource use impacts of organic farming relative to conventional farming systems, based on a set of environmental indicators for the agricultural sector on a European level. The policy relevance of the results is also discussed in detail

A policy relevant assessment of the environmental impacts of organic farming

Organic farming has become an important aspect of European agri-environmental policy. Since the implementation of EC Reg. 2078/92, the EU promotes organic farming based explicitly on its positive effects on the environment. The objective of this paper is to contribute to a better understanding of organic farming's effects on the environment in comparison to conventional farming and to discuss the policy relevance of these issues. For this purpose the OECD set of environmental indicators for the agricultural sector has been adapted, taking into consideration only those indicators that are directly affected by the system of organic farming, as are the indicator categories ecosystem, natural resources, farm input and output, and health and welfare. Based on a survey of specialists in 18 European countries (all EU-member states plus NO, CH, and CZ) using a structured questionnaire and an extensive literature review, a conclusive assessment is given for each of the indicator categories. For most of the chosen indicator categories organic farming performs better than conventional farming on a per ha basis. These results are discussed with respect to their policy relevance. An increase in the area of organic farming would clearly improve the environmental performance of agriculture, as long as food production level is not a limiting factor. The question of whether there are other agri-environmental means of achieving a desired level of environmental performance that might be cheaper for society than organic production is discussed. It is concluded that the support of organic farming can be a useful part of the agri-environmental tool box, however, other, more specific instruments are also needed. Organic farming seems especially useful if broad environmental concerns are to be addressed

Using Eco-schemes in the new CAP: a guide for managing authorities

This guide has been developed primarily for policy makers and Member State officials involved in the national and regional programming processes of the CAP Strategic Plans (CSPs). This process might involve different administrative levels (national, regional, local), different political fields (agriculture, environmental, food and health ministries), different public bodies (paying agencies, environmental agencies, rural development offices) depending on the administrative setting of each MS. In addition, the guide provides support to other stakeholders and practitioners from the public and private sectors and civil society (including agricultural, environmental, food, health and consumer NGOs), with a direct or indirect involvement in the programming and evaluation process of the CSPs. Since these new plans will have a strong impact on MS environments, agricultural sectors, rural areas, etc., the engagement of all stakeholders will be an important asset for supporting an effective implementation of the CSP objectives. There are many others with potential interests in the contents of this guide. EU citizens have demonstrated their increasing interest in the contents of the CAP objectives and policy framework, as demonstrated both by civil society initiatives and consumption decisions. The contents of this guide may therefore also be of interest to other societal actors with interests in agricultural and environmental policies, such as researchers, journalists, trade unions, and civil society organizations. However, the guide is intentionally more focused on the technical needs of those involved in CSP development and implementation

Agrarpolitische Bewertung der Umwelteffekte des ökologische Landbaus

Der ökologische Landbau war ursprünglich ein Teilbereich der Landwirtschaft, der sich weitgehend unabhängig von staatlichen Einflüssen entwickelt hat. Seit Ende der 80er Jahre des vorigen Jahrhunderts nahm der direkte staatliche Einfluss zu, und heute gibt es kein EU-Land mehr, indem der ökologische Landbau nicht direkt durch staatliche agrarpolitische Maßnahmen gefördert wird. Die wichtigste Begründung, die für die politische Förderung des ökologischen Landbaus genannt wird, sind seine positiven Umwelteffekte. Da es sich bei Umweltgütern um öffentliche Güter handelt, werden diese von den Wirtschaftssubjekten in zu geringem Umfang bereitgestellt. Um eine gesamtwirtschaftlich optimale Lösung zu erreichen, sind daher staatliche Eingriffe gerechtfertigt. Diese Argumentationsweise lässt sich auch auf das Beispiel des ökologischen Landbaus anwenden. Um eine umfassende Informationsbasis auf gesamteuropäischer Basis zu schaffen, wurde eine Expertenbefragung in 18 europäischen Ländern durchgeführt. Anhand eines strukturierten Fragebogens wurden die Experten angeleitet, die jeweilige nationale Literatur zur Umweltrelevanz des ökologischen Landbaus zusammenzufassen. Die Ergebnisse der Expertenbefragung zeigen auf Ebene der einzelnen Umweltindikatoren, dass der ökologische Landbau in allen Fällen bei dem vorgenommenen flächenmäßigen Vergleich gleich, besser oder viel besser als der konventionelle Landbau eingestuft wird. Dieser Vergleich liefert jedoch ohne eine weitere Interpretation keinen unmittelbaren Beitrag zur agrarumweltpolitischen Bedeutung des ökologischen Landbaus. Dieser Artikel verdeutlicht weiterhin, welche Fragen sich mit Hilfe des vorgenommenen Vergleichs beantworten lassen und wo die Grenzen der Interpretierbarkeit des Systemvergleichs liegen

Scope and precision of sustainability assessment approaches to food systems

With sustainability within food systems becoming an increasingly important issue, several approaches that claim to assess the sustainability of farms, farming systems, and supply chains have been developed. Looking more closely at these sustainability impact assessment approaches, we discerned considerable differences between them in terms of scope, the level of assessment, and the precision of indicators used for impact assessment. Our aim was to classify and analyze a range of available sustainability impact assessment approaches with respect to scope and precision. From a total of 35 sustainability assessment approaches, we selected 6 for a detailed comparison. From our analysis, we concluded that there are 3 different types of trade-offs in these approaches: between different kinds of scope, between different indicators for precision and trade-offs, and between the scope and precision. Thus, one-size-fits-all solutions, with respect to tool selection, are rarely feasible. Furthermore, as indicator selection determines the assessment results, different and inconsistent indicators can lead to contradictory assessment results that may not be comparable. To overcome these shortcomings, sustainability impact assessments should include a precise definition of the notion of “sustainability” along with a description of the methodological approach and the indicator sets and should aim for harmonization of indicators and assumptions. Global initiatives such as the Sustainability Assessment in Food and Agriculture Systems (SAFA) Guidelines are a helpful step toward shedding light on the differences of these approaches and making the assessment results more comparable

Opportunities for farming in alpine countries – pathways to truly grassland-based beef and milk production in Austria and Switzerland

Farming in the alpine countries of Austria and Switzerland fulfils important economic, socio-cultural and ecological functions for society. However, even though both Austria and Switzerland have increasingly focused their agricultural policy towards ecology, in both countries negative environmental impacts of agriculture still have to be reduced massively

Spin- and entanglement-dynamics in the central spin model with homogeneous couplings

We calculate exactly the time-dependent reduced density matrix for the central spin in the central-spin model with homogeneous Heisenberg couplings. Therefrom, the dynamics and the entanglement entropy of the central spin are obtained. A rich variety of behaviors is found, depending on the initial state of the bath spins. For an initially unpolarized unentangled bath, the polarization of the central spin decays to zero in the thermodynamic limit, while its entanglement entropy becomes maximal. On the other hand, if the unpolarized environment is initially in an eigenstate of the total bath spin, the central spin and the entanglement entropy exhibit persistent monochromatic large-amplitude oscillations. This raises the question to what extent entanglement of the bath spins prevents decoherence of the central spin.Comment: 8 pages, 2 figures, typos corrected, published versio

Produktionsverfahren des Ökologischen Landbaus in Baden-Württemberg

Diese Datensammlung ist als Hilfsmittel für die Betriebsplanung gedacht. Es stellt standardisierte Produktionsverfahren des Ökolandbaus in Baden-Württemberg dar, wobei die wichtigsten Verfahren des Ackerbaus, der Rindviehhaltung, des Feldfutterbaus und des Grünlandes aufgeführt sind. Die Ausgleichszahlungen und Prämien sind bis zum Jahr 2002/2003 aufgeführt: Für die Deckungsbeitragsrechnung wurde das Jahr 2002/2003 berücksichtigt. Als Maßnahme des MEKA (Marktentlastungs- und Kulturlandschaftsausgleichsprogramm) ist die Beibehaltung des ökologischen Landbaus in die Berechnung mit einbezogen

Impurity spin relaxation in S=1/2 XX chains

Dynamic autocorrelations $$ (\alpha=x,z) of an isolated impurity spin in a S=1/2 XX chain are calculated. The impurity spin, defined by a local change in the nearest-neighbor coupling, is either in the bulk or at the boundary of the open-ended chain. The exact numerical calculation of the correlations employs the Jordan-Wigner mapping from spin operators to Fermi operators; effects of finite system size can be eliminated. Two distinct temperature regimes are observed in the long-time asymptotic behavior. At T=0 only power laws are present. At high T the x correlation decays exponentially (except at short times) while the z correlation still shows an asymptotic power law (different from the one at T=0) after an intermediate exponential phase. The boundary impurity correlations follow power laws at all T. The power laws for the z correlation and the boundary correlations can be deduced from the impurity-induced changes in the properties of the Jordan-Wigner fermion states.Comment: Final version to be published in Phys. Rev. B. Three references added, extended discussion of relation to previous wor