Koen Dillen

Coexistence of genetically modified (GM) and non-GM crops in the European Union. A review

The adoption of genetically modified (GM) crops in the European Union (EU) raises questions on the feasibility of coexistence between GM and non-GM crops. Regulations to ensure that different cropping systems can develop side-by-side without excluding any agricultural option are currently implemented or developed by member states. The aim of this review is to explore whether nationally or regionally proposed coexistence strategies comply with the general principles established by the European Commission that ask for science-based and proportionate coexistence measures. In the first part, existing legal requirements and potential sources of adventitious mixing are reviewed. It is discussed what type of coexistence measures might be necessary to keep GM inputs below the legal tolerance threshold of 0.9%. Concentrating on cross-fertilisation as the major biological source of adventitious mixing in maize, it is then assessed to which extent available scientific data on cross-fertilisation can explain the diversity of currently proposed isolation distances by several member states. In the second part, it is analysed whether currently proposed isolation distances reflect contending policy objectives towards GM crops that largely exceed the economic scope of coexistence. It is investigated how coexistence is intersecting with a wider debate about the role of GM crops in agriculture. Based on the analysis of existing cross-fertilisation data, it is concluded that some of the currently proposed isolation distances are not in line with the coexistence principles laid down by the European Commission: they are (i) excessive from a scientific point of view; (ii) difficult to implement in practice; (iii) rarely proportional to the regional heterogeneity in the agricultural landscape; and (iv) not proportional to the farmers’ basic economic incentives for coexistence. Hence, the range of proposed isolation distances cannot simply be explained by different interpretations of available scientific data, possible error intervals and remaining uncertainties inherent in the scientific process. It is argued that other than scientific issues must be at play. One might thus claim that coexistence has become an arena of contending values and visions on the future of agriculture and on the role GM crops might play therein.

On the competitiveness of Diabrotica virgifera virgifera damage abatement strategies in Hungary: a bio-economic approach

Diabrotica virgifera virgifera Le Conte or western corn rootworm (WCR) is a major pest of cultivated maize, Zea mays L., introduced into Europe in 1992. Since then, the beetle spread through Central Europe, leading to a continuous pest population in 11 European countries. This article presents an economic assessment of different damage abatement strategies against this invasive species in the Hungarian maize sector. A bio‐economic model, using Monte Carlo sampling, estimates the potential damage from WCR under no control and the value created by Bt maize, seed treatment, soil insecticides and cultural control. At the same time, potential market shares for the different damage abatement options under perfect information are deducted. The potential damages under a no control scenario are estimated at €176/ha for grain maize farmers on average, which points out the need for well‐designed damage abatement strategies. For land‐constrained farmers cultural control is a valuable damage abatement strategy, being the optimal choice in 69% of the cases. In monoculture Bt maize is the best option as it creates the highest value in 78% of the cases. However, as Bt maize active against WCR is not deregulated in the European Union, soil insecticides in 54% of the cases and seed treatment in 46% of the cases are the rational choices. As the value created by Bt maize is positive, not deregulating Bt maize in Hungary leads to benefits foregone ranging from €16/ha for land‐constrained grain farmers to €49/ha in the case of silage maize under monoculture. Finally, the results of the sensitivity analysis can be used to develop a multi‐criteria tool to aid farmers in applying the appropriate damage abatement strategy. This could decrease the dependency of farmers on scouting techniques and economic thresholds of WCR presence.

Bred for Europe but grown in America: the case of GM sugar beet

In 2007, a genetically modified herbicide tolerant (GMHT) sugar beet (Beta vulgaris L.) tolerant against glyphosate, a commonly used broad spectrum herbicide, was commercialised in the USA and Canada. The speed of uptake of GMHT sugar beet by farmers has no precedent. While it took the hitherto most successful GM crop in the USA 15 years to reach an adoption rate of 95%, GMHT sugar beet achieved this figure after only 2 years. This paper traces the history of GMHT sugar beet which started at the European continent and describes the economic and environmental impact of its introduction in the USA. The results suggest that the rapid adoption is economically sound with adopter rents averaging

Contribution to the economic impact assessment of policy options to regulate animal cloning for food production with an economic simulation model

257/ha. Moreover the adoption has a high potential to reduce the environmental impact of sugar beet production. Will these experiences bring GMHT sugar beet back to its roots in Europe?

Developing Solutions for Coexistence in the EU—Legal, Technical, and Economic Issues

The EU is currently evaluating different policy options towards the use of cloning or products derived from cloned animals in the food chain. This study presents a first attempt to quantify the likely effects of different policy scenarios on international trade and EU domestic production. In the context of the Impact Asessment process the JRC was requested to simulate via a modelling study the economic impact of selected policy options. Based on a literature review and the specific constraints for this study, the choice was made to perform the analysis through the use of a computable general equilibrium model and focus on the dairy and beef sector. The different model scenarios are constructed based on combinations of the discussed policy options such as a ban or traceability and labelling requirements with the productivity increase associated with cloning. The results show that only the situation where trade with countries using the technique of cloning is suspended has an effect on competitiveness. This suspension could be due to express prohibitions or a de facto decision by exporters when traceability and labelling costs increase. Under this scenario imports drop significantly which is followed by a slight increase in domestic production and prices, especially for beef and cattle.

Regulating coexistence in Europe: Beware of the domino-effect!

Coexistence policy in the European Union (EU) is designed to avoid unintended and adventitious presence of genetically modified (GM) crops in other products, preventing the potential economic loss from admixture (European Commission 2010). Coexistence is a direct consequence of the decision to provide consumers with a well informed choice when it comes to food produced from GM crops. While a mandatory labeling regime identifies GM produce in the market place, the availability of both GM and non-GM depends on the possibility of a downstream supply chain to provide both goods. Therefore, what is commonly called “coexistence measures” are a set of technical, administrative, and liability rules set out to avoid the unintended presence of GM material in non-GM crops at the farm level. Hence coexistence measures are not environmental risk management tools but tools to resolve potential market failures arising from GM crop cultivation in the EU.