View article

At present, there is no GM crop cultivation in Ireland. This could change in the near future however, following the inclusion of several GM maize varieties on the EU Common Seed Catalogue in 2004. Before an Irish GM tillage sector develops, information must be provided to farmers/regulators in regard to the potential economic impact of the technology and the environmental issues associated with GM crops. This project (RMIS 5211) has examined: 1. The economic cost-benefit of cultivating several GM crops (Phytophthora resistant potato, Septoria resistant wheat, Rhynchosporium resistant barley, Fusarium resistant wheat and herbicide tolerant sugar beet) 2. The environmental issue of gene flow by modelling the propensity of seven crop species (wheat, barley, sugar beet, oilseed rape, maize, potato and ryegrass) to spread their genetic material (be it GM/non-GM) through pollen/seed-mediated gene flow. The cost-benefit analysis specifically examined the impact of reduced chemical input and indicated that each GM crop tested would be more cost efficient than their conventional equivalent. Inputting the regimes and subsequent costs for the 2002 and 2003 growing season into the analysis, farmers would have returned a greater cost savings in 2002 for each of the GM crops, with the exception of potato. While a significant increase in gross margin was recorded for all GM crops, the greatest savings (€ha-1) occurred in the case of herbicide tolerant sugar beet in the absence (9.8% saving) or presence (23.2% saving) of a yield effect. Modelling a crop’s propensity to spread its genetic material (‘gene flow’) was achieved through the creation of a …