... emissions. A number of protocols followed ratification of the Convention, including the 1988 Protocol on the Control of Emissions of NitrogenOxides (NOx) and their Transboundary Fluxes, and the ... results.Eur.J. Agron. 1 0:1 85–9597. Mulholland BJ, Craigon J, Black CR,Colls JJ, Atherton J, Landon G. 1998.Effects of elevated CO2 and O3 on the rate and duration of grain growth and harvestindex ... be-cause the sources of O3pollution that are evaluated, the crops that are considered, the dose-response functions that are used, and the assumed economic environmen-tal conditions differ considerably....