and þ0.3e0.5% for maize. Regional discrepancies are apparent,
however, due to differences in projected O3 precursor emissions
among industrialized versus emerging economies. Year 2030 wheat
yields decrease in South Asia by þ4.1% on average, with less severe
additional losses (wþ1e2%) predicted for other developing regions
(Latin America, East Asia, and Africa and the Middle East).