Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - An analysis of ozone damage to historical maize and soybean yields in the United States
AU - McGrath, Justin M.
AU - Betzelberger, Amy M.
AU - Wang, Shaowen
AU - Shook, Eric
AU - Zhu, Xin-Guang
AU - Long, Stephen P.
AU - Ainsworth, Elizabeth A.
PY - 2015/11/17
Y1 - 2015/11/17
N2 - Numerous controlled experiments find that elevated ground-level ozone concentrations ([O-3]) damage crops and reduce yield. There have been no estimates of the actual yield losses in the field in the United States from [O-3], even though such estimates would be valuable for projections of future food production and for cost-benefit analyses of reducing ground-level [O-3]. Regression analysis of historical yield, climate, and [O-3] data for the United States were used to determine the loss of production due to O-3 formaize (Zeamays) and soybean (Glycine max) from 1980 to 2011, showing that over that period production of rain-fed fields of soybean and maize were reduced by roughly 5% and 10%, respectively, costing approximately $9 billion annually. Maize, thought to be inherently resistant to O-3, was at least as sensitive as soybean to O-3 damage. Overcoming this yield loss with improved emission controls or more tolerant germplasm could substantially increase world food and feed supply at a time when a global yield jump is urgently needed.
AB - Numerous controlled experiments find that elevated ground-level ozone concentrations ([O-3]) damage crops and reduce yield. There have been no estimates of the actual yield losses in the field in the United States from [O-3], even though such estimates would be valuable for projections of future food production and for cost-benefit analyses of reducing ground-level [O-3]. Regression analysis of historical yield, climate, and [O-3] data for the United States were used to determine the loss of production due to O-3 formaize (Zeamays) and soybean (Glycine max) from 1980 to 2011, showing that over that period production of rain-fed fields of soybean and maize were reduced by roughly 5% and 10%, respectively, costing approximately $9 billion annually. Maize, thought to be inherently resistant to O-3, was at least as sensitive as soybean to O-3 damage. Overcoming this yield loss with improved emission controls or more tolerant germplasm could substantially increase world food and feed supply at a time when a global yield jump is urgently needed.
KW - ozone
KW - soybean
KW - maize
KW - air pollution
KW - agriculture
KW - TROPOSPHERIC OZONE
KW - CLIMATE-CHANGE
KW - ATMOSPHERIC CO2
KW - AIR-POLLUTION
KW - CROP YIELDS
KW - CULTIVARS
KW - PLANT
KW - O-3
KW - PHOTOSYNTHESIS
KW - AGRICULTURE
U2 - 10.1073/pnas.1509777112
DO - 10.1073/pnas.1509777112
M3 - Journal article
VL - 112
SP - 14390
EP - 14395
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
SN - 0027-8424
IS - 46
ER -