The study focused on ozone–temperature : increases with temperatures. Heald said although temperature and ozone are separately known to impact crop yields, "nobody has looked at these together". Depending on region and crops, the yields may be primarily sensitive to ozone —in the case of wheat— or heat —in the case of maize— alone, providing a local estimation of relative benefits of versus . The noted , "Ground-level ozone causes more damage to plants than all other air pollutants combined", highlighting the importance of air quality for agriculture. Results of studies, published in a paper by AS Heagle in 1989, show species, such as soybean, , and , lose more yield from ozone than do species such as , , and . The researchers found that ozone pollution caused 46 percent of previously heat-attributed damage to soybean crops. The model did not include the effect of rising , which has complex and potentially offsetting impacts on global food supply. The said some crops may have higher yields with increased levels of . However, global warming also increases probability of extreme crops-damaging weather events such as , , and extreme temperatures. affects distribution of weeds, pests, and . Heald noted the findings showed reduction is also important. "An air-quality cleanup would improve crop yields [...] Ozone is something that we understand the causes of, and the steps that need to be taken to improve air quality."
The study focuses on ozone–temperature : increases with temperatures. Heald said although temperature and ozone are separately known to impact crop yields, "nobody has looked at these together". Depending on region and crops, the yields may be primarily sensitive to ozone —in the case of wheat— or heat —in the case of maize— alone, providing a local estimation of relative benefits of versus . The notes , "Ground-level ozone causes more damage to plants than all other air pollutants combined", highlighting the importance of air quality for agriculture. Results of studies, published in a paper by AS Heagle in 1989, show species, such as soybean, , and , lose more yield from ozone than do species such as , , and . The researchers found that ozone pollution caused 46 percent of previously heat-attributed damage to soybean crops. The model does not include the effect of rising , which has complex and potentially offsetting impacts on global food supply. The says some crops may have higher yields with increased levels of . However, global warming also increases probability of extreme crops-damaging weather events such as , , and extreme temperatures. affects distribution of weeds, pests, and . Heald noted the findings show reduction is also important. "An air-quality cleanup would improve crop yields [...] Ozone is something that we understand the causes of, and the steps that need to be taken to improve air quality."
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