Study: Ozone Reduces Soybean Yields

Exposure to ozone reduces soybean yields, according to researchers with the USDA Agricultural Research Service. The Soybean Free Air Concentration Enrichment experiments showed that exposure to 82 parts per billion (ppb) ozone reduces soybean yields by an average 23 percent across all 10 varieties. With ozone concentrations rising for decades, scientists hope the study provides the groundwork for breeding more ozone-tolerant soybean varieties. Read more.