An agronomic assessment of greenhouse gas emissions from major cereal crops

Abstract Agricultural greenhouse gas ( GHG ) emissions contribute approximately 12% to total global anthropogenic GHG emissions. Cereals (rice, wheat, and maize) are the largest source of human calories, and it is estimated that world cereal production must increase by 1.3% annually to 2025 to meet growing demand. Sustainable intensification of cereal production systems will require maintaining high yields while reducing environmental costs. We conducted a meta‐analysis (57 published studies consisting of 62 study sites and 328 observations) to test the hypothesis that the global warming potential ( GWP ) of CH 4 and N 2 O emissions from rice, wheat, and maize, when expressed per ton of grain (yield‐scaled GWP…

• IR
  Irish Research Council
• DO
  Department of Plant Sciences, University of California, Davis