Managing microbes, curbing climate gases

The federal government wants growers to use less fertilizer to help reduce greenhouse gas emissions, but continuous yield growth is needed to feed an increasingly hungry population. Manish Raizada, professor of plant science at the University of Guelph, thinks nitrogen-fixing microbes have a big role to play in this arena; plus, nitrous oxide is a far more powerful greenhouse gas compared to its lesser, but more popular cousin, carbon dioxide. Richard Farrell, associate professor at the University of Saskatchewan, talks about how greenhouse gases in agriculture are measured and what can be done to rein them in. Hosted by Robert Arnason.