Chemigation—sometimes also known as fertigation—is the use of irrigation systems for the controlled and efficient application of fertilizer, herbicides, and other chemicals to crop fields or pasture. By using chemigation methods, farmers can both save money and avoid applying excess chemicals, which can leach into the soil. In this interview, Bob Gills, the director of global sales for Agri-Inject, the leading player in the chemigation market, speaks with Kris Polly, the editor-in-chief of Irrigation Leader, about the benefits of chemigation and why the method is well suited to markets like New Zealand, where it is not yet widespread.