Scientists at CIAT recently used DNA fingerprinting, which analyzes the genetic characteristics or the unique identity of organisms, in this case cassava, to get clearer picture of the adoption of CIAT-bred varieties and, ultimately, enhance advice to farmers on how to better manage their crops. Together with Corpoica, CIAT has produced 16 improved varieties of cassava over the last eight years. Researchers collected 434 stem samples from 217 farmers in Cauca, Colombia, and DNA fingerprinting identified 120 varieties, 9 of which were improved. The study revealed disparities in perceived and actual use of landraces versus improved cassava. Roughly 17% of the households surveyed said they were cultivating improved varieties, but DNA profiling discovered that about 9% actually did so. DNA fingerprinting allows us to better measure CIAT’s contribution to the world and the experience in Cauca has inspired scientists to apply DNA fingerprinting to more impact studies.