Bill Preller is president of AGuru Machinery, of Congerville, Ill. Preller started as a crop consultant in the 1980s, working with no-till farmers struggling in heavy poorly drained soils. He then worked in agronomy research, engineering, product development, sales and marketing, and finally corporate management for DMI, Case, CNH and Case IH. For the last 3 years his team has been working to reset the technology of strip-till to eliminate compromise in strip-till systems.