With farm equipment purchases slowing down among row-crop farmers, John Deere’s efforts to reach more diverse markets was evident at its new product introductions during a dealer event this summer in Milwaukee.

The event featured a wide range of equipment from high-horsepower tractors, utility tractors, combine headers, tillage and forage tools, as well as new data management solutions.

The attention grabbers, of course, were Deere’s mammoth 9R/9RT Series four-wheel drive and track...