in march 1991, agco bought the hesston corporation.&lt;ref name="agco-jul-1996-s-4/a"&gt;&lt;/ref&gt; because of this, they gained hay and forage equipment as well as technologies such as the grain auger (used to unload grain quickly from combines), invented in 1947 by lyle yost. hesston had a 50 percent joint venture with case international, now a part of cnh global. agco bought the white tractor line from the allied corporation's white-new idea company. in 1993, agco bought the rest of white-new idea, gaining new idea hay equipment and manure spreaders, and white planters. white new idea had a big manufacturing plant in coldwater, ohio, usa.