AMES, Iowa — A John Deere 9750 STS combine slowly made its way through an Iowa State University research field, all the while dumping a crop of corn kernels into the combine’s hopper and ...

AMES, Iowa — A John Deere 9750 STS combine slowly made its way through an Iowa State University research field, all the while dumping a crop of corn kernels into the combine’s hopper and ...

AMES, Iowa -- A John Deere 9750 STS combine slowly made its way through an Iowa State University research field, all the while dumping a crop of corn kernels into the combine's hopper and blowing ...