3: Machinery Systems Last updated Save as PDF Page ID 46882 Nicholas M. Holden, Mary Leigh Wolfe, Jactone Arogo Ogejo, & Enda J. Cummins University College Dublin and Virginia Tech via Virginia Tech Libraries' Open Education Initiative 3.1: Traction 3.2: Crop Establishment and Protection 3.3: Grain Harvest and Handling 3.4: Mechatronics and Intelligent Systems in Agricultural Machinery