Close up of John Deere Combine largest made by Deere with Graco corn head 24 row header with 20" spacing which means it's 40 ft wide. The Graco corn head chops stalks after the ear corn has been pulled off. Needless to say this machine is very hungry and eats copious amounts of grain ie corn for breakfast. lol.
Trac Tractor pulling a Kinze Grain Cart which holds 1100 bushels of corn or soybeans and safely fills a semi trailer which handles 800 to 900 bushels of crop allowing the combine to not stop on the ends to unload.
thru 1960's. The size of implements has tripled.