-
Cotton Gin
Eli Whitney -
Period: to
Ag sciece
-
Iron plow
Thomas Jefferson -
Grain Reaper
Cyrus McCormick -
seed Planter
Henry Blair -
Cotton Planter
Henry Blair -
Steel moldbord plow
John Deere -
Corn Picker
Edmund Quincy -
Barbed wire
Joseph Glidden -
Milking machine
Anna Baldwin -
Perishable food Preservation
Thomas Elkins -
soil improvement and crop rotaion
Goerge Washington -
Tractor
Ben Holt -
ffa becomes a national organisation
-
creed got adopted
-
FFA
receved a Federal Charter from congress -
FFA and NFA merged
-
Girls joined the FFA
-
Gene gun
John Sanford -
FFA symbol changed
-
Tractor based GPS
-
Robotic Milking Machines