| 16th-18th
century |
Wooden Plows
were used to till the soil to create a condition in
which seeds could be planted |
| 1819 |
Jethro Wood
patented the cast-iron plow with interchangeable parts |
| 1833 |
John Lane invented
the first steel plow |
| 1842 |
William Parlin
produced steel plows |
| 1850-60 |
George W. Brown
manufactured the first corn planter with a "sled
runner" to open the furrow for the seed. |
| 1865 |
John Deere
received a United States patent for the steel plow |
| 1877 |
Deere and Mansur
corn planters were produced with greater seed placement
and spacing accuracy |
| 1860-80 |
Disc Harrows
introduced |
| 1916 |
One-way disc
plows were developed by Henry Krause |
| 1933 |
Fred Hoeme
(Inventor from Oklahoma) and W.T. Graham (Manufacturer
from Texas) produced the first chisel plows - Graham-Hoeme
Plow |
| 1950-80 |
Chesel and
Coulter-Chisel Plows became popular for conservation
tillage practices |
| 1970-80 |
No-till planting
made possible with coulters and residue managers |
| 1990 |
Strip-till
emerged as a method of conservation farming |
