| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Like planting oats after soybeans, it's the term for changing crops every few years to keep soil healthy | rotation | $800 | J | AGRICULTURE | 2018-07-04 | #7798 | |
| In the 1700s C. Townshend discovered that turnips could be the 4th crop in a 4-field system of this | crop rotation | $800 | DJ | AGRICULTURE | 1994-11-03 | #2339 |