Studies of the Effects of Tilling vs. No Tilling on Crop Yields
| Authors | Crop | Crop yield with tilling (kilograms per hectare) | Crop yield with no tilling (kilograms per hectare) |
|---|---|---|---|
| Danijel Jug and colleagues | winter wheat | 4,860 | 3,910 |
| Carlos Cantero-Martinez and colleagues | winter barley | 2,693 | 3,136 |
| R.K. Jat and colleagues | maize | 3,000 | 5,200 |
| Gevan Behnke and colleagues | soybeans | 4,285 | 3,798 |
Danijel Jug and colleagues found that tilling—the practice of turning soil with hoes, plows, or other machines before planting crops—was associated with an increased yield of winter wheat. But some studies of other crops have found the opposite effect, raising the question of whether the increase in yield found by Jug and colleagues is specific to their study crop. However, this doesn’t seem to be the case: __________