| But Donahue tells us that the switch from grains to hay, from tillage to meadow did not signal a retreat. |
| Conventional tillage is effective for reducing populations of many biennial and perennial weeds that may arise from rhizomes or rootstocks. |
| As a result, the yield potentials of such soils are usually higher under no-till or ridge tillage than under moldboard plowing. |
| The use of summer fallow, crop rotation, and improved tillage were even less common than in Ontario. |
| Disease-resistant varieties, crop rotation, and tillage are especially important in management of wheat diseases. |
| Reduced tillage, crop rotations, and dispersed livestock all reduce energy needs and make more efficient use of renewable resources. |
