What is in this article?:
- How To Avoid Soil Compaction: True, False Q&A
- 2. Topsoil and subsoil compaction have different effects on yield.
- 3. Freeze-thaw cycles alleviate soil compaction caused by machinery.
- 4. Clay soils are more easily compacted than coarser soils.
- 5. No-till soils resist compaction better than tilled soils.
- 6. Limiting axle loads is the key to avoiding subsoil compaction.
- 7. Tracks are better than tires for reducing soil compaction.
- 8. Deep tillage corrects the harmful effects of compaction.
- 9. You need ‘steel’ to alleviate compaction.
- 10. Lowering tire inflation pressure reduces surface compaction.
- QUIZ: Assess your soil compaction risk
Soil compaction is invisible, but its effects are clear to see: cloddy soil, delayed crop emergence, restricted root growth, stunted plants, low water infiltration, poor nutrient uptake and lost yield.
And reduced production isn’t the only penalty. Soil compaction also harms the environment, leading to more runoff and soil erosion.
The threat of soil compaction is far greater today than in the past because of the increasing size and weight of farm equipment. Although the risk of new compaction is low when the soil is very dry – as it is in much of the Corn Belt – existing compaction makes crops more vulnerable to damage by drought.
6. Limiting axle loads is the key to avoiding subsoil compaction.
Answer: True. “To avoid subsoil compaction, keep axle loads below 10 tons/axle,” Duiker says. That limits compaction to the top 10 or 12 in. of soil, where natural biological processes can help alleviate the damage. Reeder agrees: “Our compaction research includes 10-ton/axle loads. The yield loss is small, and usually disappears within two years.”