Compaction is an issue that just won't go away. It affects the majority of farmers and can have severe impact on yields. Compaction can be caused in a myriad of ways, including rain, tillage, wheel traffic, and minimal crop rotation. "I once heard ifa field has been tilled, rained on, and had fertilizer or chemicals put on it, it has compaction," says Bill Darrington, who farms in Persia, Iowa. "It's compacted because we have disrupted the natural environment. Nearly all soils have one natural compaction zone. But it is the other two or three that can be most yield limiting that we, as farmers, are responsible for."
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