Visiting UK agricultural engineer and soil expert Philip Wright says soil compaction can cause significant yield losses. In this episode of Cut the Crop, he tells Alison Stewart that while roots and biology can do most of the repair work, sometimes mechanical action is also needed.

<p>Visiting UK agricultural engineer and soil expert Philip Wright says soil compaction can cause significant yield losses. In this episode of Cut the Crop, he tells Alison Stewart that while roots and biology can do most of the repair work, sometimes mechanical action is also needed.</p>

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