Definition of hardpan
1 : a cemented or compacted and often clayey layer in soil that is impenetrable by roots
2 : a fundamental part : bedrock
Recent Examples of hardpan from the Web
Root constriction caused by hardpan or compacted soil, sunburn, borer insects, soil nematodes, root rot, powdery mildew and spider mites might also be affecting the tree.
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First Known Use of hardpan
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