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Your Garden . . . with Kate Russell: Many things can cause hardpan, but bottom line is it's not good for plants
Photo courtesy www.vro.agriculture.vic.gov.au Hardpan is a layer of soil so dense that air, water, and roots can barely move through it. Unlike compacted soil, which is a general condition of soil that doesn't have enough macropores and micropores for roots, air, and water to move through, hardpan is a distinct