Penetrometer measurements for screening soil physical variability
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[1] W. Ehlers,et al. Penetration resistance and root growth of oats in tilled and untilled loess soil , 1983 .
[2] K. Barley,et al. The penetration of clays by fine probes and root tips , 1969 .
[3] K. Barley,et al. The influence of soil strength on the penetration of a loam by plant roots , 1965 .