01034naa a2200169 a 450000100080000000500110000800800410001910000180006024500830007826000090016149000290017050000960019952004450029565000200074065000090076077300950076910287662010-03-08       2004    bl ---       0--  u    #d1 aVAZ, C. M. P.  aUse of a combined penetrometer-TDR moisture probe for soil compaction studies.  c2004  a(ictp lecture notes, 18)  aEditores: GABRIELS, D. M. ; GHIRARDI, G. ; NIELSEN, D. R. ; SENTIS, I. P. ; SKIDMORE, E. L.  aSoil mechanical strength is an imporant soil parameter that affects root growth and water movement, and controls nutrient and contaminant transport below the rooting zone. The most common way to assess soil strength is by using a soil penetrometer, which characterizes the force needed penetration resitance (PR) depends on such soil properties as bulk density, water content and potential, texture, aggregation, cementation and mineralogy.  aFísica do Solo  aSolo  tIn: Invited presentations college on soil physics 2003. [Trieste]: s.n., 2004. p. 451-457.