00457naa a2200157 a 450000100080000000500110000800800410001910000180006024500760007826000090015465000160016365000130017965000090019270000140020177300840021515850012023-09-19       1965    bl ---       0--  u    #d1 aHOWARD, D. D.  aCalcium requerimen for penetration of subsoils by primary cotton roots.  c1965  aFertilidade  aQuímica  aSolo1 aADAMS, F.  tProcedings of the Soil Science Society America, Madisongv.29, p.558-562, 1965.