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Original Articles

Soil phosphorus testing: 2. Assessment of a rotary blade soil sampler for collecting soil samples to measure soil test phosphorus

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Pages 2385-2394 | Published online: 11 Nov 2008

References

  • Bolland , M. D. A. 1992 . Effect of sampling depth on bicarbonate soil phosphorus test values . Fert. Res. , 32 : 121 – 124 .
  • Colwell , J. D. 1963 . The estimation of phosphorus fertiliser requirements of wheat in southern New South Wales by soil analysis . Aust. J. Exp. Agric. Anim. Husb. , 3 : 190 – 197 .
  • Cornish , P. S. 1987 . Effects of direct drilling on the phosphorus uptake and fertiliser requirements of wheat . Aust J. Agric. , 38 : 775 – 790 .
  • Fixen , P. E. and Grove , J. H. 1991 . “ Testing soils for phosphorus ” . In Soil Testing and Plant Analysis , Edited by: Westerman , R. L. 141 – 180 . Madison , WI : Soil Science Society of America .
  • James , D. W. and Wells , K. L. 1991 . “ Soil sample collection and handling: Technique based on source and degree of field variability ” . In Soil Testing and Plant Analysis , Edited by: Westerman , R. L. 25 – 44 . Madison , WI : Soil Science Society of America .
  • Murphy , J. and Riley , J. P. 1962 . A modified single solution method for the determination of phosphate in natural waters . Anal. Chem. Acta , 27 : 31 – 36 .

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