Extractable zinc in particle size fractions of soils from Western Australia and Queensland

1990

Research organisatons

Trial details

Researcher(s) J Armour, G Ritchie and A Robson
Year(s) 1990
Contributor South Australian Research and Development Institute
Trial location(s) Perth, WA
Further information View external link
Extractable zinc in particle size fractions of soils from Western Australia and Queensland locations
Aims

The zinc content of particle size fractions of 12 mainly zinc deficient soils was measured by extraction with three contrasting extractants.

Key messages
  • The zinc content of particle size fractions of 12 mainly zinc deficient soils was measuredly extraction with three contrasting extractants.
  • The soils, which ranged from sands to a black earth, were from Western Australia and Queensland Particle size fractions were obtained by sieving and sedimentation after ultrasonification of soil suspended in deionized water.
  • High clay soils had higher concentrations (mean 54 mg kg-I) of acid extractable –zinc than low clay soils (mean 2 mg kg-I)After fractionation.
  • Lowest acid extractable - and DTPA-zinc were found in coarse sand fractions and concentrations increased with decreasing particle size.
  • Clay plus silt fractions contained 60-99% of the whole soil acid extractable –zinc.
  • The CaCl2-zinc concentrations were very low (<0.5 ug/kg-I) for all soils.
  • In whole soils, DTPA-zinc was only a small proportion of the acid extractable-zinc.
  • Acid extractable -zinc was correlated with oxalate extractable Fe and with oxalate aluminium whereas DTPA-zinc was correlated with oxalate extractable Fe.The AE- and DTPA-zinc were correlated with organic carbon only in some fractions.
  • The DTPA- and CaCl2-zinc were not correlated with acid extractable -zinc content, nor was DPTA-zinc correlated with CaCl2-zinc in whole soils or fractions.
Lead research organisation N/A
Host research organisation University of Western Australia
Related program More Profit from Crop Nutrition
Acknowledgments N/A
Other trial partners Not specified

Method

Crop type No crop specified
Treatment type(s)
  • Soil
Trial type Experimental
Trial design Replicated

Perth 1990

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Other trial notes

Armour J, Ritchie G, Robson A (1990) Extractable zinc in particle size fractions of soils from Western-Australia and Queensland. Soil Research 28, 387-397.

Trial report and links


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Trial last modified: 21-10-2019 09:27am AEST