Evaluation of four zinc fertiliser sources in two soils from the Darling Downs, Queensland

1996

Research organisatons

Trial details

Researcher(s) CW Dowling and IB Virgen
Year(s) 1996
Contributor South Australian Research and Development Institute
Trial location(s) Toowoomba, QLD
Further information View external link
Evaluation of four zinc fertiliser sources in two soils from the Darling Downs, Queensland locations
Aims

To conduct an evalutation of four zinc fertiliser sources in two soils.

Key messages
  • Zinc was applied at four rates as either zinc sulphate (35% Zn), zinc oxide (83% Zn), zinc oxysulphate (18% Zn) or as granulock STZ (20.4% P, 2.5% Zn).
  • Dry matter yield, tissue Zn concentration and plant Zn uptake were measured. Co-granulated zinc oxide and MAP (ST-Z) produced the dry matter response similar to zinc sulphate, with zinc oxysulphate and zinc oxide producing similar but lower yields.
  • It is proposed that the difference in effectiveness between STZ (zinc oxide based) and zinc oxide is as a result of a synergistic effect between the close proximity of the P and Zn in each particle rather than any change in chemical composition during manufacture.
  • The mechanism for enhanced Zn uptake with STZ may be a result of root proliferation around P concentrations aiding Zn uptake.
Lead research organisation N/A
Host research organisation Incitec Pivot Fertilisers
Related program More Profit from Crop Nutrition
Acknowledgments N/A
Other trial partners Not specified

Method

Crop type Wheat
Treatment type(s)
  • Fertiliser: Form
Trial type Experimental
Trial design Replicated

Toowoomba 1996

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser

Zinc was applied at four rates as either zinc sulphate (35% Zn), zinc oxide (83% Zn), zinc oxysulphate (18% Zn) or as granulock STZ (20.4% P, 2.5% Zn).



Trial last modified: 10-10-2019 11:08am AEST