Copper deficiency of wheat in Victoria. 1. Cause

1987

Research organisatons

Trial details

Researcher(s) AG Flynn and WK Gardner
Year(s) 1987
Contributor South Australian Research and Development Institute
Trial location(s) Site 1, Wimmera, VIC
Further information View external link
Copper deficiency of wheat in Victoria. 1. Cause locations
Aims

To investgate the cause(s) of copper deficiency of meat in Victoria.

Key messages
  • 21 field trials across Southern Wimmera.
  • At 18 trials the treatments included 2 kg ha of copper spray-applied to soil and incorporated at sowing; foliar applied copper (75 g Cu/ha) at late tillering; and 150 g Cu/ha at booting; a nil treatment.
  • The other 3 trials investigated correction of previously diagnosed Cu deficiency.
  • One of the most responsive sites in 1984 was reinvestigated in 1985 using similar treatments on an area which had not previously received copper.
  • Grain yield and micronutrient of YEBS for Cu were measured.In 1984 grain yield response to applied copper was 0146 t ha-1 for wheat grown on the Yellow Duplex soils and 1.32 t ha for the Deep Sand site.
  • The Red Duplex and Non-Friable Clay soils were not Cu deficient.
  • In 1985 responses on yellow duplex soils (important cropping soils in region) were much smaller: attributed to fact it was a drier year than 1984 (no waterlogging).
  • In 1984, leaf Cu concentration was initially sufficient but fell below the critical minimum after the onset of waterlogging and remained low until the soil dried out.
Lead research organisation N/A
Host research organisation Agriculture Victoria
Related program More Profit from Crop Nutrition
Acknowledgments N/A
Other trial partners Not specified

Method

Crop type Wheat
Treatment type(s)
  • Fertiliser: Rate
  • Fertiliser: Timing
  • Fertiliser: Form
Trial type Experimental
Trial design Unknown

Wimmera 1987

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

At 18 sites, treatments included 2 kg Cu applied to the soil as a spray and incorporated by sowing; Cu applied as a spray to the foliage at 75g Cu/ha at late tillering and 150 g Cu/ha at booting and a nil treatment.




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Trial last modified: 21-10-2019 09:30am AEST