Critical level for copper deficiency of wheat grown on soils of the lake Grace - Newdegate districit of Western Australia

1987

Research organisaton

Trial details

Researcher(s) KG Adcock
Ross Brennan
JW Gartrell
Year(s) 1987
Contributor Department of Agriculture and Food WA
Trial location(s) Lake Grace district, WA
Critical level for copper deficiency of  wheat grown on soils of the lake Grace - Newdegate districit of Western Australia locations
Aims

Diagnosing zinc deficiency by plant analyses for wheat under field conditions.

Key messages

• 5 field experiments were conducted in the Lake Grace - Newdegate district to calibrate a plant test for diagnosing copper deficiency in wheat  grown over 3 seasons.

 • The results of the experiments  indicated a diagnostic critical level of 2.3 mg Cu/kg  in whole shoots while for the youngest fully emerged blades (YEB) a diagnostic critical level of 1.2 mg Zn/kg at mid-tillering indicated a critical level.

•The whole shoot appeared less reliable than the YEB particulalrly of the wheat growth stages.

Lead research organisation N/A
Host research organisation Department of Agriculture and Food WA
Related program More Profit from Crop Nutrition
Acknowledgments N/A
Other trial partners Not specified

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Crop: Nutrition
Trial type Experimental
Trial design Replicated

Lake Grace district 1987

Sow rate or Target density 55-60 kg wheat seed/ha
Sowing machinery

8 runs of a modified plot seeder. Rows at 17.5 cm.

Sow date Not specified
Harvest date Not specified
Plot size 1.4m x 30m
Plot replication 3
Fertiliser

Plots sown double width to allow continuous sampling on  half as wwhole shoots, dry matter cuts and YEB were taken

150 -200 kg Superphosphate.

Zinc basal applied at 1.5 kg Zn /ha; Mo applied at 300 gram Mo trioxide/ha,

4 rates of copper applied as sulfate in factorial combination with 3 - 4 rates of nitrogen applied as Agran 34 (ammonium nitrate).

 



Trial last modified: 28-05-2019 11:47am AEST