Tissue testing of copper for wheat grown on a yellow brown gravelly sand at Lake Grace WA

1975

Research organisaton

Trial details

Researcher(s) N/A
Year(s) 1975
Contributor Department of Agriculture and Food WA
Trial location(s) Lake Grace District, WA
Tissue testing of copper for wheat grown on a yellow brown gravelly sand at Lake Grace WA locations
Aims

To investigate the effects of rates and granule size of copper containing superphosphate on wheat yields grown on yello9w brown gravelly  soil

Key messages

Cu fertiliser greatly increased yield from 0.6 t/ha to 1.60 t/ha.  

In general oxide source was equal to or superior to the sulfate source in wet mixes. In dry mixes in the same trial Cu oxide was only 66 % as effective as the sulfate.

A recent development in diagnosing Cu problems by a technique of using the youngest fully emerged leaf. Copper concentrations of less than 1.3 ppm (mg/kg) in the yougest fully emerged tissue , suggest that soil Cu deficiency will reduce grain yield .

The tissue testing technique was used on arange of Cu trila in the district to confirm the method (UWA Lonragan, Robson , Snowball)

For the first time it has been possible to distinguish crop damage caused by Cu deficiency from that caused by other factors such as frost, drought and root rots which produce similar symptoms.

Lead research organisation N/A
Host research organisation Department of Agriculture and Food WA
Related program More Profit from Crop Nutrition
Acknowledgments

Youngest fully emerged leaf method developed by Loneragan, Robson , Snowball of UWA


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 1975

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

12 run drill at 17.5 cm spacings

Sow date Not specified
Harvest date Not specified
Plot size 2.1m x 50m
Plot replication 3
Fertiliser

Zn fertiliser basal @ 1 kg Zn

Cu nil, 2.75, 5.5, 8.25 & 11 kg Cu sulfate /ha

Trial report and links


No trial reports or attachments found


Trial last modified: 28-05-2019 11:45am AEST