| 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
|
Diagnosing zinc deficiency by plant analyses for wheat under field conditions.
• 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 |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Replicated |
| 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).
|
