Field Pea Blackspot Management Guide is a location and season specific weekly forecast. It accounts for varietal resistance and chemical options, agronomic yield potentials, agronomic constraints (frost and terminal drought), risks of spores showers, disease severity, and disease related yield loss. It then weighs agronomic yield loss and disease yield loss and suggests a window of sowing dates. Field pea crops should be sown so that the majority of blackspot spores (approximately 60%) have been released prior to the crop emergence.
This prediction is based on DPIRD's Blackspot Manager model using weather data from 1 January 2018 to 2 July 2018 from the nearest weather station.
Key to blackspot severity scores
| Blackspot risk | Five out of 10 years | Three out of 10 years | One out of 10 years |
|---|---|---|---|
| Low | 2 | 5 | 15 |
| Medium | 20 | 25 | 35 |
| High | 25 | 30 | 50 |
Balaklava
Last date used for prediction: 2 July 2018
Rainfall to date: 92.7mm
Days with significant stubble moisture: 51
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 3-4 | 2 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow but risk is medium | Okay to sow | Okay to sow |
| Blackspot risk | Medium | Low | Low |
Blyth (Hart)
Last date used for prediction: 2 July 2018
Rainfall to date: 111mm
Days with significant stubble moisture: 74
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Bordertown
Last date used for prediction: 2 July 2018
Rainfall to date: 138mm
Days with significant stubble moisture: 65
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Bute
Last date used for prediction: 2 July 2018
Rainfall to date: 124.1mm
Days with significant stubble moisture: 74
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Clare
Last date used for prediction: 2 July 2018
Rainfall to date: 165.4mm
Days with significant stubble moisture: 89
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Crystal Brook
Last date used for prediction: 2 July 2018
Rainfall to date: 92.9mm
Days with significant stubble moisture: 47
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 3-4 | 2 | 2 |
| Sowing guide (based on agronomic suitability) | Okay to sow, but risk medium | Okay to sow | Okay to sow |
| Blackspot risk | Medium | Low | Low |
Eudunda
Last date used for prediction: 2 July 2018
Rainfall to date: 118.6mm
Days with significant stubble moisture: 72
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Farrell Flat
Last date used for prediction: 2 July 2018
Rainfall to date: 125.7mm
Days with significant stubble moisture: 71
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Keith
Last date used for prediction: 2 July 2018
Rainfall to date: 135.9mm
Days with significant stubble moisture: 57
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 2 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Kent Town
Last date used for prediction: 2 July 2018
Rainfall to date: 163.6mm
Days with significant stubble moisture: 65
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Kimba
Last date used for prediction: 2 July 2018
Rainfall to date: 84mm
Days with significant stubble moisture: 42
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 3-4 | 3-4 | 2 |
| Sowing guide (based on agronomic suitability) | Okay to sow but risk is medium | Okay to sow but risk is medium | Okay to sow |
| Blackspot risk | Medium | Medium | Low |
Kingsford
Last date used for prediction: 2 July 2018
Rainfall to date: 125mm
Days with significant stubble moisture: 87
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Kyancutta
Last date used for prediction: 2 July 2018
Rainfall to date: 65.7mm
Days with significant stubble moisture: 44
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 3-4 | 3-4 | 2 |
| Sowing guide (based on agronomic suitability) | Okay to sow but risk is medium | Okay to sow but risk is medium | Okay to sow |
| Blackspot risk | Medium | Medium | Low |
Lameroo
Last date used for prediction: 2 July 2018
Rainfall to date: 70mm
Days with significant stubble moisture: 41
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Okay to sow but risk is high High | Okay to sow but risk is high High | Okay to sow but risk is high High |
| Blackspot risk | High | High | High |
Lock
Last date used for prediction: 2 July 2018
Rainfall to date: 85mm
Days with significant stubble moisture: 53
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 2 | 2 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Maitland
Last date used for prediction: 2 July 2018
Rainfall to date: 143.5mm
Days with significant stubble moisture: 71
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Mannum
Last date used for prediction: 2 July 2018
Rainfall to date: 64.4mm
Days with significant stubble moisture: 45
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 3-4 | 3-4 | 2 |
| Sowing guide (based on agronomic suitability) | Okay to sow but risk is medium | Okay to sow but risk is medium | Okay to sow |
| Blackspot risk | Medium | Medium | Low |
Minlaton
Last date used for prediction: 2 July 2018
Rainfall to date: 109.5mm
Days with significant stubble moisture: 52
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 3-4 | 2 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow but risk is medium | Okay to sow | Okay to sow |
| Blackspot risk | Medium | Low | Low |
Minnipa
Last date used for prediction: 2 July 2018
Rainfall to date: 57mm
Days with significant stubble moisture: 40
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 3-4 | 3-4 | 3-4 |
| Sowing guide (based on agronomic suitability) | Getting too late to sow and risk is medium | Getting too late to sow and risk is medium | Getting too late to sow and risk is medium |
| Blackspot risk | Medium | Medium | Medium |
Mount Barker SA
Last date used for prediction: 2 July 2018
Rainfall to date: 247.4mm
Days with significant stubble moisture: 102
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Murray Bridge
Last date used for prediction: 2 July 2018
Rainfall to date: 76.2mm
Days with significant stubble moisture: 47
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 3-4 | 3-4 | 2 |
| Sowing guide (based on agronomic suitability) | Okay to sow but risk is medium | Okay to sow but risk is medium | Okay to sow |
| Blackspot risk | Medium | Medium | Low |
Mypolonga
Last date used for prediction: 2 July 2018
Rainfall to date: 64.6mm
Days with significant stubble moisture: 40
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 3-4 | 3-4 | 3-4 |
| Sowing guide (based on agronomic suitability) | Okay to sow but risk is medium | Okay to sow but risk is medium | Okay to sow but risk is medium |
| Blackspot risk | Medium | Medium | Medium |
Naracoorte
Last date used for prediction: 2 July 2018
Rainfall to date: 166.8mm
Days with significant stubble moisture: 93
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Nuriootpa
Last date used for prediction: 2 July 2018
Rainfall to date: 127.2mm
Days with significant stubble moisture: 76
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Palmer
Last date used for prediction: 2 July 2018
Rainfall to date: 110.2mm
Days with significant stubble moisture: 72
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Port Broughton
Last date used for prediction: 2 July 2018
Rainfall to date: 115.9mm
Days with significant stubble moisture: 67
Riverton
Last date used for prediction: 2 July 2018
Rainfall to date: 139.9mm
Days with significant stubble moisture: 71
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Sedan
Last date used for prediction: 2 July 2018
Rainfall to date: 67.2mm
Days with significant stubble moisture: 46
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 3-4 | 3-4 | 2 |
| Sowing guide (based on agronomic suitability) | Okay to sow but risk is medium | Okay to sow but risk is medium | Okay to sow |
| Blackspot risk | Medium | Medium | Low |
Snowtown
Last date used for prediction: 2 July 2018
Rainfall to date: 132mm
Days with significant stubble moisture: 77
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Strathalbyn
Last date used for prediction: 2 July 2018
Rainfall to date: 123.2mm
Days with significant stubble moisture: 76
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Tumby Bay
Last date used for prediction: 2 July 2018
Rainfall to date: 82.7mm
Days with significant stubble moisture: 47
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 3-4 | 2 | 2 |
| Sowing guide (based on agronomic suitability) | Okay to sow but risk is medium | Okay to sow | Okay to sow |
| Blackspot risk | Medium | Low | Low |
Yeelanna
Last date used for prediction: 2 July 2018
Rainfall to date: 133.4mm
Days with significant stubble moisture: 57
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 2 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
Yorketown
Last date used for prediction: 2 July 2018
Rainfall to date: 88.2mm
Days with significant stubble moisture: 56
| Weekly forecast | 2 July | 9 July | 16 July |
|---|---|---|---|
| Blackspot severity | 2 | 2 | 1 |
| Sowing guide (based on agronomic suitability) | Okay to sow | Okay to sow | Okay to sow |
| Blackspot risk | Low | Low | Low |
More information
For more information contact Dr Jenny Davidson at SARDI on +61 (0)8 8303 9389.
