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 13 June 2018 from the nearest weather station.
Key to blackspot severity scores
| Blackspot risk | 5 out of 10 years | 3 out of 10 years | 1 out of 10 years |
|---|---|---|---|
| Low | 2 | 5 | 15 |
| Medium | 20 | 25 | 35 |
| High | 25 | 30 | 50 |
Balaklava
Last date used for prediction: 12 June 2018. Rainfall to date: 64.1mm
Days with significant stubble moisture: 44
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| Blackspot severity | 3-4 | 3-4 | 2 |
| Sowing guide (based on agronomic suitability) | Do not sow as risk is medium | Do not sow as risk is medium | Okay to sow |
| Blackspot risk | Medium | Medium | Low |
Blyth (Hart)
Last date used for prediction: 12 June 2018. Rainfall to date: 92mm
Days with significant stubble moisture: 64
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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: 12 June 2018. Rainfall to date: 91.5mm
Days with significant stubble moisture: 50
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| Blackspot severity | 3-4 | 2 | 1 |
| Sowing guide (based on agronomic suitability) | Do not sow as risk is medium | Okay to sow | Okay to sow |
| Blackspot risk | Medium | Low | Low |
Bute
Last date used for prediction: 12 June 2018. Rainfall to date: 101.6mm
Days with significant stubble moisture: 64
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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: 12 June 2018. Rainfall to date: 130.2mm
Days with significant stubble moisture: 76
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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: 12 June 2018. Rainfall to date: 71.4mm
Days with significant stubble moisture: 35
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| Blackspot severity | 5 | 3-4 | 3-4 |
| Sowing guide (based on agronomic suitability) | Do not sow as risk is high | Do not sow as risk is medium | Do not sow as risk is medium |
| Blackspot risk | High | Medium | Medium |
Eudunda
Last date used for prediction: 12 June 2018. Rainfall to date: 86.8mm
Days with significant stubble moisture: 61
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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 |
Farrell Flat
Last date used for prediction: 12 June 2018. Rainfall to date: 91.6mm
Days with significant stubble moisture: 59
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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 |
Keith
Last date used for prediction: 12 June 2018. Rainfall to date: 97.6mm
Days with significant stubble moisture: 43
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| Blackspot severity | 3-4 | 3-4 | 2 |
| Sowing guide (based on agronomic suitability) | Do not sow as risk is medium | Do not sow as risk is medium | Okay to sow |
| Blackspot risk | Medium | Medium | Low |
Kimba
Last date used for prediction: 12 June 2018. Rainfall to date: 71.2mm
Days with significant stubble moisture: 33
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| Blackspot severity | 5 | 3-4 | 3-4 |
| Sowing guide (based on agronomic suitability) | Do not sow as risk is high | Do not sow as risk is medium | Do not sow as risk is medium |
| Blackspot risk | High | Medium | Medium |
Kingsford
Last date used for prediction: 12 June 2018. Rainfall to date: 93.5mm
Days with significant stubble moisture: 75
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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: 12 June 2018. Rainfall to date: 56.7mm
Days with significant stubble moisture: 35
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| Blackspot severity | 5 | 3-4 | 3-4 |
| Sowing guide (based on agronomic suitability) | Do not sow as risk is high | Do not sow as risk is medium | Do not sow as risk is medium |
| Blackspot risk | High | Medium | Medium |
Lameroo
Last date used for prediction: 12 June 2018. Rainfall to date: 49.2mm
Days with significant stubble moisture: 30
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Do not sow as risk is high | Do not sow as risk is high | Do not sow as risk is high |
| Blackspot risk | High | High | High |
Lock
Last date used for prediction: 12 June 2018. Rainfall to date: 69.6mm
Days with significant stubble moisture: 45
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| Blackspot severity | 3-4 | 3-4 | 2 |
| Sowing guide (based on agronomic suitability) | Do not sow as risk is medium | Do not sow as risk is medium | Okay to sow |
| Blackspot risk | Medium | Medium | Low |
Maitland
Last date used for prediction: 12 June 2018. Rainfall to date: 101.8mm
Days with significant stubble moisture: 61
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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 |
Mannum
Last date used for prediction: 12 June 2018. Rainfall to date: 49.9mm
Days with significant stubble moisture: 35
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| Blackspot severity | 5 | 3-4 | 3-4 |
| Sowing guide (based on agronomic suitability) | Do not sow as risk is high | Do not sow as risk is medium | Do not sow as risk is medium |
| Blackspot risk | High | Medium | Medium |
Minlaton
Last date used for prediction: 12 June 2018. Rainfall to date: 87.5mm
Days with significant stubble moisture: 43
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| Blackspot severity | 3-4 | 3-4 | 2 |
| Sowing guide (based on agronomic suitability) | Do not sow as risk is medium | Do not sow as risk is medium | Okay to sow |
| Blackspot risk | Medium | Medium | Low |
Minnipa
Last date used for prediction: 12 June 2018. Rainfall to date: 41.2mm
Days with significant stubble moisture: 31
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| Blackspot severity | 5 | 5 | 3-4 |
| Sowing guide (based on agronomic suitability) | Getting too late to sow and risk is high | Getting too late to sow and risk is high | Do not sow as risk is medium |
| Blackspot risk | High | High | Medium |
Mount Barker
Last date used for prediction: 12 June 2018. Rainfall to date: 194.3mm
Days with significant stubble moisture: 87
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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: 12 June 2018. Rainfall to date: 43.2mm
Days with significant stubble moisture: 28
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| Blackspot severity | 5 | 5 | 3-4 |
| Sowing guide (based on agronomic suitability) | Do not sow as risk is high | Do not sow as risk is high | Do not sow as risk is medium |
| Blackspot risk | High | High | Medium |
Mypolonga
Last date used for prediction: 12 June 2018. Rainfall to date: 42.5mm
Days with significant stubble moisture: 29
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| Blackspot severity | 5 | 5 | 3-4 |
| Sowing guide (based on agronomic suitability) | Do not sow as risk is high | Do not sow as risk is high | Do not sow as risk is medium |
| Blackspot risk | High | High | Medium |
Naracoorte
Last date used for prediction: 12 June 2018. Rainfall to date: 112.6mm
Days with significant stubble moisture: 79
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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: 12 June 2018. Rainfall to date: 101.6mm
Days with significant stubble moisture: 65
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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: 12 June 2018. Rainfall to date: 76.5mm
Days with significant stubble moisture: 57
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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 |
Port Broughton
Last date used for prediction: 12 June 2018. Rainfall to date: 109.1mm
Days with significant stubble moisture: 60
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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 |
Riverton
Last date used for prediction: 12 June 2018. Rainfall to date: 100.8mm
Days with significant stubble moisture: 60
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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 |
Sedan
Last date used for prediction: 12 June 2018. Rainfall to date: 61.5mm
Days with significant stubble moisture: 45
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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: 12 June 2018. Rainfall to date: 104.3mm
Days with significant stubble moisture: 68
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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: 12 June 2018. Rainfall to date: 87.3mm
Days with significant stubble moisture: 61
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| Blackspot severity | 2 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Marginally late to sow | Getting late to sow | Getting late to sow |
| Blackspot risk | Low | Low | Low |
Tumby Bay
Last date used for prediction: 12 June 2018. Rainfall to date: 61.7mm
Days with significant stubble moisture: 34
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| Blackspot severity | 5 | 3-4 | 3-4 |
| Sowing guide (based on agronomic suitability) | Okay to sow but risk is high | Okay to sow but risk is medium | Okay to sow but risk is medium |
| Blackspot risk | High | Medium | Medium |
Yeelanna
Last date used for prediction: 12 June 2018. Rainfall to date: 97.7mm
Days with significant stubble moisture: 43
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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 |
Yorketown
Last date used for prediction: 12 June 2018. Rainfall to date: 69.4mm
Days with significant stubble moisture: 46
| Weekly forecast | 12 June | 19 June | 26 June |
|---|---|---|---|
| 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 |
More information
For more information contact Dr Jenny Davidson [1] at SARDI on +61 (0)8 8303 9389.
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