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 spore 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 2020 to 25 May 2020 from the nearest weather station.
You may notice some weather station changes for some locations, this is to ensure that the weather data being used is the most accurate available for the area. The locations that have changed are Hart now Blyth, Bordertown now Wolseley, Kingsford now Nuriootpa Pirsa, Lameroo now Parrakie, Mannun and Mypolonga now Murray Bridge.
Sowing time can depend on a range of factors and it is recommended to consult an agronomist to determine the optimal sowing window for your situation.
Missing a location or would like to receive email or sms alerts?
Sign up today to get alerts and add your local weather station. Text ‘blackspot’, your name and nearest weather station to 0475 959 932 or email BlackspotManager@dpird.wa.gov.au [1].
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
Rainfall to date: 145.1 mm. Days with significant stubble moisture: 44
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Medium | Medium | Low |
Blyth
Rainfall to date: 177.7 mm. Days with significant stubble moisture: 57
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Bute
Rainfall to date: 147.7 mm. Days with significant stubble moisture: 63
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Ceduna
Rainfall to date: 84.9 mm. Days with significant stubble moisture: 36
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | High | High | Medium |
Clare
Rainfall to date: 215.9 mm. Days with significant stubble moisture: 67
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Cleve
Rainfall to date: 128.6 mm. Days with significant stubble moisture: 63
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Crystal Brook
Rainfall to date: 213.6 mm. Days with significant stubble moisture: 61
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Eudunda
Rainfall to date: 136.8 mm. Days with significant stubble moisture: 50
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Medium | Low | Low |
Farrell Flat
Rainfall to date: 156.5 mm. Days with significant stubble moisture: 56
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Kapunda
Rainfall to date: 163.4 mm. Days with significant stubble moisture: 57
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Keith
Rainfall to date: 187.7 mm. Days with significant stubble moisture: 58
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Kent Town
Rainfall to date: 216 mm. Days with significant stubble moisture: 70
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Kimba
Rainfall to date: 95 mm. Days with significant stubble moisture: 43
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Medium | Medium | Low |
Nuriootpa Pirsa
Rainfall to date: 168.6 mm. Days with significant stubble moisture: 58
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Kyancutta
Rainfall to date: 87.2 mm. Days with significant stubble moisture: 46
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Medium | Medium | Low |
Lock
Rainfall to date: 104.4 mm. Days with significant stubble moisture: 52
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Medium | Low | Low |
Maitland
Rainfall to date: 177.2 mm. Days with significant stubble moisture: 63
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Murray Bridge
Rainfall to date: 142.9 mm. Days with significant stubble moisture: 61
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Minlaton
Rainfall to date: 148.6 mm. Days with significant stubble moisture: 54
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Minnipa Pirsa
Rainfall to date: 128.7 mm. Days with significant stubble moisture: 46
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Medium | Medium | Low |
Mount Barker
Rainfall to date: 254.2 mm. Days with significant stubble moisture: 79
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Naracoorte
Rainfall to date: 140.5 mm. Days with significant stubble moisture: 62
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Nuriootpa
Rainfall to date: 168.6 mm. Days with significant stubble moisture: 58
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Palmer
Rainfall to date: 122.8 mm. Days with significant stubble moisture: 56
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Parrakie
Rainfall to date: 155.4 mm. Days with significant stubble moisture: 50
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Medium | Low | Low |
Port Broughton
Rainfall to date: 154.9 mm. Days with significant stubble moisture: 54
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Riverton
Rainfall to date: 169.6 mm. Days with significant stubble moisture: 49
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Medium | Low | Low |
Sedan
Rainfall to date: 102.8 mm. Days with significant stubble moisture: 44
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Medium | Medium | Low |
Snowtown
Rainfall to date: 126.6 mm. Days with significant stubble moisture: 61
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Strathalbyn
Rainfall to date: 183.9 mm. Days with significant stubble moisture: 77
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Tumby Bay
Rainfall to date: 76.7 mm. Days with significant stubble moisture: 47
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Medium | Medium | Low |
Wolseley
Rainfall to date: 171.9 mm. Days with significant stubble moisture: 64
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
Yeelanna
Rainfall to date: 102.9 mm. Days with significant stubble moisture: 49
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Medium | Low | Low |
Yorketown
Rainfall to date: 184.4 mm. Days with significant stubble moisture: 60
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot risk | Low | Low | Low |
More information
For more information contact Dr Jenny Davidson [2] at SARDI on ph +61 (0)8 8303 9389.
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