Field Pea Blackspot Management Guide is a location and season specific weekly forecast. It accounts for risks of spore showers, disease severity, and disease related yield loss suggesting a window of sowing dates that minimise risk of blackspot disease.
This prediction is based on DPIRD's Blackspot Manager model using weather data from 1 January 2023 to 23 April 2023 from the nearest weather station.
You may notice weather station changes for some locations. This is to ensure that the weather data being used is the most accurate available for the area, and uses open BOM weather stations.
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. For more information on blackspot in South Australia contact Sara Blake at SARDI on (08) 8429 2248 or email sara.blake@sa.gov.au [1]
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 [2].
Key to blackspot severity scores
The aim is to delay sowing of field pea crops, where agronomically possible, until the majority of blackspot spores (approximately 60%) have been released prior to the crop emergence. This strategy reduces yield losses from blackspot.
| Blackspot risk | Spores released (%) | Yield loss for different levels of blackspot risk scenarios (%) |
|---|---|---|
| Low | 60 – 100 | 2 - 15 |
| Medium | 30 - 59 | 20 - 35 |
| High | 0 - 29 | 25 - 50 |
Balaklava
Last date used for prediction: 23 April 2023
Rainfall to date: 60.5 mm Days with significant stubble moisture: 40
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 31% | 46% | 62% |
| Blackspot risk | Medium | Medium | Low |
Blyth
Last date used for prediction: 23 April 2023
Rainfall to date: 84.1 mm Days with significant stubble moisture: 45
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 46% | 62% | 75% |
| Blackspot risk | Medium | Low | Low |
Bute
Last date used for prediction: 23 April 2023
Rainfall to date: 75 mm Days with significant stubble moisture: 38
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 27% | 41% | 57% |
| Blackspot risk | High | Medium | Medium |
Ceduna
Last date used for prediction: 23 April 2023
Rainfall to date: 67.6 mm Days with significant stubble moisture: 30
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 12% | 23% | 38% |
| Blackspot risk | High | High | Medium |
Clare
Last date used for prediction: 23 April 2023
Rainfall to date: 92.9 mm Days with significant stubble moisture: 39
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 31% | 48% | 64% |
| Blackspot risk | Medium | Medium | Low |
Cleve
Last date used for prediction: 23 April 2023
Rainfall to date: 66.6 mm Days with significant stubble moisture: 44
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 41% | 55% | 70% |
| Blackspot risk | Medium | Medium | Low |
Crystal Brook
Last date used for prediction: 23 April 2023
Rainfall to date: 54.7 mm Days with significant stubble moisture: 26
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 6% | 15% | 29% |
| Blackspot risk | High | High | High |
Eudunda
Last date used for prediction: 23 April 2023
Rainfall to date: 66.3 mm Days with significant stubble moisture: 60
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 75% | 85% | 92% |
| Blackspot risk | Low | Low | Low |
Farrell Flat
Last date used for prediction: 23 April 2023
Rainfall to date: 64.7 mm Days with significant stubble moisture: 34
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 21% | 36% | 53% |
| Blackspot risk | High | Medium | Medium |
Kapunda
Last date used for prediction: 23 April 2023
Rainfall to date: 70.6 mm Days with significant stubble moisture: 60
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 75% | 85% | 92% |
| Blackspot risk | Low | Low | Low |
Keith
Last date used for prediction: 23 April 2023
Rainfall to date: 99.2 mm Days with significant stubble moisture: 53
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 62% | 74% | 85% |
| Blackspot risk | Low | Low | Low |
Kimba
Last date used for prediction: 23 April 2023
Rainfall to date: 75.5 mm Days with significant stubble moisture: 38
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 27% | 41% | 57% |
| Blackspot risk | High | Medium | Medium |
Kyancutta
Last date used for prediction: 23 April 2023
Rainfall to date: 59.1 mm Days with significant stubble moisture: 24
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 4% | 12% | 25% |
| Blackspot risk | High | High | High |
Lock
Last date used for prediction: 23 April 2023
Rainfall to date: 55.5 mm Days with significant stubble moisture: 30
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 12% | 23% | 38% |
| Blackspot risk | High | High | Medium |
Maitland
Last date used for prediction: 23 April 2023
Rainfall to date: 101.1 mm Days with significant stubble moisture: 46
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 46% | 59% | 74% |
| Blackspot risk | Medium | Medium | Low |
Minlaton
Last date used for prediction: 23 April 2023
Rainfall to date: 68.2 mm Days with significant stubble moisture: 40
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 31% | 46% | 62% |
| Blackspot risk | Medium | Medium | Low |
Minnipa PIRSA
Last date used for prediction: 23 April 2023
Rainfall to date: 62.7 mm Days with significant stubble moisture: 24
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 4% | 12% | 25% |
| Blackspot risk | High | High | High |
Mount Barker SA
Last date used for prediction: 23 April 2023
Rainfall to date: 107.4 mm Days with significant stubble moisture: 59
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 74% | 83% | 91% |
| Blackspot risk | Low | Low | Low |
Murray Bridge
Last date used for prediction: 23 April 2023
Rainfall to date: 80.1 mm Days with significant stubble moisture: 45
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 43% | 57% | 72% |
| Blackspot risk | Medium | Medium | Low |
Naracoorte
Last date used for prediction: 23 April 2023
Rainfall to date: 95.3 mm Days with significant stubble moisture: 48
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 50% | 64% | 77% |
| Blackspot risk | Medium | Low | Low |
Nuriootpa
Last date used for prediction: 23 April 2023
Rainfall to date: 71.2 mm Days with significant stubble moisture: 47
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 48% | 62% | 75% |
| Blackspot risk | Medium | Low | Low |
Palmer
Last date used for prediction: 23 April 2023
Rainfall to date: 55.6 mm Days with significant stubble moisture: 36
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 23% | 36% | 53% |
| Blackspot risk | High | Medium | Medium |
Parilla
Last date used for prediction: 23 April 2023
Rainfall to date: 72.8 mm Days with significant stubble moisture: 52
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 59% | 72% | 83% |
| Blackspot risk | Medium | Low | Low |
Port Broughton
Last date used for prediction: 23 April 2023
Rainfall to date: 52.9 mm Days with significant stubble moisture: 32
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 15% | 27% | 43% |
| Blackspot risk | High | High | Medium |
Riverton
Last date used for prediction: 23 April 2023
Rainfall to date: 80.2 mm Days with significant stubble moisture: 60
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 75% | 85% | 92% |
| Blackspot risk | Low | Low | Low |
Roseworthy
Last date used for prediction: 23 April 2023
Rainfall to date: 30.6 mm Days with significant stubble moisture: 15
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 0% | 2% | 9% |
| Blackspot risk | High | High | High |
Sedan
Last date used for prediction: 23 April 2023
Rainfall to date: 45.7 mm Days with significant stubble moisture: 45
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 43% | 57% | 72% |
| Blackspot risk | Medium | Medium | Low |
Snowtown
Last date used for prediction: 23 April 2023
Rainfall to date: 53.8 mm Days with significant stubble moisture: 32
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 15% | 27% | 43% |
| Blackspot risk | High | High | Medium |
Strathalbyn
Last date used for prediction: 23 April 2023
Rainfall to date: 79 mm Days with significant stubble moisture: 58
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 72% | 82% | 90% |
| Blackspot risk | Low | Low | Low |
Tepko
Last date used for prediction: 23 April 2023
Rainfall to date: 52.9 mm Days with significant stubble moisture: 36
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 23% | 36% | 53% |
| Blackspot risk | High | Medium | Medium |
Tumby Bay
Last date used for prediction: 23 April 2023
Rainfall to date: 55.3 mm Days with significant stubble moisture: 37
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 25% | 38% | 55% |
| Blackspot risk | High | Medium | Medium |
Wolseley
Last date used for prediction: 23 April 2023
Rainfall to date: 95.7 mm Days with significant stubble moisture: 60
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 75% | 85% | 92% |
| Blackspot risk | Low | Low | Low |
Yeelanna
Last date used for prediction: 23 April 2023
Rainfall to date: 59.8 mm Days with significant stubble moisture: 41
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 34% | 48% | 64% |
| Blackspot risk | Medium | Medium | Low |
Yorketown
Last date used for prediction: 23 April 2023
Rainfall to date: 55.1 mm Days with significant stubble moisture: 32
| Forecast for crops sown on | 24 Apr | 1 May | 8 May |
| Spores released | 15% | 27% | 43% |
| Blackspot risk | High | High | Medium |
More information
For more information contact Ms Sara Blake [3] at SARDI on ph: +61 8 8429 2248.