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 1st January 2021 to 16th May 2021 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, and can be influenced by BOM locations. The locations that have changed are Hart now Blyth, Bordertown now Wolseley, Kingsford now Roseworthy, Lameroo now Parilla, Mannun now Tepko, 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
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
Rainfall to date: 54.5 mm Days with significant stubble moisture: 45
| Forecast for crops sown on | 16 May | 23 May | 30 May |
|---|---|---|---|
| Spores released | 43% | 59% | 74% |
| Blackspot risk | Medium | Medium | Low |
Blyth
Rainfall to date: 55.7 mm Days with significant stubble moisture: 36
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 23% | 38% | 55% |
| Blackspot risk | High | Medium | Medium |
Bute
Rainfall to date: 48.7 mm Days with significant stubble moisture: 31
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 13% | 27% | 43% |
| Blackspot risk | High | High | Medium |
Ceduna
Rainfall to date: 58.1 mm Days with significant stubble moisture: 34
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 19% | 34% | 50% |
| Blackspot risk | High | Medium | Medium |
Clare
Rainfall to date: 77.1 mm Days with significant stubble moisture: 51
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 57% | 72% | 83% |
| Blackspot risk | Medium | Low | Low |
Cleve
Rainfall to date: 84.4 mm Days with significant stubble moisture: 47
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 48% | 64% | 77% |
| Blackspot risk | Medium | Low | Low |
Crystal Brook
Rainfall to date: 40.5 mm Days with significant stubble moisture: 20
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 2% | 7% | 19% |
| Blackspot risk | High | High | High |
Eudunda
Rainfall to date: 58.8 mm Days with significant stubble moisture: 41
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 34% | 50% | 66% |
| Blackspot risk | Medium | Medium | Low |
Farrell Flat
Rainfall to date: 39.4 mm Days with significant stubble moisture: 28
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 9% | 21% | 36% |
| Blackspot risk | High | High | Medium |
Kapunda
Rainfall to date: 66.9 mm Days with significant stubble moisture: 53
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 62% | 75% | 86% |
| Blackspot risk | Low | Low | Low |
Keith
Rainfall to date: 86.9 mm Days with significant stubble moisture: 45
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 43% | 59% | 74% |
| Blackspot risk | Medium | Medium | Low |
Kimba
Rainfall to date: 58.4 mm Days with significant stubble moisture: 29
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 10% | 23% | 38% |
| Blackspot risk | High | High | Medium |
Kyancutta
Rainfall to date: 49.5 mm Days with significant stubble moisture: 37
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 25% | 41% | 57% |
| Blackspot risk | High | Medium | Medium |
Lock
Rainfall to date: 60.2 mm Days with significant stubble moisture: 40
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 31% | 48% | 64% |
| Blackspot risk | Medium | Medium | Low |
Maitland
Rainfall to date: 98.3 mm Days with significant stubble moisture: 47
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 48% | 64% | 77% |
| Blackspot risk | Medium | Low | Low |
Minlaton
Rainfall to date: 83.1 mm Days with significant stubble moisture: 48
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 50% | 66% | 79% |
| Blackspot risk | Medium | Low | Low |
Minnipa Pirsa
Rainfall to date: 54.2 mm Days with significant stubble moisture: 32
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 15% | 29% | 46% |
| Blackspot risk | High | High | Medium |
Mount Barker
Rainfall to date: 142.4 mm Days with significant stubble moisture: 70
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 89% | 95% | 98% |
| Blackspot risk | Low | Low | Low |
Murray Bridge
Rainfall to date: 69.5 mm Days with significant stubble moisture: 46
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 46% | 62% | 75% |
| Blackspot risk | Medium | Low | Low |
Naracoorte
Rainfall to date: 84.3 mm Days with significant stubble moisture: 38
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 27% | 43% | 59% |
| Blackspot risk | High | Medium | Medium |
Nuriootpa
Rainfall to date: 65.4 mm Days with significant stubble moisture: 50
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 55% | 70% | 82% |
| Blackspot risk | Medium | Low | Low |
Palmer
Rainfall to date: 73.4 mm Days with significant stubble moisture: 42
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 36% | 53% | 68% |
| Blackspot risk | Medium | Medium | Low |
Parilla
Rainfall to date: 42.4 mm Days with significant stubble moisture: 35
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 21% | 36% | 53% |
| Blackspot risk | High | Medium | Medium |
Port Broughton
Rainfall to date: 54.6 mm Days with significant stubble moisture: 43
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 38% | 55% | 70% |
| Blackspot risk | Medium | Medium | Low |
Riverton
Rainfall to date: 69 mm Days with significant stubble moisture: 53
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 62% | 75% | 86% |
| Blackspot risk | Low | Low | Low |
Roseworthy
Rainfall to date: 66.4 mm Days with significant stubble moisture: 49
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 53% | 68% | 80% |
| Blackspot risk | Medium | Low | Low |
Sedan
Rainfall to date: 41.3 mm Days with significant stubble moisture: 32
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 15% | 29% | 46% |
| Blackspot risk | High | High | Medium |
Snowtown
Rainfall to date: 48.6 mm Days with significant stubble moisture: 36
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 23% | 38% | 55% |
| Blackspot risk | High | Medium | Medium |
Strathalbyn
Rainfall to date: 126.6 mm Days with significant stubble moisture: 66
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 85% | 92% | 97% |
| Blackspot risk | Low | Low | Low |
Tepko
Rainfall to date: 70.6 mm Days with significant stubble moisture: 38
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 27% | 43% | 59% |
| Blackspot risk | High | Medium | Medium |
Tumby Bay
Rainfall to date: 52.5 mm Days with significant stubble moisture: 35
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 21% | 36% | 53% |
| Blackspot risk | High | Medium | Medium |
Wolseley
Rainfall to date: 73 mm Days with significant stubble moisture: 38
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 27% | 43% | 59% |
| Blackspot risk | High | Medium | Medium |
Yeelanna
Rainfall to date: 80.7 mm Days with significant stubble moisture: 39
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 29% | 46% | 62% |
| Blackspot risk | High | Medium | Low |
Yorketown
Rainfall to date: 65.8 mm Days with significant stubble moisture: 37
| Forecast for crops sown on | 16 May | 23 May | 30 May |
| Spores released | 25% | 41% | 57% |
| Blackspot risk | High | Medium | Medium |
More Information
For more information contact Dr Jenny Davidson [2] at SARDI on ph +61 (0)8 8303 9389.
[3]
[4]