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 2019 to 5 May 2019 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
Rainfall to date: 29.4mm Days with significant stubble moisture: 12
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | OK to sow, but disease risk is high |
| Blackspot risk | High | High | High |
Blyth (Hart)
Rainfall to date: 34.4mm Days with significant stubble moisture: 12
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | OK to sow, but disease risk is high |
| Blackspot risk | High | High | High |
Bordertown
Rainfall to date: 22.1mm Days with significant stubble moisture: 16
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Too early to sow | Too early to sow | Marginally early to sow |
| Blackspot risk | High | High | High |
Bute
Rainfall to date: 30.8mm Days with significant stubble moisture: 5
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | OK to sow, but disease risk is high | OK to sow, but disease risk is high | OK to sow, but disease risk is high |
| Blackspot risk | High | High | High |
Ceduna
Rainfall to date: 34.4mm Days with significant stubble moisture: 12
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | OK to sow, but disease risk is high | OK to sow, but disease risk is high | OK to sow, but disease risk is high |
| Blackspot risk | High | High | High |
Clare
Rainfall to date: 36mm Days with significant stubble moisture: 15
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Too early to sow | Too early to sow | Too early to sow |
| Blackspot risk | High | High | High |
Crystal Brook
Rainfall to date: 32mm Days with significant stubble moisture: 19
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | OK to sow, but disease risk is high | OK to sow, but disease risk is high | OK to sow, but disease risk is high |
| Blackspot risk | High | High | High |
Eudunda
Rainfall to date: 34.8mm Days with significant stubble moisture: 16
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | OK to sow, but disease risk is high |
| Blackspot risk | High | High | High |
Farrell Flat
Rainfall to date: 28.9mm Days with significant stubble moisture: 17
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Too early to sow | Marginally early to sow | Marginally early to sow |
| Blackspot risk | High | High | High |
Keith
Rainfall to date: 29.1mm Days with significant stubble moisture: 23
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | Marginally early to sow |
| Blackspot risk | High | High | High |
Kimba
Rainfall to date: 31mm Days with significant stubble moisture: 6
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | Marginally early to sow |
| Blackspot risk | High | High | High |
Kingsford
Rainfall to date: 26.1mm Days with significant stubble moisture: 12
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | OK to sow, but disease risk is high |
| Blackspot risk | High | High | High |
Kyancutta
Rainfall to date: 29.7mm Days with significant stubble moisture: 12
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | Marginally early to sow |
| Blackspot risk | High | High | High |
Lameroo
Rainfall to date: 16.1mm Days with significant stubble moisture: 7
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | Marginally early to sow |
| Blackspot risk | High | High | High |
Lock
Rainfall to date: 16.3mm Days with significant stubble moisture: 9
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | Marginally early to sow |
| Blackspot risk | High | High | High |
Maitland
Rainfall to date: 38.5mm Days with significant stubble moisture: 10
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Too early to sow | Too early to sow | Marginally early to sow |
| Blackspot risk | High | High | High |
Mannum
Rainfall to date: 14.7mm Days with significant stubble moisture: 11
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Too early to sow | Marginally early to sow | Marginally early to sow |
| Blackspot risk | High | High | High |
Minlaton
Rainfall to date: 24.7mm Days with significant stubble moisture: 6
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Too early to sow | Marginally early to sow | OK to sow, but disease risk is high |
| Blackspot risk | High | High | High |
Minnipa
Rainfall to date: 44.5mm Days with significant stubble moisture: 17
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | OK to sow | OK to sow, but disease risk is high | OK to sow, but disease risk is high |
| Blackspot risk | High | High | High |
Mount Barker SA
Rainfall to date: 45.9mm Days with significant stubble moisture: 20
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Too early to sow | Too early to sow | Too early to sow |
| Blackspot risk | High | High | High |
Murray Bridge
Rainfall to date: 15.4mm Days with significant stubble moisture: 9
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | Marginally early to sow |
| Blackspot risk | High | High | High |
Murray Bridge (Mypolonga)
Rainfall to date: 15.4mm Days with significant stubble moisture: 9
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | Marginally early to sow |
| Blackspot risk | High | High | High |
Naracoorte
Rainfall to date: 33mm Days with significant stubble moisture: 23
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Too early to sow | Too early to sow | Too early to sow |
| Blackspot risk | High | High | High |
Nuriootpa
Rainfall to date: 26.2mm Days with significant stubble moisture: 13
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | OK to sow, but disease risk is high |
| Blackspot risk | High | High | High |
Palmer
Rainfall to date: 15.3mm Days with significant stubble moisture: 9
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | Marginally early to sow |
| Blackspot risk | High | High | High |
Port Broughton
Rainfall to date: 32mm Days with significant stubble moisture: 12
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | OK to sow, but disease risk is high | OK to sow, but disease risk is high | OK to sow, but disease risk is high |
| Blackspot risk | High | High | High |
Riverton
Rainfall to date: 37.6mm Days with significant stubble moisture: 20
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Too early to sow | Too early to sow | Marginally early to sow |
| Blackspot risk | High | High | High |
Sedan
Rainfall to date: 12.9mm Days with significant stubble moisture: 11
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | Marginally early to sow |
| Blackspot risk | High | High | High |
Snowtown
Rainfall to date: 28mm Days with significant stubble moisture: 12
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | OK to sow, but disease risk is high |
| Blackspot risk | High | High | High |
Strathalbyn
Rainfall to date: 29.7mm Days with significant stubble moisture: 21
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | OK to sow, but disease risk is high | OK to sow, but disease risk is high |
| Blackspot risk | High | High | High |
Tumby Bay
Rainfall to date: 27.4mm Days with significant stubble moisture: 12
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | OK to sow, but disease risk is high |
| Blackspot risk | High | High | High |
Yeelanna
Rainfall to date: 55.8mm Days with significant stubble moisture: 12
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Marginally early to sow | Marginally early to sow | OK to sow, but disease risk is high |
| Blackspot risk | High | High | High |
Yorketown
Rainfall to date: 38.5mm Days with significant stubble moisture: 13
| Weekly forecast | 5 May | 12 May | 19 May |
| Blackspot severity | 5 | 5 | 5 |
| Sowing guide (based on agronomic suitability) | Too early to sow | Marginally early to sow | OK to sow, but disease risk is high |
| Blackspot risk | High | High | High |
More Information
For more information contact Dr Jenny Davidson [1] at SARDI on ph +61 (0)8 8303 9389.
[2]
[3]