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.
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 |
Cootamundra
Rainfall to date: 297.1 mm. Days with significant stubble moisture: 73
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Marginally too early to sow - 20th May to 26th May | OK to sow | OK to sow |
| Blackspot risk | Low | Low | Low |
Forbes
Rainfall to date: 395.4 mm. Days with significant stubble moisture: 67
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | OK to sow | OK to sow | OK to sow |
| Blackspot risk | Low | Low | Low |
Griffith
Rainfall to date: 258.6 mm. Days with significant stubble moisture: 57
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot severity | 2 | 2 | 1 |
| Sowing guide (based on agronomic suitability) | OK to sow | OK to sow | OK to sow |
| Blackspot risk | Low | Low | Low |
Temora
Rainfall to date: 300 mm. Days with significant stubble moisture: 69
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | OK to sow | OK to sow | OK to sow |
| Blackspot risk | Low | Low | Low |
Wagga Ag Institute
Rainfall to date: 232.4 mm. Days with significant stubble moisture: 65
| Forecast for crops sown on | 25 May | 1 June | 8 June |
|---|---|---|---|
| Blackspot severity | 1 | 1 | 1 |
| Sowing guide (based on agronomic suitability) | Marginally too early to sow - 20th May to 26th May | OK to sow | OK to sow |
| Blackspot risk | Low | Low | Low |
More information
For more information contact Dr Kurt Lindbeck [2] at NSW DPI on ph +61 (0)2 6938 1608.
[3]