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 28 April 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 |
Ballarat
Rainfall to date: 45.2mm Days with significant stubble moisture: 33
| Forecast for crops sown on | 28 Apr | 5 May | 12 May |
|---|---|---|---|
| Blackspot severity | 5 | 5 | 3 to 4 |
| 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 medium |
| Blackspot risk | High | High | Medium |
Bendigo
Rainfall to date: 27.4mm Days with significant stubble moisture: 19
| Forecast for crops sown on | 28 Apr | 5 May | 12 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 |
Beulah West (Hopetoun)
Rainfall to date: 19.7mm Days with significant stubble moisture: 8
| Forecast for crops sown on | 28 Apr | 5 May | 12 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 |
Charlton
Rainfall to date: 36.2mm Days with significant stubble moisture: 21
| Forecast for crops sown on | 28 Apr | 5 May | 12 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 |
Cressy
Rainfall to date: 57.9mm Days with significant stubble moisture: 27
| Forecast for crops sown on | 28 Apr | 5 May | 12 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 |
Edenhope
Rainfall to date: 34.9mm Days with significant stubble moisture: 29
| Forecast for crops sown on | 28 Apr | 5 May | 12 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 |
Horsham
Rainfall to date: 20mm Days with significant stubble moisture: 7
| Forecast for crops sown on | 28 Apr | 5 May | 12 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 |
Molyullah (Benalla)
Rainfall to date: 70.9mm Days with significant stubble moisture: 47
| Forecast for crops sown on | 28 Apr | 5 May | 12 May |
|---|---|---|---|
| Blackspot severity | 3 to 4 | 3 to 4 | 2 |
| Sowing guide (based on agronomic suitability) | OK to sow but disease risk is medium | OK to sow but disease risk is medium | OK to sow |
| Blackspot risk | Medium | Medium | Low |
Nhill
Rainfall to date: 22mm Days with significant stubble moisture: 14
| Forecast for crops sown on | 28 Apr | 5 May | 12 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 |
Swan Hill Aerodrome
Rainfall to date: 16mm Days with significant stubble moisture: 7
| Forecast for crops sown on | 28 Apr | 5 May | 12 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 |
Warranooke (Marnoo)
Rainfall to date: 47.7mm Days with significant stubble moisture: 13
| Forecast for crops sown on | 28 Apr | 5 May | 12 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 |
Wycheproof
Rainfall to date: 21.5mm Days with significant stubble moisture: 14
| Forecast for crops sown on | 28 Apr | 5 May | 12 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 |
Yatchaw (Hamilton)
Rainfall to date: 58.2mm Days with significant stubble moisture: 41
| Forecast for crops sown on | 28 Apr | 5 May | 12 May |
|---|---|---|---|
| Blackspot severity | 3 to 4 | 3 to 4 | 2 |
| Sowing guide (based on agronomic suitability) | OK to sow but disease risk is medium | OK to sow but disease risk is medium | OK to sow |
| Blackspot risk | Medium | Medium | Low |
More Information
For more information contact Dr Joshua Fanning [1] at Agriculture Victoria Research on ph +61 (0)3 4344 3335.
[2]