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.
This prediction is based on DPIRD's Blackspot Manager model using weather data from 1st January 2023 to 18th June 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 DPIRD and BOM weather stations whenever possible. In some locations, a suitable weather station may not be available and so we may use interpolated weather data, which uses data from surrounding stations to create reasonable values for missing weather data.
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 |
[2]Bencubbin
Last date used for prediction: 18 June 2023
Rainfall to date: 118.3 mm Days with significant stubble moisture: 39
| 19 Jun | 26 Jun | 3 Jul |
| 29% spores released - blackspot risk high | 43% spores released - blackspot risk medium | 59% spores released - blackspot risk medium |
| Sow | Sow | Getting too late to sow |
Cunderdin
Last date used for prediction: 18 June 2023
Rainfall to date: 171.2 mm Days with significant stubble moisture: 53
| 19 Jun | 26 Jun | 3 Jul |
| 62% spores released - blackspot risk low | 74% spores released - blackspot risk low | 85% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Dalwallinu
Last date used for prediction: 18 June 2023
Rainfall to date: 101.6 mm Days with significant stubble moisture: 48
| 19 Jun | 26 Jun | 3 Jul |
| 53% spores released - blackspot risk medium | 68% spores released - blackspot risk low | 80% spores released - blackspot risk low |
| Sow - getting too late to sow | Too late to sow | Too late to sow |
Darkan
Last date used for prediction: 18 June 2023
Rainfall to date: 154.3 mm Days with significant stubble moisture: 69
| 19 Jun | 26 Jun | 3 Jul |
| 89% spores released - blackspot risk low | 95% spores released - blackspot risk low | 98% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Dinninup (Boyup Brook)
Last date used for prediction: 18 June 2023
Rainfall to date: 189.2 mm Days with significant stubble moisture: 65
| 19 Jun | 26 Jun | 3 Jul |
| 85% spores released - blackspot risk low | 92% spores released - blackspot risk low | 97% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Ejanding (Dowerin)
Last date used for prediction: 18 June 2023
Rainfall to date: 136.6 mm Days with significant stubble moisture: 46
| 19 Jun | 26 Jun | 3 Jul |
| 46% spores released - blackspot risk medium | 59% spores released - blackspot risk medium | 74% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Gairdner
Last date used for prediction: 18 June 2023
Rainfall to date: 150.4 mm Days with significant stubble moisture: 48
| 19 Jun | 26 Jun | 3 Jul |
| 50% spores released - blackspot risk medium | 64% spores released - blackspot risk low | 77% spores released - blackspot risk low |
| Do not sow | Sow - do not sow dry | Sow - do not sow dry |
Grass Patch
Last date used for prediction: 18 June 2023
Rainfall to date: 93.4 mm Days with significant stubble moisture: 46
| 19 Jun | 26 Jun | 3 Jul |
| 48% spores released - blackspot risk medium | 64% spores released - blackspot risk low | 77% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Jacup
Last date used for prediction: 18 June 2023
Rainfall to date: 185.8 mm Days with significant stubble moisture: 46
| 19 Jun | 26 Jun | 3 Jul |
| 46% spores released - blackspot risk medium | 59% spores released - blackspot risk medium | 74% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Katanning
Last date used for prediction: 18 June 2023
Rainfall to date: 134 mm Days with significant stubble moisture: 72
| 19 Jun | 26 Jun | 3 Jul |
| 92% spores released - blackspot risk low | 97% spores released - blackspot risk low | 99% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Kojonup
Last date used for prediction: 18 June 2023
Rainfall to date: 139.2 mm Days with significant stubble moisture: 48
| 19 Jun | 26 Jun | 3 Jul |
| 53% spores released - blackspot risk medium | 68% spores released - blackspot risk low | 80% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Kondinin
Last date used for prediction: 18 June 2023
Rainfall to date: 186.4 mm Days with significant stubble moisture: 54
| 19 Jun | 26 Jun | 3 Jul |
| 64% spores released - blackspot risk low | 75% spores released - blackspot risk low | 86% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Kulin
Last date used for prediction: 18 June 2023
Rainfall to date: 178.1 mm Days with significant stubble moisture: 45
| 19 Jun | 26 Jun | 3 Jul |
| 43% spores released - blackspot risk medium | 57% spores released - blackspot risk medium | 72% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Lake King
Last date used for prediction: 18 June 2023
Rainfall to date: 158.4 mm Days with significant stubble moisture: 31
| 19 Jun | 26 Jun | 3 Jul |
| 13% spores released - blackspot risk high | 25% spores released - blackspot risk high | 41% spores released - blackspot risk medium |
| Sow | Sow | Getting too late to sow |
Merredin
Last date used for prediction: 18 June 2023
Rainfall to date: 116.5 mm Days with significant stubble moisture: 44
| 19 Jun | 26 Jun | 3 Jul |
| 41% spores released - blackspot risk medium | 55% spores released - blackspot risk medium | 70% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Mingenew
Last date used for prediction: 18 June 2023
Rainfall to date: 98 mm Days with significant stubble moisture: 36
| 19 Jun | 26 Jun | 3 Jul |
| 25% spores released - blackspot risk high | 41% spores released - blackspot risk medium | 57% spores released - blackspot risk medium |
| Sow | Sow | Getting too late to sow |
Moora North West
Last date used for prediction: 18 June 2023
Rainfall to date: 111.2 mm Days with significant stubble moisture: 55
| 19 Jun | 26 Jun | 3 Jul |
| 68% spores released - blackspot risk low | 80% spores released - blackspot risk low | 89% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Mount Burdett
Last date used for prediction: 18 June 2023
Rainfall to date: 136.8 mm Days with significant stubble moisture: 71
| 19 Jun | 26 Jun | 3 Jul |
| 91% spores released - blackspot risk low | 96% spores released - blackspot risk low | 98% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Mount Howick
Last date used for prediction: 18 June 2023
Rainfall to date: 191.6 mm Days with significant stubble moisture: 85
| 19 Jun | 26 Jun | 3 Jul |
| 99% spores released - blackspot risk low | 100% spores released - blackspot risk low | 100% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Mount Madden East
Last date used for prediction: 18 June 2023
Rainfall to date: 114.6 mm Days with significant stubble moisture: 33
| 19 Jun | 26 Jun | 3 Jul |
| 17% spores released - blackspot risk high | 29% spores released - blackspot risk high | 46% spores released - blackspot risk medium |
| Sow | Sow | Getting too late to sow |
Mt Barker WA
Last date used for prediction: 18 June 2023
Rainfall to date: 273.2 mm Days with significant stubble moisture: 93
| 19 Jun | 26 Jun | 3 Jul |
| 100% spores released - blackspot risk low | 100% spores released - blackspot risk low | 100% spores released - blackspot risk low |
| Sow - do not sow dry | Sow - do not sow dry | Sow - do not sow dry |
Mullewa
Last date used for prediction: 18 June 2023
Rainfall to date: 125.2 mm Days with significant stubble moisture: 52
| 19 Jun | 26 Jun | 3 Jul |
| 59% spores released - blackspot risk medium | 72% spores released - blackspot risk low | 83% spores released - blackspot risk low |
| Sow – getting too late to sow | Too late to sow | Too late to sow |
Narrogin
Last date used for prediction: 18 June 2023
Rainfall to date: 196.2 mm Days with significant stubble moisture: 64
| 19 Jun | 26 Jun | 3 Jul |
| 83% spores released - blackspot risk low | 91% spores released - blackspot risk low | 96% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Newdegate
Last date used for prediction: 18 June 2023
Rainfall to date: 145.4 mm Days with significant stubble moisture: 47
| 19 Jun | 26 Jun | 3 Jul |
| 48% spores released - blackspot risk medium | 62% spores released - blackspot risk low | 75% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Northam
Last date used for prediction: 18 June 2023
Rainfall to date: 170 mm Days with significant stubble moisture: 60
| 19 Jun | 26 Jun | 3 Jul |
| 77% spores released - blackspot risk low | 87% spores released - blackspot risk low | 94% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Pingaring
Last date used for prediction: 18 June 2023
Rainfall to date: 244 mm Days with significant stubble moisture: 54
| 19 Jun | 26 Jun | 3 Jul |
| 66% spores released - blackspot risk low | 79% spores released - blackspot risk low | 88% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Pingrup
Last date used for prediction: 18 June 2023
Rainfall to date: 150.6 mm Days with significant stubble moisture: 52
| 19 Jun | 26 Jun | 3 Jul |
| 59% spores released - blackspot risk medium | 72% spores released - blackspot risk low | 83% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Ravensthorpe
Last date used for prediction: 18 June 2023
Rainfall to date: 177.2 mm Days with significant stubble moisture: 57
| 19 Jun | 26 Jun | 3 Jul |
| 72% spores released - blackspot risk low | 83% spores released - blackspot risk low | 91% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Ridley North
Last date used for prediction: 18 June 2023
Rainfall to date: 93 mm Days with significant stubble moisture: 57
| 19 Jun | 26 Jun | 3 Jul |
| 70% spores released - blackspot risk low | 80% spores released - blackspot risk low | 89% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Salmon Gums
Last date used for prediction: 18 June 2023
Rainfall to date: 110.6 mm Days with significant stubble moisture: 63
| 19 Jun | 26 Jun | 3 Jul |
| 80% spores released - blackspot risk low | 88% spores released - blackspot risk low | 94% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Scaddan
Last date used for prediction: 18 June 2023
Rainfall to date: 93.2 mm Days with significant stubble moisture: 39
| 19 Jun | 26 Jun | 3 Jul |
| 31% spores released - blackspot risk medium | 46% spores released - blackspot risk medium | 62% spores released - blackspot risk low |
| Do not sow | Sow | Getting too late to sow |
Tammin
Last date used for prediction: 18 June 2023
Rainfall to date: 171.8 mm Days with significant stubble moisture: 52
| 19 Jun | 26 Jun | 3 Jul |
| 62% spores released - blackspot risk low | 75% spores released - blackspot risk low | 86% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |
Wattening (Bolgart & Toodyay)
Last date used for prediction: 18 June 2023
Rainfall to date: 157.7 mm Days with significant stubble moisture: 55
| 19 Jun | 26 Jun | 3 Jul |
| 68% spores released - blackspot risk low | 80% spores released - blackspot risk low | 89% spores released - blackspot risk low |
| Sow | Sow | Getting too late to sow |