This prediction is based on DPIRD’s Blackspot Manager model using weather data from 1 January 2020 to 11 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.
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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 |
Bencubbin
Rainfall to date: 99.5 mm. Days with significant stubble moisture: 44
| 11 May | 18 May | 25 May |
|---|---|---|
| 41% spore released - blackspot risk medium | 50% spore released - blackspot risk medium | 66% spore released - blackspot risk low |
| Do not sow | Do not sow | Do not sow |
Boyup Brook
Rainfall to date: 96.3 mm. Days with significant stubble moisture: 36
| 11 May | 18 May | 25 May |
|---|---|---|
| 23% spore released - blackspot risk high | 36% spore released - blackspot risk medium | 53% spore released - blackspot risk medium |
| Do not sow | Do not sow | Do not sow |
Cunderdin
Rainfall to date: 105 mm. Days with significant stubble moisture: 22
| 11 May | 18 May | 25 May |
|---|---|---|
| 3% spore released - blackspot risk high | 5% spore released - blackspot risk high | 15% spore released - blackspot risk high |
| Do not sow | Do not sow | Do not sow |
Dalwallinu
Rainfall to date: 107 mm. Days with significant stubble moisture: 29
| 11 May | 18 May | 25 May |
|---|---|---|
| 10% spore released - blackspot risk high | 17% spore released - blackspot risk high | 31% spore released - blackspot risk medium |
| Do not sow | Do not sow | Do not sow |
Dowerin
Rainfall to date: 136.7 mm. Days with significant stubble moisture: 30
| 11 May | 18 May | 25 May |
|---|---|---|
| 12% spore released - blackspot risk high | 17% spore released - blackspot risk high | 31% spore released - blackspot risk medium |
| Do not sow | Do not sow | Do not sow |
Gairdner
Rainfall to date: 74.5 mm. Days with significant stubble moisture: 45
| 11 May | 18 May | 25 May |
|---|---|---|
| 43% spore released - blackspot risk medium | 53% spore released - blackspot risk medium | 68% spore released - blackspot risk low |
| Do not sow – not suited agronomically | Do not sow | Sow – do not sow dry |
Grass Patch
Rainfall to date: 93.4 mm. Days with significant stubble moisture: 58
| 11 May | 18 May | 25 May |
|---|---|---|
| 72% spore released - blackspot risk low | 79% spore released - blackspot risk low | 88% spore released - blackspot risk low |
| Sow – do not sow dry | Sow – do not sow dry | Sow – do not sow dry |
Hillman
Rainfall to date: 91.3 mm. Days with significant stubble moisture: 38
| 11 May | 18 May | 25 May |
|---|---|---|
| 27% spore released - blackspot risk high | 36% spore released - blackspot risk medium | 53% spore released - blackspot risk medium |
| Do not sow | Do not sow | Do not sow |
Jacup
Rainfall to date: 125.5 mm. Days with significant stubble moisture: 50
| 11 May | 18 May | 25 May |
|---|---|---|
| 55% spore released - blackspot risk medium | 68% spore released - blackspot risk low | 80% spore released - blackspot risk low |
| Sow – do not sow dry | Sow – do not sow dry | Sow – do not sow dry |
Katanning
Rainfall to date: 85 mm. Days with significant stubble moisture: 30
| 11 May | 18 May | 25 May |
|---|---|---|
| 12% spore released - blackspot risk high | 19% spore released - blackspot risk high | 34% spore released - blackspot risk medium |
| Do not sow | Do not sow | Do not sow |
Kojonup
Rainfall to date: 88.8 mm. Days with significant stubble moisture: 37
| 11 May | 18 May | 25 May |
|---|---|---|
| 25% spore released - blackspot risk high | 36% spore released - blackspot risk medium | 53% spore released - blackspot risk medium |
| Do not sow | Do not sow | Do not sow |
Kondinin
Rainfall to date: 88 mm. Days with significant stubble moisture: 49
| 11 May | 18 May | 25 May |
|---|---|---|
| 53% spore released - blackspot risk medium | 62% spore released - blackspot risk low | 75% spore released - blackspot risk low |
| Do not sow | Do not sow | Sow – do not sow dry |
Kulin
Rainfall to date: 110.7 mm. Days with significant stubble moisture: 46
| 11 May | 18 May | 25 May |
|---|---|---|
| 46% spore released - blackspot risk medium | 55% spore released - blackspot risk medium | 70% spore released - blackspot risk low |
| Do not sow | Do not sow | Sow – do not sow dry |
Lake King
Rainfall to date: 93.2 mm. Days with significant stubble moisture: 52
| 11 May | 18 May | 25 May |
|---|---|---|
| 59% spore released - blackspot risk medium | 68% spore released - blackspot risk low | 80% spore released - blackspot risk low |
| Sow – do not sow dry | Sow – do not sow dry | Sow – do not sow dry |
Merredin
Rainfall to date: 95.7 mm. Days with significant stubble moisture: 33
| 11 May | 18 May | 25 May |
|---|---|---|
| 17% spore released - blackspot risk high | 25% spore released - blackspot risk high | 41% spore released - blackspot risk medium |
| Do not sow | Do not sow | Do not sow |
Mingenew
Rainfall to date: 106.9 mm. Days with significant stubble moisture: 22
| 11 May | 18 May | 25 May |
|---|---|---|
| 3% spore released - blackspot risk high | 6% spore released - blackspot risk high | 17% spore released - blackspot risk high |
| Do not sow | Do not sow | Do not sow |
Moora North West
Rainfall to date: 98.5 mm. Days with significant stubble moisture: 34
| 11 May | 18 May | 25 May |
|---|---|---|
| 19% spore released - blackspot risk high | 25% spore released - blackspot risk high | 41% spore released - blackspot risk medium |
| Do not sow | Do not sow | Do not sow |
Mount Howick
Rainfall to date: 106.2 mm. Days with significant stubble moisture: 44
| 11 May | 18 May | 25 May |
|---|---|---|
| 41% spore released - blackspot risk medium | 55% spore released - blackspot risk medium | 70% spore released - blackspot risk low |
| Do not sow | Do not sow | Sow – do not sow dry |
Mt Barker WA
Rainfall to date: 135.5 mm. Days with significant stubble moisture: 80
| 11 May | 18 May | 25 May |
|---|---|---|
| 97% spore released - blackspot risk low | 99% spore released - blackspot risk low | 100% spore released - blackspot risk low |
| Do not sow – not suited agronomically | Do not sow – not suited agronomically | Sow – do not sow dry |
Mullewa
Rainfall to date: 98.6 mm. Days with significant stubble moisture: 33
| 11 May | 18 May | 25 May |
|---|---|---|
| 17% spore released - blackspot risk high | 25% spore released - blackspot risk high | 41% spore released - blackspot risk medium |
| Do not sow | Do not sow | Do not sow |
Narrogin
Rainfall to date: 93.5 mm. Days with significant stubble moisture: 40
| 11 May | 18 May | 25 May |
|---|---|---|
| 31% spore released - blackspot risk medium | 41% spore released - blackspot risk medium | 57% spore released - blackspot risk medium |
| Do not sow | Do not sow | Do not sow |
Newdegate
Rainfall to date: 73.4 mm. Days with significant stubble moisture: 42
| 11 May | 18 May | 25 May |
|---|---|---|
| 36% spore released - blackspot risk medium | 46% spore released - blackspot risk medium | 62% spore released - blackspot risk low |
| Do not sow | Do not sow | Do not sow |
Northam
Rainfall to date: 70 mm. Days with significant stubble moisture: 34
| 11 May | 18 May | 25 May |
|---|---|---|
| 19% spore released - blackspot risk high | 27% spore released - blackspot risk high | 43% spore released - blackspot risk medium |
| Do not sow | Do not sow | Do not sow |
Pingrup
Rainfall to date: 80.3 mm. Days with significant stubble moisture: 46
| 11 May | 18 May | 25 May |
|---|---|---|
| 46% spore released - blackspot risk medium | 53% spore released - blackspot risk medium | 68% spore released - blackspot risk low |
| Do not sow | Do not sow | Sow – do not sow dry |
Salmon Gums
Rainfall to date: 101.6 mm. Days with significant stubble moisture: 60
| 11 May | 18 May | 25 May |
|---|---|---|
| 75% spore released - blackspot risk low | 80% spore released - blackspot risk low | 89% spore released - blackspot risk low |
| Sow – do not sow dry | Sow – do not sow dry | Sow – do not sow dry |
Scaddan
Rainfall to date: 102 mm. Days with significant stubble moisture: 56
| 11 May | 18 May | 25 May |
|---|---|---|
| 68% spore released - blackspot risk low | 75% spore released - blackspot risk low | 86% spore released - blackspot risk low |
| Sow – do not sow dry | Sow – do not sow dry | Sow – do not sow dry |
Tammin
Rainfall to date: 77 mm. Days with significant stubble moisture: 27
| 11 May | 18 May | 25 May |
|---|---|---|
| 7% spore released - blackspot risk high | 12% spore released - blackspot risk high | 25% spore released - blackspot risk high |
| Do not sow | Do not sow | Do not sow |
Toodyay
Rainfall to date: 69.3 mm. Days with significant stubble moisture: 38
| 11 May | 18 May | 25 May |
|---|---|---|
| 27% spore released - blackspot risk high | 36% spore released - blackspot risk medium | 53% spore released - blackspot risk medium |
| Do not sow | Do not sow | Do not sow |
