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.
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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: 111.7 mm. Days with significant stubble moisture: 46
| 25 May | 1 June | 8 June |
|---|---|---|
| 46% spore released - blackspot risk medium | 62% spore released - blackspot risk low | 75% spore released - blackspot risk low |
| Sow – do not sow dry | Sow – do not sow dry | Sow – do not sow dry |
Boyup Brook
Rainfall to date: 119.4 mm. Days with significant stubble moisture: 41
| 25 May | 1 June | 8 June |
|---|---|---|
| 34% spore released - blackspot risk medium | 50% spore released - blackspot risk medium | 66% spore released - blackspot risk low |
| Do not sow | Sow - do not sow dry | Sow - do not sow dry |
Cunderdin
Rainfall to date: 117.2 mm. Days with significant stubble moisture: 23
| 25 May | 1 June | 8 June |
|---|---|---|
| 3% 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 |
Dalwallinu
Rainfall to date: 124 mm. Days with significant stubble moisture: 31
| 25 May | 1 June | 8 June |
|---|---|---|
| 13% spore released - blackspot risk high | 27% spore released - blackspot risk high | 43% spore released - blackspot risk medium |
| Do not sow | Do not sow | Sow - do not sow dry |
Dowerin
Rainfall to date: 152.4 mm. Days with significant stubble moisture: 33
| 25 May | 1 June | 8 June |
|---|---|---|
| 17% spore released - blackspot risk high | 31% spore released - blackspot risk medium | 48% spore released - blackspot risk medium |
| Do not sow | Do not sow | Sow - do not sow dry |
Gairdner
Rainfall to date: 86.5 mm. Days with significant stubble moisture: 53
| 25 May | 1 June | 8 June |
|---|---|---|
| 62% 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 |
Grass Patch
Rainfall to date: 100 mm. Days with significant stubble moisture: 60
| 25 May | 1 June | 8 June |
|---|---|---|
| 75% spore released - blackspot risk low | 86% spore released - blackspot risk low | 93% spore released - blackspot risk low |
| Sow – do not sow dry | Sow – do not sow dry | Sow – do not sow dry |
Hillman
Rainfall to date: 105 mm. Days with significant stubble moisture: 39
| 25 May | 1 June | 8 June |
|---|---|---|
| 29% spore released - blackspot risk high | 46% spore released - blackspot risk medium | 62% spore released - blackspot risk low |
| Do not sow | Sow – do not sow dry | Sow – do not sow dry |
Jacup
Rainfall to date: 135.3 mm. Days with significant stubble moisture: 54
| 25 May | 1 June | 8 June |
|---|---|---|
| 64% spore released - blackspot risk low | 77% spore released - blackspot risk low | 87% spore released - blackspot risk low |
| Sow – do not sow dry | Sow – do not sow dry | Sow – do not sow dry |
Katanning
Rainfall to date: 96.2 mm. Days with significant stubble moisture: 32
| 25 May | 1 June | 8 June |
|---|---|---|
| 15% spore released - blackspot risk high | 29% spore released - blackspot risk high | 46% spore released - blackspot risk medium |
| Do not sow | Do not sow | Sow - do not sow dry |
Kojonup
Rainfall to date: 102.2 mm. Days with significant stubble moisture: 40
| 25 May | 1 June | 8 June |
|---|---|---|
| 31% spore released - blackspot risk medium | 48% spore released - blackspot risk medium | 64% spore released - blackspot risk low |
| Do not sow | Sow – do not sow dry | Sow – do not sow dry |
Kondinin
Rainfall to date: 98.7 mm. Days with significant stubble moisture: 49
| 25 May | 1 June | 8 June |
|---|---|---|
| 53% 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 |
Kulin
Rainfall to date: 122.8 mm. Days with significant stubble moisture: 48
| 25 May | 1 June | 8 June |
|---|---|---|
| 50% spore released - blackspot risk medium | 66% spore released - blackspot risk low | 79% spore released - blackspot risk low |
| Sow – do not sow dry | Sow – do not sow dry | Sow – do not sow dry |
Lake King
Rainfall to date: 101.7 mm. Days with significant stubble moisture: 53
| 25 May | 1 June | 8 June |
| 62% 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 |
Merredin
Rainfall to date: 111.3 mm. Days with significant stubble moisture: 35
| 25 May | 1 June | 8 June |
|---|---|---|
| 21% spore released - blackspot risk high | 36% spore released - blackspot risk medium | 53% spore released - blackspot risk medium |
| Do not sow | Sow – do not sow dry | Sow – do not sow dry |
Mingenew
Rainfall to date: 124.3 mm. Days with significant stubble moisture: 24
| 25 May | 1 June | 8 June |
|---|---|---|
| 4% spore released - blackspot risk high | 13% spore released - blackspot risk high | 27% spore released - blackspot risk high |
| Do not sow | Do not sow | Do not sow |
Moora North West
Rainfall to date: 108.9 mm. Days with significant stubble moisture: 35
| 25 May | 1 June | 8 June |
|---|---|---|
| 21% spore released - blackspot risk high | 36% spore released - blackspot risk medium | 53% spore released - blackspot risk medium |
| Do not sow | Do not sow | Sow - do not sow dry |
Mount Howick
Rainfall to date: 113 mm. Days with significant stubble moisture: 52
| 25 May | 1 June | 8 June |
|---|---|---|
| 59% spore released - blackspot risk medium | 70% spore released - blackspot risk low | 82% spore released - blackspot risk low |
| Sow – do not sow dry | Sow – do not sow dry | Sow – do not sow dry |
Mt Barker
Rainfall to date: 150.5 mm. Days with significant stubble moisture: 85
| 25 May | 1 June | 8 June |
| 98% spore released - blackspot risk low | 100% spore released - blackspot risk low | 100% spore released - blackspot risk low |
| Sow – do not sow dry | Sow – do not sow dry | Sow – do not sow dry |
Mullewa
Rainfall to date: 111 mm. Days with significant stubble moisture: 35
| 25 May | 1 June | 8 June |
|---|---|---|
| 21% spore released - blackspot risk high | 36% spore released - blackspot risk medium | 53% spore released - blackspot risk medium |
| Do not sow | Do not sow | Sow – do not sow dry |
Narrogin
Rainfall to date: 105.5 mm. Days with significant stubble moisture: 42
| 25 May | 1 June | 8 June |
|---|---|---|
| 36% spore released - blackspot risk medium | 53% spore released - blackspot risk medium | 68% spore released - blackspot risk low |
| Do not sow | Sow – do not sow dry | Sow – do not sow dry |
Newdegate
Rainfall to date: 84.6 mm. Days with significant stubble moisture: 44
| 25 May | 1 June | 8 June |
|---|---|---|
| 41% spore released - blackspot risk medium | 57% spore released - blackspot risk medium | 72% spore released - blackspot risk low |
| Sow – do not sow dry | Sow – do not sow dry | Sow – do not sow dry |
Northam
Rainfall to date: 84.3 mm. Days with significant stubble moisture: 36
| 25 May | 1 June | 8 June |
|---|---|---|
| 23% spore released - blackspot risk high | 38% spore released - blackspot risk medium | 55% spore released - blackspot risk medium |
| Do not sow | Do not sow | Sow – do not sow dry |
Pingrup
Rainfall to date: 88.3 mm. Days with significant stubble moisture: 47
| 25 May | 1 June | 8 June |
| 48% spore released - blackspot risk medium | 64% spore released - blackspot risk low | 77% spore released - blackspot risk low |
| Sow - do not sow dry | Sow – do not sow dry | Sow – do not sow dry |
Salmon Gums
Rainfall to date: 106 mm. Days with significant stubble moisture: 60
| 25 May | 1 June | 8 June |
|---|---|---|
| 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: 110.2 mm. Days with significant stubble moisture: 59
| 25 May | 1 June | 8 June |
|---|---|---|
| 74% spore released - blackspot risk low | 85% spore released - blackspot risk low | 92% spore released - blackspot risk low |
| Sow – do not sow dry | Sow – do not sow dry | Sow – do not sow dry |
Tammin
Rainfall to date: 97.6 mm. Days with significant stubble moisture: 28
| 25 May | 1 June | 8 June |
|---|---|---|
| 9% spore released - blackspot risk high | 21% spore released - blackspot risk high | 36% spore released - blackspot risk medium |
| Do not sow | Do not sow | Do not sow |
Toodyay
Rainfall to date: 85.8 mm. Days with significant stubble moisture: 40
| 25 May | 1 June | 8 June |
|---|---|---|
| 31% spore released - blackspot risk medium | 48% spore released - blackspot risk medium | 64% spore released - blackspot risk low |
| Do not sow | Sow - do not sow dry | Sow – do not sow dry |
