Field pea blackspot management guide for South Australia - 28 April 2025

Page last updated: Thursday, 1 May 2025 - 8:42am

Field Pea Blackspot Management Guide is a location and season specific weekly forecast. It accounts for risks of spore showers, disease severity, and disease related yield loss suggesting a window of sowing dates that minimise risk of blackspot disease.

This prediction is based on DPIRD's Blackspot Manager model using weather data from 1 January 2025 to 27 April 2025 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 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. For more information on blackspot in South Australia contact Mohsen Khani at SARDI on (08) 8429 2285 or email mohsen.khani@sa.gov.au.

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.

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

Map showing the relative current risk of spores based upon Blackspot Model outputs for various locations in South Australia, 28 April 2025.
Map showing the relative current risk of spores based upon Blackspot Model outputs for various locations in South Australia, 28 April 2025.

Balaklava

Last date used for prediction: 27 April 2025
Rainfall to date: 9.4 mm
Days with significant stubble moisture: 6

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Blyth

Last date used for prediction: 27 April 2025
Rainfall to date: 13.8 mm
Days with significant stubble moisture: 14

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

3%

Blackspot risk

High

High

High

Bute

Last date used for prediction: 27 April 2025
Rainfall to date: 7.3 mm
Days with significant stubble moisture: 0

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Ceduna

Last date used for prediction: 27 April 2025
Rainfall to date: 19.8 mm
Days with significant stubble moisture: 15

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

1%

5%

Blackspot risk

High

High

High

Clare

Last date used for prediction: 27 April 2025
Rainfall to date: 10.6 mm
Days with significant stubble moisture: 14

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

3%

Blackspot risk

High

High

High

Cleve

Last date used for prediction: 27 April 2025
Rainfall to date: 10.8 mm
Days with significant stubble moisture: 11

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

2%

Blackspot risk

High

High

High

Crystal Brook

Last date used for prediction: 27 April 2025
Rainfall to date: 12.1 mm
Days with significant stubble moisture: 7

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Eudunda

Last date used for prediction: 27 April 2025
Rainfall to date: 18.1 mm
Days with significant stubble moisture: 14

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

3%

Blackspot risk

High

High

High

Farrell Flat

Last date used for prediction: 27 April 2025
Rainfall to date: 11.4 mm
Days with significant stubble moisture: 7

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Kapunda

Last date used for prediction: 27 April 2025
Rainfall to date: 15.4 mm
Days with significant stubble moisture: 7

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Keith

Last date used for prediction: 27 April 2025
Rainfall to date: 15.7 mm
Days with significant stubble moisture: 14

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

3%

Blackspot risk

High

High

High

Kimba

Last date used for prediction: 27 April 2025
Rainfall to date: 17 mm
Days with significant stubble moisture: 8

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Kyancutta

Last date used for prediction: 27 April 2025
Rainfall to date: 14.2 mm
Days with significant stubble moisture: 7

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Lock

Last date used for prediction: 27 April 2025
Rainfall to date: 23 mm
Days with significant stubble moisture: 22

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

3%

5%

15%

Blackspot risk

High

High

High

Loxton

Last date used for prediction: 27 April 2025
Rainfall to date: 19.5 mm
Days with significant stubble moisture: 17

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

4%

13%

Blackspot risk

High

High

High

Maitland

Last date used for prediction: 27 April 2025
Rainfall to date: 12.5 mm
Days with significant stubble moisture: 6

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Minlaton

Last date used for prediction: 27 April 2025
Rainfall to date: 13 mm
Days with significant stubble moisture: 7

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Minnipa PIRSA

Last date used for prediction: 27 April 2025
Rainfall to date: 23.4 mm
Days with significant stubble moisture: 7

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Mount Barker

Last date used for prediction: 27 April 2025
Rainfall to date: 38.4 mm
Days with significant stubble moisture: 22

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

3%

5%

15%

Blackspot risk

High

High

High

Murray Bridge

Last date used for prediction: 27 April 2025
Rainfall to date: 15.8 mm
Days with significant stubble moisture: 7

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Naracoorte

Last date used for prediction: 27 April 2025
Rainfall to date: 33.7 mm
Days with significant stubble moisture: 23

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

3%

6%

17%

Blackspot risk

High

High

High

Nuriootpa

Last date used for prediction: 27 April 2025
Rainfall to date: 18.8 mm
Days with significant stubble moisture: 13

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

2%

Blackspot risk

High

High

High

Palmer

Last date used for prediction: 27 April 2025
Rainfall to date: 10.9 mm
Days with significant stubble moisture: 0

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Parilla

Last date used for prediction: 27 April 2025
Rainfall to date: 10.3 mm
Days with significant stubble moisture: 1

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Port Broughton

Last date used for prediction: 27 April 2025
Rainfall to date: 7.6 mm
Days with significant stubble moisture: 7

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Riverton

Last date used for prediction: 27 April 2025
Rainfall to date: 21.4 mm
Days with significant stubble moisture: 8

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Roseworthy

Last date used for prediction: 27 April 2025
Rainfall to date: 13.2 mm
Days with significant stubble moisture: 14

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

3%

Blackspot risk

High

High

High

Sedan

Last date used for prediction: 27 April 2025
Rainfall to date: 8.7 mm
Days with significant stubble moisture: 0

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Snowtown

Last date used for prediction: 27 April 2025
Rainfall to date: 8 mm
Days with significant stubble moisture: 7

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Strathalbyn

Last date used for prediction: 27 April 2025
Rainfall to date: 23.5 mm
Days with significant stubble moisture: 21

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

2%

4%

13%

Blackspot risk

High

High

High

Tepko

Last date used for prediction: 27 April 2025
Rainfall to date: 8.4 mm
Days with significant stubble moisture: 0

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Truro

Last date used for prediction: 27 April 2025
Rainfall to date: 33.6 mm
Days with significant stubble moisture: 15

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

3%

Blackspot risk

High

High

High

Tumby Bay

Last date used for prediction: 27 April 2025
Rainfall to date: 16.2 mm
Days with significant stubble moisture: 7

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Wolseley

Last date used for prediction: 27 April 2025
Rainfall to date: 37.9 mm
Days with significant stubble moisture: 24

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

4%

7%

19%

Blackspot risk

High

High

High

Yeelanna

Last date used for prediction: 27 April 2025
Rainfall to date: 16.6 mm
Days with significant stubble moisture: 8

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

Yorketown

Last date used for prediction: 27 April 2025
Rainfall to date: 9.3 mm
Days with significant stubble moisture: 7

Forecast for crops sown on

28 Apr

5 May

12 May

Spores released

0%

0%

0%

Blackspot risk

High

High

High

More Information

For more information contact Mohsen Khani at SARDI on ph: +61 8 8429 2285.