Field pea blackspot management guide for South Australia - 19 April 2021

Page last updated: Thursday, 22 April 2021 - 12:04pm

Please note: This content may be out of date and is currently under review.

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 2021 to 18 April 2021 from the nearest weather station.

You may notice some 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 can be influenced by BOM locations. The locations that have changed are Hart now Blyth, Bordertown now Wolseley, Kingsford now Roseworthy, Lameroo now Parilla, Mannum now Tepko, and Mypolonga now Murray Bridge.

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.

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

Balaklava

Rainfall to date: 36.9 mm     Days with significant stubble moisture: 31

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

13%

27%

43%

Blackspot risk

High

High

Medium

Blyth

Rainfall to date: 37.2 mm     Days with significant stubble moisture: 22

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

3%

10%

23%

Blackspot risk

High

High

High

Bute

Rainfall to date: 36.8 mm     Days with significant stubble moisture: 21

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

2%

9%

21%

Blackspot risk

High

High

High

Ceduna

Rainfall to date: 53.3 mm      Days with significant stubble moisture: 33

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

17%

31%

48%

Blackspot risk

High

Medium

Medium

Clare

Rainfall to date: 48.4 mm      Days with significant stubble moisture: 34

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

19%

34%

50%

Blackspot risk

High

Medium

Medium

Cleve

Rainfall to date: 72.2 mm     Days with significant stubble moisture: 31

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

13%

27%

43%

Blackspot risk

High

High

Medium

Crystal Brook

Rainfall to date: 28.5 mm       Days with significant stubble moisture: 14

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

0%

2%

9%

Blackspot risk

High

High

High

Eudunda

Rainfall to date: 42.8 mm     Days with significant stubble moisture: 28

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

9%

21%

36%

Blackspot risk

High

High

Medium

Farrell Flat

Rainfall to date: 29.3 mm     Days with significant stubble moisture: 20

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

2%

7%

19%

Blackspot risk

High

High

High

Kapunda

Rainfall to date: 47.5 mm      Days with significant stubble moisture: 36

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

23%

38%

55%

Blackspot risk

High

Medium

Medium

Keith

Rainfall to date: 67 mm      Days with significant stubble moisture: 30

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

12%

25%

41%

Blackspot risk

High

High

Medium

Kimba

Rainfall to date: 57.4 mm      Days with significant stubble moisture: 29

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

10%

23%

38%

Blackspot risk

High

High

Medium

Kyancutta

Rainfall to date: 44.6 mm      Days with significant stubble moisture: 37

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

25%

41%

57%

Blackspot risk

High

Medium

Medium

Lock

Rainfall to date: 47.3 mm      Days with significant stubble moisture: 26

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

6%

17%

31%

Blackspot risk

High

High

Medium

Maitland

Rainfall to date: 73.4 mm      Days with significant stubble moisture: 32

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

15%

29%

46%

Blackspot risk

High

High

Medium

Minlaton

Rainfall to date: 63.4 mm     Days with significant stubble moisture: 32

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

15%

29%

46%

Blackspot risk

High

High

Medium

Minnipa Pirsa

Rainfall to date: 43.8 mm      Days with significant stubble moisture: 25

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

5%

15%

29%

Blackspot risk

High

High

High

Mount Barker

Rainfall to date: 104 mm      Days with significant stubble moisture: 47

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

48%

64%

77%

Blackspot risk

Medium

Low

Low

Murray Bridge

Rainfall to date: 47.4 mm      Days with significant stubble moisture: 27

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

7%

19%

34%

Blackspot risk

High

High

Medium

Naracoorte

Rainfall to date: 59.9 mm      Days with significant stubble moisture: 22

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

3%

10%

23%

Blackspot risk

High

High

High

Nuriootpa

Rainfall to date: 45.6 mm      Days with significant stubble moisture: 34

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

19%

34%

50%

Blackspot risk

High

Medium

Medium

Palmer

Rainfall to date: 52.3 mm       Days with significant stubble moisture: 27

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

7%

19%

34%

Blackspot risk

High

High

Medium

Parilla

Rainfall to date: 33.5 mm      Days with significant stubble moisture: 23

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

3%

12%

25%

Blackspot risk

High

High

High

Port Broughton

Rainfall to date: 41.7 mm      Days with significant stubble moisture: 34

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

19%

34%

50%

Blackspot risk

High

Medium

Medium

Riverton

Rainfall to date: 50.1 mm      Days with significant stubble moisture: 40

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

31%

48%

64%

Blackspot risk

Medium

Medium

Low

Roseworthy

Rainfall to date: 49.8 mm     Days with significant stubble moisture: 34

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

19%

34%

50%

Blackspot risk

High

Medium

Medium

Sedan

Rainfall to date: 34.4 mm     Days with significant stubble moisture: 25

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

5%

15%

29%

Blackspot risk

High

High

High

Snowtown

Rainfall to date: 25.2 mm     Days with significant stubble moisture: 21

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

2%

9%

21%

Blackspot risk

High

High

High

Strathalbyn

Rainfall to date: 83.9 mm     Days with significant stubble moisture: 43

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

38%

55%

70%

Blackspot risk

Medium

Medium

Low

Tepko

Rainfall to date: 48 mm        Days with significant stubble moisture: 23

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

3%

12%

25%

Blackspot risk

High

High

High

Tumby Bay

Rainfall to date: 41.8 mm     Days with significant stubble moisture: 26

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

6%

17%

31%

Blackspot risk

High

High

Medium

Wolseley

Rainfall to date: 49.1 mm      Days with significant stubble moisture: 22

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

3%

10%

23%

Blackspot risk

High

High

High

Yeelanna

Rainfall to date: 64.7 mm      Days with significant stubble moisture: 25

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

5%

15%

29%

Blackspot risk

High

High

High

Yorketown

Rainfall to date: 58.8 mm      Days with significant stubble moisture: 27

Forecast for crops sown on

18 Apr

25 Apr

2 May

Spores released

7%

19%

34%

Blackspot risk

High

High

Medium

More information

For more information contact Dr Jenny Davidson at SARDI on ph +61 (0)8 8303 9389.

SARDI logoSARDI logo

Contact information

Jean Galloway
+61 (0)8 9690 2172