Field pea blackspot management guide for Western Australia - 24 April 2023

Page last updated: Wednesday, 26 April 2023 - 9:15pm

Please note: This content may be out of date and is currently under review.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 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 1 January 2023 to 23 April 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.

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

Bencubbin

Last date used for prediction: 23 April 2023
Rainfall to date: 84.7 mm Days with significant stubble moisture: 20

24 Apr

1 May

8 May

2% spores released - blackspot risk high

6% spores released - blackspot risk high

17% spores released - blackspot risk high

Do not sow

Do not sow

Do not sow

Boyup Brook

Last date used for prediction: 23 April 2023
Rainfall to date: 51.8 mm Days with significant stubble moisture: 38

24 Apr

1 May

8 May

27% spores released - blackspot risk high

41% spores released - blackspot risk medium

57% spores released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Cunderdin

Last date used for prediction: 23 April 2023
Rainfall to date: 84 mm Days with significant stubble moisture: 20

24 Apr

1 May

8 May

2% spores released - blackspot risk high

6% spores released - blackspot risk high

17% spores released - blackspot risk high

Do not sow

Do not sow

Do not sow

Dalwallinu

Last date used for prediction: 23 April 2023
Rainfall to date: 51.6 mm Days with significant stubble moisture: 24

24 Apr

1 May

8 May

4% spores released - blackspot risk high

12% spores released - blackspot risk high

25% spores released - blackspot risk high

Do not sow

Do not sow

Do not sow

Darkan

Last date used for prediction: 23 April 2023
Rainfall to date: 55 mm Days with significant stubble moisture: 33

24 Apr

1 May

8 May

17% spores released - blackspot risk high

29% spores released - blackspot risk high

46% spores released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Dowerin

Last date used for prediction: 23 April 2023
Rainfall to date: 101.9 mm Days with significant stubble moisture: 27

24 Apr

1 May

8 May

7% spores released - blackspot risk high

17% spores released - blackspot risk high

31% spores released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Gairdner

Last date used for prediction: 23 April 2023
Rainfall to date: 46.7 mm Days with significant stubble moisture: 21

24 Apr

1 May

8 May

2% spores released - blackspot risk high

7% spores released - blackspot risk high

19% spores released - blackspot risk high

Do not sow

Do not sow

Do not sow

Grass Patch

Last date used for prediction: 23 April 2023
Rainfall to date: 56 mm Days with significant stubble moisture: 38

24 Apr

1 May

8 May

27% spores released - blackspot risk high

41% spores released - blackspot risk medium

57% spores released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Jacup

Last date used for prediction: 23 April 2023
Rainfall to date: 83.4 mm Days with significant stubble moisture: 27

24 Apr

1 May

8 May

7% spores released - blackspot risk high

17% spores released - blackspot risk high

31% spores released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Katanning

Last date used for prediction: 23 April 2023
Rainfall to date: 51.4 mm Days with significant stubble moisture: 40

24 Apr

1 May

8 May

31% spores released - blackspot risk medium

46% spores released - blackspot risk medium

62% spores released - blackspot risk low

Do not sow

Do not sow

Too early to sow before the 10th May

Kojonup

Last date used for prediction: 23 April 2023
Rainfall to date: 35 mm Days with significant stubble moisture: 13

24 Apr

1 May

8 May

0% spores released - blackspot risk high

1% spores released - blackspot risk high

6% spores released - blackspot risk high

Do not sow

Do not sow

Do not sow

Kondinin

Last date used for prediction: 23 April 2023
Rainfall to date: 104 mm Days with significant stubble moisture: 26

24 Apr

1 May

8 May

6% spores released - blackspot risk high

15% spores released - blackspot risk high

29% spores released - blackspot risk high

Do not sow

Do not sow

Do not sow

Kulin

Last date used for prediction: 23 April 2023
Rainfall to date: 106.1 mm Days with significant stubble moisture: 26

24 Apr

1 May

8 May

6% spores released - blackspot risk high

15% spores released - blackspot risk high

29% spores released - blackspot risk high

Do not sow

Do not sow

Do not sow

Lake Camm

Last date used for prediction: 23 April 2023
Rainfall to date: 73.1 mm Days with significant stubble moisture: 23

24 Apr

1 May

8 May

3% spores released - blackspot risk high

10% spores released - blackspot risk high

23% spores released - blackspot risk high

Do not sow

Do not sow

Do not sow

Merredin

Last date used for prediction: 23 April 2023
Rainfall to date: 53.6 mm Days with significant stubble moisture: 21

24 Apr

1 May

8 May

2% spores released - blackspot risk high

7% spores released - blackspot risk high

19% spores released - blackspot risk high

Do not sow

Do not sow

Do not sow

Mingenew

Last date used for prediction: 23 April 2023
Rainfall to date: 28.6 mm Days with significant stubble moisture: 12

24 Apr

1 May

8 May

0% spores released - blackspot risk high

1% spores released - blackspot risk high

5% spores released - blackspot risk high

Do not sow

Do not sow

Do not sow

Moora North West

Last date used for prediction: 23 April 2023
Rainfall to date: 30.4 mm Days with significant stubble moisture: 21

24 Apr

1 May

8 May

2% spores released - blackspot risk high

7% spores released - blackspot risk high

19% spores released - blackspot risk high

Do not sow

Do not sow

Do not sow

Mount Howick

Last date used for prediction: 23 April 2023
Rainfall to date: 65.4 mm Days with significant stubble moisture: 47

24 Apr

1 May

8 May

48% spores released - blackspot risk medium

62% spores released - blackspot risk low

75% spores released - blackspot risk low

Do not sow

Too early to sow before the 10th May

Too early to sow before the 10th May

Mount Madden East

Last date used for prediction: 23 April 2023
Rainfall to date: 65.8 mm Days with significant stubble moisture: 18

24 Apr

1 May

8 May

1% spores released - blackspot risk high

4% spores released - blackspot risk high

13% spores released - blackspot risk high

Do not sow

Do not sow

Do not sow

Mt Barker WA

Last date used for prediction: 23 April 2023
Rainfall to date: 82.4 mm Days with significant stubble moisture: 46

24 Apr

1 May

8 May

46% spores released - blackspot risk medium

59% spores released - blackspot risk medium

74% spores released - blackspot risk low

Do not sow

Do not sow

Too early to sow before the 25th May

Mullewa

Last date used for prediction: 23 April 2023
Rainfall to date: 86.6 mm Days with significant stubble moisture: 32

24 Apr

1 May

8 May

15% spores released - blackspot risk high

27% spores released - blackspot risk high

43% spores released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Narrogin

Last date used for prediction: 23 April 2023
Rainfall to date: 107.4 mm Days with significant stubble moisture: 26

24 Apr

1 May

8 May

6% spores released - blackspot risk high

15% spores released - blackspot risk high

29% spores released - blackspot risk high

Do not sow

Do not sow

Do not sow

Newdegate

Last date used for prediction: 23 April 2023
Rainfall to date: 92.8 mm Days with significant stubble moisture: 26

24 Apr

1 May

8 May

6% spores released - blackspot risk high

15% spores released - blackspot risk high

29% spores released - blackspot risk high

Do not sow

Do not sow

Do not sow

Northam

Last date used for prediction: 23 April 2023
Rainfall to date: 81.3 mm Days with significant stubble moisture: 22

24 Apr

1 May

8 May

3% spores released - blackspot risk high

9% spores released - blackspot risk high

21% spores released - blackspot risk high

Do not sow

Do not sow

Do not sow

Pingaring

Last date used for prediction: 23 April 2023
Rainfall to date: 149.6 mm Days with significant stubble moisture: 27

24 Apr

1 May

8 May

7% spores released - blackspot risk high

17% spores released - blackspot risk high

31% spores released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Pingrup

Last date used for prediction: 23 April 2023
Rainfall to date: 74.5 mm Days with significant stubble moisture: 38

24 Apr

1 May

8 May

27% spores released - blackspot risk high

41% spores released - blackspot risk medium

57% spores released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Ravensthorpe

Last date used for prediction: 23 April 2023
Rainfall to date: 86.8 mm Days with significant stubble moisture: 31

24 Apr

1 May

8 May

13% spores released - blackspot risk high

25% spores released - blackspot risk high

41% spores released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Salmon Gums

Last date used for prediction: 23 April 2023
Rainfall to date: 65.4 mm Days with significant stubble moisture: 38

24 Apr

1 May

8 May

27% spores released - blackspot risk high

41% spores released - blackspot risk medium

57% spores released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Scaddan

Last date used for prediction: 23 April 2023
Rainfall to date: 46.2 mm Days with significant stubble moisture: 27

24 Apr

1 May

8 May

7% spores released - blackspot risk high

17% spores released - blackspot risk high

31% spores released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Tammin

Last date used for prediction: 23 April 2023
Rainfall to date: 93.4 mm Days with significant stubble moisture: 27

24 Apr

1 May

8 May

7% spores released - blackspot risk high

17% spores released - blackspot risk high

31% spores released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Toodyay

Last date used for prediction: 23 April 2023
Rainfall to date: 15 mm Days with significant stubble moisture: 12

24 Apr

1 May

8 May

0% spores released - blackspot risk high

1% spores released - blackspot risk high

5% spores released - blackspot risk high

Do not sow

Do not sow

Do not sow