Field pea blackspot management guide for Western Australia - 4 June 2024

Page last updated: Thursday, 6 June 2024 - 7:31am

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 1st January 2024 to 3rd June 2024 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 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.

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 Western Australia, 4th June 2024.
Map showing the relative current risk of spores based upon Blackspot Model outputs for various locations in Western Australia, 4th June 2024.

 

Bencubbin

Last date used for prediction: 3 June 2024
Rainfall to date: 69.3 mm
Days with significant stubble moisture: 37

4 Jun

11 Jun

18 Jun

48% spores released - blackspot risk medium

64% spores released - blackspot risk low

77% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Boyatup

Last date used for prediction: 3 June 2024
Rainfall to date: 82.8 mm
Days with significant stubble moisture: 56

4 Jun

11 Jun

18 Jun

70% spores released - blackspot risk low

82% spores released - blackspot risk low

90% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Cascade

Last date used for prediction: 3 June 2024
Rainfall to date: 84.6 mm
Days with significant stubble moisture: 45

4 Jun

11 Jun

18 Jun

66% spores released - blackspot risk low

77% spores released - blackspot risk low

87% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Condingup

Last date used for prediction: 3 June 2024
Rainfall to date: 132 mm
Days with significant stubble moisture: 46

4 Jun

11 Jun

18 Jun

50% spores released - blackspot risk medium

66% spores released - blackspot risk low

79% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Coomalbidgup

Last date used for prediction: 3 June 2024
Rainfall to date: 99.2 mm
Days with significant stubble moisture: 45

4 Jun

11 Jun

18 Jun

62% spores released - blackspot risk low

75% spores released - blackspot risk low

86% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Cunderdin

Last date used for prediction: 3 June 2024
Rainfall to date: 90.8 mm
Days with significant stubble moisture: 37

4 Jun

11 Jun

18 Jun

48% spores released - blackspot risk medium

64% spores released - blackspot risk low

77% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Dalwallinu

Last date used for prediction: 3 June 2024
Rainfall to date: 95.2 mm
Days with significant stubble moisture: 37

4 Jun

11 Jun

18 Jun

48% spores released - blackspot risk medium

64% spores released - blackspot risk low

77% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Darkan

Last date used for prediction: 3 June 2024
Rainfall to date: 167.5 mm
Days with significant stubble moisture: 50

4 Jun

11 Jun

18 Jun

75% spores released - blackspot risk low

86% spores released - blackspot risk low

93% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Dinninup (Boyup Brook)

Last date used for prediction: 3 June 2024
Rainfall to date: 122.2 mm
Days with significant stubble moisture: 33

4 Jun

11 Jun

18 Jun

38% spores released - blackspot risk medium

55% spores released - blackspot risk medium

70% spores released - blackspot risk low

Do not sow

Sow - do not sow dry

Sow - do not sow dry

Ejanding (Dowerin)

Last date used for prediction: 3 June 2024
Rainfall to date: 102.4 mm
Days with significant stubble moisture: 41

4 Jun

11 Jun

18 Jun

57% spores released - blackspot risk medium

70% spores released - blackspot risk low

82% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Esperance Downs

Last date used for prediction: 3 June 2024
Rainfall to date: 80.4 mm
Days with significant stubble moisture: 52

4 Jun

11 Jun

18 Jun

66% spores released - blackspot risk low

79% spores released - blackspot risk low

88% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Gairdner

Last date used for prediction: 3 June 2024
Rainfall to date: 160.2 mm
Days with significant stubble moisture: 71

4 Jun

11 Jun

18 Jun

92% spores released - blackspot risk low

96% spores released - blackspot risk low

99% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Grass Patch

Last date used for prediction: 3 June 2024
Rainfall to date: 80.6 mm
Days with significant stubble moisture: 53

4 Jun

11 Jun

18 Jun

80% spores released - blackspot risk low

88% spores released - blackspot risk low

94% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Jacup

Last date used for prediction: 3 June 2024
Rainfall to date: 114.4 mm
Days with significant stubble moisture: 57

4 Jun

11 Jun

18 Jun

74% spores released - blackspot risk low

85% spores released - blackspot risk low

92% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Jerdacuttup

Last date used for prediction: 3 June 2024
Rainfall to date: 92.4 mm
Days with significant stubble moisture: 51

4 Jun

11 Jun

18 Jun

59% spores released - blackspot risk medium

72% spores released - blackspot risk low

83% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Katanning

Last date used for prediction: 3 June 2024
Rainfall to date: 73.4 mm
Days with significant stubble moisture: 39

4 Jun

11 Jun

18 Jun

53% spores released - blackspot risk medium

68% spores released - blackspot risk low

80% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Kojonup

Last date used for prediction: 3 June 2024
Rainfall to date: 86.3 mm
Days with significant stubble moisture: 24

4 Jun

11 Jun

18 Jun

19% spores released - blackspot risk high

34% spores released - blackspot risk medium

50% spores released - blackspot risk medium

Do not sow

Do not sow

Sow - do not sow dry

Kondinin

Last date used for prediction: 3 June 2024
Rainfall to date: 136.2 mm
Days with significant stubble moisture: 50

4 Jun

11 Jun

18 Jun

75% spores released - blackspot risk low

86% spores released - blackspot risk low

93% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Kulin

Last date used for prediction: 3 June 2024
Rainfall to date: 119 mm
Days with significant stubble moisture: 50

4 Jun

11 Jun

18 Jun

75% spores released - blackspot risk low

86% spores released - blackspot risk low

93% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Lake King

Last date used for prediction: 3 June 2024
Rainfall to date: 120.6 mm
Days with significant stubble moisture: 51

4 Jun

11 Jun

18 Jun

77% spores released - blackspot risk low

86% spores released - blackspot risk low

93% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Lort River

Last date used for prediction: 3 June 2024
Rainfall to date: 79.2 mm
Days with significant stubble moisture: 42

4 Jun

11 Jun

18 Jun

59% spores released - blackspot risk medium

72% spores released - blackspot risk low

83% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Merredin

Last date used for prediction: 3 June 2024
Rainfall to date: 95.6 mm
Days with significant stubble moisture: 37

4 Jun

11 Jun

18 Jun

48% spores released - blackspot risk medium

64% spores released - blackspot risk low

77% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Mingenew

Last date used for prediction: 3 June 2024
Rainfall to date: 78.8 mm
Days with significant stubble moisture: 21

4 Jun

11 Jun

18 Jun

13% spores released - blackspot risk high

27% spores released - blackspot risk high

43% spores released - blackspot risk medium

Do not sow

Do not sow

Sow - do not sow dry

Moora North West

Last date used for prediction: 3 June 2024
Rainfall to date: 59.6 mm
Days with significant stubble moisture: 28

4 Jun

11 Jun

18 Jun

27% spores released - blackspot risk high

43% spores released - blackspot risk medium

59% spores released - blackspot risk medium

Do not sow

Sow - do not sow dry

Sow - do not sow dry

Mount Burdett

Last date used for prediction: 3 June 2024
Rainfall to date: 61.2 mm
Days with significant stubble moisture: 43

4 Jun

11 Jun

18 Jun

46% spores released - blackspot risk medium

59% spores released - blackspot risk medium

74% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Mount Howick

Last date used for prediction: 3 June 2024
Rainfall to date: 101.6 mm
Days with significant stubble moisture: 49

4 Jun

11 Jun

18 Jun

55% spores released - blackspot risk medium

70% spores released - blackspot risk low

82% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Mount Madden East

Last date used for prediction: 3 June 2024
Rainfall to date: 91.8 mm
Days with significant stubble moisture: 45

4 Jun

11 Jun

18 Jun

66% spores released - blackspot risk low

77% spores released - blackspot risk low

87% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Mount Ney

Last date used for prediction: 3 June 2024
Rainfall to date: 51.6 mm
Days with significant stubble moisture: 37

4 Jun

11 Jun

18 Jun

31% spores released - blackspot risk medium

46% spores released - blackspot risk medium

62% spores released - blackspot risk low

Do not sow

Sow - do not sow dry

Sow - do not sow dry

Mt Barker

Last date used for prediction: 3 June 2024
Rainfall to date: 113.6 mm
Days with significant stubble moisture: 53

4 Jun

11 Jun

18 Jun

68% spores released - blackspot risk low

80% spores released - blackspot risk low

89% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Mullewa

Last date used for prediction: 3 June 2024
Rainfall to date: 80 mm
Days with significant stubble moisture: 25

4 Jun

11 Jun

18 Jun

21% spores released - blackspot risk high

36% spores released - blackspot risk medium

53% spores released - blackspot risk medium

Do not sow

Sow - do not sow dry

Sow - do not sow dry

Munglinup

Last date used for prediction: 3 June 2024
Rainfall to date: 87.8 mm
Days with significant stubble moisture: 52

4 Jun

11 Jun

18 Jun

66% spores released - blackspot risk low

77% spores released - blackspot risk low

87% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Munglinup West

Last date used for prediction: 3 June 2024
Rainfall to date: 132.5 mm
Days with significant stubble moisture: 66

4 Jun

11 Jun

18 Jun

85% spores released - blackspot risk low

91% spores released - blackspot risk low

96% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Narrogin

Last date used for prediction: 3 June 2024
Rainfall to date: 89.8 mm
Days with significant stubble moisture: 42

4 Jun

11 Jun

18 Jun

59% spores released - blackspot risk medium

74% spores released - blackspot risk low

85% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Newdegate

Last date used for prediction: 3 June 2024
Rainfall to date: 75.5 mm
Days with significant stubble moisture: 28

4 Jun

11 Jun

18 Jun

27% spores released - blackspot risk high

41% spores released - blackspot risk medium

57% spores released - blackspot risk medium

Do not sow

Sow - do not sow dry

Sow - do not sow dry

Northam

Last date used for prediction: 3 June 2024
Rainfall to date: 70.6 mm
Days with significant stubble moisture: 34

4 Jun

11 Jun

18 Jun

41% spores released - blackspot risk medium

57% spores released - blackspot risk medium

72% spores released - blackspot risk low

Do not sow

Sow - do not sow dry

Sow - do not sow dry

Pingaring

Last date used for prediction: 3 June 2024
Rainfall to date: 121.6 mm
Days with significant stubble moisture: 49

4 Jun

11 Jun

18 Jun

74% spores released - blackspot risk low

83% spores released - blackspot risk low

91% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Pingrup

Last date used for prediction: 3 June 2024
Rainfall to date: 70.5 mm
Days with significant stubble moisture: 36

4 Jun

11 Jun

18 Jun

46% spores released - blackspot risk medium

62% spores released - blackspot risk low

75% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Ravensthorpe

Last date used for prediction: 3 June 2024
Rainfall to date: 96.8 mm
Days with significant stubble moisture: 61

4 Jun

11 Jun

18 Jun

80% spores released - blackspot risk low

88% spores released - blackspot risk low

94% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Ridley North

Last date used for prediction: 3 June 2024
Rainfall to date: 66 mm
Days with significant stubble moisture: 49

4 Jun

11 Jun

18 Jun

64% spores released - blackspot risk low

75% spores released - blackspot risk low

86% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Salmon Gums

Last date used for prediction: 3 June 2024
Rainfall to date: 98 mm
Days with significant stubble moisture: 51

4 Jun

11 Jun

18 Jun

64% spores released - blackspot risk low

75% spores released - blackspot risk low

86% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Scaddan

Last date used for prediction: 3 June 2024
Rainfall to date: 96.2 mm
Days with significant stubble moisture: 61

4 Jun

11 Jun

18 Jun

83% spores released - blackspot risk low

90% spores released - blackspot risk low

96% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Tammin

Last date used for prediction: 3 June 2024
Rainfall to date: 86.8 mm
Days with significant stubble moisture: 41

4 Jun

11 Jun

18 Jun

57% spores released - blackspot risk medium

72% spores released - blackspot risk low

83% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

Wattening (Bolgart & Toodyay)

Last date used for prediction: 3 June 2024
Rainfall to date: 93.6 mm
Days with significant stubble moisture: 43

4 Jun

11 Jun

18 Jun

62% spores released - blackspot risk low

75% spores released - blackspot risk low

86% spores released - blackspot risk low

Sow - do not sow dry

Sow - do not sow dry

Sow - do not sow dry

More Information

For more information contact Jean Galloway at DPIRD on +61 9690 2172.