Field pea blackspot management guide for Victoria - 26 June 2023

Page last updated: Tuesday, 27 June 2023 - 7:36am

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 2023 to 25th June 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 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 or implement a disease management plan based on the blackspot risk of field pea crops. The Blackspot risk will be low once the majority of blackspot spores (approximately 60%) have been released prior to the crop emergence and sowing after this date will reduce yield losses from blackspot. There are many other reasons that affect grain yield and sowing prior to a low blackspot risk can often be advantageous, therefore, it is recommended discussing individual situations with an agronomist.

Blackspot risk

Spores released (%)

Yield loss range (%)

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 Victoria, 26th June 2023.
Map showing the relative current risk of spores based upon Blackspot Model outputs for various locations in Victoria, 26th June 2023.

Avalon Airport

Last date used for prediction: 25 June 2023
Rainfall to date: 148.2 mm
Days with significant stubble moisture: 91

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

100%

100%

100%

Blackspot risk

Low

Low

Low

Ballarat

Last date used for prediction: 25 June 2023
Rainfall to date: 307 mm
Days with significant stubble moisture: 118

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

100%

100%

100%

Blackspot risk

Low

Low

Low

Bendigo

Last date used for prediction: 25 June 2023
Rainfall to date: 269.2 mm
Days with significant stubble moisture: 100

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

100%

100%

100%

Blackspot risk

Low

Low

Low

Beulah West

Last date used for prediction: 25 June 2023
Rainfall to date: 154.6 mm
Days with significant stubble moisture: 66

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

86%

93%

97%

Blackspot risk

Low

Low

Low

Buln Buln

Last date used for prediction: 25 June 2023
Rainfall to date: 417.4 mm
Days with significant stubble moisture: 115

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

100%

100%

100%

Blackspot risk

Low

Low

Low

Charlton

Last date used for prediction: 25 June 2023
Rainfall to date: 169 mm
Days with significant stubble moisture: 71

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

91%

96%

99%

Blackspot risk

Low

Low

Low

Cressy

Last date used for prediction: 25 June 2023
Rainfall to date: 273 mm
Days with significant stubble moisture: 121

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

100%

100%

100%

Blackspot risk

Low

Low

Low

Derrinallum

Last date used for prediction: 25 June 2023
Rainfall to date: 256.4 mm
Days with significant stubble moisture: 117

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

100%

100%

100%

Blackspot risk

Low

Low

Low

Echuca Aerodrome

Last date used for prediction: 25 June 2023
Rainfall to date: 257.2 mm
Days with significant stubble moisture: 104

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

100%

100%

100%

Blackspot risk

Low

Low

Low

Edenhope

Last date used for prediction: 25 June 2023
Rainfall to date: 310.5 mm
Days with significant stubble moisture: 110

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

100%

100%

100%

Blackspot risk

Low

Low

Low

Horsham

Last date used for prediction: 25 June 2023
Rainfall to date: 192.4 mm
Days with significant stubble moisture: 85

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

99%

100%

100%

Blackspot risk

Low

Low

Low

Kerang

Last date used for prediction: 25 June 2023
Rainfall to date: 181.5 mm
Days with significant stubble moisture: 70

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

90%

96%

98%

Blackspot risk

Low

Low

Low

Mildura Airport

Last date used for prediction: 25 June 2023
Rainfall to date: 134.4 mm
Days with significant stubble moisture: 51

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

59%

74%

85%

Blackspot risk

Medium

Low

Low

Molyullah

Last date used for prediction: 25 June 2023
Rainfall to date: 423.2 mm
Days with significant stubble moisture: 104

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

100%

100%

100%

Blackspot risk

Low

Low

Low

Nhill

Last date used for prediction: 25 June 2023
Rainfall to date: 173.2 mm
Days with significant stubble moisture: 87

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

99%

100%

100%

Blackspot risk

Low

Low

Low

Quambatook South

Last date used for prediction: 25 June 2023
Rainfall to date: 174.4 mm
Days with significant stubble moisture: 70

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

90%

96%

98%

Blackspot risk

Low

Low

Low

Swan Hill Aerodrome

Last date used for prediction: 25 June 2023
Rainfall to date: 172.2 mm
Days with significant stubble moisture: 63

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

82%

90%

96%

Blackspot risk

Low

Low

Low

Warracknabeal Ailsa

Last date used for prediction: 25 June 2023
Rainfall to date: 182.4 mm
Days with significant stubble moisture: 83

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

98%

99%

100%

Blackspot risk

Low

Low

Low

Warranooke

Last date used for prediction: 25 June 2023
Rainfall to date: 223.6 mm
Days with significant stubble moisture: 101

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

100%

100%

100%

Blackspot risk

Low

Low

Low

Wycheproof

Last date used for prediction: 25 June 2023
Rainfall to date: 180.5 mm
Days with significant stubble moisture: 80

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

97%

99%

100%

Blackspot risk

Low

Low

Low

Yatchaw

Last date used for prediction: 25 June 2023
Rainfall to date: 401 mm
Days with significant stubble moisture: 127

Forecast for crops sown on

26 Jun

3 Jul

10 Jul

Spores released

100%

100%

100%

Blackspot risk

Low

Low

Low

More information

For more information contact Dr Joshua Fanning at Agriculture Victoria on +61 419 272 075.

Contact information

Jean Galloway
+61 (0)8 9690 2172