Field pea blackspot management guide for New South Wales - 20 June 2022

Page last updated: Tuesday, 21 June 2022 - 11:55am

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 2022 to 19th June 2022 from the nearest weather station.

You may notice weather station changes for one location, 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 location that has changed is Wagga Ag Institute which now is Wagga Wagga AMO.

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 (%)

Range of yield loss for different levels of blackspot risk (%)

Low

60 – 100

2 - 15

Medium

30 - 59

20 - 35

High

0 - 29

25 - 50

Risk forecast map

Risk forecast map
Map showing the relative current risk of spores based upon Blackspot Model outputs for various locations in New South Wales, 20th June 2022.

Cootamundra

Last date used for prediction: 19 June 2022
Rainfall to date: 409.9 mm Days with significant stubble moisture: 99

Forecast for crops sown on

19 June

26 June

3 July

Sowing guide (based on agronomic suitability)

OK to sow

Getting too late to sow - after 30th June

Too late to sow after 14th July

Blackspot risk

Low

Low

Low

Forbes

Last date used for prediction: 19 June 2022
Rainfall to date: 420.8 mm Days with significant stubble moisture: 110

Forecast for crops sown on

19 June

26 June

3 July

Sowing guide (based on agronomic suitability)

Too late to sow after 23rd June

Too late to sow

Too late to sow

Blackspot risk

Low

Low

Low

Griffith

Last date used for prediction: 19 June 2022
Rainfall to date: 396.4 mm Days with significant stubble moisture: 94

Forecast for crops sown on

19 June

26 June

3 July

Sowing guide (based on agronomic suitability)

Too late to sow

Too late to sow

Too late to sow

Blackspot risk

Low

Low

Low

Temora

Last date used for prediction: 19 June 2022
Rainfall to date: 468.4 mm Days with significant stubble moisture: 101

Forecast for crops sown on

19 June

26 June

3 July

Sowing guide (based on agronomic suitability)

Too late to sow after 23rd June

Too late to sow

Too late to sow

Blackspot risk

Low

Low

Low

Wagga Wagga AMO

Last date used for prediction: 19 June 2022
Rainfall to date: 330.4 mm Days with significant stubble moisture: 102

Forecast for crops sown on

19 June

26 June

3 July

Sowing guide (based on agronomic suitability)

OK to sow

Getting too late to sow - after 30th June

Too late to sow after 14th July

Blackspot risk

Low

Low

Low

More Information

For more information contact Dr Kurt Lindbeck at NSW DPI on ph + 61 (0)2 6938 1608.

Contact information

Jean Galloway
+61 (0)8 9690 2172

Author

Janette Pratt

Funding bodies