Field pea blackspot management guide for southern New South Wales - 8 May 2019

Page last updated: Friday, 10 May 2019 - 11:46am

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 spores 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. Field pea crops should be sown so that the majority of blackspot spores (approximately 60%) have been released prior to the crop emergence.

This prediction is based on DPIRD's Blackspot Manager model using weather data from 1 January 2019 to 5 May 2019 from the nearest weather station.

Key to blackspot severity scores

Percentage yield loss (in years) for different levels of blackspot risk scenarios

Blackspot risk

5 out of 10 years

3 out of 10 years

1 out of 10 years

Low

2

5

15

Medium

20

25

35

High

25

30

50

Cootamundra

Rainfall to date: 196.5mm     Days with significant stubble moisture: 57

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

2

1

1

Sowing guide (based on agronomic suitability)

Too early to sow – before 19th May

Too early to sow – before 19th May

Too early to sow – before 19th May

Blackspot risk

Low

Low

Low

Griffith

Rainfall to date: 141.8mm     Days with significant stubble moisture: 44

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

3 to 4

3 to 4

2

Sowing guide (based on agronomic suitability)

Marginally too early to sow - 7th May -12th May

Marginally too early to sow - 7th May -12th May

Getting too late to sow - after 9th June

Blackspot risk

Medium

Medium

Low

Temora

Rainfall to date: 186.9mm     Days with significant stubble moisture: 54

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

2

2

1

Sowing guide (based on agronomic suitability)

Marginally too early to sow - 13th May -  19th May

Marginally too early to sow - 13th May -  19th May

Getting too late to sow - after 16th June

Blackspot risk

Low

Low

Low

Wagga Ag Institute

Rainfall to date: 130.9mm     Days with significant stubble moisture: 64

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Too early to sow – before 19th May

Too early to sow – before 19th May

Marginally too early to sow - 20th May - 26th May

Blackspot risk

Low

Low

Low

More Information

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

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Contact information

Jean Galloway
+61 (0)8 9690 2172

Field pea blackspot management guide for southern New South Wales - 8 May 2019

Author

Kawsar Salam

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