Field pea blackspot management guide for Victoria - 8 May 2019

Page last updated: Thursday, 9 May 2019 - 2:22pm

Please note: This content may be out of date and is currently under review.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 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 1st January 2019 to 5th 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

Ballarat

Rainfall to date: 75.4mm     Days with significant stubble moisture: 40

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)

OK to sow but disease risk is medium

OK to sow but disease risk is medium

OK to sow

Blackspot risk

Medium

Medium

Low

Bendigo

Rainfall to date: 51.6mm     Days with significant stubble moisture: 24

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow but disease risk is high

OK to sow but disease risk is high

OK to sow but disease risk is high

Blackspot risk

High

High

High

Beulah West (Hopetoun)

Rainfall to date: 32.8mm      Days with significant stubble moisture: 12

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow but disease risk is high

OK to sow but disease risk is high

OK to sow but disease risk is high

Blackspot risk

High

High

High

Charlton

Rainfall to date: 80.6mm     Days with significant stubble moisture: 26

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow but disease risk is high

OK to sow but disease risk is high

OK to sow but disease risk is high

Blackspot risk

High

High

High

Cressy

Rainfall to date: 83.4mm     Days with significant stubble moisture: 32

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

5

5

3 to 4

Sowing guide (based on agronomic suitability)

OK to sow but disease risk is high

OK to sow but disease risk is high

OK to sow but disease risk is medium

Blackspot risk

High

High

Medium

Edenhope

Rainfall to date: 38mm     Days with significant stubble moisture: 29

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow but disease risk is high

OK to sow but disease risk is high

OK to sow but disease risk is high

Blackspot risk

High

High

High

Horsham

Rainfall to date: 36.2mm     Days with significant stubble moisture: 11

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow but disease risk is high

OK to sow but disease risk is high

OK to sow but disease risk is high

Blackspot risk

High

High

High

Molyullah (Benalla)

Rainfall to date: 105.4mm     Days with significant stubble moisture: 50

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

2

2

1

Sowing guide (based on agronomic suitability)

OK to sow

OK to sow

OK to sow

Blackspot risk

Low

Low

Low

Nhill

Rainfall to date: 26.4mm     Days with significant stubble moisture: 18

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow but disease risk is high

OK to sow but disease risk is high

OK to sow but disease risk is high

Blackspot risk

High

High

High

Quambatook

Rainfall to date: 42.9mm      Days with significant stubble moisture: 19

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow but disease risk is high

OK to sow but disease risk is high

OK to sow but disease risk is high

Blackspot risk

High

High

High

Swan Hill Aerodrome

Rainfall to date: 41.6mm      Days with significant stubble moisture: 12

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow but disease risk is high

OK to sow but disease risk is high

OK to sow but disease risk is high

Blackspot risk

High

High

High

Warracknabeal

Rainfall to date: 49.4mm     Days with significant stubble moisture: 11

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow but disease risk is high

OK to sow but disease risk is high

OK to sow but disease risk is high

Blackspot risk

High

High

High

Warranooke (Marnoo)

Rainfall to date: 84.7mm     Days with significant stubble moisture: 17

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow but disease risk is high

OK to sow but disease risk is high

OK to sow but disease risk is high

Blackspot risk

High

High

High

Wycheproof

Rainfall to date: 60.2mm     Days with significant stubble moisture: 19

Forecast for crops sown on

5 May

12 May

19 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow but disease risk is high

OK to sow but disease risk is high

OK to sow but disease risk is high

Blackspot risk

High

High

High

Yatchaw (Hamilton)

Rainfall to date: 61.2mm     Days with significant stubble moisture: 43

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)

OK to sow but disease risk is medium

OK to sow but disease risk is medium

OK to sow

Blackspot risk

Medium

Medium

Low

More Information

For more information contact Dr Joshua Fanning at at Agriculture Victoria Research on ph +61 (0)3 4344 3335.

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Contact information

Jean Galloway
+61 (0)8 9690 2172

Author

Kawsar Salam

Funding bodies