Field pea blackspot management guide for South Australia - 17 June 2019

Page last updated: Tuesday, 18 June 2019 - 1:12pm

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 16 June 2019 from the nearest weather station.

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

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

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

Balaklava

Rainfall to date: 115.1 mm   Days with significant stubble moisture: 42

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is high

Getting too late to sow

Too late to sow

Blackspot risk

High

High

High

Blyth (Hart)

Rainfall to date: 136.6 mm   Days with significant stubble moisture: 44

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is high

Getting too late to sow

Too late to sow

Blackspot risk

High

High

High

Bordertown

Rainfall to date: 120.5 mm   Days with significant stubble moisture: 47

Weekly forecast

16 June

23 June

30 June

Blackspot severity

3 to 4

2

2

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is medium

OK to sow

Too late to sow

Blackspot risk

Medium

Low

Low

Bute

Rainfall to date: 111 mm      Days with significant stubble moisture: 36

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is high

OK to sow, but blackspot disease risk is high

Getting late to sow

Blackspot risk

High

High

High

Ceduna

Rainfall to date: 83.2 mm     Days with significant stubble moisture: 41

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Late to sow

Late to sow

Late to sow

Blackspot risk

High

High

High

Clare

Rainfall to date: 171.2 mm   Days with significant stubble moisture: 52

Weekly forecast

16 June

23 June

30 June

Blackspot severity

3 to 4

2

1

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is medium

OK to sow

OK to sow

Blackspot risk

Medium

Low

Low

Crystal Brook

Rainfall to date: 105.1 mm   Days with significant stubble moisture: 46

Weekly forecast

16 June

23 June

30 June

Blackspot severity

3 to 4

3 to 4

2

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is medium

OK to sow, but blackspot disease risk is medium

Getting too late to sow

Blackspot risk

Medium

Medium

Low

Eudunda

Rainfall to date: 93.2 mm     Days with significant stubble moisture: 50

Weekly forecast

16 June

23 June

30 June

Blackspot severity

3 to 4

2

2

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is medium

OK to sow

Getting too late to sow

Blackspot risk

Medium

Low

Low

Farrell Flat

Rainfall to date: 163.3 mm   Days with significant stubble moisture: 69

Weekly forecast

16 June

23 June

30 June

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Marginally late to sow

Marginally late to sow

Late to sow

Blackspot risk

Low

Low

Low

Keith

Rainfall to date: 115.4 mm   Days with significant stubble moisture: 54

Weekly forecast

16 June

23 June

30 June

Blackspot severity

2

2

1

Sowing guide (based on agronomic suitability)

OK to sow

OK to sow

Getting late to sow

Blackspot risk

Low

Low

Low

Kimba

Rainfall to date: 78.8 mm     Days with significant stubble moisture: 29

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is high

OK to sow, but blackspot disease risk is high

Getting late to sow

Blackspot risk

High

High

High

Kingsford

Rainfall to date: 103 mm      Days with significant stubble moisture: 44

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is high

OK to sow, but blackspot disease risk is high

Getting late to sow

Blackspot risk

High

High

High

Kyancutta

Rainfall to date: 88.8 mm     Days with significant stubble moisture: 39

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is high

OK to sow, but blackspot disease risk is high

Getting late to sow

Blackspot risk

High

High

High

Lameroo

Rainfall to date: 91.9 mm     Days with significant stubble moisture: 38

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is high

OK to sow, but blackspot disease risk is high

Getting late to sow

Blackspot risk

High

High

High

Lock

Rainfall to date: 54 mm        Days with significant stubble moisture: 33

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is high

OK to sow, but blackspot disease risk is high

Getting late to sow

Blackspot risk

High

High

High

Maitland

Rainfall to date: 136 mm      Days with significant stubble moisture: 43

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is high

OK to sow, but blackspot disease risk is high

Getting late to sow

Blackspot risk

High

High

High

Mannum

Rainfall to date: 68.2 mm     Days with significant stubble moisture: 37

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

3 to 4

3 to 4

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is high

OK to sow, but blackspot disease risk is medium

Getting late to sow

Blackspot risk

High

Medium

Medium

Minlaton

Rainfall to date: 97.5 mm     Days with significant stubble moisture: 34

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is high

OK to sow, but blackspot disease risk is high

Getting late to sow

Blackspot risk

High

High

High

Minnipa

Rainfall to date: 106.8 mm   Days with significant stubble moisture: 47

Weekly forecast

16 June

23 June

30 June

Blackspot severity

3 to 4

2

2

Sowing guide (based on agronomic suitability)

Getting too late to sow

Getting too late to sow

Late to sow

Blackspot risk

Medium

Low

Low

Mount Barker

Rainfall to date: 215.8 mm   Days with significant stubble moisture: 61

Weekly forecast

16 June

23 June

30 June

Blackspot severity

2

1

1

Sowing guide (based on agronomic suitability)

OK to sow

OK to sow

Getting late to sow

Blackspot risk

Low

Low

Low

Murray Bridge (Mypolonga)

Rainfall to date: 88.2 mm     Days with significant stubble moisture: 44

Weekly forecast

16 June

23 June

30 June

Blackspot severity

3 to 4

3 to 4

2

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is medium

OK to sow, but blackspot disease risk is medium

Getting late to sow

Blackspot risk

Medium

Medium

Low

Naracoorte

Rainfall to date: 120.7 mm   Days with significant stubble moisture: 55

Weekly forecast

16 June

23 June

30 June

Blackspot severity

2

2

1

Sowing guide (based on agronomic suitability)

OK to sow

OK to sow

Getting late to sow

Blackspot risk

Low

Low

Low

Nuriootpa

Rainfall to date: 106.9 mm   Days with significant stubble moisture: 41

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is high

OK to sow, but blackspot disease risk is high

Getting late to sow

Blackspot risk

High

High

High

Palmer

Rainfall to date: 78.2 mm     Days with significant stubble moisture: 47

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is high

OK to sow, but blackspot disease risk is high

Getting late to sow

Blackspot risk

High

High

High

Port Broughton

Rainfall to date: 127.9 mm   Days with significant stubble moisture: 36

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is high

OK to sow, but blackspot disease risk is high

Getting late to sow

Blackspot risk

High

High

High

Riverton

Rainfall to date: 145 mm      Days with significant stubble moisture: 52

Weekly forecast

16 June

23 June

30 June

Blackspot severity

3 to 4

2

1

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is medium

OK to sow

OK to sow

Blackspot risk

Medium

Low

Low

Sedan

Rainfall to date: 58.1 mm     Days with significant stubble moisture: 44

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is high

OK to sow, but blackspot disease risk is high

Getting late to sow

Blackspot risk

High

High

High

Snowtown

Rainfall to date: 101.4 mm   Days with significant stubble moisture: 45

Weekly forecast

16 June

23 June

30 June

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is high

OK to sow, but blackspot disease risk is high

Getting late to sow

Blackspot risk

High

High

High

Strathalbyn

Rainfall to date: 137.4 mm   Days with significant stubble moisture: 61

Weekly forecast

16 June

23 June

30 June

Blackspot severity

2

1

1

Sowing guide (based on agronomic suitability)

Marginally late to sow

Late to sow

Late to sow

Blackspot risk

Low

Low

Low

Tumby Bay

Rainfall to date: 77.7 mm     Days with significant stubble moisture: 43

Weekly forecast

16 June

23 June

30 June

Blackspot severity

3 to 4

3 to 4

2

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is medium

OK to sow, but blackspot disease risk is medium

Getting late to sow

Blackspot risk

Medium

Medium

Low

Yeelanna

Rainfall to date: 136.2 mm   Days with significant stubble moisture: 45

Weekly forecast

16 June

23 June

30 June

Blackspot severity

3 to 4

3 to 4

2

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is medium

OK to sow, but blackspot disease risk is medium

Too late to sow

Blackspot risk

Medium

Medium

Low

Yorketown

Rainfall to date: 108.2 mm   Days with significant stubble moisture: 47

Weekly forecast

16 June

23 June

30 June

Blackspot severity

3 to 4

2

2

Sowing guide (based on agronomic suitability)

OK to sow, but blackspot disease risk is medium

OK to sow

Getting late to sow

Blackspot risk

Medium

Low

Low

More information

For more information contact Dr Jenny Davidson at SARDI on ph +61 (0)8 8303 9389.

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Contact information

Jean Galloway
+61 (0)8 9690 2172