Field pea blackspot management guide for South Australia - 27 June 2018

Page last updated: Friday, 29 June 2018 - 9:47am

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 2018 to 26 June 2018 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

Balaklava

Rainfall to date: 89mm. Days with significant stubble moisture: 50

Weekly forecast

24 June

1 July

8 July

Blackspot severity

3-4

2

2

Sowing guide (based on agronomic suitability)

 

Okay to sow but risk is medium

 

Okay to sow

Okay to sow

lackspot risk

Medium

Low

Low

Blyth (Hart)

Rainfall to date: 108mm. Days with significant stubble moisture: 74

Weekly forecast

24 June

1 July

8 July

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Bordertown

Rainfall to date: 132mm. Days with significant stubble moisture: 62

Weekly forecast

24 June

1 July

8 July

Blackspot severity

2

1

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Bute

Rainfall to date: 122mm. Days with significant stubble moisture: 74

Weekly forecast

24 June

1 July

8 July

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Clare

Rainfall to date: 162mm. Days with significant stubble moisture: 87

Weekly forecast

24 Jun

1 Jul

8 Jul

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Crystal Brook

Rainfall to date: 93mm. Days with significant stubble moisture: 47

Weekly forecast

24 June

1 July

8 July

Blackspot severity

3-4

3-4

2

Sowing guide (based on agronomic suitability)

Okay to sow , but risk medium

Okay to sow , but risk medium

Okay to sow

Blackspot risk

Medium

Medium

Low

Eudunda

Rainfall to date: 118mm. Days with significant stubble moisture: 72

Weekly forecast

24 June

1 July

8 July

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Farrel Flat

Rainfall to date: 121.3mm. Days with significant stubble moisture: 64

Weekly forecast

24 June

1 July

8 July

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Keith

Rainfall to date: 130mm. Days with significant stubble moisture: 54

Weekly forecast

24 June

1 July

8 July

Blackspot severity

2

2

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Kimba

Rainfall to date: 83.8mm. Days with significant stubble moisture: 38

Weekly forecast

24 June

1 July

8 July

Blackspot severity

3 to 4

3 to 4

2

Sowing guide (based on agronomic suitability)

Okay to sow but risk is medium

Okay to sow but risk is medium

Okay to sow

Blackspot risk

Medium

Medium

Low

Kingsford

Rainfall to date: 121mm. Days with significant stubble moisture: 86

Weekly forecast

24 June

1 July

8 July

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Kyancutta

Rainfall to date: 64mm. Days with significant stubble moisture: 44

Weekly forecast

24 June

1 July

8 July

Blackspot severity

3 to 4

3 to 4

2

Sowing guide (based on agronomic suitability)

Okay to sow but risk is medium

Okay to sow but risk is medium

Okay to sow

Blackspot risk

Medium

Medium

Low

Lameroo

Rainfall to date: 69mm. Days with significant stubble moisture: 41

Weekly forecast

24 June

1 July

8 July

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Okay to sow but risk is high

Okay to sow but risk is high

Okay to sow but risk is high

Blackspot risk

High

High

High

Lock

Rainfall to date: 85mm. Days with significant stubble moisture: 53

Weekly forecast

24 June

1 July

8 July

Blackspot severity

2

2

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Maitland

Rainfall to date: 142mm. Days with significant stubble moisture: 71

Weekly forecast

24 June

1 July

8 July

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Mannum

Rainfall to date: 72mm. Days with significant stubble moisture: 47

Weekly forecast

24 June

1 July

8 July

Blackspot severity

3 to 4

3 to 4

2

Sowing guide (based on agronomic suitability)

Okay to sow but risk is medium

Okay to sow but risk is medium

Okay to sow

Blackspot risk

Medium

Medium

Low

Minlaton

Rainfall to date: 108mm. Days with significant stubble moisture: 52

Weekly forecast

24 June

1 July

8 July

Blackspot severity

3 to 4

2

1

Sowing guide (based on agronomic suitability)

Okay to sow but risk is medium

Okay to sow

Okay to sow

Blackspot risk

Medium

Low

Low

Minnipa

Rainfall to date: 57mm. Days with significant stubble moisture: 40

Weekly forecast

24 June

1 July

8 July

Blackspot severity

3 to 4

3 to 4

3 to 4

Sowing guide (based on agronomic suitability)

 

Getting too late to sow and risk is medium

 

Getting too late to sow and risk is medium

 

Getting too late to sow and risk is medium

Blackspot risk

Medium

Medium

Medium

Mount Barker

Rainfall to date: 242mm. Days with significant stubble moisture: 99

Weekly forecast

24 June

1 July

8 July

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Murray Bridge

Rainfall to date: 75mm. Days with significant stubble moisture: 47

Weekly forecast

24 June

1 July

8 July

Blackspot severity

3 to 4

3 to 4

2

Sowing guide (based on agronomic suitability)

Okay to sow but risk is medium

Okay to sow but risk is medium

Okay to sow

Blackspot risk

Medium

Medium

Low

Mypolonga

Rainfall to date: 66mm. Days with significant stubble moisture: 41

Weekly forecast

24 June

1 July

8 July

Blackspot severity

3 to 4

3 to 4

3 to 4

Sowing guide (based on agronomic suitability)

Okay to sow but risk is medium

Okay to sow but risk is medium

Okay to sow but risk is medium

Blackspot risk

Medium

Medium

Medium

Naracoorte

Rainfall to date: 162mm. Days with significant stubble moisture: 90

Weekly forecast

24 June

1 July

8 July

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Nuriootpa

Rainfall to date: 125mm. Days with significant stubble moisture: 76

Weekly forecast

24 June

1 July

8 July

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Palmer

Rainfall to date: 108mm. Days with significant stubble moisture: 69

Weekly forecast

24 June

1 July

8 July

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Port Broughton

Rainfall to date: 116mm. Days with significant stubble moisture: 67

Weekly forecast

24 June

1 July

8 July

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Riverton

Rainfall to date: 138mm. Days with significant stubble moisture: 71

Weekly forecast

24 June

1 July

8 July

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Sedan

Rainfall to date: 68mm. Days with significant stubble moisture: 47

Weekly forecast

24 June

1 July

8 July

Blackspot severity

3 to 4

3 to 4

2

Sowing guide (based on agronomic suitability)

Okay to sow but risk is medium

Okay to sow but risk is medium

Okay to sow

Blackspot risk

Medium

Medium

Low

Snowtown

Rainfall to date: 123mm. Days with significant stubble moisture: 77

Weekly forecast

24 June

1 July

8 July

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Strathalbyn

 

Rainfall to date: 125mm. Days with significant stubble moisture: 73

Weekly forecast

24 June

1 July

8 July

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Getting late to sow

Getting late to sow

Getting late to sow

Blackspot risk

Low

Low

Low

Tumby Bay

Rainfall to date: 81mm. Days with significant stubble moisture: 49

Weekly forecast

24 June

1 July

8 July

Blackspot severity

3 to 4

2

2

Sowing guide (based on agronomic suitability)

Okay to sow but risk is medium

Okay to sow

Okay to sow

Blackspot risk

Medium

Low

Low

Yeelanna

Rainfall to date: 134mm. Days with significant stubble moisture:55

Weekly forecast

24 June

1 July

8 July

Blackspot severity

2

2

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

Yorketown

Rainfall to date: 86mm. Days with significant stubble moisture: 56

Weekly forecast

24 June

1 July

8 July

Blackspot severity

2

2

1

Sowing guide (based on agronomic suitability)

Okay to sow

Okay to sow

Okay to sow

Blackspot risk

Low

Low

Low

More information

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

SARDISARDI

Contact information

Jean Galloway
+61 (0)8 9690 2172