Field pea blackspot management guide for South Australia - 7 June 2017

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. Rainfall from January to 6 June 2017 from the nearest weather station has been used to produce this forecast.

Key to blackspot severity scores

Table 1 Percentage yield loss (in years) for different levels of blackspot scenarios

Blackspot severity

5 out of 10 years

3 out of 10 years

1 out of 10 years

1

0

0

0

2

2

5

15

3-4

20

25

35

5

25

30

50

Balaklava

Rainfall to date: 167mm; days with significant stubble moisture: 71

Weekly forecast

6 June

13 June

20 June

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

Blyth

Rainfall to date: 158mm; days with significant stubble moisture: 70

Weekly forecast

6 June

13 June

20 June

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: 202mm; days with significant stubble moisture: 81

Weekly forecast

6 June

13 June

20 June

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

Bute

Rainfall to date: 149mm; days with significant stubble moisture: 68

Weekly forecast

6 June

13 June

20 June

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: 189mm; days with significant stubble moisture: 87

Weekly forecast

6 June

13 June

20 June

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: 134mm; days with significant stubble moisture: 54

Weekly forecast

6 June

13 June

20 June

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

Eudunda

Rainfall to date: 152mm; days with significant stubble moisture: 67

Weekly forecast

6 June

13 June

20 June

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: 189mm; days with significant stubble moisture: 81

Weekly forecast

6 June

13 June

20 June

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

Kimba

Rainfall to date: 139mm; days with significant stubble moisture: 53

Weekly forecast

6 June

13 June

20 June

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

Kingsford

Rainfall to date: 155mm; days with significant stubble moisture: 76

Weekly forecast

6 June

13 June

20 June

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: 115mm; days with significant stubble moisture: 57

Weekly forecast

6 June

13 June

20 June

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

Lameroo

Rainfall to date: 186mm; days with significant stubble moisture: 65

Weekly forecast

6 June

13 June

20 June

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

Lock

Rainfall to date: 95mm; days with significant stubble moisture: 54

Weekly forecast

6 June

13 June

20 June

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: 145mm; days with significant stubble moisture: 76

Weekly forecast

6 June

13 June

20 June

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: 118mm; days with significant stubble moisture: 58

Weekly forecast

6 June

13 June

20 June

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

Minlaton

Rainfall to date: 155mm; days with significant stubble moisture: 70

Weekly forecast

6 June

13 June

20 June

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

Minnipa

Rainfall to date: 121mm; days with significant stubble moisture: 47

Weekly forecast

6 June

13 June

20 June

Blackspot severity

3-4

2

2

Sowing guide (based on agronomic suitability)

Getting too late to sow and blackspot disease risk exists

Getting too late to sow

Getting too late to sow

Blackspot risk

Medium

Low

Low

Mount Barker

Rainfall to date: 201mm; days with significant stubble moisture: 88

Weekly forecast

6 June

13 June

20 June

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: 130mm; days with significant stubble moisture: 70

Weekly forecast

6 June

13 June

20 June

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

Mypolonga

Rainfall to date: 119mm; days with significant stubble moisture: 67

Weekly forecast

6 June

13 June

20 June

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

Naracoorte

Rainfall to date: 253mm; days with significant stubble moisture: 85

Weekly forecast

6 June

13 June

20 June

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: 151mm; days with significant stubble moisture: 73

Weekly forecast

6 June

13 June

20 June

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: 115mm; days with significant stubble moisture: 58

Weekly forecast

6 June

13 June

20 June

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

Port Broughton

Rainfall to date: 133mm; days with significant stubble moisture: 59

Weekly forecast

6 June

13 June

20 June

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

Riverton

Rainfall to date: 187mm; days with significant stubble moisture: 68

Weekly forecast

6 June

13 June

20 June

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: 108mm; days with significant stubble moisture: 53

Weekly forecast

6 June

13 June

20 June

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

Snowtown

Rainfall to date: 175mm; days with significant stubble moisture: 75

Weekly forecast

6 June

13 June

20 June

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: 154mm; days with significant stubble moisture: 81

Weekly forecast

6 June

13 June

20 June

Blackspot severity

1

1

1

Sowing guide (based on agronomic suitability)

Marginally late to sow

Getting late to sow

Getting late to sow

Blackspot risk

Low

Low

Low

Tumby Bay

Rainfall to date: 73mm; days with significant stubble moisture: 46

Weekly forecast

6 June

13 June

20 June

Blackspot severity

3-4

2

2

Sowing guide (based on agronomic suitability)

Okay to sow but disease risk medium

Okay to sow

Okay to sow

Blackspot risk

Medium

Low

Low

Yeelanna

Rainfall to date: 95mm; days with significant stubble moisture: 44

Weekly forecast

6 June

13 June

20 June

Blackspot severity

3-4

3-4

2

Sowing guide (based on agronomic suitability)

Okay to sow but disease risk is medium

Okay to sow but disease risk is medium

Okay to sow

Blackspot risk

Medium

Medium

Low

Yorketown

Rainfall to date: 172mm; days with significant stubble moisture: 66

Weekly forecast

6 June

13 June

20 June

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

More information

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

SARDI logo

Contact information

Jean Galloway
+61 (0)8 9690 2172
Page last updated: Friday, 9 June 2017 - 9:29am

Author

Kawsar Salam

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