Field pea blackspot management guide for South Australia - 23 April 2019

Page last updated: Friday, 26 April 2019 - 10:25am

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 21 April 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

Balaklava

Rainfall to date: 11.2mm     Days with significant stubble moisture: 7

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early to sow

Blackspot risk

High

High

High

Blyth (Hart)

Rainfall to date: 14mm     Days with significant stubble moisture: 7

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early to sow

Blackspot risk

High

High

High

Bordertown

Rainfall to date: 20mm     Days with significant stubble moisture: 11

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Too early to sow

Blackspot risk

High

High

High

Bute

Rainfall to date: 9mm     Days with significant stubble moisture: 0

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Marginally early to sow

OK to sow, but disease risk is high

Blackspot risk

High

High

High

Ceduna

Rainfall to date: 18mm     Days with significant stubble moisture: 1

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Marginally early to sow

OK to sow, but disease risk is high

Blackspot risk

High

High

High

Clare

Rainfall to date: 17.4mm     Days with significant stubble moisture: 10

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Too early to sow

Blackspot risk

High

High

High

Crystal Brook

Rainfall to date: 18mm     
Days with significant stubble moisture: 14

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Marginally early to sow

OK to sow, but disease risk is high

Blackspot risk

High

High

High

Eudunda

Rainfall to date: 16.2mm     Days with significant stubble moisture: 11

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early to sow

Blackspot risk

High

High

High

Farrell Flat

Rainfall to date: 10.7mm     Days with significant stubble moisture: 7

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Too early to sow

Blackspot risk

High

High

High

Keith

Rainfall to date: 27.1mm     Days with significant stubble moisture: 23

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early to sow

Blackspot risk

High

High

High

Kimba

Rainfall to date: 10.4mm     Days with significant stubble moisture: 1

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early to sow

Blackspot risk

High

High

High

Kingsford

Rainfall to date: 16mm     Days with significant stubble moisture: 7

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early to sow

Blackspot risk

High

High

High

Kyancutta

Rainfall to date: 12.5mm     Days with significant stubble moisture: 1

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early to sow

Blackspot risk

High

High

High

Lameroo

Rainfall to date: 14.6mm    Days with significant stubble moisture: 8

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early to sow

Blackspot risk

High

High

High

Lock

Rainfall to date: 10.1mm     Days with significant stubble moisture: 1

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early to sow

Blackspot risk

High

High

High

Maitland

Rainfall to date: 12.7mm     Days with significant stubble moisture: 5

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Too early to sow

Blackspot risk

High

High

High

Mannum

Rainfall to date: 10.8mm     Days with significant stubble moisture: 9

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Too early to sow

Blackspot risk

High

High

High

Minlaton

Rainfall to date: 8.5mm     Days with significant stubble moisture: 1

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Too early to sow

Blackspot risk

High

High

High

Minnipa

Rainfall to date: 19.1mm     Days with significant stubble moisture: 6

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Marginally early to sow

OK to sow, but disease risk is high

Blackspot risk

High

High

High

Mount Barker

Rainfall to date: 26.8mm     Days with significant stubble moisture: 15

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Too early to sow

Blackspot risk

High

High

High

Murray Bridge

Rainfall to date: 9.9mm     Days with significant stubble moisture: 7

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early to sow

Blackspot risk

High

High

High

Murray Bridge (Mypolonga)

Rainfall to date: 9.9mm     Days with significant stubble moisture: 7

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early to sow

Blackspot risk

High

High

High

Naracoorte

Rainfall to date: 28.2mm    Days with significant stubble moisture: 21

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Too early to sow

Blackspot risk

High

High

High

Nuriootpa

Rainfall to date: 11.8mm      Days with significant stubble moisture: 8

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early  to sow

Blackspot risk

High

High

High

Palmer

Rainfall to date: 8.4mm      Days with significant stubble moisture: 5

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early  to sow

Blackspot risk

High

High

High

Port Broughton

Rainfall to date: 13.2mm     Days with significant stubble moisture: 7

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

OK  to sow, but disease risk is high

Blackspot risk

High

High

High

Riverton

Rainfall to date: 22.2mm     Days with significant stubble moisture: 15

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Too early to sow

Blackspot risk

High

High

High

Sedan

Rainfall to date: 7mm     Days with significant stubble moisture: 6

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early to sow

Blackspot risk

High

High

High

Snowtown

Rainfall to date: 8mm     Days with significant stubble moisture: 7

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early to sow

Blackspot risk

High

High

High

Strathalbyn

Rainfall to date: 17.4mm     Days with significant stubble moisture: 17

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early to sow

Blackspot risk

High

High

High

Tumby Bay

Rainfall to date: 6.6mm     Days with significant stubble moisture: 0

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early to sow

Blackspot risk

High

High

High

Yeelanna

Rainfall to date: 12.2mm     Days with significant stubble moisture: 1

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Marginally early to sow

Blackspot risk

High

High

High

Yorketown

Rainfall to date: 12.8mm     Days with significant stubble moisture: 8

Weekly forecast

21 Apr

28 Apr

5 May

Blackspot severity

5

5

5

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Too early to sow

Blackspot risk

High

High

High

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