Field pea blackspot management guide for South Australia - 19 May 2020

Page last updated: Thursday, 21 May 2020 - 10:17am

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 2020 to 18th May 2020 from the nearest weather station.

You may notice some weather station changes for some locations, this is to ensure that the weather data being used is the most accurate available for the area. The locations that have changed are Hart now Blyth, Bordertown now Wolseley, Kingsford now Nuriootpa Pirsa, Lameroo now Parrakie, Mannun and Mypolonga now Murray Bridge.

Sowing time can depend on a range of factors and it is recommended to consult an agronomist to determine the optimal sowing window for your situation.

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

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: 139 mm.  Days with significant stubble moisture: 43

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Medium

Medium

Low

Blyth

Rainfall to date: 165.4 mm.  Days with significant stubble moisture: 52

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Medium

Low

Low

Bute

Rainfall to date: 137.6 mm.  Days with significant stubble moisture: 60

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Low

Low

Low

Ceduna

Rainfall to date: 82.4 mm.  Days with significant stubble moisture: 36

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

High

High

Medium

Clare

Rainfall to date: 201.4 mm.  Days with significant stubble moisture: 62

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Low

Low

Low

Crystal Brook

Rainfall to date: 201.1 mm.  Days with significant stubble moisture: 59

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Low

Low

Low

Eudunda

Rainfall to date: 126.4 mm.  Days with significant stubble moisture: 45

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Medium

Medium

Low

Farrell Flat

Rainfall to date: 148.4 mm.  Days with significant stubble moisture: 51

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Medium

Low

Low

Keith

Rainfall to date: 167.3 mm.  Days with significant stubble moisture: 53

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Low

Low

Low

Kent Town

Rainfall to date: 195.8 mm.  Days with significant stubble moisture: 64

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Low

Low

Low

Kimba

Rainfall to date: 89.9 mm.  Days with significant stubble moisture: 41

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Medium

Medium

Medium

Kyancutta

Rainfall to date: 82.7 mm.  Days with significant stubble moisture: 43

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Medium

Medium

Low

Lock

Rainfall to date: 100.6 mm.  Days with significant stubble moisture: 50

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Medium

Low

Low

Maitland

Rainfall to date: 158.8 mm.  Days with significant stubble moisture: 57

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Low

Low

Low

Minlaton

Rainfall to date: 138.9 mm.  Days with significant stubble moisture: 49

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Medium

Medium

Low

Minnipa Pirsa

Rainfall to date: 122.8 mm.  Days with significant stubble moisture: 41

Forecast for crops sown on

18 May

25 May

1 Jun

Blackspot risk

Medium

Medium

Medium

Mount Barker 

Rainfall to date: 224.4 mm.  Days with significant stubble moisture: 72

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Low

Low

Low

Murray Bridge

Rainfall to date: 124.4 mm.  Days with significant stubble moisture: 55

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Low

Low

Low

Naracoorte

Rainfall to date: 114.3 mm.  Days with significant stubble moisture: 55

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Low

Low

Low

Nuriootpa

Rainfall to date: 154.2 mm.  Days with significant stubble moisture: 51

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Medium

Low

Low

Nuriootpa Pirsa

Rainfall to date: 154.2 mm.  Days with significant stubble moisture: 51

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Medium

Low

Low

Parrakie

Rainfall to date: 141.1 mm.  Days with significant stubble moisture: 48

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Medium

Medium

Low

Palmer

Rainfall to date: 110.8 mm.  Days with significant stubble moisture: 51

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Medium

Low

Low

Port Broughton

Rainfall to date: 152.2 mm.  Days with significant stubble moisture: 56

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Low

Low

Low

Riverton

Rainfall to date: 150.6 mm.  Days with significant stubble moisture: 44

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Medium

Medium

Low

Sedan

Rainfall to date: 90 mm.  Days with significant stubble moisture: 41

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Medium

Medium

Medium

Snowtown

Rainfall to date: 120.2 mm.  Days with significant stubble moisture: 58

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Low

Low

Low

Strathalbyn

Rainfall to date: 167.4 mm.  Days with significant stubble moisture: 71

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Low

Low

Low

Tumby Bay

Rainfall to date: 82.6 mm.  Days with significant stubble moisture: 44

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Medium

Medium

Low

Wolseley

Rainfall to date: 144.1 mm.  Days with significant stubble moisture: 57

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Low

Low

Low

Yeelanna

Rainfall to date: 96 mm.  Days with significant stubble moisture: 44

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Medium

Medium

Low

Yorketown

Rainfall to date: 164.7 mm.  Days with significant stubble moisture: 55

Forecast for crops sown on

18 May

25 May

1 June

Blackspot risk

Low

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