Field pea blackspot management guide for Victoria - 15th April 2018

Page last updated: Thursday, 19 April 2018 - 1:17pm

Please note: This content may be out of date and is currently under review.

The field pea blackspot management guide is a location and season specific weekly forecast of black spot risk in peas for different sowing dates. It accounts for varietal resistance and chemical options, agronomic yield potentials, agronomic constraints (frost and terminal drought), risk of spore 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 to minimise black spot risk.

This prediction is based on DPIRD's Blackspot Manager model using weather data from 1st January 2018 to 15th April 2018 from the nearest weather station.

Key to blackspot severity scores

Table 1. 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

Ballarat

Rainfall to date: 103mm; days with significant stubble moisture: 34

Forecast for crops sown on

15 April

22 April

29 April

Blackspot severity

5

3-4

3-4

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Too early to sow

Blackspot risk

High

Medium

Medium

Benalla

Rainfall to date: 64mm; days with significant stubble moisture: 34

Forecast for crops sown on

15 April

22 April

29 April

Blackspot severity

5

3-4

3-4

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Too early to sow

Blackspot risk

High

Medium

Medium

Charlton

Rainfall to date: 26mm; days with significant stubble moisture: 15

Forecast for crops sown on

15 April

22 April

29 April

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

Edenhope

Rainfall to date: 44mm; days with significant stubble moisture: 39

Forecast for crops sown on

15 April

22 April

29 April

Blackspot severity

5

5

3-4

Sowing guide (based on agronomic suitability)

Too early to sow

Too early to sow

Too early to sow

Blackspot risk

High

High

Medium

Hamilton

Rainfall to date: 53mm; days with significant stubble moisture: 33

Forecast for crops sown on

15 April

22 April

29 April

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

Hopetoun

Rainfall to date: 11mm; days with significant stubble moisture: 3

Forecast for crops sown on

15 April

22 April

29 April

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

Horsham

Rainfall to date: 32mm; days with significant stubble moisture: 28

Forecast for crops sown on

15 April

22 April

29 April

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

Swan Hill

Rainfall to date: 24mm; days with significant stubble moisture: 15

Forecast for crops sown on

15 April

22 April

29 April

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 Luise Sigel  (plant pathologist) at Agriculture Victoria on +61 (0)3 5362 2111.

Agriculture Victoria

Author

Kawsar Salam

Funding bodies