Field pea blackspot management guide for southern New South Wales - 8 May 2019

Page last updated: Friday, 10 May 2019 - 11:46am

Please note: This content may be out of date and is currently under review.

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 5 May 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

Cootamundra

Rainfall to date: 196.5mm Days with significant stubble moisture: 57

Forecast for crops sown on	5 May	12 May	19 May
Blackspot severity	2	1	1
Sowing guide (based on agronomic suitability)	Too early to sow – before 19th May	Too early to sow – before 19th May	Too early to sow – before 19th May
Blackspot risk	Low	Low	Low

Griffith

Rainfall to date: 141.8mm Days with significant stubble moisture: 44

Forecast for crops sown on	5 May	12 May	19 May
Blackspot severity	3 to 4	3 to 4	2
Sowing guide (based on agronomic suitability)	Marginally too early to sow - 7th May -12th May	Marginally too early to sow - 7th May -12th May	Getting too late to sow - after 9th June
Blackspot risk	Medium	Medium	Low

Temora

Rainfall to date: 186.9mm Days with significant stubble moisture: 54

Forecast for crops sown on	5 May	12 May	19 May
Blackspot severity	2	2	1
Sowing guide (based on agronomic suitability)	Marginally too early to sow - 13th May - 19th May	Marginally too early to sow - 13th May - 19th May	Getting too late to sow - after 16th June
Blackspot risk	Low	Low	Low

Wagga Ag Institute

Rainfall to date: 130.9mm Days with significant stubble moisture: 64

Forecast for crops sown on	5 May	12 May	19 May
Blackspot severity	1	1	1
Sowing guide (based on agronomic suitability)	Too early to sow – before 19^th May	Too early to sow – before 19^th May	Marginally too early to sow - 20th May - 26th May
Blackspot risk	Low	Low	Low

More Information

For more information contact Dr Kurt Lindbeck at NSW DPI on ph +61 (0)2 6938 1608.

Topics