Field pea blackspot sowing guide for Western Australia - 13 May 2019

Page last updated: Thursday, 16 May 2019 - 2:36pm

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 2019 to 12th 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

Bencubbin

Rainfall to date: 22.9mm     Days with significant stubble moisture: 7

12 May

19 May

26 May

0% spore released - blackspot risk high

0% spore released - blackspot risk high

0% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Boyup Brook

Rainfall to date: 65.5mm     Days with significant stubble moisture: 24

12 May

19 May

26 May

4% spore released - blackspot risk high

7% spore released - blackspot risk high

19% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Cunderdin

Rainfall to date: 24.8mm     Days with significant stubble moisture: 11

12 May

19 May

26 May

0% spore released - blackspot risk high

0% spore released - blackspot risk high

2% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Dalwallinu

Rainfall to date: 12.4mm     Days with significant stubble moisture: 6

12 May

19 May

26 May

0% spore released - blackspot risk high

0% spore released - blackspot risk high

0% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Dowerin

Rainfall to date: 18.5mm     Days with significant stubble moisture: 7

12 May

19 May

26 May

0% spore released - blackspot risk high

0% spore released - blackspot risk high

0% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Gairdner

Rainfall to date: 81mm      Days with significant stubble moisture: 46

12 May

19 May

26 May

46% spore released - blackspot risk medium

53% spore released - blackspot risk medium

68% spore released - blackspot risk low

Do not sow

Sow - only if 3.5mm rain  between 12-19 May

Sow - only if two rain events between 12-26 May

Grass Patch

Rainfall to date: 32.9mm      Days with significant stubble moisture: 27

12 May

19 May

26 May

7% spore released - blackspot risk high

12% spore released - blackspot risk high

25% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Hillman

Rainfall to date: 44.2mm     Days with significant stubble moisture: 28

12 May

19 May

26 May

9% spore released - blackspot risk high

13% spore released - blackspot risk high

27% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Jacup

Rainfall to date: 88.1mm     Days with significant stubble moisture: 47

12 May

19 May

26 May

48% spore released - blackspot risk medium

55% spore released - blackspot risk medium

70% spore released - blackspot risk low

Do not sow

Sow - only if 3.5mm rain between 12-19 May

Sow - if rain events between 12-26 May

Katanning

Rainfall to date: 65.2mm      Days with significant stubble moisture: 35

12 May

19 May

26 May

21% spore released - blackspot risk high

27% spore released - blackspot risk high

43% spore released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Kojonup

Rainfall to date: 97.4mm     Days with significant stubble moisture: 33

12 May

19 May

26 May

17% spore released - blackspot risk high

23% spore released - blackspot risk high

38% spore released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Kondinin

Rainfall to date: 30.6mm      Days with significant stubble moisture: 14

12 May

19 May

26 May

0% spore released - blackspot risk high

0% spore released - blackspot risk high

4% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Kulin

Rainfall to date: 28.3mm     Days with significant stubble moisture: 23

12 May

19 May

26 May

3% spore released - blackspot risk high

6% spore released - blackspot risk high

17% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Lake King

Rainfall to date: 40.6mm     Days with significant stubble moisture: 21

12 May

19 May

26 May

2% spore released - blackspot risk high

4% spore released - blackspot risk high

13% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Merredin

Rainfall to date: 32mm      Days with significant stubble moisture: 19

12 May

19 May

26 May

1% spore released - blackspot risk high

3% spore released - blackspot risk high

10% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Mingenew

Rainfall to date: 11.3mm      Days with significant stubble moisture: 3

12 May

19 May

26 May

0% spore released - blackspot risk high

0% spore released - blackspot risk high

0% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Moora North West

Rainfall to date: 22.4mm      Days with significant stubble moisture: 14

12 May

19 May

26 May

0% spore released - blackspot risk high

0% spore released - blackspot risk high

4% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Mount Howick

Rainfall to date: 51.6mm      Days with significant stubble moisture: 24

12 May

19 May

26 May

4% spore released - blackspot risk high

7% spore released - blackspot risk high

19% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Mt Barker

Rainfall to date: 148.4mm      Days with significant stubble moisture: 60

12 May

19 May

26 May

75% spore released - blackspot risk low

82% spore released - blackspot risk low

90% spore released - blackspot risk low

Do not sow – not suited agronomically

Do not sow – not suited agronomically

Sow – do not sow dry

Mullewa

Rainfall to date: 37.3mm      Days with significant stubble moisture: 14

12 May

19 May

26 May

0% spore released - blackspot risk high

0% spore released - blackspot risk high

4% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Narrogin

Rainfall to date: 55mm      Days with significant stubble moisture: 38

12 May

19 May

26 May

27% spore released - blackspot risk high

34% spore released - blackspot risk medium

50% spore released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Newdegate

Rainfall to date: 35.5mm      Days with significant stubble moisture: 26

12 May

19 May

26 May

6% spore released - blackspot risk high

10% spore released - blackspot risk high

23% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Northam

Rainfall to date: 24.1mm      Days with significant stubble moisture: 24

12 May

19 May

26 May

4% spore released - blackspot risk high

7% spore released - blackspot risk high

19% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Pingrup

Rainfall to date: 39.1mm      Days with significant stubble moisture: 31

12 May

19 May

26 May

13% spore released - blackspot risk high

19% spore released - blackspot risk high

34% spore released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Salmon Gums

Rainfall to date: 46.8mm     Days with significant stubble moisture: 23

12 May

19 May

26 May

3% spore released - blackspot risk high

6% spore released - blackspot risk high

17% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Scaddan

Rainfall to date: 46.8mm       Days with significant stubble moisture: 32

12 May

19 May

26 May

15% spore released - blackspot risk high

21% spore released - blackspot risk high

36% spore released - blackspot risk medium

Do not sow

Do not sow

Do not sow

Tammin

Rainfall to date: 36mm     Days with significant stubble moisture: 26

12 May

19 May

26 May

6% spore released - blackspot risk high

10% spore released - blackspot risk high

23% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Toodyay

Rainfall to date: 30.5mm      Days with significant stubble moisture: 25

12 May

19 May

26 May

5% spore released - blackspot risk high

9% spore released - blackspot risk high

21% spore released - blackspot risk high

Do not sow

Do not sow

Do not sow

Contact information

Jean Galloway
+61 (0)8 9690 2172