Final PestFax newsletter for 2019!

This is the 24th and final weekly issue of the PestFax newsletter for the 2019 growing season. Extra editions may be circulated if extraordinary circumstances occur after this time.

All of this season’s PestFax newsletters can be found at the department’s PestFax newsletter archive.

The PestFax team would like to say a big thank you to all those people who took the time to submit insect, plant disease and weed reports and identification requests this year. All reports are greatly appreciated and are vital for PestFax to keep growers and consultants informed and up to date with what is happening across WA.

2019 PestFax statistics

This year the PestFax team received more than 1100 reports in total (current to 4 November 2019).

The new collaboration between Agworld, Back Paddock, Planfarm and the PestFax service this season resulted in 430 reports (insects, disease and weeds) from consenting clients using the Agworld, Back Paddock Adviser and Planfarm Herbicide Guide apps. For more information see the 2019 PestFax Issue 19 article PestFax is collaborating with Agworld, Back Paddock and Planfarm platform users.

What were the top five reported pests?

The PestFax team received 747 invertebrate pest reports in total. The spring native budworm moth trapping program was the most reported with 324 reports received. The native budworm (140) was the insect most reported by the public, followed by lucerne flea (72). The top five insects reported are listed in Table 1, below.

Table 1 The top five pests and number of reports to the PestFax service during 2019
Insect Number of reports
Native budworm 140
Lucerne flea 72
Redlegged earth mite 57
Green peach aphid 20
Cabbage aphid 17

What were the top five reported plant diseases for 2019?

There were 96 plant disease reports received in total by the PestFax team via a variety of means. Spot-type net blotch was the most reported disease (30 reports), followed by sclerotinia stem rot (17). Table 2, below, displays the other diseases that were most commonly reported.

Table 2 The top plant diseases and number of reports to the PestFax service during 2019
Disease Number of reports
Spot-type net blotch 30
Sclerotinia stem rot 17
Powdery mildew 7
Blackleg 7
Septoria avenae blotch, Downy mildew, Rhizoctonia bare patch 4

2019 PestFax map statistics

PestFax map displaying occurences of plant and diseases reported for the previous month, current to 8 November 2019.
PestFax map displaying occurences of plant and diseases reported for the previous month, current to 8 November 2019

The PestFax map provides a visual display of the pests and diseases reported by the industry since 1996. Viewers can choose a host, a disorder and a time period. They can also select a 'Same time as last year' map view to highlight seasonal commonality or differences.

In 2019, an impressive 6302 maps were generated as of 4 November. This number includes every map generated between each dropdown box selection.

Maps that displayed ‘All’ disorders were generated the most with 4349 generated.

Powdery mildew was the disorder map most specifically generated (440), followed by Diamondback moth maps (377). To see what the other top disorder maps viewed were refer to Table 3 below. These disorders may have been viewed for previous season’s distribution (historical data) as well as this season.

Table 3 The most popular PestFax disorder maps (disease, insects and other) viewed in 2019
Disorder Number of maps generated
Powdery mildew 440
Diamondback moth 377
Australian plague locust 182
Sclerotinia stem rot 178
Native budworm 107

For more information on the PestFax service please contact Cindy Webster, PestFax newsletter editor, Narrogin on +61 (0)8 9881 0201.

For information on the PestFax Map or PestFax Reporter app please contact Art Diggle, Senior Research Officer, South Perth on +61 (0)8 9368 3563.