Rust alerts – 2017
22 May 2017 – Barley leaf rust (BLR) and loose smut have been found on barley regrowth in the West Kendenup area and BLR at a farm on Kojaneerup West Road in the shire of Albany. Leaf rust infection has been found in volunteer barley in several areas of the lower Great Southern recently which is an indicator that this disease could again be problematic for barley growers in this region for 2017. Read more in the PestFax newsletter.
15 May 2017 – Early indications are that 2017 is going to be another bad leaf rust year. Barley leaf rust has been found on barley volunteers from Tenterden to South Stirling. Wheat leaf rust has been found on wheat volunteers at Scaddan and Salmon Gums. Read more in the PestFax newsletter.
Rust alerts – 2016
9 September 2016 – Barley leaf rust has been found on Buloke, LaTrobe, Baudin and Bass barley crops in WA. For some crops, it is too late to spray, but spraying is recommended before flowering. Read more in the PestFax newsletter.
The warmer weather is allowing leaf rust in wheat and barley to develop and spread more rapidly. Unprotected crops should be monitored more carefully from now on. Read more in the Crop Watch newsletter.
2 September 2016 – There have been many reports of barley leaf rust across the WA grainbelt. There has also been one suspected case of stem rust found in a wheat crop at Pingaring. Growers are reminded to scout for rust and act if necessary. Read more in the PestFax newsletter.
26 August 2016 – There continue to be reports of leaf rust infections in barley, oats (crown rust) and wheat. Read more in the PestFax newsletter.
22 July 2016 – Growers are reminded to spray any barley leaf rust infections early to prevent difficulties later in the season. A Baudin barley crop has been found with leaf rust at Esperance. Read more in the PestFax newsletter.
15 July 2016 – Report of stem rust in flowering Yilgarn oats in Kumbarning. It is a feed crop undersown with serradella. Hot spot of infection, less than 15m in diameter in the crop, with a few plants having a couple of spores on each stem. Read more in the PestFax newsletter.
8 July 2016 – There have been reports of oat leaf rust on wild oats along the roadsides in the Avon Valley, particularly the Brookton Highway, York–Bruce Rock Road and along the Great Eastern Highway. Read more in the PestFax newsletter.
1 July 2016 – There have been at least three more confirmed cases of barley leaf rust in WA, providing growers a timely reminder to check their crops. Leaf rust was found in booting Fathom barley that had been sown in a barley/clover twin sown pasture in Wickepin. The infection was widespread across the crop. DAFWA plant pathologist Kithsiri Jaysena has reported leaf rust in a tillering Baudin barley crop in West Kendenup. Kith also reports leaf rust in a tillering Flinders barley crop in Nayerlup. Read more in the PestFax newsletter.
24 June 2016 – Severe stem rust in oat volunteers west of Wagin has been reported. Plant pathologist Geoff Thomas suggests that the presence of rust infected regrowth is a timely warning that other oat volunteers may be carrying rust inoculum and could act as a source of infection for sown susceptible oat varieties as the season progresses. Cereal rusts, particularly stem rust, can develop rapidly as temperatures become warmer in late winter into spring. Read more in the PestFax newsletter.
24 June 2016 – Barley leaf rust has been found in a Flinders barley crop at South Stirling and in a Bass barley crop in Gnowellen. Both crops were sown in early May and are close to early stem extension. Read more in the PestFax newsletter.
17 June 2016 – Barley leaf rust found in Oxford barley in South Stirling WA. Crops sown in April and early May must be monitored now.
Read more in the PestFax newsletter.
3 June 2016 – Stem and leaf rust has been found on oat volunteers by the roadside in the Narrogin shire. Oat volunteers and patches of wild oats are common places to find oat leaf or stem rust surviving outside of crops. Leaf rust is present in a Baudin barley crop at the early tillering stage at Coomalbidgup. There are 4-5 pustules on the lower leaf of plants. The severity of infection in the paddock is unknown. This crop was not treated with a seed dressings or fertiliser applied fungicide.
Read more in the PestFax newsletter.
30 May 2016 – Leaf rust has been found in early tillering Oxford barley at Gairdner in Western Australia last week. The paddock will be monitored for further development of disease. Leaf rust has also been seen in early sown (March) Hindmarsh barley, mixed with Urambie winter barley, in Dalyup WA. There was volunteer barley in some southern barley growing regions leading into this season and there were reports of leaf rust on barley volunteers from the South Stirlings area. Read more in the PestFax newsletter.
Cereal Rust Reports – 2016
Volume 14 Issue 8 – Wheat stem rust and wheat stripe rust situation, November 2016
15 November 2016 – The first report of wheat stem rust during the growing season has been reported from Victoria. An update is also provided on the reports of wheat stripe rust including pathotype determinations where known. Growers in the southern region are advised to monitor their crops for wheat stem rust. Samples of all rusts observed in cereal crops should be submitted for pathotype analysis to the Australian Cereal Rust Survey.
Volume 14 Issue 7 – Cereal rust situation, September 2016
19 September 2016 – Samples of wheat leaf rust, barley leaf rust, oat crown rust and oat stem rust have been received in 2016 at the Australian Cereal Rust Survey at the University of Sydney’s Plant Breeding Institute. Recent weather conditions across large areas of the cereal growing regions are likely to favour rust development.
Volume 14 Issue 6 – Wheat leaf rust and wheat stripe rust situation, late-winter 2016
31 August 2016 – Samples of wheat leaf rust have been received from Victoria, South Australia, Queensland and Western Australia. Samples of wheat stripe rust have been received from southern NSW and Queensland.
Volume 14 Issue 5 – Cereal rust situation, mid-winter 2016
7 July 2016 – Growers are urged to monitor crops for all rusts, in particular wheat leaf rust, after samples of all cereal rusts except stripe rust have been received in 2016 at the Australian Cereal Rust Survey at the University of Sydney’s Plant Breeding Institute. There have been reports of wheat leaf rust from multiple sites across Victoria and the Eyre Peninsula, with recent weather conditions likely to have distributed wheat leaf rust across the SA, Vic and southern NSW wheatbelt.
Volume 14 Issue 4 – Expected responses of Australian wheat, triticale and barley varieties to the cereal rust diseases and genotypic data for oat varieties
The rust responses for Australian wheat, barley and triticale varieties provide growers and technical advisers with updated information to make informed decisions. The 2016 edition includes the leaf rust, stem rust and barley grass stripe rust responses of barley varieties and an update on the currently known disease resistance genotypes in Australian oat varieties for the first time.
Volume 14 Issue 3 – The wheat leaf rust pathogen in Australia – pathogenic variation and pathotype designation.
Issue 3 describes the system used in Australia for designating pathotypes of the leaf rust pathogen of wheat, Puccinia triticina (formerly P. recondita f. sp. tritici), and provides information on the pathotypes detected over the past 10 years.
Volume 14 Issue 2 – The wheat stripe rust pathogen in Australia – pathogenic variation and pathotype designation.
Issue 2 describes the system used in Australia for designating pathotypes of the stripe rust pathogen of wheat, Puccinia striiformis f. sp. tritici (Pst), and provides information on the pathotypes detected over the past 10 years.
Volume 14 Issue 1 – The wheat stem rust pathogen in Australia – pathogenic variation and pathotype designation.
Issue 1 introduces a working definition of a pathotype; outlines the importance of understanding pathotypes of cereal rusts in managing cereal rust diseases; and describes the process for pathotyping.