Cereals are important crops in Australia, and rust diseases continue to impact on Australian cereal production. A widespread epidemic of stripe rust in 2004 was estimated to cost the wheat industry some $90 million through yield losses and chemical control costs. Although fungicides can control rust, genetic resistance remains the most environmentally acceptable and economical means of rust control in Australia. Brennan & Murray (1989; Agric. Sci. 2, 26-35) estimated that wheat rust control in Australia, primarily by breeding...
Cereal rust pathotypes – which are races or strains of the disease that vary in their ability to overcome resistance genes in cereal varieties – are common in most Australian wheat, barley, oat, rye and triticale crops.
Northern region grain growers are being reminded to consider adult plant resistance (APR) to fungal diseases such as stem, stripe and leaf rust, when retaining seed this harvest for next year’s crop.
The Grains Research and Development Corporation has published an Adult Plant Resistance Fact Sheet to assist growers in their variety decision-making and crop management processes.
Rust diseases in wheat are an ongoing issue in most wheat-producing regions around the world. Stripe rust is the most pressing concern due to its regular occurrence in epidemic proportions, while stem rust in East Africa is also a major concern because of its potential to develop as a regional...
Adult plant resistance is a useful trait to consider in variety selection, especially for rust resistance. Understanding how it works can make fungicide application decisions easier.
Cereal rust pathogens have a reputation for change and for selectively seeking out particular host plants to aid survival and spread
Stem, leaf and stripe rusts represent ongoing threats to Australia’s cereal industries, especially to wheat and triticale.
Emerging cereal crops are a focus as the winter cropping cycle moves into full swing. Variety selection and fungicide protection options at sowing have been locked-in for the 2012 season.
Crop protection specialists are encouraging growers to develop a disease management plan for their fungicide use this season to manage both cereal rust and maximum residue limits (MRLs).
Growers are urged to control the ‘green bridge’ now and choose disease resistant crop varieties, after wheat stem rust, barley leaf rust and powdery mildew were found in Western Australia’s southern cropping regions.
Growers deciding which wheat varieties to include in their 2012 cropping program are urged to consider crop performance following rust outbreaks in some regions last year.
Having found a cache of novel rust resistance genes in a 1930s collection of tall bread wheats, Dr Harbans Bariana is now repeating the finding with the colelction's durum wheats
The 2011 winter cereal growing season was another year of mixed experiences for grain growers.
Stem rust inoculum levels in late spring and early summer have southern growers on crop monitoring duty as the damaging pathogen takes hold across the high rainfall grain zone.
The cereal pathogen stripe rust and its damaging cousin stem rust are presenting a real and present danger to grain yields in high rainfall zone (HRZ) cereal crops – despite the late onset of incursions.
Cereal rust pathogens have a reputation for change and some of these changes have had dramatic consequences for variety performance.
Where cereal rust pathogens have been detected in eastern Australia before the end of June, we can mostly expect them to become increasingly prominent as the 2011 season unfolds.
As news of the first cereal rust outbreaks in southern Australia reach the University of Sydney’s Plant Breeding Institute (PBI), northern region growers are reminded to be vigilant in crop monitoring this season.
The GRDC is taking a proactive rather than reactive approach to external and internal drivers of crop protection.
Grain growers throughout the southern cropping region are being warned of the potential for yield losses from cereal rusts following early reports of infections in crops in Victoria, South Australia and southern New South Wales. Reports of stem, leaf and stripe rust in wheat crops have sparked a warning from...
Although it is difficult to predict the effect Ug99 might have on Australian wheat cultivars, its arrival here could render many varieties more susceptible to stem rust.
Grain growers are being urged to start monitoring this year’s emerging crops for rust and prepare a rust-management plan following early detections of severe stem rust in volunteer wheat crops in the southern region.
International initiatives bolster Australian research
Grain growers throughout the southern cropping region are being reminded of the critical need for cereal disease management planning this season. With many crops now sown and the threat of an unprecedented cereal rust risk looming, growers are advised to put in place disease management strategies for the remainder of...
A new campaign launched by the Australian Cereal Rust Control Program (ACRCP) is encouraging growers to be proactive and plan their 2011 rust management strategy now in response to in eastern Australia what is considered the worst disease risk in nearly 40 years.
Variety selection and pre-sowing fungicide decisions have been largely locked in for 2011 and now we look forward to the cereal crop establishment phase.
The threat to world wheat production from stem rust strain Ug99 has begun to spur renewed global investment in agricultural R&D.
With weather ranging from the extremes of flooding and heatwaves over recent months, the question is where, and to what extent, are rust pathogens surviving. The short answer is we don’t precisely know, but we can be confident they will reappear in the 2011 cropping season.
Controlling the green bridge of over-summering volunteer cereals and weeds is now top priority for growers serious about reducing the risk of cereal rust this season.
Take home message Rust control will be based around the following factors: • Variety choice - learning from the good, the bad and the ugly in 2010 • Delaying disease onset – can we manage green bridge uncertainty and the value of early season protection? • Developing a proactive management...
Taking a global and local approach to tracking and responding to disease threats is essential
The unusually mild and wet season in eastern Australia resulted in an increased incidence of all cereal rust diseases in 2010. With the wet weather likely to continue over summer, it will be important to monitor rust pathogens so that the industry is ready to respond to any potential early...
Rust resistance is often an important consideration in deciding which wheat cultivar to grow. The decision can be complicated by the intermediate levels of rust resistance shown by cultivars that fall into the Moderately Resistant (MR) to Moderately Susceptible (MS) categories. A recent initiative to assist growers in cultivar selection...
New evidence supports the long-held belief of plant pathologists that cereal rust diseases can survive the non-cropping summer months.
Wheat stem rust, and in particular the pathotype TTKSK (Ug99), were major areas of focus at the second Borlaug Global Rust Initiative (BGRI) Technical Workshop in St Petersburg, Russia, this year. Emerging from the Horn of Africa at the turn of the millennium, Ug99 poses immediate threats to regional and...
US and Australian researchers are more intimately acquainted with the biology of wheat stripe rust following revelations that could improve scientific understanding of the pathogen