Koorabup was developed by Primary Industries and Regions SA’s research division the South Australian Research and Development Institute (SARDI) with support from the Department of Primary Industries and Regional Development (DPIRD) and funds from AgriFutures Australia’s Export Fodder Program, as part of the National Oat Breeding program.
The variety was initially crossed in 2005 from two WA advanced breeding lines and has been tested in field trials at several locations across the nation, including Cunderdin and Highbury in WA.
SARDI principal plant breeder Pamela Zwer said Koorabup had similar traits to the popular oats variety Carrolup, but with improved resistance to fungal disease, septoria.
Septoria occurs throughout the cereal growing areas of WA and is most severe in high rainfall areas, causing crop losses of up to 50 per cent in susceptible varieties.
“The trait that sets Koorabup apart is that it is moderately resistant to moderately susceptible to septoria, whereas most oats varieties are susceptible to highly susceptible to this disease,” she said.
“This resistance can result in hay yields slightly higher than Carrolup and improved quality performance, providing an alternative cropping option – particularly for growers in the medium to high rainfall zones, where septoria is common.”
Dr Zwer said Koorabup also had characteristics highly desired by the oaten hay trade.
“This variety produces a distinctive blueish-green crop, with thin stems that meets hay processing requirements, although its water soluble carbohydrates averaged slightly lower in WA trials,” she said.
Koorabup is regarded as a mid-tall variety, with early mid to midseason maturity.
In addition to its improved resistance to septoria, it also has good rust and bacterial blight resistances.
DPIRD Research and Industry Innovation Managing Director Mark Sweetingham said the National Oat Breeding program was a great demonstration of the gains that could be made by collaborative and multidisciplinary research.
“This national program draws on the expertise, resources and market intelligence from throughout the milling oat and export fodder supply chains to develop new varieties to boost profitability in this important industry,” Dr Sweetingham said.
“Cereal hay exports from WA have risen strongly in recent years, worth $175 million in 2016-17, driven by strong demand from Asia, notably Japan, South Korea, China and Taiwan.
“The variety launched will help grow this industry in WA, while providing another option for growers to manage their cropping program in line with seasonal expectations and sustainable rotations.”
Sean Blechynden attended the launch on behalf of the AgriFutures Export Fodder Advisory Panel. Mr Blechynden said the new variety has great potential.
“It certainly does have promise in its visual appearance and texture and like all new varieties, it will need to be grown in different areas of the state to see how it performs,” said Mr Blechynden.
“The launch itself was a great success and well put together as it included hay and grain along with a broad range of trials involving fertiliser applications and fungicides at different rates. Well done to everyone involved.”
Koorabup seed has been bulked up in the past two years and will available after harvest via the National Oat Breeding program’s alliance with commercial partner AEXCO.