An Australian research team is on a quest for the perfect turf – grass that grows with minimal water. The 11-member team is two years into a four-year project to breed a grass that meets a list of criteria for “the perfect couch grass” and confident the first commercial product could be available in 2011.
Project sponsor Lynn Davidson, managing director of Jimboomba Turf Group, said the turf would be ideal for mine site rehabilitation, sports fields and other commercial projects.
The $3 million project is funded by Jimboomba Turf Group, a major south-east Queensland supplier; the Council of Mayors, an organisation representing nine south-east Queensland councils; the Australian Research Council; and Queensland Primary Industries and Fisheries.
Team leader is Dr Chris Lambrides, a senior research fellow in molecular plant breeding at the University of Queensland. He planted turf in his suburban Brisbane backyard and was disappointed the couch was not drought resistant. Given his research bent, it was logical for Dr Lambrides to lead the quest.
Researchers began by searching Australia-wide for grass that grows well in arid conditions. They collected almost 1,000 samples of the genus Cynodon from far-flung parts of western Queensland, Western Australia and the Northern Territory, where grasses demonstrated longevity and stress tolerance.
The plants are now being subjected to laboratory and field tests to determine which of the diverse genetics collected need the least water to survive. Mr Davidson says the logic is to identify and commercialise what nature has already achieved.
He said that, apart from growing with minimal water, he had a long list of criteria the ideal turf grass should meet. It must be pest and disease resistant, retain its colour year-round and grow low, with less clipping yield, to reduce mowing costs. Deep root establishment will ensure excellent erosion prevention traits for commercial applications.
Dr Lambrides is aiming for an aesthetically and genetically improved plant – “grass by design”. At UQ’s Gatton Campus, the grasses are grown in 1m-square plots and monitored daily. A range of measurements is taken on stem sections and root profile. Density, colour, leaf size and flowering traits are recorded.
An infrared thermometer is used to check the temperature. The hotter the canopy, the less water the plant is likely to lose, which is a positive.
Another experiment involves growing samples under an automated roof that detects rain and moves to cover the plants, ensuring they receive no rain at all.
Once suitable grasses are identified, samples will be grown at Jimboomba Turf Group’s farms to test and confirm commercial properties.
Mr Davidson says it’s the first time “this depth of real science” has backed turf species’ selection in growers’ attempts to develop an optimum grass for the world’s driest inhabited continent.
The former grazier says the project is not a gamble. “The incredible depth of science being invested means we’ll get a positive result that is likely to become the ideal grass for Australian conditions and export markets,” he said.
“The quality of science employed in developing this product will give landscape architects, project specifiers, mine site rehabilitators and local authorities a huge degree of confidence, knowing the product has the science behind it to fulfill the purpose.”
Mr Davidson says the project stakeholders are “deeply committed to producing a turf grass that will take the industry into a new environmental sphere. Turf grass, ‘the lungs of the earth’, will now do better with less of that precious resource, water. Achieving that goal will propel this uniquely designed product onto the world stage”.
Mr Davidson chairs the turf growers’ peak body, Turf Producers Australia Ltd, which oversees the A$450 million-a-year industry, but he says none of the statutory levy collected from growers by TPAL for industry research is spent on the UQ-based project.
No comments:
Post a Comment